CN114992418A - Silencer assembly for pipeline, pipeline silencing device and refrigerator - Google Patents
Silencer assembly for pipeline, pipeline silencing device and refrigerator Download PDFInfo
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- CN114992418A CN114992418A CN202210819906.0A CN202210819906A CN114992418A CN 114992418 A CN114992418 A CN 114992418A CN 202210819906 A CN202210819906 A CN 202210819906A CN 114992418 A CN114992418 A CN 114992418A
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- 230000003584 silencer Effects 0.000 title claims abstract description 69
- 230000030279 gene silencing Effects 0.000 title claims abstract description 53
- 238000003780 insertion Methods 0.000 claims abstract description 75
- 230000037431 insertion Effects 0.000 claims abstract description 75
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 11
- 230000000712 assembly Effects 0.000 claims description 18
- 238000000429 assembly Methods 0.000 claims description 18
- 230000002093 peripheral effect Effects 0.000 claims description 16
- 238000010521 absorption reaction Methods 0.000 description 40
- 230000000694 effects Effects 0.000 description 17
- 230000009467 reduction Effects 0.000 description 13
- 238000013461 design Methods 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 7
- 238000009413 insulation Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000001743 silencing effect Effects 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2201/00—Insulation
- F25D2201/30—Insulation with respect to sound
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention discloses a silencer component for a pipeline, a pipeline silencing device and a refrigerator, wherein the silencer component for the pipeline comprises: the first sounding device comprises a first shell and a first cannula communicated with the inside of the first shell; the second resonator comprises a second shell and a second insertion pipe communicated with the second shell; the first cannula and the second cannula are respectively communicated with the inner cavity of the tube body, the first cannula is positioned at the upstream of the second cannula, and the inner diameter of the first cannula is smaller than that of the second cannula. According to the silencer component for the pipeline, the first insertion pipe and the second insertion pipe are directly communicated with the inner cavity of the pipe body, so that the overall structural size of the silencer component is conveniently reduced, and the silencing performance of the silencer component is favorably and remarkably improved.
Description
Technical Field
The invention relates to the technical field of silencers, in particular to a silencer assembly for a pipeline, a pipeline silencing device and a refrigerator.
Background
Refrigeration equipment such as a refrigerator and the like can generate mechanical noise, electromagnetic noise, flow noise and the like under the operation working condition. For example, noise may become abnormally significant due to dust, creep, and the like when the fan is operated for a long time. In addition, the fluid flowing over the surfaces of the radiator and compressor can cause noise with certain intensity, which further increases the fluid noise, and the compressor can generate more significant noise during operation. However, the existing silencer has a large structural size, is not suitable for household appliances such as refrigerators, has a poor noise reduction effect, and has an improved space.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a silencer assembly for a pipeline, which can achieve a compact design of the silencer assembly and can significantly improve the silencing performance of the silencer assembly.
A muffler assembly for a pipe according to an embodiment of the present invention includes: the first sounding device comprises a first shell and a first cannula communicated with the inside of the first shell; the second resonator comprises a second shell and a second cannula communicated with the inside of the second shell; the first cannula and the second cannula are respectively communicated with the inner cavity of the tube body, the first cannula is positioned at the upstream of the second cannula, and the inner diameter of the first cannula is smaller than that of the second cannula.
According to the silencer component for the pipeline, the first insertion pipe and the second insertion pipe are directly communicated with the inner cavity of the pipe body, so that the overall structural size of the silencer component is reduced conveniently, the silencer component is beneficial to achieving miniaturization design, the first insertion pipe is located at the upstream of the second insertion pipe, the inner diameter of the first insertion pipe is smaller than that of the second insertion pipe, the first resonator plays a role in resonance sound absorption, the second resonator plays a role in local impedance sound insulation, and the silencer component is beneficial to being capable of remarkably improving the silencing performance.
According to some embodiments of the invention, the first housing has an inner volume that is less than an inner volume of the second housing.
According to the silencer assembly for a pipe of some embodiments of the present invention, the first resonator and the second resonator are each configured as an inner-tube helmholtz resonator, and a resonance frequency of the first resonator and a resonance frequency of the second resonator are the same.
According to the silencer assembly for pipelines, in some embodiments of the invention, the extending direction of the lumen of the first cannula and the extending direction of the lumen of the second cannula are perpendicular to the extending direction of the inner cavity of the pipe body.
According to the silencer assembly for pipelines in some embodiments of the invention, the outer peripheral wall of the pipe body is provided with two mounting openings, and the first insertion pipe and the second insertion pipe are respectively opposite to or inserted into the two mounting openings.
According to some embodiments of the present invention, the first cannula is positioned within the first housing and spaced apart from an inner peripheral wall of the first housing to define a first sound-deadening chamber, and the second cannula is positioned within the second housing and spaced apart from an inner peripheral wall of the second housing to define a second sound-deadening chamber.
According to the silencer component for pipelines in some embodiments of the invention, the end face of the first insertion pipe is spaced from the inner wall of the first shell and is formed with a first outlet communicated with the first silencing cavity; or the peripheral wall of the first insertion tube is provided with a first silencing hole which is communicated with the first silencing cavity.
According to the silencer component for pipelines, the end face of the second insertion pipe is spaced from the inner wall of the second shell and is formed with a second outlet communicated with the second silencing cavity; or the peripheral wall of the second insertion tube is provided with a second silencing hole which is communicated with the second silencing cavity.
According to some embodiments of the present invention, the first cannula is centrally disposed within the first housing and the second cannula is centrally disposed within the second housing.
The invention also provides a pipeline silencing device.
According to the embodiment of the invention, the pipeline silencer device comprises a pipe body and the silencer component for the pipeline in any one of the embodiments.
According to the pipeline silencing device provided by the embodiment of the invention, the silencer assemblies are in multiple groups, and the multiple groups of silencer assemblies are distributed at intervals along the length direction and/or the circumferential direction of the pipe body.
The invention also provides the refrigerator.
The refrigerator provided by the embodiment of the invention comprises the pipeline silencing device in any one of the embodiments.
Compared with the prior art, the refrigerator, the pipeline silencing device and the silencer component for the pipeline have the same advantages, and the detailed description is omitted.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural view of a pipe silencer assembly (a set of silencer assemblies) according to some embodiments of the present invention;
FIG. 2 is an isometric view of a pipe silencer assembly (a set of silencer components) according to some embodiments of the present invention;
FIG. 3 is a front view of a pipe silencer assembly (a set of silencer assemblies) according to some embodiments of the present invention;
FIG. 4 is a side view of a pipe silencer assembly (a set of silencer assemblies) according to some embodiments of the present invention;
FIG. 5 is a top view of a pipe silencer assembly (a set of silencer assemblies) according to some embodiments of the present invention;
FIG. 6 is a schematic view of the tubular body of FIG. 1;
FIG. 7 is a schematic structural view of a pipe silencer assembly (multiple silencer assemblies) according to some embodiments of the present invention;
FIG. 8 is a front view of a pipe silencer assembly (multiple silencer assemblies) according to some embodiments of the present invention;
FIG. 9 is a graph of sound absorption coefficient for a pipe silencer assembly (a set of silencer assemblies) according to some embodiments of the present invention;
FIG. 10 is a graph of sound absorption coefficient (multi-group muffler assembly) for a pipe muffler assembly according to some embodiments of the present invention.
Reference numerals:
the pipe silencing device 100 is provided with a pipe silencing device,
a muffler assembly 10 for a pipe is provided,
a first resonator 11, a first housing 111, a first cannula 112, a first muffling chamber 113, a first exit 114,
a second resonator 12, a second housing 121, a second cannula 122, a second muffling chamber 123, a second outlet 124,
a pipe body 20 and an installation opening 21.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.
A muffler assembly 10 according to an embodiment of the present invention is described below with reference to fig. 1-10.
A muffler assembly 10 according to an embodiment of the present invention includes: a first resonator 11 and a second resonator 12.
It should be noted that both the first resonator 11 and the second resonator 12 may be configured as inner-tube helmholtz resonators, and the resonance frequency of the first resonator 11 is the same as the resonance frequency of the second resonator 12, and the resonance frequency may be obtained by an impedance formula, and the frequency corresponding to the impedance being equal to zero is the resonance frequency.
The first resonator 11 and the second resonator 12 are both mounted on the pipe body 20, a wind guide cavity extending in the axial direction of the pipe body 20 is formed in the pipe body 20, and the first resonator 11 and the second resonator 12 are distributed on the pipe body 20 at intervals along the wind guide direction of the wind guide cavity, wherein, as shown in fig. 1 and 3, the direction of an arrow in the pipe body 20 is the wind guide direction.
Therefore, wind, noise and the like can enter the wind guide cavity and are transmitted along the wind guide direction, the flow of the wind cannot be influenced in the transmission process, and the first resonator 11 and the second resonator 12 can sequentially reduce the noise.
Preferably, the pipe body 20 is configured to have a square cross section, that is, the pipe body 20 is configured as a square pipe, and both the first and second resonators 11 and 12 are also configured as a square structure, and the first and second resonators 11 and 12 are disposed on the same side of the pipe body 20, thereby facilitating reduction of difficulty in connection of the first and second resonators 11 and 12 to the pipe body 20.
Of course, the tube 20 may be configured to have other cross-sectional shapes, and is not limited thereto.
Further, as shown in fig. 1, the first resonator 11 is located at one end (e.g., the left end in fig. 1) of the pipe 20 close to the inlet air, and the second resonator 12 is located at one end (e.g., the right end in fig. 1) of the pipe 20 close to the outlet air, in other words, the first resonator 11 and the second resonator 12 are sequentially distributed in the air guiding direction, that is, the first resonator 11 is located upstream (e.g., the left end in fig. 1) of the second resonator 12, so that the first resonator 11 and the second resonator 12 sequentially play a role in silencing or blocking sound in the air guiding direction, and the silencing performance of the silencer assembly 10 can be significantly improved by the combination of the first resonator 11 and the second resonator 12.
Specifically, as shown in fig. 2, the first resonator 11 includes a first casing 111 and a first insertion tube 112 communicating with the first casing 111, and the second resonator 12 includes a second casing 121 and a second insertion tube 122 communicating with the second casing 121, wherein the first insertion tube 112 and the second insertion tube 122 are respectively communicated with the inner cavity of the tube body 20, the first insertion tube 112 is located upstream of the second insertion tube 122, and the inner diameter of the first insertion tube 112 is smaller than the inner diameter of the second insertion tube 122.
It can be understood that a first sound-deadening chamber 113 is formed in the first housing 111, the first cannula 112 is located in the first sound-deadening chamber 113, and at least a part of the first cannula 112 is inserted in the air-guiding chamber, so that the first sound-deadening chamber 113 is communicated with the air-guiding chamber through the first cannula 112.
A second silencing cavity 123 is formed in the second casing 121, the second cannula 122 is located in the second silencing cavity 123, and at least a portion of the second cannula 122 is inserted into the air guide cavity, so that the second silencing cavity 123 is communicated with the air guide cavity through the second cannula 122.
Further, the inner diameter of the first cannula 112 is smaller than the inner diameter of the second cannula 122 and is located upstream of the second cannula 122. In other words, the first resonator 11 is located upstream of the second resonator 12.
Therefore, by adjusting the relationship between the inner diameter of the first insertion tube 112 and the inner diameter of the second insertion tube 122 and the relative position relationship between the first insertion tube 112 and the second insertion tube 122, when noise propagates in the air guide cavity along the air guide direction, the noise can enter the first muffling cavity 113 along the first insertion tube 112 due to the fact that the first resonator 11 has the first insertion tube 112 with a smaller inner diameter, and in the entering process of the noise, the resistance of the first insertion tube 112 to the noise is larger due to the smaller inner diameter of the first insertion tube 112, so that the energy of the noise is consumed, a certain noise reduction effect is achieved, then the noise enters the first muffling cavity 113 and is reflected between the inner walls of the first muffling cavity 113, so that the energy of the noise is consumed, and the effects of sound absorption and noise reduction are achieved.
Then, the noise propagates in the wind guiding direction, and then the radial dimension of the pipe body 20 at the connecting position with the second insertion pipe 122 is larger than the radial dimension of other positions of the pipe body 20 due to the larger inner diameter of the second insertion pipe 122 of the second resonator 12, so that the local continuity of the pipe body 20 is broken, and a local acoustic impedance abrupt change is formed at the connecting position of the second insertion pipe 122 and the pipe body 20, so that a structure similar to a "sound wall" is formed to block the noise sound from propagating downstream.
Therefore, the first resonator 11 can play a role in resonance sound absorption, and the second resonator 12 can play a role in local impedance sound insulation, so that compared with a silencing structure in the prior art, in which a single resonator or a plurality of resonators have the same size, the silencer assembly 10 in the invention can have remarkable silencing performance, and obtains a sound absorption effect with a sound absorption frequency band sound absorption coefficient of more than 0.9.
According to the muffler assembly 10 for a pipeline of the embodiment of the present invention, the first insertion tube 112 and the second insertion tube 122 are both directly communicated with the inner cavity of the pipe 20, so as to reduce the overall structural size of the muffler assembly 10, and facilitate the realization of a miniaturized design of the muffler assembly 10, and the first insertion tube 112 is located upstream of the second insertion tube 122 and the inner diameter of the first insertion tube 112 is smaller than the inner diameter of the second insertion tube 122, so that the first resonator 11 plays a role in resonance sound absorption, and the second resonator 12 plays a role in local impedance sound insulation, which is beneficial to significantly improving the sound absorption performance of the muffler assembly 10.
In some embodiments, as shown in fig. 2-5, the internal cavity volume of the first housing 111 is less than the internal cavity volume of the second housing 121.
The resonance frequency of the first resonator 11 is equal to the resonance frequency of the second resonator 12, and the inner diameter of the first tube 112 is small, so that the volume of the inner cavity of the first housing 111 is small, and the inner diameter of the second tube 122 is large, so that the volume of the inner cavity of the second housing 121 is large, so that the resonance frequency of the first resonator 11 is equal to the resonance frequency of the second resonator 12.
Meanwhile, the volume of the inner cavity of the first shell 111 is small, which is beneficial to multiple reflections of sound in the first shell 111, thereby being beneficial to consuming the energy of noise and better playing a role of noise reduction.
Further, the first resonator 11 and the second resonator 12 are both configured as inner-tube helmholtz resonators, and the resonance frequency of the first resonator 11 is the same as that of the second resonator 12, so as to ensure that the first resonator 11 and the second resonator 12 can have optimal silencing effects, which is beneficial to significantly improving the silencing performance of the silencer assembly 10.
In some embodiments, as shown in fig. 2 and 3, the direction of extension of the lumen of the first cannula 112 and the direction of extension of the lumen of the second cannula 122 are both perpendicular to the direction of extension of the lumen of the body 20.
Preferably, the first insertion tube 112 and the second insertion tube 122 are both configured as circular tubes, and the axial direction of the first insertion tube 112 and the axial direction of the second insertion tube 122 are both perpendicular to the air guiding direction of the air guiding cavity, in other words, the first insertion tube 112 and the second insertion tube 122 are both connected to the outer circumferential wall of the tube body 20, so as to arrange the positions of the first insertion tube 112 and the second insertion tube 122 reasonably, make the layout more reasonable, and make the first resonator 11 and the second resonator 12 play a noise reduction effect in the direction perpendicular to the propagation direction of the noise.
In some embodiments, as shown in fig. 6, the outer peripheral wall of the tubular body 20 is provided with two mounting openings 21, and as shown in fig. 2 and 5, the first insertion tube 112 and the second insertion tube 122 are respectively aligned with or inserted into the two mounting openings 21.
Two installing ports 21 are spaced apart along the length direction of body 20 and are distributed, and first intubate 112 and second intubate 122 are pegged graft with two installing ports 21 respectively, so that the lower extreme of first intubate 112 and the lower extreme of second intubate 122 are inserted respectively in body 20, make the interpolation design of first intubate 112 and second intubate 122 can show the resonator structure size that reduces correspondingly under the same sound absorption frequency, more be favorable to saving installation space, improve space utilization, do benefit to the miniaturized design that realizes muffler subassembly 10. Meanwhile, the deep subwavelength size noise reduction is favorably realized.
In some embodiments, as shown in fig. 2 and 3, the first cannula 112 is positioned within the first housing 111 and spaced apart from an inner peripheral wall of the first housing 111 to define a first sound-deadening chamber 113, and the second cannula 122 is positioned within the second housing 121 and spaced apart from an inner peripheral wall of the second housing 121 to define a second sound-deadening chamber 123.
Thereby, the first cannula 112 and the second cannula 122 are not directly visible on the outside, and noise enters the first sound-deadening chamber 113 through the first cannula 112 to be reflected multiple times in the first sound-deadening chamber 113 to consume energy of the noise, achieving the effect of noise reduction.
Further, as shown in fig. 3, the end surface of the first cannula 112 is spaced apart from the inner wall of the first housing 111 and is formed with a first outlet 114 communicating with the first muffling chamber 113.
It can be understood that, as shown in fig. 2, the upper end of the first insertion tube 112 and the lower end of the first insertion tube 112 are both open, so that the air guide cavity and the first silencing cavity 113 are conveniently communicated through the first insertion tube 112, and then noise is favorably introduced into the first silencing cavity and is reflected for multiple times, so that the energy of the noise is consumed, and the noise reduction effect is realized.
Alternatively, in other embodiments, the peripheral wall of the first cannula 112 is provided with a first sound-deadening hole, which communicates with the first sound-deadening chamber 113.
In other words, the first silencing hole is provided on the peripheral wall of the part of the first insertion tube 112 located in the first silencing cavity 113, so that the noise in the air guide cavity can enter the first silencing cavity 113 through the first silencing hole.
In some embodiments, the end face of the second cannula 122 is spaced from the inner wall of the second housing 121 and is formed with a second outlet 124 communicating with the second sound-deadening chamber 123.
It can be understood that, as shown in fig. 2, the upper end of the second insertion tube 122 and the lower end of the second insertion tube 122 are both open, so that the second sound-deadening chamber 123 is communicated with the wind-guiding chamber, so as to form a local impedance to achieve a sound-deadening effect.
Alternatively, in other embodiments, the peripheral wall of the second cannula 122 is provided with a second silencing hole, and the second silencing hole is communicated with the second silencing cavity 123, so that the second silencing cavity 123 is communicated with the air guide cavity through the second silencing hole.
In some embodiments, as shown in fig. 5, the first cannula 112 is centrally disposed within the first housing 111 and the second cannula 122 is centrally disposed within the second housing 121. Thereby, the first acoustic resonator 11 and the second acoustic resonator 12 are made to have an optimum sound deadening effect.
In some embodiments, as shown in FIG. 5, the spacing between the first acoustic resonator 11 and the second acoustic resonator 12 is L, and satisfies 50mm L300 mm.
Thus, when the distance between the first resonator 11 and the second resonator 12 satisfies the above-described value range, it is advantageous to achieve an optimum sound deadening effect of the first resonator 11 and the second resonator 12.
It should be noted that the sound absorption coefficient of the above-mentioned muffler assembly 10 in the high energy frequency range can reach above 0.9, and the sound absorption coefficient graph is shown in fig. 9, wherein the X-axis represents the resonance frequency (HZ), the Y-axis represents the coefficient, wherein: the broken line a1 represents the sound absorption coefficient, a2 reflection coefficient, A3 transmission coefficient.
The present invention also provides a pipe silencer 100,
the pipe silencer device 100 according to the embodiment of the present invention includes a pipe body 20 and the silencer assembly 10 for a pipe according to any one of the embodiments described above.
According to the pipe silencer 100 of the embodiment of the present invention, the first insertion tube 112 and the second insertion tube 122 of the silencer assembly 10 are both directly communicated with the inner cavity of the pipe body 20, so as to reduce the overall structural size of the silencer assembly 10, and facilitate the miniaturization design of the silencer assembly 10, and the first insertion tube 112 is located upstream of the second insertion tube 122 and the inner diameter of the first insertion tube 112 is smaller than the inner diameter of the second insertion tube 122, so that the first resonator 11 performs a resonance sound absorption function, and the second resonator 12 performs a local impedance sound insulation function, which is favorable for significantly improving the sound attenuation performance of the silencer assembly 10.
Further, the muffler assemblies 10 are provided in multiple sets, and the multiple sets of muffler assemblies 10 are distributed at intervals along the length direction and/or the circumferential direction of the pipe 20.
For example, as shown in fig. 7 and 8, the pipe body 20 is constructed as a square pipe, and the muffler assemblies 10 are provided in 8 groups, each side of the square pipe is provided with two groups of muffler assemblies 10, and the two groups of muffler assemblies 10 on the same side are spaced apart along the length direction of the pipe body 20.
Therefore, a broadband high-efficiency sound absorption structure can be realized by constructing the sound absorption array through the multiple groups of silencer assemblies 10, a certain sound absorption effect is also achieved at the high-order resonance frequency, the noise reduction performance of the sound absorption structure is favorably and remarkably widened, the sound absorption coefficient of the whole sound absorption frequency section reaches over 0.9, and the sound absorption coefficient curve is shown in fig. 10.
In fig. 10, the X-axis represents the resonance frequency (HZ) and the Y-axis represents the coefficient, where: the broken line a1 represents the sound absorption coefficient, a2 reflection coefficient, A3 transmission coefficient.
The muffler assembly 10 of the present invention has at least the following advantages over the prior art:
1. the silencer component 10 provided by the invention is used for reducing noise in a high-energy frequency section in a noise frequency spectrum, and a sound absorption strengthening design is realized through two resonators (a first resonator 11 and a second resonator 12) which have the same resonance frequency but different structures, wherein the first resonator 11 plays a resonance sound absorption role, the second resonator 12 plays a local impedance sound insulation role, the silencing performance of a specific frequency section can be obviously improved, and the sound absorption effect with the sound absorption coefficient of more than 0.9 in the sound absorption frequency section is obtained.
2. The first resonator 11 and the second resonator 12 are both configured as an inner-tube helmholtz resonator, and a sound absorption resonant cavity (a first sound absorption cavity 113) and a sound insulation resonant cavity (a second sound absorption cavity 123) are configured by inserting necks (a first insertion tube 112 and a second insertion tube 122) of the helmholtz resonator into the tube body 20, so that the structural size of the silencer assembly 10 can be significantly reduced under the same sound absorption frequency, deep subwavelength scale silencing is realized, and the miniaturization design of the silencer assembly 10 is more facilitated.
3. The sound absorption array can be constructed by the multiple groups of silencer components 10 to realize a broadband efficient sound absorption structure, and the sound absorption array also has a certain silencing effect at a high-order resonance frequency, so that the silencing performance of the sound absorption array can be remarkably widened.
4. The resonance frequencies of the first and second resonators 11 and 12, which have the same resonance frequency but different structures, are obtained from the frequencies corresponding to the acoustic impedance formula when the impedance is equal to zero, and the interval L between the first and second resonators 11 and 12 is maintained between 50mm and 300mm to obtain the optimum muffling performance.
5. A sound absorption array is constructed by multiple groups of silencer assemblies 10, so that a broadband efficient sound absorption structure can be realized, a certain silencing effect is also achieved at a high-order resonance frequency, and the silencing performance of the sound absorption array is remarkably widened.
6. Through setting up body 20, can play the effect of amortization when realizing its ventilation, when realizing the product amortization promptly, do not influence the ventilation and the heat dispersion of product.
The invention also provides a refrigerator.
The refrigerator according to the embodiment of the present invention includes the pipe silencing apparatus 100 of any one of the above embodiments.
When the pipe silencer 100 is installed in a refrigerator, the pipe 20 may be configured as a refrigerant pipe, an air duct, or a compressor compartment, etc., where noise is generated, that is, the silencer assembly 10 is directly installed in the refrigerant pipe, the air duct, or the compressor compartment to achieve the silencing effect.
Or the square air outlet can be arranged at the position where the noise is needed to be reduced, the pipe body 20 is directly communicated with the square air outlet, the noise reduction effect can be achieved, the pipe body 20 is arranged, the noise reduction effect can be achieved while the ventilation effect is achieved, and the ventilation and heat dissipation performance are not affected while the noise reduction effect is achieved.
According to the refrigerator of the embodiment of the present invention, the first insertion tube 112 and the second insertion tube 122 of the pipe silencing device 100 are both directly communicated with the inner cavity of the pipe body 20, so as to reduce the overall structural size of the silencer assembly 10, and facilitate the realization of the miniaturization design of the silencer assembly 10, and the first insertion tube 112 is located upstream of the second insertion tube 122 and the inner diameter of the first insertion tube 112 is smaller than the inner diameter of the second insertion tube 122, so that the first resonator 11 plays a role in resonance sound absorption, and the second resonator 12 plays a role in local impedance sound insulation, which is beneficial to significantly improving the silencing performance of the silencer assembly 10.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (12)
1. A muffler assembly for a pipe, comprising:
the first sounding device comprises a first shell and a first cannula communicated with the inside of the first shell;
the second resonator comprises a second shell and a second insertion pipe communicated with the second shell;
the first cannula and the second cannula are respectively communicated with the inner cavity of the tube body, the first cannula is positioned at the upstream of the second cannula, and the inner diameter of the first cannula is smaller than that of the second cannula.
2. The muffler assembly for a pipe of claim 1, wherein the inner cavity volume of the first housing is smaller than the inner cavity volume of the second housing.
3. The muffler assembly for a pipe of claim 1 wherein the first and second resonators are each configured as a bayonette helmholtz resonator and the resonant frequency of the first resonator is the same as the resonant frequency of the second resonator.
4. The muffler assembly for a pipe of claim 1, wherein the direction of extension of the lumen of the first cannula and the direction of extension of the lumen of the second cannula are both perpendicular to the direction of extension of the inner lumen of the pipe body.
5. The muffler assembly for piping according to claim 1, wherein the outer peripheral wall of the tubular body is provided with two mounting openings, and the first insertion tube and the second insertion tube are respectively opposed to or inserted into the two mounting openings.
6. The muffler assembly for a pipe of any one of claims 1-5, wherein the first cannula is located within the first housing and spaced apart from an inner peripheral wall of the first housing to define a first muffling chamber, and the second cannula is located within the second housing and spaced apart from an inner peripheral wall of the second housing to define a second muffling chamber.
7. The muffler assembly for piping according to claim 6,
the end surface of the first cannula is spaced apart from the inner wall of the first shell and is formed with a first outlet communicated with the first silencing cavity;
or the peripheral wall of the first insertion tube is provided with a first silencing hole, and the first silencing hole is communicated with the first silencing cavity.
8. The muffler assembly for piping according to claim 6,
the end surface of the second cannula is spaced from the inner wall of the second shell and is provided with a second outlet communicated with the second silencing cavity;
or the peripheral wall of the second insertion tube is provided with a second silencing hole which is communicated with the second silencing cavity.
9. The muffler assembly for a pipe of claim 6, wherein the first cannula is centrally disposed within the first housing and the second cannula is centrally disposed within the second housing.
10. A pipe silencer assembly comprising a pipe body and a silencer assembly for pipes according to any of claims 1 to 9.
11. The pipe silencer of claim 10, wherein the silencer assemblies are in a plurality of sets, and the sets of silencer assemblies are spaced apart along the length and/or circumference of the pipe body.
12. A refrigerator characterized by comprising the pipe silencing apparatus of any one of claims 10 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210819906.0A CN114992418A (en) | 2022-07-12 | 2022-07-12 | Silencer assembly for pipeline, pipeline silencing device and refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210819906.0A CN114992418A (en) | 2022-07-12 | 2022-07-12 | Silencer assembly for pipeline, pipeline silencing device and refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114992418A true CN114992418A (en) | 2022-09-02 |
Family
ID=83019321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210819906.0A Pending CN114992418A (en) | 2022-07-12 | 2022-07-12 | Silencer assembly for pipeline, pipeline silencing device and refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114992418A (en) |
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