CN106285890A

CN106285890A - Acoustic filter

Info

Publication number: CN106285890A
Application number: CN201610766831.9A
Authority: CN
Inventors: 施中云
Original assignee: Henan Zhongsheng Auto Polytron Technologies Inc
Current assignee: Henan Zhongsheng Auto Polytron Technologies Inc
Priority date: 2016-08-31
Filing date: 2016-08-31
Publication date: 2017-01-04

Abstract

The present invention relates to a kind of automotive silencing accessory, particularly relate to a kind of acoustic filter, including housing, inner core and suspension arrangement, described housing includes two equirotal upper shells of independence and lower house, described upper shell and lower house outward flange are provided with flat limit, upper shell and lower house inner surface are provided with elongate recesses, described housing forward end is provided with air vent, side is provided with air inlet, described inner core is positioned at the housing of upper shell and lower house composition, the bracing frame for fixing inner core it is additionally provided with in housing, described bracing frame crown center position is provided with little groove, described suspension arrangement is fixed on the outer peripheral flat limit of housing；Present configuration is simple, low cost, and soundproof effect is good, have employed many structures the most again to block the propagation of sound source, strengthens erasure effect.

Description

Acoustic filter

Technical field

The present invention relates to a kind of automotive silencing accessory, particularly relate to a kind of acoustic filter.

Background technology

Along with the development of science and technology, present a lot of automobiles all can be provided with acoustic filter, acoustic filter can block sound wave Propagate, be typically mounted on the aerodynamic air-flow of source of students and import and export or on gas channel, control system on gas channel, thus Reduce noise, but the most common acoustic wave filter structure is the most fairly simple, often occurs that shell seal the most sternly or is not tied The problems such as reality, reduce the work efficiency of acoustic filter, also do not reach preferable effect, outside a lot of acoustic filters during eliminating the noise The material that hang device uses is solid construction, had both wasted cost, and solid structure is difficult to make moulding.

Summary of the invention

It is an object of the invention to overcome the deficiencies in the prior art, it is to avoid suppressor case bad sealing, structure are insecure Etc. problem, and providing a kind of acoustic filter, present configuration is firm, and low cost, soundproof effect are high.

It is an object of the invention to be achieved by the following measures: a kind of acoustic filter, fill with suspension including housing, inner core Putting, described housing includes two equirotal upper shells of independence and lower house, described upper shell and lower house outward flange Being provided with flat limit, upper shell and lower house inner surface and be provided with elongate recesses, described housing forward end is provided with air vent, Side is provided with air inlet, and described inner core is positioned at the housing of upper shell and lower house composition, be additionally provided with in housing for The bracing frame of fixing inner core, described bracing frame crown center position is provided with little groove, and described suspension arrangement is fixed on shell On the flat limit of outer rim.

Preferably, described upper shell and lower house pass through welded seal.

Preferably, the horizontally-parallel distribution of elongate recesses of described shell inner surface.

Preferably, described air vent is cylindric, is positioned at the flat limit of upper shell and the housing forward end of lower house synthesis Position, and inside exhaust ports is step-like, matches with inner core port.

Preferably, described inner core port is tubulose, and uses spinning structure.

Preferably, described inner core port sleeve is connected to flange, and flange is lamellar and edge is bent downwardly.

Preferably, the air inlet of described housing is cylindric, is positioned at the flat of the housing side that upper shell synthesizes with lower house Platband position.

Preferably, it is filled with thermally resistant fiber glass in described housing.

Preferably, described suspension arrangement is for including suspended tubes and a stay tube, and a stay tube one end is welded in housing outward flange Flat limit on the other end be welded in suspended tubes, one end of suspended tubes is welded on the outer peripheral flat limit of housing, the other end Bend hook in 90 °.

Preferably, described suspension arrangement is four, is welded in the corner on the outer peripheral flat limit of housing, and four suspensions The hook of device is towards unanimously, and in terms of air inlet, the direction of side-by-side mounting device is to external diffusion.

The invention has the beneficial effects as follows: the present invention is combined closely by two equirotal housings of independence, seamless link, And air inlet and gas outlet, the setting of inner core, well control sound source and propagate, and the heat resistant glass filled in housing is fine Dimension has good soundproof effect, and the overall structure of acoustic filter is simple, easy to use, the groove in the shape of shell and housing Setting enhance the hardness of shell, the liquid communication in shell is more smooth and easy, and the hollow pipe used including suspension arrangement saves material, Cost is greatly reduced.

Accompanying drawing explanation

Fig. 1 is the structural representation that acoustic filter is overall.

Fig. 2 is flange arrangement schematic diagram.

Fig. 3 is flange rear end structure schematic diagram.

Fig. 4 is acoustic filter band suspension arrangement structural representation.

Fig. 5 is acoustic filter structural representation in terms of air inlet angle.

In figure: 1-housing, 2-inner core, 3-upper shell, 4-lower house, the flat limit of 5-, 6-boss, 7-air inlet, 8-aerofluxus Mouthful, the little groove of 9-, 10-groove, 11-bracing frame, 12-flange, 13-suspension arrangement, 14-suspended tubes, 15-props up stay tube.

Detailed description of the invention

In order to deepen the understanding of the present invention, below in conjunction with embodiment and accompanying drawing, the invention will be further described.

Embodiment 1: as shown in Figure 1, Figure 2, described in Fig. 3, Fig. 4, Fig. 5, a kind of acoustic filter, including housing 1, inner core 2 and hang dress Putting 13, described housing includes that two equirotal upper shells of independence 3 and lower house 4, two housings are symmetrical housing, on Housing 3 and lower house 4 outward flange are provided with flat limit 5, and inner core 2 is positioned at the housing 1 of upper shell 3 and lower house 4 composition, shell The internal bracing frame 11 being additionally provided with for fixing inner core, inner core port is tubulose；The front end of housing 1 is provided with air vent 8, side End is provided with air inlet 7, and air vent 8 is cylindric, is positioned at the upper shell 3 flat limit 5 with the housing forward end of lower house 4 synthesis It is step-like inside position, and air vent 8, i.e. has boss 6, match with the tubulose of inner core port, the pipe of inner core port Shape uses spinning structure, is placed on boss 6, and agrees with air vent, can preferably be combined seamless with air vent, Gu Fixed close, close tight；Air inlet 7 is also cylindric, is positioned at the flat limit 5 of upper shell 3 and the housing side of lower house 4 synthesis Position；The bracing frame 12 crown center position of enclosure interior is provided with little groove 9, and this little groove can connect enclosure interior Space, facilitate the circulation of liquid, will not block；Upper shell 3 and lower house 4 close weldering by half-shell or cylinder closes and is welded in one Rise, formed hollow cavity, and inner core port be combined with housing the most tight, do not stay any gap, pipeline also clamping, housing Inside is filled with thermally resistant fiber glass, and the closure through housing weakens the propagation of noise, and a series of structures of enclosure are cut Disconnected sound source is propagated；Pipe end is socketed with flange 12, and this flange shape is lamellar, and the edge of periphery is bent downwardly, flange Inwall is that cambered surface is arranged, and cambered surface can ensure that the closure of pipeline, and whole flange is preferably combined with pipeline, saves very Many materials.

The inner surface of housing is provided with the groove 10 of equidistant and parallel distribution, and the horizontally-parallel distribution of this groove, with support The perpendicular angle of little groove 9 on frame 11, groove considerably increases the hardness of whole housing, it is not easy to deformation occur, solid resistance to With, and the more convenient circulation of liquid of enclosure interior groove 10, the circulation by the little groove liquid on bracing frame is further Being combined with the groove of housing, do not have the situation of liquid blocking, the outer peripheral flat limit 5 of housing, neatly there is hardness on this limit, And further increase the conjunction weldering of two independent symmetrical housings, seal tight；Suspension arrangement 13 is fixed on shell by the way of welding On the flat limit 5 of outer rim, and suspension arrangement is by four, is distributed in the corner on the flat limit of housing outward flange, suspension arrangement Be the hollow pipes of two bendings, including suspended tubes 14 and a stay tube 15, stay tube 15 one end bend be welded on upper shell with under On the flat limit of the housing of housing synthesis, the other end is welded in suspended tubes, and one end of suspended tubes 14 is welded on housing outward flange Flat limit on, other end bending hook in 90 °, the hook of the upper end of four described suspension arrangements towards all consistent, Er Qiecong If air inlet direction is seen, the direction of the curved bar of side-by-side mounting device uses hollow pipe not to external diffusion, suspension arrangement Only save material, low cost, and easily manufacture causing of it, increase the hardness of object to a certain extent, and richer Flexible, use more convenient.

The structure of acoustic filter as a whole, the tight property of closing can well control the propagation of sound source, and reduction is made an uproar Sound, and inside stuffing considerably increases erasure effect, glass fibre heatproof is high, does not fires, anti-corruption, heat insulation, sound-proofing good, anti- Tensile strength is high, and electrical insulating property is good, and acoustic filter is typically mounted on the aerodynamic air-flow of source of students and imports and exports or on gas channel, can have Effect ground stops or weakens noise outwards to be propagated, and controls noise, reduces the purpose of noise, enter life when having from recent connector Source waste gas, through noise control container, reducing noise can allow, and changes noise qualities, and from giving vent to anger, connector discharges source of students waste gas.

Claims

1. an acoustic filter, including housing, inner core and suspension arrangement, it is characterised in that: described housing includes that two independences are big Little the same upper shell and lower house, described upper shell and lower house outward flange are provided with flat limit, upper shell and lower casing Internal surface configuration has elongate recesses, described housing forward end to be provided with air vent, and side is provided with air inlet, described inner core It is positioned at the housing of upper shell and lower house composition, in housing, is additionally provided with the bracing frame for fixing inner core, described support Top of the trellis middle part is provided with little groove, and described suspension arrangement is fixed on the outer peripheral flat limit of housing.

A kind of acoustic filter the most according to claim 1, it is characterised in that: described upper shell is close by welding with lower house Envelope.

A kind of acoustic filter the most according to claim 2, it is characterised in that: the elongate recesses of described shell inner surface is horizontal Parallel distribution.

A kind of acoustic filter the most according to claim 1 and 2, it is characterised in that: described air vent is cylindric, is positioned at The flat platband position of the housing forward end of housing and lower house synthesis, and inside exhaust ports is step-like, with inner core port mutually Join.

A kind of acoustic filter the most according to claim 4, it is characterised in that: described inner core port is tubulose, and uses rotation Laminated structure.

A kind of acoustic filter the most according to claim 5, it is characterised in that: described inner core port sleeve is connected to flange, flange It is bent downwardly for lamellar and edge.

A kind of acoustic filter the most according to claim 1 and 2, it is characterised in that: the air inlet of described housing is cylindric, position Flat platband position in upper shell with the housing side of lower house synthesis.

A kind of acoustic filter the most according to claim 1 and 2, it is characterised in that: it is filled with heat resistant glass in described housing Fiber.

A kind of acoustic filter the most according to claim 1, it is characterised in that: described suspension arrangement is for including suspended tubes and propping up Stay tube, a stay tube one end is welded in the other end on the outer peripheral flat limit of housing and is welded in suspended tubes, one end weldering of suspended tubes It is connected on the outer peripheral flat limit of housing, the hook that other end bending is in 90 °.

10. according to a kind of acoustic filter described in claim 1 or 9, it is characterised in that: described suspension arrangement is four, welding In the corner on the outer peripheral flat limit of housing, and the hook of four suspension arrangements is towards unanimously, side-by-side mounting device in terms of air inlet Direction to external diffusion.