CN109341052A - Silencer for air conditioner and air conditioner - Google Patents
Silencer for air conditioner and air conditioner Download PDFInfo
- Publication number
- CN109341052A CN109341052A CN201811215615.0A CN201811215615A CN109341052A CN 109341052 A CN109341052 A CN 109341052A CN 201811215615 A CN201811215615 A CN 201811215615A CN 109341052 A CN109341052 A CN 109341052A
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- Prior art keywords
- outer cylinder
- pipe
- silencer
- air inlet
- noise
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/242—Sound-absorbing material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/245—Means for preventing or suppressing noise using resonance
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Exhaust Silencers (AREA)
Abstract
The present invention provides a kind of silencer for air conditioner and air conditioners.Wherein, silencer for air conditioner includes: outer cylinder, internal partition, air inlet pipe, escape pipe and interference tube, and outer cylinder has two ports being oppositely arranged；Internal partition is installed in outer cylinder and outer cylinder is divided into two cavitys；Air inlet pipe and escape pipe are inserted into two ports of outer cylinder respectively, one in air inlet pipe and an air outlet pipe is the plug-in opening on interpolation pipe and insertion internal partition, through-hole is offered on interpolation pipe, Helmholtz resonator is limited between interpolation pipe, internal partition and outer cylinder, in air inlet pipe and an air outlet pipe another, between internal partition and outer cylinder limit expansion chamber；Interference tube is located on the outside of outer cylinder, and is connected in the air inlet pipe and an air outlet pipe on the outside of outer cylinder both ends.Silencer for air conditioner provided by the invention by the way that internal partition is arranged in outer cylinder, and increases interference tube on the outside of outer cylinder, designs the combination noise elimination structure that expansion is eliminated the noise, sympathetic response is eliminated the noise, interference is eliminated the noise, and increases deadening frequency band, improves acoustic attenuation performance.
Description
Technical field
The present invention relates to air-conditioning technical fields, more specifically, be related to a kind of silencer for air conditioner and it is a kind of include the sky
Call the air conditioner of silencer.
Background technique
Existing frequently-used silencer for air conditioner, noise reduction type are mostly single expansion cavity configuration, and erasure effect is poor,
Noise reduction frequency range is relatively narrow, cannot reach good noise elimination noise reduction effect, influence user experience effect.
The silencer of some compound noise reductions is proposed in the related technology, such as by concatenating two independent noise elimination cavitys,
Achieve the purpose that broadening noise reduction frequency range, but structure is complicated, manufacturing cost is high, and the length of silencer is longer, cannot integrate noise elimination
Effect and piping space layout.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.
For this purpose, the purpose of one aspect of the invention is, a kind of silencer for air conditioner is provided.
The purpose of another aspect of the invention is, provides a kind of air conditioner including above-mentioned silencer for air conditioner.
To achieve the above object, the technical solution of first aspect present invention provides a kind of silencer for air conditioner, comprising: outer
Cylinder, the outer cylinder have two ports being oppositely arranged；Internal partition is installed in the outer cylinder and the outer cylinder is divided into two
A cavity offers plug-in opening on the internal partition；Air inlet pipe and escape pipe are inserted into two ports of the outer cylinder, institute respectively
One in air inlet pipe and the escape pipe is stated as interpolation pipe, one end of the interpolation pipe is inserted into described by a cavity
Plug-in opening, offers through-hole on the tube body that the interpolation pipe is located in the cavity, the interpolation pipe, the internal partition and described
Helmholtz resonator is limited between outer tube inner wall, in the air inlet pipe and the escape pipe another, the internal partition
And expansion chamber is limited between the outer tube inner wall, the first connection is offered on the tube body that the air inlet pipe is located at outside the outer cylinder
Hole offers the second connecting hole on the tube body that the escape pipe is located at outside the outer cylinder；And interference tube, it is located at outside the outer cylinder
Side, and one end of the interference tube is connected to first connection hole, the other end is connected to second connection hole.
The silencer for air conditioner that above-mentioned technical proposal of the present invention provides, makes an uproar for the broadband section generated in outdoor machine of air-conditioner
Sound designs the combination noise elimination structure that expansion is eliminated the noise, Helmholtz sympathetic response is eliminated the noise, interference is eliminated the noise, can increase deadening frequency band, improves
Acoustic attenuation performance improves noise；Specifically, a part of air-flow enters in outer cylinder through air inlet pipe, is interpolation pipe for escape pipe
Scheme, nozzle of the air-flow first through air inlet pipe one end enters in expansion chamber, then enters in resonator through the through-hole on escape pipe,
Then it is flowed out through escape pipe, is the scheme of interpolation pipe for air inlet pipe, air-flow first enters He Muhuo through the through-hole in air inlet pipe
Hereby in resonator, then the nozzle through air inlet pipe one end enters in expansion chamber, then flows out through escape pipe, due into and out of tracheae
Caliber it is smaller, air-flow when flowing through expansion chamber, occur cross section expansion, shrink, generate acoustic impedance mismatch so that air-flow produce
Raw noise sound wave phenomena such as reflection, interference occur for the interface that acoustic impedance is mutated, cancel out each other, can be with by the sound wave of middle low frequency
Reduce Middle and low frequency noise；Air-flow when entering Helmholtz resonator, air-flow generate noise sound wave in resonance cavity structure of airtight
Intrinsic frequency it is identical when, Helmholtz sympathetic response will be generated, noise reduction of resonating, to adjust by rationally designing resonance cavity structure of airtight
The intrinsic frequency of whole Helmholtz resonator can eliminate certain indelible band frequency section noise such as high frequency noise of expansion chamber,
To combine the frequency of noise elimination section of expansion noise reduction, achieve the purpose that broadening deadening frequency band；Another part air-flow is by air inlet pipe
First connecting hole, through the second connecting hole on escape pipe, is eliminated the noise after interference tube with expanded noise elimination and Helmholtz sympathetic response
Converged afterwards by the air-flow that escape pipe flows out, by rationally designing the length of interference tube, so that through in the outer cylinder and road outer cylinder Wai Liangge
The two column sound waves that diameter is propagated are generating interference phenomenon in escape pipe exit after above-mentioned two propagated different distance, if
The amplitude of two column sound waves is identical, and in the area of space for the odd-multiple that phase difference is π, two column sound waves will cancel out each other namely phase
Wave crest reduces after opposite sound wave superposition, lower noise, thus by design interference tube, can further broadening deadening frequency band, drop
Low noise；Above structure is equivalent to eliminates the noise comprising three-level, eliminates the noise in conjunction with Helmholtz sympathetic response, expands to eliminate the noise and interfere and eliminate the noise, can
Effective broadening deadening frequency band, improves acoustic attenuation performance, achievees the purpose that reduce noise, promotes user experience effect.
In addition, outer cylinder is divided into two cavitys, such as carrying out necking to outer cylinder using internal partition built-in in outer cylinder
First internal partition is placed in outer cylinder when processing, then necking processing is carried out to outer cylinder, thus after carrying out necking processing to outer cylinder i.e.
It realizes and the space in outer cylinder is divided into two cavitys, simplify the structure of entire silencer for air conditioner, processing side
Just, manufacturing cost is low, can also increase the size of silencer outer cylinder in the size for not changing existing silencer outer cylinder or slightly
In the case where, such as in the case where not changing existing outer cylinder size, by increasing internal partition in outer cylinder and being added outside outer cylinder
Interference tube, change level-one silencer is three-level silencer, to be conducive to comprehensive noise elimination effect and be piped space layout, convenient for above-mentioned
Installation of the silencer for air conditioner in air-conditioning duct, compared to the scheme of two independent noise elimination cavitys of existing concatenation, this programme
It can be to promote noise elimination effect and lead to that silencer length is too long, it is inconvenient to install in air-conditioning duct to avoid silencer for air conditioner
Problem.
In addition, the silencer for air conditioner that above-mentioned technical proposal of the present invention provides can also have following additional technical feature:
In the above-mentioned technical solutions, it is preferable that the quantity of the through-hole is one or two.
The quantity of through-hole is preferably one to two, it is ensured that interpolation pipe and internal partition plug-in opening, internal partition and outer tube inner surface
The good leak tightness of the Helmholtz resonator of composition, can be improved the noise elimination effect of Helmholtz resonator.
In the above-mentioned technical solutions, it is preferable that the through hole is connected with resonating tube, and the resonating tube is entirely located at described
In Helmholtz resonator.
Resonating tube is connected by the through hole on interpolation pipe, can be designed specific by adjusting the length of resonating tube
Frequency, to combine, expansion is eliminated the noise and interference is eliminated the noise, and is eliminated the noise of wider frequency section, is achieved the purpose that reduce or eliminate noise；
Optionally, resonating tube is inserted into through-hole and is welded and fixed with interpolation pipe, easy to process, is connected firmly.
In the above-mentioned technical solutions, it is preferable that two ports of the outer cylinder are respectively air inlet and air outlet, it is described go out
Tracheae is the interpolation pipe, and one end of the interpolation pipe is inserted into the gas outlet and the plug-in opening and is welded with the outer cylinder
Fixed, one end of the air inlet pipe is inserted into the air inlet and is welded and fixed with the outer cylinder.
Expansion chamber is collectively formed in above scheme, air inlet pipe, internal partition and outer tube inner wall, expands noise reduction；Escape pipe, internal partition
And Helmholtz resonator is collectively formed in outer tube inner wall, noise reduction of resonating；Specifically, fraction enters silencer by air inlet pipe
Expansion chamber, noise is reduced by acoustic reactance, expand noise reduction；Expand noise reduction after air-flow through on escape pipe through-hole (or through even
Connect the resonating tube in through hole) enter Helmholtz resonator, Helmholtz sympathetic response is generated, noise is reduced；Fraction by into
The first connecting hole on tracheae, through the second connecting hole on escape pipe, is eliminated the noise after interference tube with expanded noise elimination and sympathetic response
Converged afterwards by the air-flow that escape pipe flows out, wave crest reduces after the superposition of opposite in phase sound wave, lower noise；Above structure is equivalent to three
Grade silencer eliminates the noise in conjunction with expansion noise elimination, Helmholtz sympathetic response and interference is eliminated the noise, and can effectively broadening deadening frequency band, raising eliminate the noise
Performance achievees the purpose that reduce noise.
In the above-mentioned technical solutions, it is preferable that two ports of the outer cylinder are respectively air inlet and air outlet, it is described into
Tracheae is the interpolation pipe, and one end of the interpolation pipe is inserted into the air inlet and the plug-in opening and is welded with the outer cylinder
Fixed, one end of the escape pipe is inserted into the gas outlet and is welded and fixed with the outer cylinder.
Helmholtz resonator is collectively formed in above scheme, air inlet pipe, internal partition and outer tube inner wall, noise reduction of resonating；Outlet
Expansion chamber is collectively formed in pipe, internal partition and outer tube inner wall, expands noise reduction；Specifically, fraction enters noise elimination by air inlet pipe
The Helmholtz resonator of device generates Helmholtz sympathetic response, reduces noise；Air-flow after sympathetic response noise reduction enters expansion chamber, passes through
Acoustic reactance reduces noise, expands noise reduction；Fraction is by the first connecting hole in air inlet pipe, after interference tube, through escape pipe
On the second connecting hole, with through sympathetic response is eliminated the noise and expand eliminate the noise after converged by the air-flow of escape pipe outflow, opposite in phase sound wave is folded
Rear wave crest is added to reduce, lower noise；Above structure is equivalent to three-level silencer, eliminates the noise in conjunction with Helmholtz sympathetic response, expansion is eliminated the noise
It eliminates the noise with interference, effectively broadening deadening frequency band, raising acoustic attenuation performance can achieve the purpose that reduce noise.
In the above-mentioned technical solutions, it is preferable that described one end of the interference tube be inserted into first connecting hole and with institute
It states air inlet pipe to be welded and fixed, the other end of the interference tube is inserted into second connecting hole and welds with the escape pipe
It is fixed.
Above-mentioned interference pipe and air inlet pipe, the connection type of interference tube and escape pipe, it is easy to process, it is connected firmly.
In the above-mentioned technical solutions, it is preferable that the length L2 of the interference tube meets: L2=L1+c*n/2f, wherein n is
Integer, c are the medium velocity of sound, and f is frequency of noise elimination, and L1 is the central point of first connecting hole and the center of second connecting hole
The distance between point.
Above scheme can adjust frequency of noise elimination section, thus in conjunction with swollen by rationally designing the value of L2 and L1 well
Swollen noise elimination and sympathetic response noise elimination reach broadening deadening frequency band, improve the effect of acoustic attenuation performance；It should be noted that L1 namely interference tube
Length of span.
In any of the above-described technical solution, it is preferable that the outer cylinder includes the cylindrical section at middle part, the necking section at both ends and company
Connect the changeover portion between the cylindrical section and the necking section, it is the air inlet pipe and the wherein one necking section fixation, described
Escape pipe is fixed with another necking section.
Above scheme, the necking of outer cylinder both ends process above-mentioned outer cylinder using necking down process, so that outer cylinder is easy to process, knot
Structure intensity is high；Specifically, first internal partition can be placed in outer cylinder when carrying out necking processing to outer cylinder, then contracted to outer cylinder
Space in outer cylinder is divided into two cavitys to realize after carrying out necking processing to outer cylinder by mouth processing；The two of outer cylinder
A necking section is welded and fixed with air inlet pipe and escape pipe respectively, so that outer cylinder and air inlet pipe, outer cylinder and escape pipe are connected firmly.
In the above-mentioned technical solutions, it is preferable that the outer diameter of cylindrical section is within the scope of 40mm~60mm in the middle part of the outer cylinder, institute
The length of outer cylinder is stated within the scope of 100mm~140mm.
Above scheme is conducive to comprehensive noise elimination effect and piping space layout, namely both by rationally designing outer cylinder size
Ensure that above-mentioned silencer for air conditioner has good noise elimination noise reduction effect, and convenient for above-mentioned silencer for air conditioner in air-conditioning duct
Installation.
In the above-mentioned technical solutions, it is preferable that the length of the expansion chamber is within the scope of 50mm~70mm, the He Muhuo
Hereby the length of resonator is within the scope of 50mm~70mm.
Above scheme, by rationally designing the length of expansion chamber and Helmholtz resonator, so that expansion chamber and He Mu
The noise that hereby resonator eliminates different frequency range respectively suddenly increases the deadening frequency band of entire silencer so that interference be combined to eliminate the noise, into
And acoustic attenuation performance is improved, achieve the purpose that reduce noise；Certainly, the length of expansion chamber and Helmholtz resonator is not limited to above-mentioned
It is specific to limit.
In the above-mentioned technical solutions, it is preferable that the center of the central point of first connecting hole and second connecting hole
The distance between point L1 is within the scope of 110mm~150mm.
Above scheme, namely design interference tube length of span in 110mm~150mm, to ensure that interference tube connection is in place
In air inlet pipe and escape pipe outside outer cylinder, it is ensured that the connection of interference tube is more convenient.
The technical solution of second aspect of the present invention provides a kind of air conditioner, including as described in any of the above-described technical solution
Silencer for air conditioner.
The air conditioner that above-mentioned technical proposal of the present invention provides, because it includes that idle call described in any of the above-described technical solution disappears
Sound device, thus the beneficial effect with silencer for air conditioner described in any of the above-described technical solution.
Additional aspect and advantage of the invention will become obviously in following description section, or practice through the invention
Recognize.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the schematic view of the front view of silencer for air conditioner described in one embodiment of the invention；
Fig. 2 be in Fig. 1 A-A to schematic cross-sectional view；
Fig. 3 is air flow direction schematic diagram in silencer for air conditioner shown in Fig. 2.
Wherein, corresponding relationship of the Fig. 1 into Fig. 3 between appended drawing reference and component names are as follows:
1 outer cylinder, 2 internal partitions, 21 plug-in openings, 3 air inlet pipe, 31 first connecting holes, 4 escape pipes, 41 second connecting holes, 42 is logical
Hole, 5 interference tubes, 6 resonating tubes；
Arrow in Fig. 3 indicates air flow direction.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
Implement in a manner of using other than the one described here, therefore, protection scope of the present invention is not by following public tool
The limitation of body embodiment.
The silencer for air conditioner and air conditioner of 1 to Fig. 3 description according to some embodiments of the invention with reference to the accompanying drawings.
As shown in Figure 1 to Figure 3, a kind of silencer for air conditioner provided according to some embodiments of the invention, comprising: outer cylinder 1,
Internal partition 2, air inlet pipe 3, escape pipe 4 and interference tube 5.
Specifically, outer cylinder 1 has two ports being oppositely arranged；Internal partition 2 is installed in outer cylinder 1 and separates outer cylinder 1
For two cavitys, plug-in opening 21 is offered on internal partition 2；Air inlet pipe 3 and escape pipe 4 are inserted into two ports of outer cylinder 1 respectively, into
One in tracheae 3 and escape pipe 4 is interpolation pipe, and one end of interpolation pipe is inserted into plug-in opening 21, interpolation pipe position by a cavity
Through-hole 42 is offered on tube body in the cavity, and it is total that Helmholtz is limited between 1 inner wall of interpolation pipe, internal partition 2 and outer cylinder
Tymapanum b, in air inlet pipe 3 and escape pipe 4 another, limit expansion chamber a, air inlet pipe 3 between 1 inner wall of internal partition 2 and outer cylinder
The first connecting hole 31 is offered on the tube body outside outer cylinder 1, offers the second company on the tube body that escape pipe 4 is located at outside outer cylinder 1
Connect hole 41；Interference tube 5 is located at 1 outside of outer cylinder, and one end of interference tube 5 is connected at the first connecting hole 31, the other end is connected to
At second connecting hole 41.
As shown in Figures 2 and 3, a in diagram indicates that expansion chamber, b indicate Helmholtz resonator.
The silencer for air conditioner that the above embodiment of the present invention provides, for the broadband section noise generated in outdoor machine of air-conditioner,
The combination noise elimination structure that expansion is eliminated the noise, Helmholtz sympathetic response is eliminated the noise, interference is eliminated the noise is designed, deadening frequency band can be increased, raising disappears
Acoustic performance improves noise；Specifically, silencer outer cylinder 1 is divided into two cavitys using internal partition 2, designs air inlet pipe 3 and gone out
One in tracheae 4 is interpolation pipe, and interpolation pipe is inserted into the plug-in opening 21 on internal partition 2, interpolation pipe and internal partition 2 and outer cylinder 1
Helmholtz resonator b is collectively formed in wall, and fraction enters Helmholtz resonator b, gas by the through-hole 42 on interpolation pipe
When identical as the intrinsic frequency of resonance cavity structure of airtight in the raw noise sound wave of miscarriage, Helmholtz sympathetic response will be generated, noise reduction of resonating,
To adjust the intrinsic frequency of Helmholtz resonator b by rationally designing resonance cavity structure of airtight, reach total using Helmholtz
Tymapanum b come eliminate certain frequency band noise, reduce noise purpose；In air inlet pipe 3 and escape pipe 4 another, internal partition 2 and outer
Expansion chamber a is collectively formed in 1 inner wall of cylinder, and air-flow enters the biggish expansion chamber a of sectional area by the lesser air inlet pipe 3 of caliber, then through pipe
The lesser escape pipe 4 of diameter flows out, and cross section expansion occurs, shrinks, generates acoustic impedance mismatch, so that the noise sound wave that air-flow generates
Phenomena such as reflection, interference occur for the interface of acoustic impedance mutation, the sound wave of middle low frequency is cancelled out each other, namely will be made an uproar by acoustic reactance
Sound reduces, and expands noise reduction, can reduce Middle and low frequency noise；Another part air-flow is passed through by the first connecting hole 31 in air inlet pipe 3
After interference tube 5, through the second connecting hole 41 on escape pipe 4, by escape pipe 4 after eliminating the noise with expanded noise elimination and Helmholtz sympathetic response
The air-flow of outflow converges, by rationally designing the length of interference tube 5, so that through in outer cylinder 1 and outer cylinder 1 outer two propagateds
Two column sound waves are generating interference phenomenon in 4 exit of escape pipe after above-mentioned two propagated different distance, if two column sound waves
Amplitude it is identical, phase difference be π odd-multiple area of space, two column sound waves will cancel out each other namely opposite in phase sound wave
After superposition wave crest reduce, lower noise, thus by design interference tube, can further broadening deadening frequency band, reduce noise；On
It states structure to be equivalent to comprising three-level noise elimination, eliminates the noise in conjunction with Helmholtz sympathetic response, expands and eliminate the noise and interfere noise elimination, effectively broadening can disappear
Audio frequency range improves acoustic attenuation performance, achievees the purpose that reduce noise, promotes user experience effect.
In addition, outer cylinder 1 is divided into two cavitys, such as carry out to outer cylinder 1 using internal partition 2 built-in in outer cylinder 1
Internal partition 2 is first placed in outer cylinder by necking when processing, then carries out necking processing to outer cylinder 1, to add carrying out necking to outer cylinder 1
It is realized after work and the space in outer cylinder 1 is divided into two cavitys, simplify the structure of entire silencer for air conditioner,
Easy to process, manufacturing cost is low, can also increase silencer outer cylinder in the size for not changing existing silencer outer cylinder 1 or slightly
In the case where 1 size, such as in the case where not changing existing outer cylinder size, by the increase internal partition 2 in outer cylinder 1 and outside
Interference tube 5 is added outside cylinder 1, change level-one silencer is three-level silencer, to be conducive to comprehensive noise elimination effect and with tube space cloth
Office, convenient for installation of the above-mentioned silencer for air conditioner in air-conditioning duct, compared to existing two independent noise elimination cavitys of concatenation
Scheme, this programme can to avoid silencer for air conditioner be promoted noise elimination effect and cause silencer length it is too long, in air-conditioning duct
The inconvenient problem of middle installation.
Preferably, as shown in Figure 1 to Figure 3,1 both ends necking of outer cylinder namely outer cylinder 1 use necking down process machine-shaping, tool
Body, first internal partition 2 can be placed in outer cylinder 1 when carrying out necking processing to outer cylinder 1, then necking processing is carried out to outer cylinder 1,
The space in outer cylinder 1 is divided into two cavitys to realize after carrying out necking processing to outer cylinder 1.
Preferably, the quantity of through-hole 42 is one or two, it is ensured that interpolation pipe and 2 plug-in opening 21 of internal partition, internal partition 2 and
The good leak tightness for the Helmholtz resonator b that 1 inner surface of outer cylinder is constituted, can be improved the noise elimination effect of Helmholtz resonator b；Such as
Shown in Fig. 2 and Fig. 3, the quantity of through-hole 42 is one.
Optionally, as shown in Figures 2 and 3, resonating tube 6 is connected at through-hole 42, it is total that resonating tube 6 is entirely located at Helmholtz
In tymapanum b, specific frequency can be designed by adjusting the length of resonating tube 6, to combine, expansion is eliminated the noise and interference is eliminated the noise,
The noise for eliminating wider frequency section, achievees the purpose that reduce or eliminate noise；Optionally, resonating tube 6 is inserted into through-hole 42 and and interpolation
Pipe is welded and fixed, easy to process, is connected firmly.
Optionally, as shown in Figures 2 and 3, resonating tube 6 is the bend pipe being connected at through-hole 42, mainly total by Helmholtz
The space of tymapanum b limits, in the small volume of Helmholtz resonator b, by the way that resonating tube 6 is designed to bend pipe, it is reasonable to come
The length for adjusting resonating tube 6, designs specific frequency, to combine expansion to eliminate the noise, interfere and eliminate the noise, eliminates making an uproar for wider frequency section
Sound achievees the purpose that reduce or eliminate noise；Preferably, resonating tube 6 is bent along flow direction of the air-flow in interpolation pipe.When
So, if not limited by the space of Helmholtz resonator b, resonating tube 6 can also be designed to straight tube；Resonating tube 6 is specifically set
Length is counted, can rationally design, be not specifically limited herein according to the actual situation.
Embodiment one
As shown in Figures 2 and 3, two ports of outer cylinder 1 are respectively air inlet and air outlet, and escape pipe 4 is interpolation pipe, interior
One end insertion gas outlet of intubation and plug-in opening 21 are simultaneously welded and fixed with outer cylinder 1, one end of air inlet pipe 3 insertion air inlet and with
Outer cylinder 1 is welded and fixed.
Expansion chamber a is collectively formed in above-described embodiment, air inlet pipe 3, internal partition 2 and 1 inner wall of outer cylinder, expands noise reduction；Escape pipe
4, Helmholtz resonator b is collectively formed in internal partition 2 and 1 inner wall of outer cylinder, noise reduction of resonating；Specifically, fraction passes through air inlet
Pipe 3 enters the expansion chamber a of silencer, is reduced noise by acoustic reactance, expands noise reduction；Air-flow after expanding noise reduction is through escape pipe 4
On through-hole 42 (or resonating tube 6 through being connected at through-hole 42) enter Helmholtz resonator b, generate Helmholtz sympathetic response,
Reduce noise；Fraction is by the first connecting hole 31 in air inlet pipe 3, after interference tube 5, connects through second on escape pipe 4
Hole 41 is connect, is converged after eliminating the noise with expanded noise elimination and sympathetic response by the air-flow that escape pipe 4 flows out, wave crest after the superposition of opposite in phase sound wave
Reduce, lower noise；Above structure is equivalent to three-level silencer, eliminates the noise in conjunction with expansion, Helmholtz sympathetic response noise elimination and interference disappear
Sound effectively broadening deadening frequency band, raising acoustic attenuation performance can achieve the purpose that reduce noise.
Embodiment two:
Two ports of outer cylinder 1 are respectively air inlet and air outlet, and air inlet pipe 3 is interpolation pipe, and one end of interpolation pipe is inserted into
Air inlet and plug-in opening 21 are simultaneously welded and fixed with outer cylinder 1, and one end insertion gas outlet of escape pipe 4 is simultaneously welded and fixed with outer cylinder 1.
Helmholtz resonator b is collectively formed in above-described embodiment, air inlet pipe 3, internal partition 2 and 1 inner wall of outer cylinder, and resonance disappears
Sound；Expansion chamber a is collectively formed in escape pipe 4, internal partition 2 and 1 inner wall of outer cylinder, expands noise reduction；Specifically, fraction passes through air inlet
Pipe 3 enters the Helmholtz resonator b of silencer, generates Helmholtz sympathetic response, reduces noise；Air-flow after sympathetic response noise reduction enters
Expansion chamber a is reduced noise by acoustic reactance, expands noise reduction；Fraction is by the first connecting hole 31 in air inlet pipe 3, by dry
After relating to pipe 5, through the second connecting hole 41 on escape pipe 4, with the air-flow flowed out after sympathetic response is eliminated the noise and expands noise elimination by escape pipe 4
Converge, wave crest reduces after the superposition of opposite in phase sound wave, lower noise；Above structure is equivalent to three-level silencer, in conjunction with He Muhuo
Hereby sympathetic response eliminates the noise, expands noise elimination and interference noise elimination, effectively broadening deadening frequency band, raising acoustic attenuation performance can reach reduction noise
Purpose.
In any of the above-described embodiment, it is preferable that as shown in Figure 1 to Figure 3, the first connecting hole is inserted into one end of interference tube 5
It 31 and being welded and fixed with air inlet pipe 3, the other end of interference tube 5 is inserted into the second connecting hole 41 and is welded and fixed with escape pipe 4, on
Interference tube 5 and air inlet pipe 3, the connection type of interference tube 5 and escape pipe 4 are stated, it is easy to process, it is connected firmly.
Optionally, as shown in Figure 1, air inlet pipe 3 and escape pipe 4 are located on same axis, interference tube 5 includes being parallel to air inlet
The straight pipe of the setting of pipe 3 and two connection pipeline sections for being connected to straight pipe both ends, wherein a connection pipeline section is connected to first
At connecting hole 31, another connection pipeline section be connected at the second connecting hole 41, to ensure smooth outflow of the air-flow in interference tube 5,
So that it is guaranteed that the interference noise elimination effect of interference tube 5.
Preferably, the length L2 of interference tube 5 meets: L2=L1+c*n/2f, wherein n is integer, and c is the medium velocity of sound, and f is
Frequency of noise elimination, L1 be the first connecting hole 31 central point and the second connecting hole 41 the distance between central point, as shown in Figure 1,
L1 in diagram indicates the central point of the first connecting hole 31 and the distance between the central point of the second connecting hole 41.
By rationally design L2 and L1 value, frequency of noise elimination section can be adjusted well, thus combine expansion eliminate the noise and
Sympathetic response noise elimination reaches broadening deadening frequency band, improves the effect of acoustic attenuation performance；It should be noted that the span of L1 namely interference tube 5
Length.
In any of the above-described embodiment, it is preferable that as shown in Figure 1, outer cylinder 1 includes the necking of the cylindrical section, both ends at middle part
Section and the changeover portion that is connected between cylindrical section and necking section, air inlet pipe 3 and a wherein necking section fixation, escape pipe 4 with it is another
Necking section is fixed, and processes above-mentioned outer cylinder 1 using necking down process, so that outer cylinder 1 is easy to process, structural strength is high.
Preferably, the outer diameter of 1 middle part cylindrical section of outer cylinder is within the scope of 40mm~60mm, the length of outer cylinder 1 100mm~
Within the scope of 140mm, as shown in Figure 1, the D in diagram indicates that the outer diameter of 1 middle part cylindrical section of outer cylinder, L indicate the length of outer cylinder 1.
By rationally designing 1 size of outer cylinder, be conducive to comprehensive noise elimination effect and piping space layout, namely both ensured above-mentioned
Silencer for air conditioner has good noise elimination noise reduction effect, and is convenient for installation of the above-mentioned silencer for air conditioner in air-conditioning duct.
Certainly, the wall thickness of outer cylinder 1 is relatively thin, and the wall thickness of outer cylinder 1 also can be ignored herein.
Preferably, the length of expansion chamber a is within the scope of 50mm~70mm, the length of Helmholtz resonator b 50mm~
Within the scope of 70mm.
By rationally designing the length of expansion chamber a and Helmholtz resonator b, so that expansion chamber a and Helmholtz are total
Tymapanum b eliminates the noise of different frequency range respectively, so that interference be combined to eliminate the noise, increases the deadening frequency band of entire silencer, Jin Erti
High acoustic attenuation performance achievees the purpose that reduce noise；Certainly, the length of expansion chamber a and Helmholtz resonator b are not limited to above-mentioned tool
Body limits.
Preferably, as shown in Figure 1, the distance between the central point of the central point of the first connecting hole 31 and the second connecting hole 41
L1 is within the scope of 110mm~150mm.
Namely design interference tube 5 length of span in 110mm~150mm, to ensure that interference tube 5 is connected to positioned at outer cylinder 1
In external air inlet pipe 3 and escape pipe 4, it is ensured that the connection of interference tube 5 is more convenient.
In any of the above-described embodiment, it is preferable that outer cylinder 1 is stainless steel material.
Silencer outer cylinder 1 preferably uses stainless steel material, and such as SUS439, opposite copper material price is lower, to reduce manufacture
Cost；The other materials such as copper product can also be used in certain silencer outer cylinder 1.
In one specific embodiment, silencer for air conditioner includes outer cylinder 1, air inlet pipe 3, escape pipe 4, internal partition 2, interference tube
5 and resonating tube 6,1 both ends necking of outer cylinder is inserted into outer cylinder 1 into and out of tracheae and is welded with outer cylinder 1；Air inlet pipe 3, internal partition 2 and outer
Expansion chamber a is constituted between cylinder 1；Escape pipe 4 is inserted into 2 interstitial hole of internal partition (i.e. plug-in opening 21), escape pipe 4, internal partition 2 and outer cylinder
Helmholtz resonator b is constituted between 1；Opened on escape pipe 4 aperture (i.e. through-hole 42), resonating tube 6 insert in the hole and with escape pipe 4
Welding；Stretch out outer cylinder 1 into and out of tracheae, extend out to outside outer cylinder 1 into and out of equal aperture (i.e. the first connecting hole 31 and second on tracheae
Connecting hole 41), interference tube 5 inserts in the hole and welds with into and out of tracheae；Specifically, as in Fig. 3 arrow indicate air flow direction,
Fraction enters expansion chamber a by air inlet pipe 3, and expansion is eliminated the noise；Fraction is by aperture on escape pipe 4 later, by sympathetic response
Pipe 6 enters Helmholtz resonator b, and sympathetic response is eliminated the noise；Fraction is led to by 3 end aperture of air inlet pipe (i.e. the first connecting hole 31)
4 end air-flow of escape pipe after crossing interference tube 5, through the second connecting hole 41 on escape pipe 4, after eliminating the noise with expanded noise elimination and sympathetic response
Converge, wave crest reduces after the superposition of opposite in phase sound wave, lower noise；This structure is eliminated the noise comprising three-level, is eliminated the noise in conjunction with expansion, He Mu
Suddenly hereby sympathetic response eliminate the noise and interference eliminate the noise, can effectively broadening deadening frequency band, improve acoustic attenuation performance.
The embodiment of second aspect of the present invention provides a kind of air conditioner, and the idle call including such as above-mentioned any embodiment disappears
Sound device.
The air conditioner that the above embodiment of the present invention provides, because it includes the silencer for air conditioner of any of the above-described embodiment, because
And the beneficial effect of the silencer for air conditioner with any of the above-described embodiment, details are not described herein.
In conclusion silencer for air conditioner provided by the invention leads to for the broadband section noise generated in outdoor machine of air-conditioner
Cross and internal partition be set in outer cylinder, and increase interference tube on the outside of outer cylinder, design expansion eliminate the noise, Helmholtz sympathetic response eliminate the noise,
Interfere the combination noise elimination structure eliminated the noise, deadening frequency band can be increased, improves acoustic attenuation performance；And structure simplifies, manufacturing cost is low, also
Conducive to comprehensive noise elimination effect and piping space layout.
In the description of the present invention unless specifically defined or limited otherwise, term " connected ", " connection ", " fixation " etc.
It shall be understood in a broad sense, for example, " connection " may be fixed connection or may be dismantle connection, or integral connection, or electricity
Connection；It can be directly connected, it can also be indirectly connected through an intermediary.For the ordinary skill in the art,
The specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one reality of the invention
It applies in example or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or reality
Example.Moreover, description particular features, structures, materials, or characteristics can in any one or more of the embodiments or examples with
Suitable mode combines.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (12)
1. a kind of silencer for air conditioner characterized by comprising
Outer cylinder, the outer cylinder have two ports being oppositely arranged；
Internal partition is installed in the outer cylinder and the outer cylinder is divided into two cavitys, offers inserting on the internal partition
Hole；
Air inlet pipe and escape pipe, are inserted into two ports of the outer cylinder respectively, and one in the air inlet pipe and the escape pipe
One end for interpolation pipe, the interpolation pipe is inserted into the plug-in opening by a cavity, and the interpolation pipe is located at the chamber
Through-hole is offered on tube body in body, limits Helmholtz between the interpolation pipe, the internal partition and the outer tube inner wall
Resonator, in the air inlet pipe and the escape pipe another, limit between the internal partition and the outer tube inner wall it is swollen
Swollen chamber offers the first connecting hole on the tube body that the air inlet pipe is located at outside the outer cylinder, and the escape pipe is located at the outer cylinder
The second connecting hole is offered on outer tube body；With
Interference tube is located on the outside of the outer cylinder, and one end of the interference tube is connected to first connection hole, the other end connects
It connects in second connection hole.
2. silencer for air conditioner according to claim 1, which is characterized in that
The quantity of the through-hole is one or two.
3. silencer for air conditioner according to claim 1, which is characterized in that
The through hole is connected with resonating tube, and the resonating tube is entirely located in the Helmholtz resonator.
4. silencer for air conditioner according to claim 1, which is characterized in that
Two ports of the outer cylinder are respectively air inlet and air outlet, and the escape pipe is the interpolation pipe, the interpolation pipe
One end be inserted into the gas outlet and the plug-in opening and be welded and fixed with the outer cylinder, institute is inserted into one end of the air inlet pipe
It states air inlet and is welded and fixed with the outer cylinder.
5. silencer for air conditioner according to claim 1, which is characterized in that
Two ports of the outer cylinder are respectively air inlet and air outlet, and the air inlet pipe is the interpolation pipe, the interpolation pipe
One end be inserted into the air inlet and the plug-in opening and be welded and fixed with the outer cylinder, institute is inserted into one end of the escape pipe
It states gas outlet and is welded and fixed with the outer cylinder.
6. silencer for air conditioner according to claim 1, which is characterized in that
Described one end of the interference tube is inserted into first connecting hole and is welded and fixed with the air inlet pipe, the interference tube
The other end be inserted into second connecting hole and be welded and fixed with the escape pipe.
7. silencer for air conditioner according to claim 1, which is characterized in that
The length L2 of the interference tube meets: L2=L1+c*n/2f, wherein n is integer, and c is the medium velocity of sound, and f is frequency of eliminating the noise
Rate, L1 are the central point of first connecting hole and the distance between the central point of second connecting hole.
8. silencer for air conditioner according to any one of claim 1 to 7, which is characterized in that
The outer cylinder include middle part cylindrical section, both ends necking section and be connected between the cylindrical section and the necking section
Changeover portion, the air inlet pipe are fixed with the wherein one necking section fixation, the escape pipe and another necking section.
9. silencer for air conditioner according to claim 8, which is characterized in that
The outer diameter of cylindrical section is within the scope of 40mm~60mm in the middle part of the outer cylinder, and the length of the outer cylinder is in 100mm~140mm model
In enclosing.
10. silencer for air conditioner according to claim 9, which is characterized in that
The length of the expansion chamber is within the scope of 50mm~70mm, and the length of the Helmholtz resonator is in 50mm~70mm model
In enclosing.
11. silencer for air conditioner according to claim 9, which is characterized in that
The distance between the central point of the central point of first connecting hole and second connecting hole L1 is in 110mm~150mm
In range.
12. a kind of air conditioner, which is characterized in that including the silencer for air conditioner as described in any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811215615.0A CN109341052B (en) | 2018-10-18 | 2018-10-18 | Silencer for air conditioner and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811215615.0A CN109341052B (en) | 2018-10-18 | 2018-10-18 | Silencer for air conditioner and air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109341052A true CN109341052A (en) | 2019-02-15 |
| CN109341052B CN109341052B (en) | 2020-09-11 |
Family
ID=65310112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811215615.0A Active CN109341052B (en) | 2018-10-18 | 2018-10-18 | Silencer for air conditioner and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109341052B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113771593A (en) * | 2021-09-27 | 2021-12-10 | 重庆建设车用空调器有限责任公司 | Multi-stage noise elimination structure of rotary vane type compressor shell of air conditioner for vehicle |
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| CN202254196U (en) * | 2011-07-27 | 2012-05-30 | 浙江方宏空调设备有限公司 | Vehicle air conditioning pipeline pressure silencer |
| CN203274207U (en) * | 2013-06-07 | 2013-11-06 | 宁波奥克斯电气有限公司 | Air conditioner silencer |
| CN106015818A (en) * | 2016-07-06 | 2016-10-12 | 南京常荣声学股份有限公司 | Noise elimination energy-saving pipeline |
| CN107542668A (en) * | 2017-09-11 | 2018-01-05 | 珠海格力电器股份有限公司 | Noise reduction device, compressor and air conditioner |
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| JPS50136804U (en) * | 1974-04-26 | 1975-11-11 | ||
| JP2000320319A (en) * | 1999-05-11 | 2000-11-21 | Kojima Press Co Ltd | Muffler |
| JP2002327612A (en) * | 2001-04-27 | 2002-11-15 | Shintaro Yamada | Noise suppressor |
| US7497300B2 (en) * | 2004-03-18 | 2009-03-03 | D Angelo John P | Noise reduction tubes |
| CN202254196U (en) * | 2011-07-27 | 2012-05-30 | 浙江方宏空调设备有限公司 | Vehicle air conditioning pipeline pressure silencer |
| CN203274207U (en) * | 2013-06-07 | 2013-11-06 | 宁波奥克斯电气有限公司 | Air conditioner silencer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113771593A (en) * | 2021-09-27 | 2021-12-10 | 重庆建设车用空调器有限责任公司 | Multi-stage noise elimination structure of rotary vane type compressor shell of air conditioner for vehicle |
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| Publication number | Publication date |
|---|---|
| CN109341052B (en) | 2020-09-11 |
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