CN213958581U - Silencer with improved structure - Google Patents

Abstract

The present application provides a muffler. The silencer comprises an outer frame body and a silencing full liner. The outer frame body is provided with air holes. The full courage of amortization sets up in the trachea, the full courage of amortization includes first acoustical panel, first courage core and first amortization apron, the figure of first acoustical panel and first amortization apron is two, the plane at two first acoustical panel places is parallel to each other, two first acoustical panels are connected with the outer framework and are formed clearance hole and two openings, the clearance hole communicates with two openings respectively, the extending direction of clearance hole is the same with the extending direction of gas pocket, clearance hole and gas pocket intercommunication, first courage core sets up in the clearance hole, and first courage core is connected with first acoustical panel and outer framework respectively, first courage core includes first inner core and two first oil absorption paper tinsels, two first oil absorption paper tinsels can be dismantled with two first acoustical panel one-to-ones respectively and be connected, first inner core sets up between two first oil absorption paper tinsels. The low-frequency noise reduction effect of the silencer is good and is not easy to be blocked by oil stains.

Description

Silencer with improved structure

Technical Field

The utility model relates to a technical field that makes an uproar falls in the amortization especially relates to a muffler.

Background

In daily life, some comprehensive commercial buildings are often required to be equipped with necessary auxiliary facilities such as large-scale cooling units, air conditioning equipment, smoke exhaust ventilators and the like, and noise generated by the large-scale cooling units, especially low-frequency sound, can not be effectively eliminated, even vibration transmission can be generated to the whole building, and serious disturbance can be generated to residents or users. The noise has great influence on the health of human bodies, the silencer has the functions of silencing and reducing noise, along with the improvement of living standard, the requirements of various occasions on silencing and reducing noise are gradually improved, and the use of the silencer becomes more and more common.

With the increasing requirements of users on silencers, common silencers gradually become difficult to meet the silencing effect of users, especially the low-frequency noise reduction effect, generally, low-frequency sound is more difficult to eliminate than medium-high frequency sound, sound is transmitted farther through a structure due to longer wavelength, the disturbance to people is more durable and more hidden, and the long-term past can generate very adverse effects on the mental state of people; and under outdoor environment and the environment that has the greasy dirt, to ordinary silencer, be difficult to carry out the clearance of greasy dirt, and can produce the condition of jam because of the greasy dirt, and then reduced the noise cancelling effect of silencer for noise cancelling and noise reduction effect can not reach user's demand far away.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the low frequency noise reduction effect among the prior art relatively poor, and the problem of being blockked up by the greasy dirt easily, provide a better and difficult muffler that is blockked up by the greasy dirt of low frequency amortization noise reduction effect.

The purpose of the utility model is realized through the following technical scheme:

a muffler, comprising:

the outer frame body is provided with an air hole;

the silencing full liner is arranged in the air hole and comprises two first silencing plates, two first liner cores and two first silencing cover plates, the number of the first silencing plates and the number of the first silencing cover plates are two, the planes of the two first silencing plates are parallel to each other, the two first silencing plates are connected with the outer frame body to form a clearance hole and two openings, the clearance hole is respectively communicated with the two openings, the extending direction of the clearance hole is the same as the extending direction of the air hole, the clearance hole is communicated with the air hole, the first liner cores are arranged in the clearance hole and respectively connected with the first silencing plates and the outer frame body, each first liner core comprises a first inner core and two first oil absorbing foils, and the two first oil absorbing foils are respectively detachably connected with the two first silencing plates in a one-to-one correspondence manner, the first inner core is arranged between the two first oil absorbing foils, the two first silencing cover plates are correspondingly covered on the opening of the clearance hole one by one, and the two first silencing cover plates are connected with the first silencing plate.

In one embodiment, the first sound-absorbing plate is provided with a plurality of first through holes, each first through hole is communicated with the void-avoiding hole, and each first through hole is communicated with the air hole.

In one embodiment, the first inner core comprises a first silencing filler and a first vibrating foil embedded in the first silencing filler, the first silencing filler is filled in the clearance hole, and the first vibrating foil is arranged opposite to the first silencing plate.

In one embodiment, the first sound attenuation filler is a glass fiber filler or a rock wool filler.

In one embodiment, the muffler further comprises a first connecting body, the first connecting body is arranged in the air hole, the first connecting body is arranged at the joint of the outer frame body and the first sound-absorbing plate, and the first connecting body is detachably connected with the outer frame body and the first sound-absorbing plate respectively.

In one embodiment, the number of the silencing full containers is multiple, and multiple silencing full containers are distributed in the air holes in an array mode.

In one embodiment, the silencer further comprises a silencing half liner, the silencing half liners are arranged in the air holes and connected with the outer frame body, and the silencing full liner and the silencing half liner are arranged correspondingly.

In one embodiment, the half-bladder includes:

the second silencing plate is parallel to the first silencing plate and connected with the outer frame body to form a mounting hole and two mounting ports, the mounting hole is communicated with the two mounting ports respectively, the extending direction of the mounting hole is the same as that of the air hole, and the mounting hole is communicated with the air hole;

the second liner core is arranged in the mounting hole and comprises a second inner core and a second oil absorption foil, the second oil absorption foil is detachably connected with the second sound-absorbing plate and the outer frame body, and the second inner core is respectively connected with the second oil absorption foil and the outer frame body;

two second amortization apron, two the one-to-one lid of second amortization apron is located two settle mouthful department, and two the second amortization apron all with the second acoustical panel with outer frame body connects.

In one embodiment, the muffler further comprises a second connecting body, the second connecting body is arranged in the air hole, the second connecting body is arranged at the joint of the outer frame body and the second sound-absorbing plate, and the second connecting body is detachably connected with the outer frame body and the second sound-absorbing plate respectively.

In one embodiment, the outer frame body is a galvanized steel outer frame body.

In one embodiment, the first noise reduction cover plate is a galvanized steel noise reduction cover plate.

In one embodiment, the first acoustical panel is a galvanized steel acoustical panel.

In one embodiment, the first oil absorbing foil is an aluminum foil.

Compared with the prior art, the utility model discloses the muffler has following advantage at least:

in the silencer of the utility model, the silencing full liner is arranged in the air hole, so that a silencing cavity is formed in the air hole, and the silencer can carry out silencing and noise reduction in a resistance silencing mode; the first silencing plate, the first silencing cover plate and the first liner core of the silencing full liner are used for silencing and reducing noise in a resistive silencing mode, so that a good weakening effect is achieved on low-frequency noise; keep away empty hole and gas pocket intercommunication, then explain to offer the hole of intercommunication on the first acoustical panel, the hole on the first acoustical panel has the effect of amortization for the muffler carries out the amortization through the mode of micro-perforation and falls the noise, has better weakening effect to the low frequency noise, consequently, the muffler has improved the low frequency amortization noise reduction effect of muffler through impedance combined type and micro-perforation's mode. And two first oil absorption paper tinsels can be dismantled with two first acoustical panel one-to-ones respectively and be connected, and first inner core setting is between two first oil absorption paper tinsels, and first oil absorption paper tinsels adsorb the greasy dirt, has avoided producing the problem that the muffler blockked up because of the greasy dirt, has ensured the noise cancelling effect of muffler and has improved the life of muffler to first oil absorption paper tinsel can be dismantled, has improved the maintenance convenience of muffler.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural view of a muffler according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a muffler according to another embodiment of the present invention;

FIG. 3 is a schematic view of a portion of the muffler shell of the muffler of FIG. 1;

FIG. 4 is a cross-sectional view of the muffler shown in FIG. 1;

FIG. 5 is an enlarged view of a portion of the muffler of FIG. 4 at A;

fig. 6 is an enlarged view of a portion of the muffler of fig. 4 at B.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The present application provides a muffler. The silencer comprises an outer frame body and a silencing full liner. The outer frame body is provided with air holes. The silencing full liner is arranged in the air hole and comprises two first silencing plates, two first liner cores and two first silencing cover plates, the planes of the two first silencing plates are parallel to each other, the two first silencing plates are connected with the outer frame body to form a clearance hole and two openings, the clearance hole is respectively communicated with the two openings, the extending direction of the clearance hole is the same as that of the air hole, the clearance hole is communicated with the air hole, the first liner cores are arranged in the clearance hole, and first courage core is connected with first acoustical panel and outer framework respectively, and first courage core includes first inner core and two first oil absorption paper tinsels, and two first oil absorption paper tinsels can dismantle with two first acoustical panels one-to-ones respectively and be connected, and first inner core setting is between two first oil absorption paper tinsels, and two openings part in clearance hole are located to two first amortization apron one-to-ones lid, and just two first amortization apron all are connected with first acoustical panel.

In the silencer, the silencing full liner is arranged in the air hole, so that a silencing cavity is formed in the air hole, and the silencer can perform silencing and noise reduction in a reactive silencing mode; the first silencing plate, the first silencing cover plate and the first liner core of the silencing full liner are used for silencing and reducing noise in a resistive silencing mode, so that a good weakening effect is achieved on low-frequency noise; keep away empty hole and gas pocket intercommunication, then explain to offer the hole of intercommunication on the first acoustical panel, the hole on the first acoustical panel has the effect of amortization for the muffler carries out the amortization through the mode of micro-perforation and falls the noise, has better weakening effect to the low frequency noise, consequently, the muffler has improved the low frequency amortization noise reduction effect of muffler through impedance combined type and micro-perforation's mode. And two first oil absorption paper tinsels can be dismantled with two first acoustical panel one-to-ones respectively and be connected, and first inner core setting is between two first oil absorption paper tinsels, and first oil absorption paper tinsels adsorb the greasy dirt, has avoided producing the problem that the muffler blockked up because of the greasy dirt, has ensured the noise cancelling effect of muffler and has improved the life of muffler to first oil absorption paper tinsel can be dismantled, has improved the maintenance convenience of muffler.

As shown in fig. 1, the muffler 10 of the present application is further explained below for better understanding of the muffler 10 of the present application. Referring to fig. 3, 4 and 5, the silencer 10 of the present application includes an outer frame 100 and a silencing liner 200. The outer frame 100 has an air hole 110. The silencing full liner 200 is arranged in the air holes 110, the silencing full liner 200 comprises two first silencing plates 210, two first liner cores 220 and two first silencing cover plates 230, the number of the first silencing plates 210 and the number of the first silencing cover plates 230 are two, the planes of the two first silencing plates 210 are parallel to each other, the two first silencing plates 210 are connected with the outer frame body 100 and are provided with a clearance hole 240 and two openings 250, the clearance hole 240 is respectively communicated with the two openings 250, the extending direction of the clearance hole 240 is the same as the extending direction of the air holes 110, the clearance hole 240 is communicated with the air holes 110, the first liner cores 220 are arranged in the clearance hole 240, the first liner cores 220 are respectively connected with the first silencing plates 210 and the outer frame body 100, each first liner core 220 comprises a first inner core 221 and two first oil absorbing foils 222, the two first oil absorbing foils 222 are respectively detachably connected with the two first silencing plates 210 in a one-to-one correspondence manner, the first inner core 221 is arranged between the two first oil absorbing foils 222, the two first silencing cover plates 230 are correspondingly covered on the two openings 250 of the clearance hole 240, and the two first silencing cover plates 230 are connected with the first silencing plate 210.

In the above-mentioned silencer 10, the silencing liner 200 is disposed in the air hole 110, so that a silencing cavity is formed in the air hole 110, and the silencer 10 can perform silencing and noise reduction in a reactive silencing manner; the first silencing plate 210, the first silencing cover plate 230 and the first liner core 220 of the silencing full liner 200 can be used for silencing and reducing noise in a resistive silencing mode, so that the silencing full liner has a good effect of weakening low-frequency noise; the clearance holes 240 are communicated with the air holes 110, which means that the first sound-absorbing plate 210 is provided with communicated holes, and the holes on the first sound-absorbing plate 210 have a sound-absorbing function, so that the sound-absorbing and noise-reducing effect is achieved by the silencer 10 through a micro-perforation method, and a good attenuation effect is achieved on low-frequency noise, and therefore, the low-frequency sound-absorbing and noise-reducing effect of the silencer 10 is improved by the silencer 10 through an impedance composite method and a micro-perforation method. And two first oil absorption foils 222 are respectively connected with two first acoustical panels 210 in a one-to-one detachable manner, the first inner core 221 is arranged between the two first oil absorption foils 222, the first oil absorption foils 222 absorb oil stains, the problem that the silencer 10 is blocked due to the oil stains is avoided, the silencing effect of the silencer 10 is ensured, the service life of the silencer 10 is prolonged, and the first oil absorption foils 222 are detachable, so that the maintenance convenience of the silencer 10 is improved.

Referring to fig. 1, 2 and 3, in one embodiment, the first sound-absorbing plate 210 has a plurality of first through holes 211, each of the first through holes 211 is communicated with the clearance hole 240, and each of the first through holes 211 is communicated with the air hole 110. It can be understood that the plurality of first through holes 211 formed in the first sound-absorbing plate 210 are beneficial to noise elimination and reduction, and especially have a better attenuation effect on low-frequency noise, so that the low-frequency noise reduction effect of the muffler 10 is further improved.

Referring to fig. 3, 4 and 5, in one embodiment, the first core 221 includes a first silencing filler 2211 and a first vibration foil 2212 embedded in the first silencing filler 2211, the first silencing filler 2211 is filled in the clearance 240, and the first vibration foil 2212 is disposed opposite to the first silencing plate 210. It can be understood that the first silencing filling body 2211 has a better silencing effect, so that the effect noise reduction effect of the silencer 10 is further improved; embedding the first vibration foil 2212 in the first silencing filler 2211 functions as a resonator, and embedding the first vibration foil 2212 in the first silencing filler 2211 improves the vibration stability of the first vibration foil 2212, and further improves the noise reduction effect of the silencer 10 on low-frequency noise.

In one embodiment, the first silencing filler 221 is a glass fiber filler or a rock wool filler, which further improves the silencing effect of the first silencing filler 221, further improves the silencing effect of the silencer 10 on middle and high frequency noise, and improves the universality of the silencer 10.

Referring to fig. 2, 3 and 4, in one embodiment, the silencer 10 further includes a first connecting body 300, the first connecting body 300 is disposed in the air hole 110, the first connecting body 300 is disposed at a connection position between the outer frame 100 and the first sound-absorbing plate 210, and the first connecting body 300 is detachably connected to the outer frame 100 and the first sound-absorbing plate 210, respectively. It can be understood that the first connecting body 300 is detachably connected to the outer frame 100 and the first sound-absorbing plate 210, so that the silencing inner container 200 can be detached for cleaning, and the silencing inner container 200 is mounted back to the outer frame 100 after cleaning, thereby improving the convenience of maintenance of the silencer 10, i.e. the convenience of later maintenance. The muffler unit 200 of the muffler 10 is fixed to the outer frame 100 by the first connecting member 300, thereby ensuring the stability of the installation of the muffler unit 200. In the present embodiment, the first connection body 300 is a connection flange. Of course, in other embodiments, the first connecting body 300 may be a nut structure, and in this application, the connection relationship, the functional relationship and the position relationship of the first connecting body 300 are mainly protected.

Referring to fig. 1, 2 and 4, in one embodiment, the silencer 10 further includes silencing half-bladders 400, the silencing half-bladders 400 are disposed in the air holes 110, the silencing half-bladders 400 are connected to the outer frame 100, and the silencing full-bladder 200 is disposed corresponding to the silencing half-bladders 400. It can be understood that, the silencing full bladder 200 is disposed in the outer frame 100, and the clearance hole 240 is communicated with the air hole 110, if the silencing full bladder 200 is directly connected to the adjacent three inner walls of the outer frame 100, one of the first silencing plates 210 is directly abutted to the inner wall of the outer frame 100, so that the first silencing plate 210 loses the original silencing and noise reducing effects, and further the first silencing plate 210 of the silencing full bladder 200 becomes a redundant structure, therefore, in order to improve the effect and noise reducing effect of the silencer 10 and avoid the influence on the silencing and noise reducing effect of the silencing full bladder 200 in the silencer 10, a silencing half bladder 400 is disposed in the air hole 110, the silencing half bladder 400 is connected to the adjacent three inner walls of the outer frame 100, the silencing effect of the silencer 10 is improved, and the functional functions of each structure of the silencer 10 are ensured.

Referring to fig. 1 and 2, in one embodiment, the number of the silencing full bladders 200 is multiple, and the multiple silencing full bladders 200 are distributed in the air hole 110 in an array. It can be understood that the size of the air holes 110 in the outer frame 100 needs to be set according to the air passages of the devices or places where the noise reduction is required, the number of the silencing full bladders 200 is also adjusted according to the devices or places where the noise reduction is required, the number of the silencing full bladders 200 indirectly controls the size of the residual space of the air holes 110 of the outer frame 100 after the silencing full bladders 200 and the silencing half bladders 400 are installed, so as to control the silencing and noise reduction effects on the noise of different frequencies, improve the effect noise reduction effect of the silencer 10 on the noise of different frequency intervals, and further improve the universality of the silencer 10.

Referring to fig. 2, 4 and 6, in one embodiment, the muffler half-bladder 400 includes a second muffler plate 410, a second bladder core and two second muffler cover plates 430. The second sound-absorbing plate 410 is parallel to the first sound-absorbing plate 210, the second sound-absorbing plate 410 is connected with the outer frame body 100 to form a mounting hole 440 and two mounting openings 450, the mounting hole 440 is communicated with the two mounting openings 450 respectively, the extending direction of the mounting hole 440 is the same as the extending direction of the air holes 110, and the mounting hole 440 is communicated with the air holes 110. The second courage core sets up in mounting hole 440, and the second courage core includes second inner core 421 and second oil absorption paper tinsel 422, and second oil absorption paper tinsel 422 can be dismantled with second acoustical panel 410 and be connected, and second oil absorption paper tinsel 422 can be dismantled with outer frame body 100 and be connected, and second inner core 421 is connected with second oil absorption paper tinsel 422 and outer frame body 100 respectively. The two second silencing cover plates 430 are correspondingly covered at the two mounting openings 450, and the two second silencing cover plates 430 are connected with the second silencing plate 410 and the outer frame 100.

The half muffling liners 400 are installed in the outer frame 100, and the half muffling liners 400 are disposed in the air holes 110, so that muffling cavities are formed in the air holes 110, and the muffler 10 performs muffling and noise reduction in a reactive muffling manner; the second silencing plate 410, the second silencing cover plate 430 and the second liner core of the silencing half liner 400 are used for silencing and reducing noise in a resistive silencing mode, so that the low-frequency noise is better weakened; the mounting holes 440 are communicated with the air holes 110, which means that the second sound-absorbing plate 410 is provided with communicated holes, and the holes on the second sound-absorbing plate 410 have a sound-absorbing function, so that the sound-absorbing and noise-reducing effect is achieved by the silencer 10 through a micro-perforation method, and a good attenuation effect is achieved on low-frequency noise, and therefore, the low-frequency sound-absorbing and noise-reducing effect of the silencer 10 is improved by the silencer 10 through an impedance composite type and micro-perforation method. And second oil absorption paper tinsel 422 can be dismantled with second acoustical panel 410 and be connected, and second inner core 421 are connected with second oil absorption paper tinsel 422 and outer frame body 100 respectively, and second oil absorption paper tinsel 422 adsorbs the greasy dirt, has avoided producing the problem that muffler 10 blockked up because of the greasy dirt, has ensured the noise cancelling effect of muffler 10 and has improved the life of muffler 10 to second oil absorption paper tinsel 422 can be dismantled, has improved the maintenance convenience of muffler 10.

Referring to fig. 1, 2 and 4 together, it can be understood that the second inner core 421 has the same structure as the first inner core 221, the second inner core 421 includes a second sound-deadening filling body 4211 and a second vibration foil 4212 embedded in the second sound-deadening filling body 4211, the second sound-deadening filling body 4211 is filled in the mounting hole 440, and the second vibration foil 4212 is disposed opposite to the second sound-deadening plate 410. It can be understood that the second silencing filling body 4211 has a better silencing effect, so that the effect noise reduction effect of the silencer 10 is further improved; the second vibration foil 4212 is embedded in the second sound attenuation filling body 4211 to play a role of a resonator, and the second vibration foil 4212 is embedded in the second sound attenuation filling body 4211 to improve the vibration stability of the second vibration foil 4212 and further improve the noise reduction effect of the silencer 10 on low-frequency noise.

Referring to fig. 1 and 2, in one embodiment, the second sound-absorbing plate 410 is provided with a plurality of second through holes 411, each second through hole 110 is communicated with the mounting hole 440, and each second through hole 411 is communicated with the air hole 110. It can be understood that the plurality of second through holes 411 formed in the second sound-absorbing plate 410 are beneficial to noise elimination and reduction, so that the noise elimination effect is further improved; and the second silencing plate 410 is provided with a plurality of second through holes 411 which have a certain buffering effect on the circulating air flow, so that the generation of air turbulence is further reduced.

Referring to fig. 1, 2 and 4, in one embodiment, the silencer 10 further includes a second connecting body disposed in the air hole 110, and the second connecting body 500 is disposed at a connection position between the outer frame 100 and the second sound-absorbing plate 410, and the second connecting body 500 is detachably connected to the outer frame 100 and the second sound-absorbing plate 410, respectively. It can be understood that the second connector 500 is detachably connected to the outer frame 100 and the second sound-absorbing board 410, so that the half-muffling tank 400 can be detached for cleaning, and the half-muffling tank 400 is mounted back to the outer frame 100 after cleaning, thereby improving the convenience of later maintenance of the muffler 10. The half muffler tank 400 of the muffler 10 is fixed to the outer frame 100 by the second connecting member, thereby improving the mounting stability of the half muffler tank 400. In this embodiment, the second connector 500 is a connection flange. Of course, in other embodiments, the second connection body 500 may be a nut structure, and in this application, the connection relationship, the functional relationship and the position relationship of the second connection body 500 are mainly protected.

In one embodiment, the outer frame body 100 is a galvanized steel outer frame body 100, which improves the corrosion resistance and weather resistance of the muffler 10, so that the muffler 10 can be used in an outdoor environment and in an oil-contaminated environment, and the universality of the muffler 10 is improved.

In one embodiment, the first vibration foil 2212 is an aluminum foil, which improves the corrosion resistance and weather resistance of the muffler 10, and avoids the problem that the muffler 10 is blocked due to oil contamination, so that the muffler 10 can be used in outdoor environments and under oil contamination environments, and the universality of the muffler 10 is improved.

In one embodiment, the second vibration foil 4212 is an aluminum foil, which improves the corrosion resistance and weather resistance of the muffler 10, and avoids the problem that the muffler 10 is blocked due to oil contamination, so that the muffler 10 can be used in outdoor environments and under oil contamination environments, and the universality of the muffler 10 is improved.

In one embodiment, the first oil absorbing foil 222 is an aluminum foil, which improves the corrosion resistance and weather resistance of the muffler 10, and avoids the problem that the muffler 10 is blocked due to oil contamination, so that the muffler 10 can be used in outdoor environments and under oil contamination environments, and the universality of the muffler 10 is improved.

In one embodiment, the second oil absorbing foil 422 is an aluminum foil, which improves the corrosion resistance and weather resistance of the muffler 10, and avoids the problem that the muffler 10 is blocked due to oil contamination, so that the muffler 10 can be used in outdoor environments and under environments with oil contamination, and the universality of the muffler 10 is improved.

In one embodiment, the first muffler cover 230 is a galvanized steel muffler cover, which improves the corrosion resistance and weather resistance of the muffler 10, so that the muffler 10 can be used in outdoor environments and under greasy environments, and improves the universality of the muffler 10.

In one embodiment, the first acoustical panel 210 is a galvanized steel acoustical panel that improves the corrosion resistance and weather resistance of the muffler 10, allowing the muffler 10 to be used in outdoor environments as well as in greasy environments, improving the versatility of the muffler 10.

In one embodiment, the second muffler cover 430 is a galvanized steel muffler cover, which improves the corrosion resistance and weather resistance of the muffler 10, so that the muffler 10 can be used in outdoor environments and under greasy environments, and improves the universality of the muffler 10.

In one embodiment, the second acoustical panel 410 is a galvanized steel acoustical panel that improves the corrosion resistance and weather resistance of the muffler 10, allowing the muffler 10 to be used in outdoor environments as well as in greasy environments, improving the versatility of the muffler 10.

Compared with the prior art, the utility model discloses at least, following advantage has:

in the muffler 10 of the present invention, the silencing full bladder 200 is disposed in the air hole 110, so that a silencing cavity is formed in the air hole 110, and the muffler 10 can perform silencing and noise reduction by means of reactive silencing; the first silencing plate 210, the first silencing cover plate 230 and the first liner core 220 of the silencing full liner 200 can be used for silencing and reducing noise in a resistive silencing mode, so that the silencing full liner has a good effect of weakening low-frequency noise; the clearance holes 240 are communicated with the air holes 110, which means that the first sound-absorbing plate 210 is provided with communicated holes, and the holes on the first sound-absorbing plate 210 have a sound-absorbing function, so that the sound-absorbing and noise-reducing effect is achieved by the silencer 10 through a micro-perforation method, and a good attenuation effect is achieved on low-frequency noise, and therefore, the low-frequency sound-absorbing and noise-reducing effect of the silencer 10 is improved by the silencer 10 through an impedance composite method and a micro-perforation method. And two first oil absorption foils 222 are respectively connected with two first acoustical panels 210 in a one-to-one detachable manner, the first inner core 221 is arranged between the two first oil absorption foils 222, the first oil absorption foils 222 absorb oil stains, the problem that the silencer 10 is blocked due to the oil stains is avoided, the silencing effect of the silencer 10 is ensured, the service life of the silencer 10 is prolonged, and the first oil absorption foils 222 are detachable, so that the maintenance convenience of the silencer 10 is improved.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A muffler, comprising:

the outer frame body is provided with an air hole;

the silencing full liner is arranged in the air hole and comprises two first silencing plates, two first liner cores and two first silencing cover plates, the number of the first silencing plates and the number of the first silencing cover plates are two, the planes of the two first silencing plates are parallel to each other, the two first silencing plates are connected with the outer frame body to form a clearance hole and two openings, the clearance hole is respectively communicated with the two openings, the extending direction of the clearance hole is the same as the extending direction of the air hole, the clearance hole is communicated with the air hole, the first liner cores are arranged in the clearance hole and respectively connected with the first silencing plates and the outer frame body, each first liner core comprises a first inner core and two first oil absorbing foils, and the two first oil absorbing foils are respectively detachably connected with the two first silencing plates in a one-to-one correspondence manner, the first inner core is arranged between the two first oil absorbing foils, the two first silencing cover plates are correspondingly covered on the opening of the clearance hole one by one, and the two first silencing cover plates are connected with the first silencing plate.

2. The muffler of claim 1, wherein the first sound-absorbing plate has a plurality of first through holes formed therein, each of the first through holes is communicated with the clearance hole, and each of the first through holes is communicated with the air hole.

3. The muffler of claim 1, wherein the first inner core includes a first sound-deadening filling body and a first vibration foil embedded in the first sound-deadening filling body, the first sound-deadening filling body is filled in the void, and the first vibration foil is disposed opposite to the first sound-deadening plate.

4. The muffler of claim 3, wherein the first sound attenuating filler is a fiberglass filler or a rock wool filler.

5. The muffler of claim 1, further comprising a first connector disposed within the air hole and at a junction of the outer frame and the first sound absorbing panel, the first connectors being detachably connected to the outer frame and the first sound absorbing panel, respectively.

6. The silencer of claim 1, wherein the number of the silencing full bladders is multiple, and the multiple silencing full bladders are distributed in the air holes in an array mode.

7. The silencer of claim 1, further comprising a half silencing bladder, wherein the half silencing bladders are disposed in the air hole, the half silencing bladders are connected to the outer frame, and the full silencing bladder is disposed corresponding to the half silencing bladder.

8. The muffler of claim 7, wherein the muffler half-bladder comprises:

the second silencing plate is parallel to the first silencing plate, a mounting hole and two mounting ports are formed in the second silencing plate and the outer frame body in a connected mode, the mounting hole is communicated with the two mounting ports respectively, the extending direction of the mounting hole is the same as that of the air hole, and the mounting hole is communicated with the air hole;

the second liner core is arranged in the mounting hole and comprises a second inner core and a second oil absorption foil, the second oil absorption foil is detachably connected with the second sound-absorbing plate and the outer frame body, and the second inner core is respectively connected with the second oil absorption foil and the outer frame body;

two second amortization apron, two the one-to-one lid of second amortization apron is located two settle mouthful department, and two the second amortization apron all with the second acoustical panel with outer frame body connects.

9. The muffler of claim 8, further comprising a second connector disposed within the air hole and at a junction of the outer frame and the second muffler plate, the second connector being detachably connected to the outer frame and the second muffler plate, respectively.

10. The silencer of any one of claims 1 to 9, wherein the outer frame is a galvanized steel outer frame;

the first silencing cover plate is a galvanized steel silencing cover plate;

the first silencing plate is a galvanized steel silencing plate;

the first oil absorbing foil is an aluminum foil.

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