CN104422109B - For air-conditioning silencer and there is its air-conditioning - Google Patents
For air-conditioning silencer and there is its air-conditioning Download PDFInfo
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- CN104422109B CN104422109B CN201310377446.1A CN201310377446A CN104422109B CN 104422109 B CN104422109 B CN 104422109B CN 201310377446 A CN201310377446 A CN 201310377446A CN 104422109 B CN104422109 B CN 104422109B
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- noise elimination
- elimination cavity
- air conditioner
- silencer
- port
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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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention discloses a kind of silencer for air conditioner and there is its air-conditioning.The silencer includes：First noise elimination cavity, the opposing sidewalls of the first noise elimination cavity are provided with first port and second port；Air inlet pipe, air inlet pipe are inserted into the first noise elimination cavity body by first port, and air inlet pipe is semi-closed structure；Second noise elimination cavity, the second noise elimination cavity are located on the first noise elimination cavity；Escape pipe, one end of escape pipe are extend into the first noise elimination cavity body by second port, and the other end of escape pipe passes through the second noise elimination cavity, and the body positioned at the second noise elimination cavity of escape pipe is provided with multiple second through hole escape pipes；Sound-absorbing material, in the chamber that the inwall of outer wall and the second noise elimination cavity that sound-absorbing material is filled in escape pipe limits.Silencer for air conditioner according to embodiments of the present invention is a kind of impedance composite muffler, has the characteristics of wider noise elimination frequency band and higher sound deadening capacity.
Description
Technical field
The present invention relates to a kind of silencer for air-conditioning and there is its air-conditioning.
Background technology
Silencer for air conditioner is that air-flow caused by pulse pneumatic flowing is made an uproar in pipeline during compressor operating in order to eliminate
Sound.The conventional silencer of air-conditioning is usually reactive muffler at present, is to utilize sound of the device in pipeline at acoustical behavior mutation
Reflex, by the unexpected expansion of pipeline section, generation acoustic impedance mismatch is shunk, the sound wave of some frequencies is dashed forward in acoustic impedance
Phenomena such as reflection, interference, occurs for the interface of change, and sound wave is cancelled out each other to reach the purpose of noise elimination.
The conventional silencer of air-conditioning is single-unit expansion muffler at present, due to cost and performance requirement, it is impossible to by single-unit
Expanding muffler designs very long, therefore the silencer presence of the type much passes through frequency.During operation of air conditioner, pulsation
Noise caused by air current flow is mostly the noise of medium-high frequency, and the silencer is unsatisfactory to reducing pulse pneumatic hydrodynamic noise, because
This single reactive muffler effect can not fully meet actual demand.
The content of the invention
It is contemplated that at least solves one of technical problem present in prior art.
Therefore, it is an object of the present invention to propose a kind of use with wider noise elimination frequency band and higher sound deadening capacity
In the silencer of air conditioner.
It is another object of the present invention to propose a kind of air conditioner with above-mentioned silencer.
The silencer for air conditioner of embodiment includes according to a first aspect of the present invention：First noise elimination cavity, described
The opposing sidewalls of one noise elimination cavity are provided with first port and second port；Air inlet pipe, the air inlet pipe pass through the first end
Mouth is inserted into the first noise elimination cavity body, and the air inlet pipe is semi-closed structure, and the air inlet pipe disappears positioned at described first
Body in operatic tunes body is laid with multiple first through hole；Second noise elimination cavity, the second noise elimination cavity are located at described first and disappeared
On operatic tunes body；Escape pipe, one end of the escape pipe is extend into the first noise elimination cavity body by the second port, described
The other end of escape pipe passes through the second noise elimination cavity, and the escape pipe is set on the body of the second noise elimination cavity
There are multiple second through holes；Sound-absorbing material, the sound-absorbing material are filled in the outer wall of the escape pipe and the second noise elimination cavity
The chamber that limits of inwall in.
Acoustic wave filter structure for air conditioner according to embodiments of the present invention can sketch answering for the material of two pipes, two chamber one
Structure is closed, the flow path in silencer of the pulse pneumatic in pipeline is as follows：Compared with air inlet pipe → larger cross section of pipe with small pipe diameter
First noise elimination cavity → compared with the escape pipe of pipe with small pipe diameter, and the through hole less than itself caliber is designed with air inlet pipe and escape pipe,
Muffler, which has, repeatedly occurs cross section expansion, contraction structure, produces acoustic impedance mismatch, so as to be advantageous to pulse pneumatic production
Phenomena such as reflection, interference occurs in the interface that acoustic impedance is mutated for raw noise sound wave, the sound wave of middle low frequency cancel out each other with up to
To the purpose of noise elimination.In addition, sound-absorbing material can absorb the high frequency noise in escape pipe by the second through hole of escape pipe, so as to
Further improve the sound deadening capacity of silencer.
Because the above-mentioned silencer for air conditioner is resistant, resistive mixed structure, low frequency in can not only eliminating
Noise, the noise of high frequency can also be eliminated.Therefore, the silencer for air conditioner according to embodiments of the present invention has wider
Noise elimination frequency band and higher sound deadening capacity, can effectively eliminate the noise in air conditioner duct.
In addition, the silencer for air conditioner according to embodiments of the present invention, also with following additional technical feature：
According to one embodiment of present invention, the outer wall of the body in the first noise elimination cavity body of the air inlet pipe
Formed with gap between the inwall of the first noise elimination cavity.
According to one embodiment of present invention, the outer wall of the body in the first noise elimination cavity body of the escape pipe
Formed with gap between the inwall of the first noise elimination cavity.
Silencer according to an embodiment of the invention for air conditioner, the via area of the multiple first through hole
Summation is 1.5-2 times of the cross-sectional area of the air inlet pipe.So as to reduce the flow velocity of pulse pneumatic, the noise of air current flow
Also decrease, and then reduce the pressure loss, increase the sound deadening capacity of silencer.
Silencer according to an embodiment of the invention for air conditioner, the air inlet pipe are eliminated the noise positioned at described first
The length of part in cavity accounts at least half of the total length of the air inlet pipe.Eliminated the noise thus, it is possible to further improve
The sound deadening capacity of device.
Silencer according to an embodiment of the invention for air conditioner, the aperture of second through hole are less than or equal to institute
State the 1/8 of the caliber of escape pipe.So as to which the noise of low and medium frequency further to be changed into the noise of upper frequency, be advantageous to
Absorption of the sound-absorbing material to noise, so as to improve the sound deadening capacity of silencer.Disappear further, it is also possible to reduce refrigerant and be trapped in second
In operatic tunes body, ensure the refrigeration of air-conditioning.
Silencer according to an embodiment of the invention for air conditioner, the percent opening of the escape pipe are more than 15%.By
This, further improves the sound-damping qualities of silencer.
Silencer according to an embodiment of the invention for air conditioner, the first noise elimination cavity and described second disappear
Operatic tunes body is respectively revolving body, and the first noise elimination cavity and second cavity are coaxially disposed.Consequently facilitating first eliminates the noise
The assembling of cavity and the second noise elimination cavity, and material can be saved.
Silencer according to an embodiment of the invention for air conditioner, the first noise elimination cavity include：Preceding connection
Section, the first port are located on the preceding linkage section；Wide diameter portion, the wide diameter portion are connected with the rear end of the preceding linkage section,
Expanding chamber is provided with the wide diameter portion, the cross-sectional area of the expanding chamber gradually increases on vertical direction；Linkage section,
The front end of the linkage section is connected with the rear end of the wide diameter portion, and the linkage section has the connecting cavity of cylinder；Receive footpath portion, institute
State receipts footpath portion with the rear end of the linkage section to be connected, be provided with the receipts footpath portion and receive footpath chamber, the cross-sectional area for receiving footpath chamber exists
It is gradually reduced on vertical direction；Linkage section afterwards, the rear linkage section are connected with the rear end in the receipts footpath portion, and described second
Port is set in the rear on linkage section.
Silencer according to an embodiment of the invention for air conditioner, the cross-sectional area of the connecting cavity and described the
The area ratio of the cross-sectional area of Single port is 4-16.Thus the eradicating efficacy of silencer centering low frequency noise is further improved.
Silencer according to an embodiment of the invention for air conditioner, between the first port and the air inlet pipe
For interference fit.Thus the bonding strength between air inlet pipe and the first noise elimination cavity is further improved.
Silencer according to an embodiment of the invention for air conditioner, the inwall of the first port are provided with first
Positioning convex, first positioning convex are inwardly concaved by the part of the preceding linkage section and formed.Thus, it is possible to effectively control
Air inlet pipe processed is inserted into the length of the first noise elimination chamber.
Silencer according to an embodiment of the invention for air conditioner, between the second port and the escape pipe
For interference fit.Thus, the bonding strength between escape pipe and the first noise elimination cavity is improved.
Silencer according to an embodiment of the invention for air conditioner, the inwall of the second port are provided with second
Positioning convex, second positioning convex are inwardly concaved by the part of the rear linkage section and formed.Thus, outlet is effectively controlled
Pipe stretches into the length of the first noise elimination cavity.
Silencer according to an embodiment of the invention for air conditioner, the second noise elimination cavity include：Body, institute
The front side for stating body is opened wide, and the cavity of cylinder is provided with the body, and the body is fixed in the receipts footpath portion；Undergauge
Portion, the reducing diameter part are connected with the rear end of the body, and undergauge chamber, the cross-sectional area of the undergauge chamber are provided with the reducing diameter part
It is gradually reduced on vertical direction；Connecting portion, the connecting portion are connected with the rear end of the reducing diameter part, the connecting portion
It is provided with the 3rd port coordinated with the escape pipe.
The air-conditioning of embodiment, which includes the above-mentioned silencer for air conditioner, according to a second aspect of the present invention includes blast pipe
With the above-mentioned silencer for air-conditioning, because the silencer for air conditioner has wider noise elimination frequency band and higher sound deadening capacity
The characteristics of, therefore air-conditioning according to embodiments of the present invention also has higher noise elimination frequency band and sound deadening capacity.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the structural representation of the silencer according to an embodiment of the invention for air conditioner；
Fig. 2 is the structural representation of the air inlet pipe of the silencer according to an embodiment of the invention for air conditioner；
Fig. 3 is the structural representation of the first noise elimination cavity of the silencer according to an embodiment of the invention for air conditioner
Figure；
Fig. 4 is the enlarged diagram of a-quadrant in Fig. 3；
Fig. 5 is the structural representation of the second noise elimination cavity of the silencer according to an embodiment of the invention for air conditioner
Figure；
Fig. 6 is the structural representation of the escape pipe of the silencer according to an embodiment of the invention for air conditioner.
Reference：
Silencer 100；Air inlet pipe 1；First through hole 11；
First noise elimination cavity 2；Preceding linkage section 21；Wide diameter portion 22；Middle linkage section 23；Receive footpath portion 24；Linkage section 25 afterwards；The
Single port 26；First positioning convex 261；Second port 27；
Second noise elimination cavity 3；Body 31；Reducing diameter part 32；Connecting portion 33；3rd port 34；
Sound-absorbing material 4；
Escape pipe 5；Second through hole 51.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that " " center ", " longitudinal direction ", " transverse direction ", "front", "rear" etc. refer to term
The orientation or position relationship shown is based on orientation shown in the drawings or position relationship, is for only for ease of the description present invention and simplifies
Description, rather than the device or element of instruction or hint meaning must have specific orientation, with specific azimuth configuration and behaviour
Make, therefore be not considered as limiting the invention.In addition, term " first ", " second " are only used for describing purpose, and can not manage
Solve to indicate or implying relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
In addition, in the description of the invention, unless otherwise indicated, " multiple " are meant that two or more.
Below with reference to Fig. 1 to Fig. 6, the silencer 100 for air conditioner of description embodiment according to a first aspect of the present invention,
The silencer 100 is located at the blast pipe of air conditioner（It is not shown）Pipeline in, silencer 100 be used for eliminate compressor operating process
Pneumatic noise caused by pulse pneumatic flowing in middle pipeline.Wherein, blast pipe is a part for air-conditioning duct, is used for and evaporator
（It is not shown）Connection.
As shown in figure 1, the silencer 100 for air conditioner according to embodiments of the present invention includes：First noise elimination cavity 2,
Air inlet pipe 1, the second noise elimination cavity 3, escape pipe 5 and sound-absorbing material 4.
Specifically, as shown in Figures 1 and 3, the opposing sidewalls of the first noise elimination cavity 2 are provided with first port 26 and second
Port 27, that is to say, that the first noise elimination cavity 2 is the cavity body structure of both ends open, and air inlet pipe 1 is inserted into the from first port 26
In one noise elimination cavity 2, i.e. one end of air inlet pipe 1 is outside the first noise elimination cavity 2, and the other end of air inlet pipe 1 is in the first noise elimination cavity 2
Interior, one end outside the first noise elimination cavity 2 of air inlet pipe 1 is suitable to be connected with blast pipe, i.e. the pulse pneumatic of blast pipe passes through
It is flowed into after air inlet pipe 1 in first noise elimination cavity 2.Wherein, in Fig. 1 and Fig. 3 example, one end of air inlet pipe 1 refer into
The front end of tracheae 1, the other end of air inlet pipe 1 refer to the rear end of air inlet pipe 1, the finger of first port 26 of the first noise elimination cavity 2
It is the front port of the first noise elimination cavity 2, the second port 27 of the first noise elimination cavity 2 refers to the rear port of the first noise elimination cavity 2.
As depicted in figs. 1 and 2, in better embodiment of the present invention, air inlet pipe 1 is semi-closed structure, and insertion first disappears
End in operatic tunes body 2 is in closed state, and the body portion in the first noise elimination cavity 2 of air inlet pipe 1 is laid with multiple
First through hole 11.Thus, pulse pneumatic is flowed into the first noise elimination cavity 2 from first through hole 11.
Wherein, the inwall of the outer wall of the body in the first noise elimination cavity 2 of air inlet pipe 1 and the first noise elimination cavity 2 it
Between formed with gap.That is, the caliber of air inlet pipe 1 is less than the cross-sectional area of the first noise elimination cavity 2.It should be noted that
Cross section refers to the parallel plane of the radial direction of air inlet pipe 1.
Second noise elimination cavity 3 is located on the first noise elimination cavity 2, and one end of escape pipe 5 extend into by second port 27
In one noise elimination cavity 2, the other end of escape pipe 5 passes through the second noise elimination cavity 3, the pipe positioned at the second noise elimination cavity 3 of escape pipe 5
Body is provided with multiple second through holes 51.
Wherein, the inwall of the outer wall of the body in the first noise elimination cavity 2 of escape pipe 5 and the first noise elimination cavity 2 it
Between formed with gap.That is, the cross-sectional area of escape pipe 5 is less than the cross-sectional area of the first noise elimination cavity 2.Need what is illustrated
It is that cross section refers to the parallel plane of the radial direction of escape pipe 1.
Escape pipe 5 can generally include three parts, and its front section is in the first noise elimination cavity 2, and stage casing part is
In two noise elimination cavitys 3 and hindfoot portion is outside the second noise elimination cavity 3, and multiple second through holes 51 are located at the stage casing part of escape pipe 5,
And multiple second through holes 51 communicate with the second noise elimination cavity 3.
In the chamber that the inwall of outer wall and the second noise elimination cavity 3 that sound-absorbing material 4 is filled in escape pipe 5 limits.Wherein, inhale
Sound material 4 refers to absorbing the material of high frequency noise, and the species of sound-absorbing material 4 is not particularly restricted, and can be glass
Filament, mild steel silk screen, felt etc..
Following process mainly occurs in silencer 100 for pulse pneumatic, and the pulse pneumatic first in pipeline enters air inlet
In pipe 1, the pulse pneumatic in air inlet pipe 1 is injected in the first noise elimination cavity 2 by multiple first through hole 11, now due to aperture
Air-flow impulse action is eliminated the noise and eliminates with strong, it is larger that air-flow enters a space suddenly after being come out by first through hole 11
The first noise elimination cavity 2 in, due to the abrupt change of cross-section, acoustic characteristic, the speed of air-flow drastically decline, noise and pressure pulse
To effective decay, simultaneously because the pulse pneumatic in air inlet pipe 1 is to be injected to first by the formation spray column of first through hole 11 to disappear
In operatic tunes body 2, spray column noise is continuous broad-band noise, and its frequency noise is inversely proportional with aperture, so as to by low frequency in pipeline
Pulsations change into high frequency noise.
The pulse pneumatic for being then passed through first time noise reduction is entered in escape pipe 5, when pulse pneumatic is by escape pipe 5,
Sound-absorbing material 4 can be by the high frequency noise of the Absorbing Fluctuation air-flow of multiple second through holes 51 on escape pipe 5, so as to pulse pneumatic
It has passed through noise reduction twice.
It can be drawn from above-mentioned analysis, the structure of silencer 100 for air conditioner according to embodiments of the present invention can be with
Sketch as the composite construction of the material of two pipes, two chamber one, the flow path in silencer 100 of the pulse pneumatic in pipeline is as follows：It is smaller
First noise elimination cavity 2 of 1 → comparatively large cross-sectional area of air inlet pipe of caliber → compared with the escape pipe 5 of pipe with small pipe diameter, and in air inlet pipe 1 and go out
The through hole less than itself caliber is designed with tracheae 5, the device of silencer 100, which has, repeatedly occurs cross section expansion, contraction structure,
Produce acoustic impedance mismatch, so as to be advantageous to noise sound wave caused by pulse pneumatic the interface that acoustic impedance be mutated occur reflect,
Phenomena such as interference, the sound wave of middle low frequency are cancelled out each other to reach the purpose of noise elimination.In addition, sound-absorbing material 4 can pass through escape pipe 5
The second through hole 51 absorb escape pipe 5 in high frequency noise, so as to further improve silencer 100 sound deadening capacity.
Because the above-mentioned silencer 100 for air conditioner is resistant, resistive mixed structure, low frequency in can not only eliminating
Noise, the noise of high frequency can also be eliminated.Therefore, the silencer 100 for air conditioner according to embodiments of the present invention has
Wider noise elimination frequency band and higher sound deadening capacity, it can effectively eliminate the noise in air conditioner discharge duct.
Advantageously, the summation of the via area of multiple first through hole 11 is 1.5-2 times of cross-sectional area of air inlet pipe 1.Tool
For body, the pulse pneumatic in air inlet pipe 1 is separated into multiply tributary by multiple first through hole 11 and sprayed in the first noise elimination cavity 2,
When pulse pneumatic passes through first through hole 11, cross section sudden contraction forms spray column, and spray column air-flow is flowed into the first noise elimination cavity
When 2, expansion, the acoustic impedance of sound wave are mutated also with the mutation of flow cross-sectional suddenly again for cross section, and sound wave is mutated in acoustic resistance
Interface phenomena such as reflection, interference will occur, so as to effectively eliminate the noise of low frequency in part caused by pulse pneumatic.This
When due to multiple first through hole 11 via area summation be more than air inlet pipe 1 cross section area, the flow velocity of pulse pneumatic
It will slow down, the noise of air current flow also decreases, and so as to reduce the pressure loss, increases the sound deadening capacity of silencer 100.
According to some specific embodiments of the present invention, the aperture of first through hole 11 can be the 1/5 of the aperture of air inlet pipe 1, this
Field those of ordinary skill is it is understood that the frequency of noise and the size in aperture are inversely proportional, when pulse pneumatic flows through at a high speed
During the smaller first through hole 11 of caliber, high frequency noise that low frequency noise that part is not eliminated changes into after first through hole 11
Frequency it is higher, will be effectively absorbed by the sound-absorbing material 4 in the second noise elimination cavity, it is right so as to can further improve silencer 100
The noise eradicating efficacy of different frequency.
Further, the length of the part in the first noise elimination cavity 2 of air inlet pipe 1 accounts for the total length of air inlet pipe 1
At least half.Thus, it is possible to further improve the sound deadening capacity of silencer 100.Wherein, it is worth understanding, air inlet pipe 1
The length for being inserted into the first noise elimination cavity 2 can be depending on actual perforate length and the number of openings.
Further, the aperture of the second through hole 51 is less than or equal to the 1/8 of the caliber of escape pipe 5.So as to further will
The noise of low and medium frequency changes into the noise of upper frequency, is advantageous to absorption of the sound-absorbing material 4 to noise, so as to improve silencer
100 sound deadening capacity.Simultaneously because the one end of the second noise elimination cavity 3 is connected on the rear end outer wall of the first noise elimination cavity 2, the other end connects
It is connected on escape pipe 5, so chamber of the second noise elimination cavity 3 equivalent to a closing, if the second through hole 51 on escape pipe 5
Aperture it is too big, then fraction will be flowed into the second noise elimination cavity 3, cause refrigerant to be detained, and influence the refrigeration of air-conditioning
Effect, therefore pass through 1/8 of the aperture of the second through hole 51 less than or equal to the caliber of escape pipe 5, it is ensured that the refrigeration of air-conditioning
Effect.Wherein, one end of the second noise elimination cavity 3 refers to the front end of the second noise elimination cavity 3, the other end of the second noise elimination cavity 3
Refer to the rear end of the second noise elimination cavity 3.
It is understood that the second enough through hole 51 is distributed with escape pipe 5, sound-absorbing material 4 just can be effectively
The high frequency noise of Absorbing Fluctuation air-flow, so as to which in further embodiment of the present invention, the percent opening of escape pipe 5 is more than 15%, enters
And improve the sound-damping qualities of silencer 100.
According to one embodiment of present invention, the first noise elimination cavity 2 and the second noise elimination cavity 3 can be respectively revolving body,
And first noise elimination cavity 2 and the second cavity be coaxially disposed.So as to be easy to the dress of the first noise elimination cavity 2 and the second noise elimination cavity 3
Match somebody with somebody, and material can be saved.Wherein, the diameter of revolving body is not particularly restricted, can be depending on sound deadening capacity and installation dimension.
In addition, the first noise elimination cavity 2 and the second noise elimination cavity 3 can be Split type structures, connected by modes such as welding, buckles, also may be used
To be integrally formed structure, it is possible thereby to reduce installation procedure, sealing effectiveness is improved.
As shown in figure 3, according to one embodiment of present invention, the first noise elimination cavity 2 includes：Preceding linkage section 21, wide diameter portion
22, middle linkage section 23, receive footpath portion 24, rear linkage section 25.
Specifically, before first port 26 is located on linkage section 21, it may also be said to, before air inlet pipe 1 is located on linkage section 21,
Wide diameter portion 22 is connected with the rear end of preceding linkage section 21, is provided with expanding chamber in wide diameter portion 22, the cross-sectional area of expanding chamber arrives in the past
Gradually increase on direction afterwards.The front end of middle linkage section 23 is connected with the rear end of wide diameter portion 22, and middle linkage section 23 has circle
The connecting cavity of cylindricality.Receive footpath portion 24 with the rear end of middle linkage section 23 to be connected, receive to be provided with footpath portion 24 and receive footpath chamber, receive the horizontal stroke of footpath chamber
Sectional area is gradually reduced on vertical direction.Linkage section 25 is connected with receiving the rear end in footpath portion 24 afterwards, and second port 27 is set
In the rear on linkage section 25, it may also be said to, escape pipe 5 is located on rear linkage section 25.That is, first port 26, expanding
Chamber, connecting cavity, receipts footpath chamber connect with second port 27, alternatively, preceding linkage section 21, wide diameter portion 22, middle linkage section 23, receipts footpath
Portion 24 and rear linkage section 25 are formed in one part, so that the first noise elimination cavity 2 is simple in construction.
Because the acoustic attenuation performance of reactive muffler 100 is mainly the same as the divergence ratio and the first noise elimination cavity 2 of the first noise elimination cavity 2
Length it is relevant, length determines frequency of noise elimination characteristic, the divergence ratio of the first noise elimination cavity 2 be among connecting cavity cross-sectional area with
The ratio of the cross-sectional area of air inlet pipe 1 determines sound deadening capacity.Therefore, the horizontal stroke of connecting cavity among being set according to required sound deadening capacity
The area ratio of sectional area and the cross-sectional area of first port 26.In some embodiments of the invention, the horizontal stroke of middle connecting cavity
The area ratio of sectional area and the cross-sectional area of first port 26 is 4-16.It is low so as to can further improve the centering of silencer 100
The eradicating efficacy of frequency noise.
It should be noted that above-mentioned cross section refers to air inlet pipe 1, the first noise elimination cavity 2 and the second noise elimination cavity 3
The parallel plane of radial direction.
Further, it is interference fit between first port 26 and air inlet pipe 1.Thus air inlet pipe 1 and first is improved to eliminate the noise
Bonding strength between cavity 2.Further, as shown in Figure 3 and Figure 4, the inwall of first port 26 is provided with the first positioning
Projection 261, the first positioning convex 261 is inwardly concaved by the part of preceding linkage section 21 and formed.Thus, it is possible to efficiently control into
Tracheae 1 is inserted into the length of the first noise elimination chamber.
In addition, it is interference fit between second port 27 and escape pipe 5.Thus the noise elimination cavity 2 of escape pipe 5 and first is improved
Between bonding strength.The inwall of second port 27 is provided with the second positioning convex（It is not shown）, the second positioning convex is by rear
The part of linkage section inwardly concaves and formed.It is possible thereby to efficiently control the length that escape pipe 5 extend into the first noise elimination cavity 2
Degree.
In some embodiments of the invention, as shown in figure 5, the second noise elimination cavity 3 includes：Body 31, the and of reducing diameter part 32
Connecting portion 33, the front side of body 31 are opened wide, and the cavity of cylinder is provided with body 31, and body 31, which is fixed on, to be received in footpath portion 24.Contracting
Footpath portion 32 is connected with the rear end of body 31, is provided with undergauge chamber in reducing diameter part 32, the cross-sectional area of undergauge chamber is in vertical side
It is gradually reduced upwards.Connecting portion 33 is connected with the rear end of reducing diameter part 32, and connecting portion 33 is provided with the 3rd end coordinated with escape pipe 5
Mouth 34.So that the second noise elimination cavity 3 is simple in construction.In the example of fig. 1, the external diameter of body 31, which is equal to, receives the outer of footpath portion 24
Footpath, so as to improve the presentation quality of silencer 100.
The air-conditioning of embodiment according to a second aspect of the present invention（It is not shown）Including blast pipe（It is not shown）With it is above-mentioned
Silencer 100 for air conditioner.Because the silencer 100 for air conditioner has wider noise elimination frequency band and higher noise elimination
The characteristics of amount, therefore air-conditioning according to embodiments of the present invention also has higher noise elimination frequency band and sound deadening capacity.
In the description of embodiments of the invention：" fore-and-aft direction " needs what is illustrated as shown in Fig. 1 into Fig. 6
It is that the instruction of the direction is the protection domain being not intended to be limiting of the invention for exemplary purposes.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example describe
Structure, material or feature are contained at least one embodiment or example of the present invention.In this manual, to above-mentioned term
Schematic representation is not necessarily referring to identical embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can combine in an appropriate manner in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (16)
- A kind of 1. silencer for air conditioner, it is characterised in that including：First noise elimination cavity, the opposing sidewalls of the first noise elimination cavity are provided with first port and second port；Air inlet pipe, the air inlet pipe are inserted into the first noise elimination cavity body by the first port, and the air inlet pipe is half Enclosed construction, the body in the first noise elimination cavity body of the air inlet pipe are laid with multiple first through hole；Second noise elimination cavity, the second noise elimination cavity are located on the first noise elimination cavity；Escape pipe, one end of the escape pipe are extend into the first noise elimination cavity body by the second port, the outlet The other end of pipe passes through the second noise elimination cavity, and the body positioned at the second noise elimination cavity of the escape pipe is provided with more Individual second through hole；Sound-absorbing material, the inwall of outer wall and the second noise elimination cavity that the sound-absorbing material is filled in the escape pipe limit Chamber in.
- 2. the silencer according to claim 1 for air conditioner, it is characterised in that the air inlet pipe positioned at described the Formed with gap between the inwall of the outer wall of body in one noise elimination cavity body and the first noise elimination cavity.
- 3. the silencer according to claim 1 for air conditioner, it is characterised in that the escape pipe positioned at described the Formed with gap between the inwall of the outer wall of body in one noise elimination cavity body and the first noise elimination cavity.
- 4. the silencer according to claim 1 for air conditioner, it is characterised in that the through hole of the multiple first through hole The summation of area is 1.5-2 times of the cross-sectional area of the air inlet pipe.
- 5. the silencer according to claim 4 for air conditioner, it is characterised in that the air inlet pipe positioned at described the The length of part in one noise elimination cavity body accounts at least half of the total length of the air inlet pipe.
- 6. the silencer according to claim 1 for air conditioner, it is characterised in that the aperture of second through hole is less than Equal to the 1/8 of the caliber of the escape pipe.
- 7. the silencer according to claim 1 for air conditioner, it is characterised in that the percent opening of the escape pipe is more than 15%.
- 8. the silencer according to claim 1 for air conditioner, it is characterised in that the first noise elimination cavity and described Second noise elimination cavity is respectively revolving body, and the first noise elimination cavity and the second noise elimination cavity are coaxially disposed.
- 9. the silencer according to claim 8 for air conditioner, it is characterised in that the first noise elimination cavity includes：Preceding linkage section, the first port are located on the preceding linkage section；Wide diameter portion, the wide diameter portion are connected with the rear end of the preceding linkage section, and expanding chamber is provided with the wide diameter portion, described expanding The cross-sectional area of chamber gradually increases on vertical direction；Middle linkage section, the front end of the middle linkage section are connected with the rear end of the wide diameter portion, and the middle linkage section has The connecting cavity of cylinder；The rear end of receipts footpath portion, the receipts footpath portion and the middle linkage section is connected, and is provided with the receipts footpath portion and receives footpath chamber, the receipts The cross-sectional area of footpath chamber is gradually reduced on vertical direction；Linkage section afterwards, the rear linkage section are connected with the rear end in the receipts footpath portion, and the second port sets linkage section in the rear On.
- 10. the silencer according to claim 9 for air conditioner, it is characterised in that the middle connecting cavity it is transversal The area ratio of area and the cross-sectional area of the first port is 4-16.
- 11. the silencer according to claim 9 for air conditioner, it is characterised in that the first port with it is described enter It is interference fit between tracheae.
- 12. the silencer according to claim 11 for air conditioner, it is characterised in that on the inwall of the first port Provided with the first positioning convex, first positioning convex is inwardly concaved by the part of the preceding linkage section and formed.
- 13. the silencer according to claim 9 for air conditioner, it is characterised in that the second port with it is described go out It is interference fit between tracheae.
- 14. the silencer according to claim 13 for air conditioner, it is characterised in that on the inwall of the second port Provided with the second positioning convex, second positioning convex is inwardly concaved by the part of the rear linkage section and formed.
- 15. the silencer according to claim 9 for air conditioner, it is characterised in that the second noise elimination cavity includes：Body, the front side of the body are opened wide, and the cavity of cylinder is provided with the body, and the body is fixed on the receipts footpath In portion；Reducing diameter part, the reducing diameter part are connected with the rear end of the body, and undergauge chamber is provided with the reducing diameter part, the undergauge chamber Cross-sectional area is gradually reduced on vertical direction；Connecting portion, the connecting portion are connected with the rear end of the reducing diameter part, and the connecting portion is provided with to be coordinated with the escape pipe The 3rd port.
- A kind of 16. air conditioner, it is characterised in that including：Blast pipe；Silencer, the silencer are connected with the blast pipe, and the silencer is according to any one of claim 1-15 institute The silencer for air conditioner stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310377446.1A CN104422109B (en) | 2013-08-26 | 2013-08-26 | For air-conditioning silencer and there is its air-conditioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310377446.1A CN104422109B (en) | 2013-08-26 | 2013-08-26 | For air-conditioning silencer and there is its air-conditioning |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104422109A CN104422109A (en) | 2015-03-18 |
| CN104422109B true CN104422109B (en) | 2018-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310377446.1A Active CN104422109B (en) | 2013-08-26 | 2013-08-26 | For air-conditioning silencer and there is its air-conditioning |
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| Country | Link |
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| CN (1) | CN104422109B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3992541A4 (en) * | 2019-07-23 | 2022-08-24 | GD Midea Air-Conditioning Equipment Co., Ltd. | Air conditioner indoor unit |
| KR20230085441A (en) * | 2021-12-07 | 2023-06-14 | 위아비 주식회사 | Air conditioning system with silencer module |
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| CN110762000A (en) * | 2018-07-26 | 2020-02-07 | 广东美的环境科技有限公司 | Enthalpy-increasing pulsation attenuation device, scroll compressor and air conditioning system |
| CN109210754A (en) * | 2018-10-18 | 2019-01-15 | 广东美的制冷设备有限公司 | silencer for air conditioner and air conditioner |
| CN109210755A (en) * | 2018-10-18 | 2019-01-15 | 广东美的制冷设备有限公司 | silencer for air conditioner and air conditioner |
| CN109373400B (en) * | 2018-11-27 | 2020-08-14 | 佛山市云米电器科技有限公司 | Method for acquiring noise interference device of range hood |
| CN110864180A (en) * | 2019-11-07 | 2020-03-06 | 哈尔滨工程大学 | High-efficient compact sea water pipeline silencer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203550164U (en) * | 2013-08-26 | 2014-04-16 | 广东美的暖通设备有限公司 | Silencer for air conditioner and air conditioner with silencer |
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| CN2194452Y (en) * | 1994-05-10 | 1995-04-12 | 田鹤年 | Anti-injection-resistance sound-damper |
| CN2274257Y (en) * | 1996-06-28 | 1998-02-11 | 罗佳生 | Silencer |
| CN201582959U (en) * | 2009-12-23 | 2010-09-15 | 中国舰船研究设计中心 | Ventilating muffler |
| CN201724362U (en) * | 2010-06-30 | 2011-01-26 | 广东美的电器股份有限公司 | Inverter air conditioner silencer |
| CN102721164A (en) * | 2012-05-04 | 2012-10-10 | 美的集团有限公司 | Control device for reducing noise of indoor cabinet of air conditioner |
| CN202927355U (en) * | 2012-10-30 | 2013-05-08 | 重庆美的通用制冷设备有限公司 | Air cooled heat pump and silencer of the same |
| CN202993509U (en) * | 2012-11-22 | 2013-06-12 | 广东美的电器股份有限公司 | Air conditioner and silencer |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203550164U (en) * | 2013-08-26 | 2014-04-16 | 广东美的暖通设备有限公司 | Silencer for air conditioner and air conditioner with silencer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3992541A4 (en) * | 2019-07-23 | 2022-08-24 | GD Midea Air-Conditioning Equipment Co., Ltd. | Air conditioner indoor unit |
| KR20230085441A (en) * | 2021-12-07 | 2023-06-14 | 위아비 주식회사 | Air conditioning system with silencer module |
| KR102601645B1 (en) * | 2021-12-07 | 2023-11-14 | 위아비 주식회사 | Air conditioning system with silencer module |
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| Publication number | Publication date |
|---|---|
| CN104422109A (en) | 2015-03-18 |
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