CN104422109A - Silencer for air conditioner and air conditioner with same - Google Patents
Silencer for air conditioner and air conditioner with same Download PDFInfo
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- CN104422109A CN104422109A CN201310377446.1A CN201310377446A CN104422109A CN 104422109 A CN104422109 A CN 104422109A CN 201310377446 A CN201310377446 A CN 201310377446A CN 104422109 A CN104422109 A CN 104422109A
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- Prior art keywords
- noise elimination
- air
- elimination cavity
- silencer
- port
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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
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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
- 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 silencer for an air conditioner and the air conditioner with the same. The silencer comprises a first silencing cavity, an air inlet pipe, a second silencing cavity, an air outlet pipe and sound absorption materials, wherein opposite side walls of the first silencing cavity are provided with a first port and a second port, the air inlet pipe is inserted into the first silencing cavity through the first port and is of a semi-closed structure, the second silencing cavity is arranged on the first silencing cavity, one end of the air outlet pipe extends into the first silencing cavity through the second port while the other end of the air outlet pipe penetrates through the second silencing cavity, the pipe body of the air outlet pipe located on the second silencing cavity is provided with a plurality of second through holes, and a cavity defined by the outer wall of the air outlet pipe and the inner wall of the second silencing cavity is filled with the sound absorption materials. The silencer for the air conditioner is an impedance compound silencer, and has the advantages of being wider in silencing frequency band and higher in silencing amount.
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 to eliminate the pneumatic noise that in compressor operating process, in pipeline, pulse pneumatic flowing produces.The silencer that current air-conditioning is conventional is generally reactive muffler, it is the sound reflecting effect utilizing device acoustical behavior sudden change place in pipeline, by unexpected expansion, the contraction generation acoustic impedance mismatch of pipeline section, the phenomenons such as the interface that the sound wave of some frequency is suddenlyd change in acoustic impedance is reflected, interference, sound wave cancels out each other the object reaching noise elimination.
The silencer that current air-conditioning is conventional is single-unit expansion muffler, due to cost and performance requirement, can not very long by single-unit expanding design of muffler, and therefore the silencer of the type exists and much passes through frequency.In operation of air conditioner process, the noise that pulse pneumatic flowing produces mostly is the noise of medium-high frequency, and this silencer is unsatisfactory to reduction pulse pneumatic hydrodynamic noise, and therefore single reactive muffler effect can not practical requirement completely.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.
For this reason, one object of the present invention is to propose a kind of silencer for air-conditioner with wider noise elimination frequency band and higher sound deadening capacity.
Another object of the present invention is to propose a kind of air-conditioner with above-mentioned silencer.
The silencer for air-conditioner of embodiment comprises according to a first aspect of the present invention: the first noise elimination cavity, and the opposing sidewalls of described first noise elimination cavity is provided with the first port and the second port; Air inlet pipe, described air inlet pipe is inserted in described first noise elimination cavity by described first port, and described air inlet pipe is semi-closed structure, and the body being positioned at described first noise elimination cavity of described air inlet pipe is laid with multiple first through hole; Second noise elimination cavity, described second noise elimination cavity is located on described first noise elimination cavity; Escape pipe, one end of described escape pipe extend in described first noise elimination cavity by described second port, the other end of described escape pipe is through described second noise elimination cavity, and the body being positioned at described second noise elimination cavity of described escape pipe is provided with multiple second through hole; Sound-absorbing material, in the chamber that the inwall of outer wall and described second noise elimination cavity that described sound-absorbing material is filled in described escape pipe limits.
Can sketch according to the acoustic wave filter structure for air-conditioner of the embodiment of the present invention is the composite construction of two pipe two chamber one materials, pulse pneumatic in pipeline flow path in silencer is as follows: compared with the first noise elimination cavity → compared with the escape pipe of pipe with small pipe diameter of the air inlet pipe → larger cross section of pipe with small pipe diameter, and in air inlet pipe and escape pipe, be all provided with the through hole being less than self caliber, muffler has repeatedly generation cross section expansion, contraction structure, produce acoustic impedance mismatch, thus the interface that the noise sound wave being conducive to pulse pneumatic generation suddenlys change in acoustic impedance is reflected, the phenomenons such as interference, the sound wave of medium and low frequency cancels out each other the object reaching noise elimination.In addition, sound-absorbing material can absorb the high frequency noise in escape pipe by the second through hole of escape pipe, thus improves the sound deadening capacity of silencer further.
Because the above-mentioned silencer for air-conditioner has resistance, resistive mixed structure, not only can eliminate the noise of medium and low frequency, also can eliminate the noise of high frequency.Therefore, according to the silencer for air-conditioner of the embodiment of the present invention, there is wider noise elimination frequency band and higher sound deadening capacity, effectively can eliminate the noise in air conditioner duct.
In addition, according to the silencer for air-conditioner of the embodiment of the present invention, also there is following additional technical feature:
According to one embodiment of present invention, gap is formed with between the outer wall of the body in described first noise elimination cavity of described air inlet pipe and the inwall of described first noise elimination cavity.
According to one embodiment of present invention, gap is formed with between the outer wall of the body in described first noise elimination cavity of described escape pipe and the inwall of described first noise elimination cavity.
According to an embodiment of the invention for the silencer of air-conditioner, the summation of the via area of described multiple first through hole is 1.5-2 times of the cross-sectional area of described air inlet pipe.Thus the flow velocity of pulse pneumatic can be reduced, the noise of air current flow also decreases, and then reduces the pressure loss, increases the sound deadening capacity of silencer.
According to an embodiment of the invention for the silencer of air-conditioner, the length being positioned at the part of described first noise elimination cavity of described air inlet pipe accounts for 1/2 of the total length of described air inlet pipe.Thus, the sound deadening capacity of silencer can be improved further.
According to an embodiment of the invention for the silencer of air-conditioner, the aperture of described second through hole is less than or equal to 1/8 of the caliber of described escape pipe.Thus further the noise of low and medium frequency can be changed into the noise of upper frequency, be conducive to the absorption of sound-absorbing material to noise, thus improve the sound deadening capacity of silencer.In addition, cold-producing medium can also be reduced and be trapped in the second noise elimination cavity, ensure the refrigeration of air-conditioning.
According to an embodiment of the invention for the silencer of air-conditioner, the percent opening of described escape pipe is greater than 15%.Thus, the sound-damping qualities of silencer is improved further.
According to an embodiment of the invention for the silencer of air-conditioner, described first noise elimination cavity and described second noise elimination cavity are respectively revolving body, and described first noise elimination cavity and described second cavity are coaxially arranged.Thus be convenient to the assembling of the first noise elimination cavity and the second noise elimination cavity, and material can be saved.
According to an embodiment of the invention for the silencer of air-conditioner, described first noise elimination cavity comprises: front linkage section, and described first port is located on described front linkage section; Wide diameter portion, described wide diameter portion is connected with the rear end of described front linkage section, is provided with expanding chamber in described wide diameter portion, and the cross-sectional area in described expanding chamber increases gradually on vertical direction; Linkage section, the front end of described linkage section is connected with the rear end of described wide diameter portion, and described linkage section has columniform connection chamber; Receive footpath portion, described receipts footpath portion is connected with the rear end of described linkage section, and be provided with in the portion of described receipts footpath and receive chamber, footpath, the cross-sectional area in chamber, described receipts footpath reduces gradually on vertical direction; Rear linkage section, described rear linkage section is connected with the rear end in described receipts footpath portion, and described second port is established in the rear on linkage section.
According to an embodiment of the invention for the silencer of air-conditioner, the area ratio of the cross-sectional area of described connection chamber and the cross-sectional area of described first port is 4-16.Improve the eradicating efficacy of silencer centering low frequency noise thus further.
According to an embodiment of the invention for the silencer of air-conditioner, be interference fit between described first port and described air inlet pipe.Improve the bonding strength between air inlet pipe and the first noise elimination cavity thus further.
According to an embodiment of the invention for the silencer of air-conditioner, the inwall of described first port is provided with the first positioning convex, and described first positioning convex is inwardly concaved by the part of described front linkage section and formed.Thus, the length that air inlet pipe is inserted into the first noise elimination chamber can effectively be controlled.
According to an embodiment of the invention for the silencer of air-conditioner, be interference fit between described second port and described escape pipe.Thus, the bonding strength between escape pipe and the first noise elimination cavity is improved.
According to an embodiment of the invention for the silencer of air-conditioner, the inwall of described second port is provided with the second positioning convex, and described second positioning convex is inwardly concaved by the part of described rear linkage section and formed.Thus, the length that escape pipe stretches into the first noise elimination cavity is effectively controlled.
According to an embodiment of the invention for the silencer of air-conditioner, described second noise elimination cavity comprises: body, and the front side of described body is opened wide, and be provided with columniform cavity in described body, described body is fixed in the portion of described receipts footpath; Reducing diameter part, described reducing diameter part is connected with the rear end of described body, is provided with undergauge chamber in described reducing diameter part, and the cross-sectional area in described undergauge chamber reduces gradually on vertical direction; Connecting portion, described connecting portion is connected with the rear end of described reducing diameter part, and described connecting portion is provided with the 3rd port coordinated with described escape pipe.
The air-conditioning of embodiment comprises the above-mentioned silencer for air-conditioner and comprises blast pipe and the above-mentioned silencer for air-conditioning according to a second aspect of the present invention, owing to there is wider noise elimination frequency band and higher sound deadening capacity for the silencer of air-conditioner, therefore according to the air-conditioning of the embodiment of the present invention, also there is higher noise elimination frequency band and sound deadening capacity.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is according to an embodiment of the invention for the structural representation of the silencer of air-conditioner;
Fig. 2 is according to an embodiment of the invention for the structural representation of the air inlet pipe of the silencer of air-conditioner;
Fig. 3 is according to an embodiment of the invention for the structural representation of the first noise elimination cavity of the silencer of air-conditioner;
Fig. 4 is the enlarged diagram of a-quadrant in Fig. 3;
Fig. 5 is according to an embodiment of the invention for the structural representation of the second noise elimination cavity of the silencer of air-conditioner;
Fig. 6 is according to an embodiment of the invention for the structural representation of the escape pipe of the silencer of air-conditioner.
Reference numeral:
Silencer 100; Air inlet pipe 1; First through hole 11;
First noise elimination cavity 2; Front linkage section 21; Wide diameter portion 22; Middle linkage section 23; Receive footpath portion 24; Rear linkage section 25; First 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.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear" etc. instruction orientation or position relationship be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply indication device or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
In addition, in describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
Below with reference to Fig. 1 to Fig. 6, the silencer 100 for air-conditioner of embodiment is according to a first aspect of the present invention described, this silencer 100 is located in the pipeline of blast pipe (not shown) of air-conditioner, and silencer 100 is for eliminating the pneumatic noise that in compressor operating process, in pipeline, pulse pneumatic flowing produces.Wherein, blast pipe is a part for air-conditioning duct, for being connected with evaporimeter (not shown).
As shown in Figure 1, comprise according to the silencer 100 for air-conditioner of the embodiment of the present invention: the first noise elimination cavity 2, air inlet pipe 1, 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 is provided with the first port 26 and the second port 27, that is, first noise elimination cavity 2 is the cavity body structure of both ends open, air inlet pipe 1 is inserted in the first noise elimination cavity 2 from the first port 26, namely one end of air inlet pipe 1 is outside the first noise elimination cavity 2, the other end of air inlet pipe 1 is in the first noise elimination cavity 2, one end be positioned at outside the first noise elimination cavity 2 of air inlet pipe 1 is suitable for being connected with blast pipe, and namely the pulse pneumatic of blast pipe is by flowing into after air inlet pipe 1 in first noise elimination cavity 2.Wherein, in the example of Fig. 1 and Fig. 3, one end of air inlet pipe 1 refers to the front end of air inlet pipe 1, the other end of air inlet pipe 1 refers to the rear end of air inlet pipe 1, first port 26 of the first noise elimination cavity 2 refers to the front port of the first noise elimination cavity 2, and 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 the end inserted in the first noise elimination cavity 2 is in closed state, and the body portion being positioned at the first noise elimination cavity 2 of air inlet pipe 1 is laid with multiple first through hole 11.Thus, pulse pneumatic flow in the first noise elimination cavity 2 from the first through hole 11.
Wherein, gap is formed with between the outer wall of the body in the first noise elimination cavity 2 of air inlet pipe 1 and the inwall of the first noise elimination cavity 2.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, one end of escape pipe 5 extend in the first noise elimination cavity 2 by the second port 27, the other end of escape pipe 5 is through the second noise elimination cavity 3, and the body being positioned at the second noise elimination cavity 3 of escape pipe 5 is provided with multiple second through hole 51.
Wherein, gap is formed with between the outer wall of the body in the first noise elimination cavity 2 of escape pipe 5 and the inwall of the first noise elimination cavity 2.That is, the cross-sectional area of escape pipe 5 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 escape pipe 1.
Escape pipe 5 can comprise three parts substantially, its front section is in the first noise elimination cavity 2, stage casing part in the second noise elimination cavity 3 and hindfoot portion outside the second noise elimination cavity 3, multiple second through holes 51 are located at the stage casing part of escape pipe 5, and multiple second through hole 51 communicates with the second noise elimination cavity 3.
Sound-absorbing material 4 is filled in the chamber of the outer wall of escape pipe 5 and the inwall restriction of the second noise elimination cavity 3.Wherein, sound-absorbing material 4 refers to can the material of absorbing high-frequency noise, and the kind of sound-absorbing material 4 is also not particularly limited, and can be glass fiber, mild steel silk screen, felt etc.
Pulse pneumatic is main in silencer 100 there is following process, first the pulse pneumatic in pipeline enters in air inlet pipe 1, pulse pneumatic in air inlet pipe 1 is injected in the first noise elimination cavity 2 by multiple first through hole 11, now because aperture has strong noise elimination and the impulse action of elimination air-flow, air-flow by the first through hole 11 out after enter into suddenly in the first larger noise elimination cavity 2 of space, due to the abrupt change of cross-section, the acoustic characteristic of air-flow, speed sharply declines, effectively being decayed of noise and pressure pulse, simultaneously because the pulse pneumatic in air inlet pipe 1 forms spray column by the first through hole 11 to be injected in the first noise elimination cavity 2, spray column noise is continuous print broad-band noise, its frequency noise and aperture are inversely proportional to, thus low frequency pulsating noise in pipeline is changed into high frequency noise.
Then the pulse pneumatic through first time noise reduction enters in escape pipe 5, when pulse pneumatic is by escape pipe 5, sound-absorbing material 4 by the high frequency noise of the multiple second through hole 51 Absorbing Fluctuation air-flows on escape pipe 5, thus can have passed through twice noise reduction to pulse pneumatic.
Can draw from above-mentioned analysis, can sketch according to silencer 100 structure for air-conditioner of the embodiment of the present invention is the composite construction of two pipe two chamber one materials, pulse pneumatic in pipeline flow path in silencer 100 is as follows: compared with the first noise elimination cavity 2 → compared with the escape pipe 5 of pipe with small pipe diameter of the air inlet pipe 1 → comparatively large cross-sectional area of pipe with small pipe diameter, and the through hole being less than self caliber is all provided with in air inlet pipe 1 and escape pipe 5, silencer 100 device has repeatedly generation cross section expansion, contraction structure, produce acoustic impedance mismatch, thus the interface that the noise sound wave being conducive to pulse pneumatic generation suddenlys change in acoustic impedance is reflected, the phenomenons such as interference, the sound wave of medium and low frequency cancels out each other the object reaching noise elimination.In addition, sound-absorbing material 4 can absorb the high frequency noise in escape pipe 5 by the second through hole 51 of escape pipe 5, thus improves the sound deadening capacity of silencer 100 further.
Because the above-mentioned silencer 100 for air-conditioner has resistance, resistive mixed structure, not only can eliminate the noise of medium and low frequency, also can eliminate the noise of high frequency.Therefore, the silencer 100 for air-conditioner according to the embodiment of the present invention has wider noise elimination frequency band and higher sound deadening capacity, effectively can 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 the cross-sectional area of air inlet pipe 1.Specifically, pulse pneumatic in air inlet pipe 1 is separated into multiply tributary by multiple first through hole 11 and sprays in the first noise elimination cavity 2, when pulse pneumatic is through the first through hole 11, cross section sudden contraction, form spray column, when spray column air-flow flow into the first noise elimination cavity 2, cross section is expanded suddenly again, the acoustic impedance of sound wave is also suddenlyd change along with the sudden change of flow cross-sectional, sound wave in the interface that acoustic resistance is suddenlyd change by reflecting, the phenomenon such as interference, thus effectively eliminate the noise of the part medium and low frequency that pulse pneumatic produces.Now because the summation of the via area of multiple first through hole 11 is greater than the area of the cross section of air inlet pipe 1, the flow velocity of pulse pneumatic will slow down, and the noise of air current flow also decreases, thus can reduce the pressure loss, increases the sound deadening capacity of silencer 100.
According to specific embodiments more of the present invention, the aperture of the first through hole 11 can be 1/5 of air inlet pipe 1 aperture, what one of ordinary skill in the art will appreciate that is, the frequency of noise and the size in aperture are inversely proportional to, when pulse pneumatic flows through at a high speed less the first through hole 11 of caliber, the frequency of the high frequency noise that the low frequency noise that part is not eliminated changes into after the first through hole 11 is higher, effectively absorb by the sound-absorbing material 4 in the second noise elimination cavity, thus can further improve the noise eradicating efficacy of silencer 100 pairs of different frequencies.
Further, the length being positioned at the part of the first noise elimination cavity 2 of air inlet pipe 1 accounts for 1/2 of the total length of air inlet pipe 1.Thus, the sound deadening capacity of silencer 100 can be improved further.Wherein, be worth understanding, the length being inserted into the first noise elimination cavity 2 of air inlet pipe 1 can be determined according to actual perforate length and the number of openings.
Further, the aperture of the second through hole 51 is less than or equal to 1/8 of the caliber of escape pipe 5.Thus further the noise of low and medium frequency can be changed into the noise of upper frequency, be conducive to the absorption of sound-absorbing material 4 pairs of noises, thus improve the sound deadening capacity of silencer 100.Simultaneously because second noise elimination cavity 3 one end is connected on the rear end outer wall of the first noise elimination cavity 2, the other end is connected on escape pipe 5, so the second noise elimination cavity 3 is equivalent to a closed chamber, if the aperture of the second through hole 51 on escape pipe 5 is too large, then fraction will flow in the second noise elimination cavity 3, cold-producing medium is caused to be detained, affect the refrigeration of air-conditioning, therefore by making the aperture of the second through hole 51 be less than or equal to 1/8 of the caliber of escape pipe 5, the refrigeration of air-conditioning can be ensured.Wherein, one end of the second noise elimination cavity 3 refers to the front end of the second noise elimination cavity 3, and the other end of the second noise elimination cavity 3 refers to the rear end of the second noise elimination cavity 3.
Be understandable that, escape pipe 5 is distributed with the second abundant through hole 51, sound-absorbing material 4 just can the high frequency noise of Absorbing Fluctuation air-flow effectively, thus in further embodiment of the present invention, the percent opening of escape pipe 5 is greater than 15%, and then improves 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 the first noise elimination cavity 2 and the second cavity are coaxially arranged.Thus the assembling of the first noise elimination cavity 2 and the second noise elimination cavity 3 can be convenient to, and material can be saved.Wherein, the diameter of revolving body is also not particularly limited, and can determine according to 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, also can be integrally formed structure, can reduce installation procedure thus by modes such as welding, buckles, improve sealing effectiveness.
As shown in Figure 3, according to one embodiment of present invention, the first noise elimination cavity 2 comprises: front linkage section 21, wide diameter portion 22, middle linkage section 23, receives footpath portion 24, rear linkage section 25.
Specifically, the first port 26 is located on front linkage section 21, alternatively, air inlet pipe 1 is located on front linkage section 21, wide diameter portion 22 is connected with the rear end of front linkage section 21, is provided with expanding chamber in wide diameter portion 22, and the cross-sectional area in expanding chamber increases gradually on vertical direction.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 columniform connection chamber.Receive footpath portion 24 to be connected with the rear end of middle linkage section 23, receive in footpath portion 24 to be provided with and receive chamber, footpath, the cross-sectional area receiving chamber, footpath reduces gradually on vertical direction.Rear linkage section 25 with receive the rear end in footpath portion 24 and be connected, the second port 27 is established in the rear on linkage section 25, and alternatively, escape pipe 5 is located on rear linkage section 25.That is, first port 26, expanding chamber, connection chamber, chamber, receipts footpath are communicated with the second port 27, alternatively, front linkage section 21, wide diameter portion 22, middle linkage section 23, receive footpath portion 24 and rear linkage section 25 and to be formed in one part, thus make the first noise elimination cavity 2 structure simple.
The main divergence ratio with the first noise elimination cavity 2 of acoustic attenuation performance due to reactive muffler 100 is relevant with the length of the first noise elimination cavity 2, length determines frequency of noise elimination characteristic, and the divergence ratio i.e. middle cross-sectional area of connection chamber and the ratio of air inlet pipe 1 cross-sectional area of the first noise elimination cavity 2 determines sound deadening capacity.Therefore, can according to the area ratio of the cross-sectional area of connection chamber and the cross-sectional area of the first port 26 in the middle of the setting of required sound deadening capacity.In some embodiments of the invention, the area ratio of the cross-sectional area of middle connection chamber and the cross-sectional area of the first port 26 is 4-16.Thus can further improve the eradicating efficacy of silencer 100 centering low frequency noise.
It should be noted that, above-mentioned cross section refers to air inlet pipe 1, first noise elimination cavity 2 plane parallel with the radial direction of the second noise elimination cavity 3.
Further, be interference fit between the first port 26 and air inlet pipe 1.Improve the bonding strength between air inlet pipe 1 and the first noise elimination cavity 2 thus.Further, as shown in Figure 3 and Figure 4, the inwall of the first port 26 is provided with the first positioning convex 261, first positioning convex 261 and is inwardly concaved by the part of front linkage section 21 and formed.Thus, the length that air inlet pipe 1 is inserted into the first noise elimination chamber can effectively be controlled.
In addition, be interference fit between the second port 27 and escape pipe 5.Improve the bonding strength between escape pipe 5 and the first noise elimination cavity 2 thus.The inwall of the second port 27 is provided with the second positioning convex (scheming not shown), and the second positioning convex is inwardly concaved by the part of rear linkage section and formed.Effectively can control the length that escape pipe 5 extend into the first noise elimination cavity 2 thus.
In some embodiments of the invention, as shown in Figure 5, the second noise elimination cavity 3 comprises: body 31, reducing diameter part 32 and connecting portion 33, and the front side of body 31 is opened wide, and is provided with columniform cavity in body 31, and body 31 is fixed on to be received in footpath portion 24.Reducing diameter part 32 is connected with the rear end of body 31, is provided with undergauge chamber in reducing diameter part 32, and the cross-sectional area in undergauge chamber reduces gradually on vertical direction.Connecting portion 33 is connected with the rear end of reducing diameter part 32, and connecting portion 33 is provided with the 3rd port 34 coordinated with escape pipe 5.Thus make the second noise elimination cavity 3 structure simple.In the example of fig. 1, the external diameter of body 31 equals the external diameter receiving footpath portion 24, thus can improve the presentation quality of silencer 100.
The air-conditioning (scheming not shown) of embodiment comprises blast pipe (scheming not shown) and the above-mentioned silencer 100 for air-conditioner according to a second aspect of the present invention.Owing to there is wider noise elimination frequency band and higher sound deadening capacity for the silencer 100 of air-conditioner, therefore according to the air-conditioning of the embodiment of the present invention, also there is higher noise elimination frequency band and sound deadening capacity.
In the description of embodiments of the invention: " fore-and-aft direction " as shown in Fig. 1 to Fig. 6, but it should be noted that, the instruction in this direction just for exemplary purposes, instead of in order to limit the scope of the invention.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (16)
1. for a silencer for air-conditioner, it is characterized in that, comprising:
First noise elimination cavity, the opposing sidewalls of described first noise elimination cavity is provided with the first port and the second port;
Air inlet pipe, described air inlet pipe is inserted in described first noise elimination cavity by described first port, and described air inlet pipe is semi-closed structure, and the body being positioned at described first noise elimination cavity of described air inlet pipe is laid with multiple first through hole;
Second noise elimination cavity, described second noise elimination cavity is located on described first noise elimination cavity;
Escape pipe, one end of described escape pipe extend in described first noise elimination cavity by described second port, the other end of described escape pipe is through described second noise elimination cavity, and the body being positioned at described second noise elimination cavity of described escape pipe is provided with multiple second through hole;
Sound-absorbing material, in the chamber that the inwall of outer wall and described second noise elimination cavity that described sound-absorbing material is filled in described escape pipe limits.
2. the silencer for air-conditioner according to claim 1, is characterized in that, is formed with gap between the outer wall of the body in described first noise elimination cavity of described air inlet pipe and the inwall of described first noise elimination cavity.
3. the silencer for air-conditioner according to claim 1, is characterized in that, is formed with gap between the outer wall of the body in described first noise elimination cavity of described escape pipe and the inwall of described first noise elimination cavity.
4. the silencer for air-conditioner according to claim 1, is characterized in that, the summation of the via area of described multiple first through hole is 1.5-2 times of the cross-sectional area of described air inlet pipe.
5. the silencer for air-conditioner according to claim 4, is characterized in that, the length being positioned at the part of described first noise elimination cavity of described air inlet pipe accounts for 1/2 of the total length of described air inlet pipe.
6. the silencer for air-conditioner according to claim 1, is characterized in that, the aperture of described second through hole is less than or equal to 1/8 of the caliber of described escape pipe.
7. the silencer for air-conditioner according to claim 1, is characterized in that, the percent opening of described escape pipe is greater than 15%.
8. the silencer for air-conditioner according to claim 1, is characterized in that, described first noise elimination cavity and described second noise elimination cavity are respectively revolving body, and described first noise elimination cavity and described second cavity are coaxially arranged.
9. the silencer for air-conditioner according to claim 8, is characterized in that, described first noise elimination cavity comprises:
Front linkage section, described first port is located on described front linkage section;
Wide diameter portion, described wide diameter portion is connected with the rear end of described front linkage section, is provided with expanding chamber in described wide diameter portion, and the cross-sectional area in described expanding chamber increases gradually on vertical direction;
Middle linkage section, the front end of described middle linkage section is connected with the rear end of described wide diameter portion, and described middle linkage section has columniform connection chamber;
Receive footpath portion, described receipts footpath portion is connected with the rear end of described middle linkage section, and be provided with in the portion of described receipts footpath and receive chamber, footpath, the cross-sectional area in chamber, described receipts footpath reduces gradually on vertical direction;
Rear linkage section, described rear linkage section is connected with the rear end in described receipts footpath portion, and described second port is established in the rear on linkage section.
10. the silencer for air-conditioner according to claim 9, is characterized in that, the area ratio of the cross-sectional area of described middle connection chamber and the cross-sectional area of described first port is 4-16.
11. silencers for air-conditioner according to claim 9, is characterized in that, are interference fit between described first port and described air inlet pipe.
12. silencers for air-conditioner according to claim 11, it is characterized in that, the inwall of described first port is provided with the first positioning convex, described first positioning convex is inwardly concaved by the part of described front linkage section and is formed.
13. silencers for air-conditioner according to claim 9, is characterized in that, are interference fit between described second port and described escape pipe.
14. silencers for air-conditioner according to claim 13, it is characterized in that, the inwall of described second port is provided with the second positioning convex, described second positioning convex is inwardly concaved by the part of described rear linkage section and is formed.
15. silencers for air-conditioner according to claim 8, is characterized in that, described second noise elimination cavity comprises:
Body, the front side of described body is opened wide, and be provided with columniform cavity in described body, described body is fixed in the portion of described receipts footpath;
Reducing diameter part, described reducing diameter part is connected with the rear end of described body, is provided with undergauge chamber in described reducing diameter part, and the cross-sectional area in described undergauge chamber reduces gradually on vertical direction;
Connecting portion, described connecting portion is connected with the rear end of described reducing diameter part, and described connecting portion is provided with the 3rd port coordinated with described escape pipe.
16. 1 kinds of air-conditioners, is characterized in that, comprising:
Blast pipe;
Silencer, described silencer is connected with described blast pipe, and described silencer is the silencer for air-conditioner according to any one of claim 1-15.
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 true CN104422109A (en) | 2015-03-18 |
| CN104422109B 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104422109B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109373400A (en) * | 2018-11-27 | 2019-02-22 | 佛山市云米电器科技有限公司 | A kind of acquisition methods of noise of range hood interference device |
| 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 |
| CN110864180A (en) * | 2019-11-07 | 2020-03-06 | 哈尔滨工程大学 | High-efficient compact sea water pipeline silencer |
| WO2023106514A1 (en) * | 2021-12-07 | 2023-06-15 | 위아비 주식회사 | Air conditioning apparatus having noise module attached thereto |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210688490U (en) * | 2019-07-23 | 2020-06-05 | 广东美的制冷设备有限公司 | Indoor unit of air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
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| 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 |
| CN109373400A (en) * | 2018-11-27 | 2019-02-22 | 佛山市云米电器科技有限公司 | A kind of acquisition methods of noise of range hood interference device |
| CN110864180A (en) * | 2019-11-07 | 2020-03-06 | 哈尔滨工程大学 | High-efficient compact sea water pipeline silencer |
| WO2023106514A1 (en) * | 2021-12-07 | 2023-06-15 | 위아비 주식회사 | Air conditioning apparatus having noise module attached thereto |
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| Publication number | Publication date |
|---|---|
| CN104422109B (en) | 2018-02-06 |
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