CN220365612U - Shutter window - Google Patents

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Publication number
CN220365612U
CN220365612U CN202321892454.5U CN202321892454U CN220365612U CN 220365612 U CN220365612 U CN 220365612U CN 202321892454 U CN202321892454 U CN 202321892454U CN 220365612 U CN220365612 U CN 220365612U
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China
Prior art keywords
plate
amortization
panel
tripe
shutter
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Active
Application number
CN202321892454.5U
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Chinese (zh)
Inventor
张衔
莫涛
杨兵
段学能
郭睿
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CRCC High Tech Equipment Corp Ltd
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CRCC High Tech Equipment Corp Ltd
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Priority to CN202321892454.5U priority Critical patent/CN220365612U/en
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Publication of CN220365612U publication Critical patent/CN220365612U/en
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Abstract

The application discloses shutter relates to shutter technical field, including frame and amortization tripe assembly, wherein, a plurality of amortization tripe assemblies are along the inside of certain direction interval distribution in the frame, and arbitrary amortization tripe assembly includes hole otter board and porous filling layer, and porous filling layer fills in the inside of hole otter board, and arbitrary amortization tripe assembly includes ascending section amortization tripe and descending section amortization tripe, and the length of descending section amortization tripe is greater than the length of ascending section amortization tripe. In the shutter that this application embodiment provided, form the ventilation runner of buckling between arbitrary adjacent two amortization tripe assemblies, can guarantee the ventilation demand of large-traffic like this and reach certain amortization effect, in addition, arbitrary amortization tripe assembly includes hole otter board and locates the porous filling layer in the hole otter board, and the sound wave is when ventilation runner that buckles propagates, absorbs through hole otter board and porous filling layer, can reduce the noise transmission to surrounding environment to reach fine amortization effect.

Description

Shutter window
Technical Field
The application relates to the technical field of shutters, in particular to a shutter.
Background
At present, the power source of the railway engineering machinery is mainly a diesel engine, and along with the rising of the rotating speed and the power of the engine, the noise generated by the engine is also increased; on the other hand, the engine using power increases, and the heat dissipation demand power also increases, so that the engine heat exchanger needs to suck a large amount of cold air to take away the heat and discharge the heat to the surrounding environment. The ventilation of air makes the engine noise diffuse along with it, has very big influence construction operation personnel's operational environment. Particularly, for the railway machine constructed by the operation in the tunnel, noise is enhanced due to reflection of sound by the inner wall of the tunnel, and influence on constructors is enhanced.
In the prior art, railway engineering machinery is provided with a special power room, and an engine is arranged in the power room, but due to the heat dissipation requirement of the engine, an air inlet and an air outlet are formed in the power room, so that convection cold air required by heat dissipation of the engine is ensured, and a louver or a labyrinth type ventilation device is usually arranged at the air inlet and the air outlet. However, the traditional shutter adopts the metal plate blades, is convenient to install, has large flow area, and does not have the silencing function; the labyrinth type ventilation device has a certain silencing function, but has a small flow area and is generally only suitable for an air inlet.
Therefore, in order to reduce noise of the railway engineering vehicle, maintain the noise level in the working state below an acceptable level, optimize the working environment of constructors, and a shutter with a certain silencing effect while ensuring a large-flow ventilation requirement is needed by those skilled in the art.
Disclosure of Invention
The purpose of this application is to provide a shutter, not only can guarantee the ventilation demand of large-traffic, has certain amortization effect moreover to reduce the noise propagation that causes because of the radiating air convection.
In order to achieve the above-mentioned purpose, the application provides a shutter, including frame and amortization tripe assembly, a plurality of amortization tripe assembly along a direction interval distribution in the inside of frame, arbitrary amortization tripe assembly includes hole otter board and locates porous filling layer in the hole otter board, and arbitrary amortization tripe assembly includes ascending section amortization tripe and descending section amortization tripe, ascending section amortization tripe is located descending section amortization tripe is close to one side of air inlet end, descending section amortization tripe's length is greater than ascending section amortization tripe's length.
In some embodiments, any of the sound attenuating blind assemblies further comprises a load bearing structure secured to the frame, the load bearing structure embedded in the porous filler layer and connecting the mesh panels.
In some embodiments, the load bearing structure comprises:
a panel fixed to the frame and connected to the mesh plate;
and the rib plate is connected with the panel and embedded in the porous filling layer.
In some embodiments, the rib plate comprises a first plate body and a second plate body, the second plate body is located between the first plate body and the panel, an included angle between the first plate body and the second plate body is larger than an included angle between the second plate body and a normal direction of the panel, and the two included angles are complementary.
In some embodiments, the descending silencing louver is located between the ascending silencing louver and the panel, and an included angle between the descending silencing louver and the ascending silencing louver is an obtuse angle.
In some embodiments, the orifice plate comprises a first orifice plate, a second orifice plate, a third orifice plate, a fourth orifice plate, and a fifth orifice plate; the first orifice plate and the second orifice plate pass through the circular arc transition, the fourth orifice plate and the fifth orifice plate pass through the circular arc transition, the third orifice plate is circular arc, the first orifice plate with the tangent connection of third orifice plate, the fourth orifice plate with the tangent connection of third orifice plate, the second orifice plate with the fifth orifice plate both with the panel connection.
In some embodiments, a bent ventilation flow channel is formed between any two adjacent silencing louver assemblies, and the distance between the hole net plate and the rib plate is equal to the thickness of the ventilation flow channel.
In some embodiments, the length of the ascending section silencing louver is one-half the length of the descending section silencing louver.
In some embodiments, the mesh plate is a flexible structure, and through holes are formed in the mesh plate.
For above-mentioned background art, shutter that this application embodiment provided, including frame and amortization tripe assembly, wherein, amortization tripe assembly sets up a plurality of, a plurality of amortization tripe assemblies are along the inside of certain direction interval distribution in the frame, arbitrary amortization tripe assembly includes hole otter board and porous filling layer, porous filling layer fills in the inside of hole otter board, and arbitrary amortization tripe assembly includes rising section amortization tripe and falling section amortization tripe, one side that the falling section amortization tripe is close to the air inlet end is located to rising section amortization tripe, the length of falling section amortization tripe is greater than the length of rising section amortization tripe. Compared with a traditional shutter, the shutter provided by the embodiment of the application, because a plurality of amortization tripe assemblies are distributed in the inside of frame along certain direction interval, and any amortization tripe assembly includes the amortization tripe of section that rises and the amortization tripe of section that descends, the one side that the amortization tripe of section that descends is close to the air inlet end is located to the amortization tripe of section that rises, and the length of section that descends amortization tripe is greater than the length of section that rises amortization tripe, consequently, form the ventilation runner of buckling between two arbitrary adjacent amortization tripe assemblies, the ventilation runner includes the amortization runner of section that rises and section runner that descends, it locates to be close to air inlet end one side to rise section runner, the length of section runner that descends is greater than the length of section runner that rises, compared in the amortization tripe assembly of traditional symmetrical structure, the mode that above-mentioned sets up not only can guarantee the ventilation demand of large-traffic, and can reach certain amortization effect through the tripe assembly of section that "control is long", meanwhile, any amortization tripe assembly includes the porous filling layer in the hole otter board and locates downthehole, sound wave is through the ventilation layer that is buckled and when buckling about and the runner is long, through the ventilation layer and the porous layer that is propagated, thereby the noise absorption effect is further reached to the well.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings may be obtained according to the provided drawings without inventive effort to a person skilled in the art.
FIG. 1 is a schematic view of a shutter according to an embodiment of the present disclosure;
FIG. 2 is a schematic cross-sectional view of A-A of FIG. 1;
FIG. 3 is a schematic cross-sectional view of a rim of the frame;
FIG. 4 is a schematic cross-sectional view of a sound deadening louver assembly;
FIG. 5 is an enlarged schematic view of X-X in FIG. 4;
fig. 6 is a schematic diagram of an assembly structure of a panel and a rib plate.
Wherein:
1. silencing shutter assembly; 2. a frame; 3. a ventilation flow passage;
11. a mesh plate; 12. a panel; 13. rib plates; 14. a porous filler layer;
21. a first frame; 22. a second frame; 23. a third frame; 24. a fourth frame;
111. a first orifice plate; 112. a second orifice plate; 113. a third orifice plate; 114. a fourth orifice plate; 115. a fifth orifice plate;
131. a first plate body; 132. a second plate body;
211. a first side plate; 212. a second side plate;
1111. a through hole;
2111. a mounting hole;
j-1, front limit of shutter; j-2, middle limit of shutter; j-3, rear limit of shutter;
l1, the distance between the front limit of the shutter and the middle limit; l2, the middle limit distance of the shutter is from the rear limit distance; l3, the thickness of the silencing shutter assembly; l4, the distance between the hole net plate and the surface of the rib plate; l5, the thickness of the ventilation flow channel; l6, width of the shutter; l7, the length of the shutter; l8, the length of the first side plate; l9, the length of the second side plate; l10, the length of the first plate body; l11, the length of the second plate body; l12, the height of the panel; and L13, the distance between the connection position of the rib plate and the panel and the edge of the panel.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
In order to better understand the aspects of the present application, a further detailed description of the present application will be provided below with reference to the accompanying drawings and detailed description.
The terms "upper end, lower end, left side, right side" and the like are defined based on the drawings of the specification.
Referring to fig. 1 to 6, fig. 1 is a schematic structural diagram of a shutter according to an embodiment of the present application; FIG. 2 is a schematic cross-sectional view of A-A of FIG. 1; FIG. 3 is a schematic cross-sectional view of a rim of the frame; FIG. 4 is a schematic cross-sectional view of a sound deadening louver assembly; FIG. 5 is an enlarged schematic view of X-X in FIG. 4; fig. 6 is a schematic diagram of an assembly structure of a panel and a rib plate.
The shutter provided by the embodiment of the application can be suitable for railway engineering vehicles and comprises a silencing shutter assembly 1 and a frame 2.
The frame 2 is a fixed frame of the silencing shutter assembly, and four sides of the frame 2 are provided with mounting holes 2111, so that the shutter can be mounted on a ventilation opening of a power room or an outer wall of a railway engineering vehicle through bolts; the silencing louver assembly 1 is provided with a plurality of silencing louver assemblies 1, the silencing louver assemblies 1 are distributed in the frame 2 at intervals along a certain direction, any silencing louver assembly 1 comprises a hole net plate 11 and a porous filling layer 14, the porous filling layer 14 is filled in the hole net plate 11, any silencing louver assembly 1 is of a bending structure, any silencing louver assembly 1 comprises an ascending silencing louver and a descending silencing louver, the ascending silencing louver is arranged on one side of the descending silencing louver close to an air inlet end, and the length of the descending silencing louver is larger than that of the ascending silencing louver, so that a bent ventilation runner 3 is formed between any two adjacent silencing louver assemblies 1.
It can be appreciated that, because the plurality of silencing louver assemblies 1 are distributed in the frame 2 at intervals along a certain direction, and any silencing louver assembly 1 comprises an ascending segment silencing louver and a descending segment silencing louver, the ascending segment silencing louver is arranged on one side of the descending segment silencing louver close to the air inlet end, and the length of the descending segment silencing louver is greater than that of the ascending segment silencing louver, therefore, a bent ventilation flow channel 3 is formed between any two adjacent silencing louver assemblies 1, the ventilation flow channel 3 is in an inverted V shape, the ventilation flow channel 3 comprises an ascending segment flow channel and a descending segment flow channel, the ascending segment flow channel is arranged on one side close to the air inlet end, and the length of the descending segment flow channel is greater than that of the ascending segment flow channel. Compared with the traditional silencing shutter assembly with symmetrical structure, the ventilation flow channel with short left and long right can greatly increase the air inlet quantity at one side of the air inlet, so that the ventilation requirement of large flow can be ensured, and meanwhile, a certain silencing effect is achieved through the silencing shutter assembly with short left and long right.
Preferably, a plurality of silencing shutter assemblies are distributed in the frame 2 at equal intervals along the vertical direction, and two ends of each silencing shutter assembly are fixed on the frame 2 through bolts, welding, riveting and the like.
Compared with the traditional shutter, the shutter provided by the embodiment of the application forms the ventilation flow channel 3 of buckling between two arbitrary adjacent amortization tripe assemblies 1, can guarantee the ventilation demand of large-traffic like this and reach certain amortization effect, in addition, arbitrary amortization tripe assembly 1 includes hole otter board 11 and locates porous filling layer 14 (being made by porous filling material) in the hole otter board 11, ventilation flow channel 3 appearance is the type of falling "V", when sound wave is through this type of falling "V" and the ventilation flow channel 3 of controlling short and long, absorb through hole otter board 11 and porous filling layer 14, can further reduce the noise propagation to surrounding environment, thereby reach fine amortization effect.
In some embodiments, the frame 2 includes a first rim 21, a second rim 22, a third rim 23, and a fourth rim 24.
Specifically, the cross section of any one of the rims of the frame 2 is L-shaped, and the L-shaped rim includes a first side plate 211 and a second side plate 212. Wherein, the outlines of the first side plate 211 and the second side plate 212 are both straight lines, the length of the first side plate 211 is L8, and the length of the second side plate 212 is L9; the first side plate 211 and the second side plate 212 have an angle A3, and the preferred angle A3 is equal to 90 °; the length L9 of the second side plate 212 represents the thickness of the blind, and the length L8 of the first side plate 211 represents the mounting surface width of the blind.
Preferably, any side frame of the frame 2 may be formed by splicing two rectangular planar plates, or by bending one rectangular plate.
The first side plates 211 are provided with a plurality of mounting holes 2111, the frames of the frame 2 ensure that all the first side plates 211 are coplanar, and the four frames are connected and fixed end to form a rectangle with a width L6 and a length L7, so as to form the frame 2; the frame 2 is provided with a plurality of mounting holes 2111, and the shutter is mounted on a ventilation opening of the power room or the outer wall of the railway engineering vehicle by adopting a bolt and the like.
Of course, according to actual needs, the length L7 and the width L6 of the shutter can be adjusted according to the installation space of the railway engineering machinery.
The blade length direction of the silencing shutter assembly 1 is parallel to the shutter width L6 direction.
In some embodiments, the sound deadening blind assembly 1 further includes a load bearing structure secured to the frame 2, the load bearing structure embedded in the porous packing layer 14 and connecting the cell screen 11.
Preferably, the load-bearing structure comprises a panel 12 and a rib plate 13, wherein the panel 12 is fixed on the frame 2, the panel 12 is connected with the pore net plate 11, the rib plate 13 is connected with the panel 12, and the rib plate 13 is embedded in the porous filling layer 14 inside the pore net plate 11.
On the one hand, the rib plate 13 can play a silencing role: when sound waves pass through the bent ventilation flow channel 3, the sound waves are reflected by the rib plates 13 on the basis of being absorbed by the porous mesh plate 11 and the porous filling material, so that the purpose of reducing the transmission of sound energy to the outside is achieved; on the other hand, the rib plates 13 are embedded in the porous filling layer 14, the rib plates 13 are connected with the panel 12, the porous screen plate 11 is connected with the panel 12, and the panel 12 is fixed on the frame 2, so that the porous screen plate 11 and the porous filling layer 14 can be supported through the panel 12 and the rib plates 13, and the stability of the silencing shutter assembly 1 is ensured.
In some embodiments, the panel 12 is a rectangular planar plate structure, the rib plates 13 are of a plate structure with a V-shaped section, and the hole net plate 11 is of a flexible plate structure with a plurality of circular through holes 1111 distributed on the surface.
Specifically, the rib plate 13 includes a first plate body 131 and a second plate body 132, the second plate body 132 is located between the first plate body 131 and the panel 12, an included angle between the first plate body 131 and the second plate body 132 is A1, the angle A1 is an obtuse angle, the length of the first plate body 131 is L10, the length L11 of the second plate body 132 is greater than L10.
Preferably, the rib 13 may be formed by splicing two rectangular planar plates or bending one rectangular plate.
The panel 12 is a rectangular planar plate structure, the height is L12, and the length is equal to the leaf length of the silencing shutter assembly 1.
The rib plate 13 is fixedly connected with the panel 12 along the edge of the shutter in the length direction, so that a support structure with a J-shaped cross section is formed, and the support structure is a bearing structure of the shutter. Specifically, the connection fixing position of the edge of the rib plate 13 and the panel 12 is parallel to the panel 12 along the leaf length direction, and the distance between the connection position of the rib plate 13 and the panel 12 and the edge of the panel 12 is L13, l13=l12/2; when the rib plate 13 is spliced with the panel 12, the normal included angle between the second plate body 132 of the rib plate 13 and the panel 12 is A2, and the angle A2 is an acute angle.
Preferably, the angle between the first plate 131 and the second plate 132 is greater than the angle between the second plate 132 and the normal to the panel 12, and the two angles are complementary, i.e., angle a1+a2=180°.
It should be noted that the mesh plate 11 wraps the rib plate 13 inside by bending, and the mesh plate 11 is fixed on the panel 12 along the edge of the shutter assembly leaf length. The mesh plate 11 can be fixedly connected to the upper and lower surfaces of the rib plate 13 by bolts, riveting and the like, and a certain thickness of space is kept between the upper and lower surfaces of the rib plate 13 and the mesh plate 11 for filling the porous filling layer 14. When sound waves pass through the inverted V-shaped flow channel, the sound waves are absorbed and reflected by the porous filling layer 14 and the rib plates 13, so that the purpose of reducing the transmission of sound energy to the outside is achieved.
In some embodiments, any one of the silencing louver assemblies 1 is in an inverted V shape, and the silencing louver assembly 1 includes an ascending silencing louver and a descending silencing louver, where the descending silencing louver is located between the ascending silencing louver and the panel 12, and preferably, the length of the ascending silencing louver is one half of the length of the descending silencing louver, and an included angle between the descending silencing louver and the ascending silencing louver is an obtuse angle, so that the silencing effect can be further improved.
More specifically, the shape of the orifice plate 11 includes a first orifice plate 111, a second orifice plate 112, a third orifice plate 113, a fourth orifice plate 114, and a fifth orifice plate 115; the first orifice plate 111 and the second orifice plate 112 are in arc transition, the fourth orifice plate 114 and the fifth orifice plate 115 are in arc transition, preferably, the contour of the first orifice plate 111, the contour of the second orifice plate 112, the contour of the fourth orifice plate 114 and the contour of the fifth orifice plate 115 are all straight lines, the contour of the third orifice plate 113 is in arc, the first orifice plate 111 is tangentially connected with the third orifice plate 113, the fourth orifice plate 114 is tangentially connected with the third orifice plate 113, and the second orifice plate 112 and the fifth orifice plate 115 are both connected with the panel 12.
In the embodiment, the surface distance between the hole net plate 11 and the rib plate 13 is L4; the thickness of the silencing shutter assembly is L3, and l4=l3/2.
It can be understood that in the cross section of the silencing shutter assembly, the shutter assembly is in an inverted V shape in appearance, the shape limit of the air inlet end of the shutter is the front limit J-1 of the shutter, the shape limit of the air outlet end of the shutter is the rear limit J-3 of the shutter, and the limit of the highest position of the rising point of the shape of the middle part of the shutter is the middle limit J-2 of the shutter; wherein the rear louver limit J-3 is parallel to the plane of the panel 12; the front limit J-1, the middle limit J-2 and the rear limit J-3 are parallel to each other; the distance between the front limit J-1 of the louver and the middle limit J-2 of the louver is L1, and the projection length of the ascending shape of the cross section of the silencing louver assembly along the thickness direction of the silencing louver is represented; the distance L2 between the middle limit J-2 of the louver and the rear limit J-3 of the louver represents the projection length of the cross section descending shape of the silencing louver assembly along the thickness direction of the silencing louver; the length of the cross-sectional rising shape of the soundproofing shutter assembly is l1=l2/2.
At the same time, the silencing louver assembly 1 has a thickness l9=l1+l2.
In addition, the soundproofing louver assemblies are distributed at equal intervals along the louver length L7 direction, and a certain distance is kept between adjacent louvers, the distance space forms a ventilation flow channel 3, the thickness of the ventilation flow channel 3 is L5, and preferably, l5=l4. The thickness of the ventilation flow channel 3, that is, the width of the ventilation flow channel 3 or the dimension of the ventilation flow channel 3 in the vertical direction (it is understood that the thickness of the ventilation flow channel 3 in all directions is the same)
In some embodiments, the shutter is a unidirectional ventilation shutter, specifically, the ventilation flow channel 3 includes an ascending flow channel and a descending flow channel, the ascending flow channel is disposed near the air inlet end, the length of the descending flow channel is greater than that of the ascending flow channel, and an included angle between the descending flow channel and the ascending flow channel is an obtuse angle. The ascending section flow channel is positioned between the front limit J-1 of the shutter and the middle limit J-2 of the shutter; the downcomer is located between the middle boundary J-2 of the louver and the rear boundary J-3 of the louver.
When the soundproofing shutter assembly is fixedly connected with the frame 2, the blade length direction of the soundproofing shutter assembly is parallel to the shutter width L6 direction, and the panel 12 of the soundproofing shutter assembly is coplanar with all the first side plates 211.
In this embodiment, one end of the third orifice plate 113 of the orifice plate 11 is the air inlet side of the shutter, and one end of the panel 12 is the air outlet side of the shutter.
It should be noted that in this specification relational terms such as first and second are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The shutter provided by the present application is described in detail above. Specific examples are employed herein to illustrate the principles and embodiments of the present application, and the above examples are provided only to assist in understanding the aspects of the present application and their core ideas. It should be noted that it would be obvious to those skilled in the art that various improvements and modifications can be made to the present application without departing from the principles of the present application, and such improvements and modifications fall within the scope of the claims of the present application.

Claims (9)

1. The utility model provides a shutter, its characterized in that includes frame and amortization tripe assembly, a plurality of amortization tripe assembly along a direction interval distribution in the inside of frame, arbitrary amortization tripe assembly includes hole otter board and locates porous filling layer in the hole otter board, and arbitrary amortization tripe assembly includes rising section amortization tripe and descending section amortization tripe, rising section amortization tripe is located one side that descending section amortization tripe is close to the air inlet, the length of descending section amortization tripe is greater than the length of rising section amortization tripe.
2. The blind of claim 1 wherein any of said sound attenuating blind assemblies further comprises a load bearing structure secured to said frame, said load bearing structure being embedded in said porous filler layer and connected to said mesh panel.
3. The blind of claim 2 wherein said load bearing structure comprises:
a panel fixed to the frame and connected to the mesh plate;
and the rib plate is connected with the panel and embedded in the porous filling layer.
4. A blind according to claim 3, wherein the web comprises a first plate and a second plate, the second plate being positioned between the first plate and the panel, the first plate and the second plate having an angle greater than the angle normal to the panel and complementary to the second plate.
5. A blind according to claim 3, wherein said descending sound deadening louver is located between said ascending sound deadening louver and said panel, and wherein the angle between said descending sound deadening louver and said ascending sound deadening louver is an obtuse angle.
6. The shutter of claim 3, wherein the aperture panel comprises a first aperture panel, a second aperture panel, a third aperture panel, a fourth aperture panel, and a fifth aperture panel; the first orifice plate and the second orifice plate pass through the circular arc transition, the fourth orifice plate and the fifth orifice plate pass through the circular arc transition, the third orifice plate is circular arc, the first orifice plate with the tangent connection of third orifice plate, the fourth orifice plate with the tangent connection of third orifice plate, the second orifice plate with the fifth orifice plate both with the panel connection.
7. A shutter as claimed in any one of claims 3 to 6, wherein a curved ventilation channel is formed between any adjacent two of said silencing shutter assemblies, said aperture web being spaced from said web by a distance equal to the thickness of said ventilation channel.
8. The blind of any of claims 1-6 wherein said ascending noise abatement louvers have a length that is one-half the length of said descending noise abatement louvers.
9. The blind of claim 1 wherein said mesh panel is of flexible construction, said mesh panel having through holes.
CN202321892454.5U 2023-07-18 2023-07-18 Shutter window Active CN220365612U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321892454.5U CN220365612U (en) 2023-07-18 2023-07-18 Shutter window

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321892454.5U CN220365612U (en) 2023-07-18 2023-07-18 Shutter window

Publications (1)

Publication Number Publication Date
CN220365612U true CN220365612U (en) 2024-01-19

Family

ID=89515969

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202321892454.5U Active CN220365612U (en) 2023-07-18 2023-07-18 Shutter window

Country Status (1)

Country Link
CN (1) CN220365612U (en)

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