CN102927675B - Exhaust muffling device for air-conditioner and noise reduction method - Google Patents
Exhaust muffling device for air-conditioner and noise reduction method Download PDFInfo
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- CN102927675B CN102927675B CN201210445850.3A CN201210445850A CN102927675B CN 102927675 B CN102927675 B CN 102927675B CN 201210445850 A CN201210445850 A CN 201210445850A CN 102927675 B CN102927675 B CN 102927675B
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Abstract
The invention discloses a kind of exhaust muffling device for air-conditioner and noise reduction method.Described exhaust muffling device for air-conditioner comprises muffler cavity, the first pipe arrangement and the second pipe arrangement.Muffler cavity two ends arrange the first access tube and the second access tube respectively.One end of first pipe arrangement is communicated with compressor exhaust pipe, and the other end is inserted into muffler cavity from the first access tube, and the splicing position between the first pipe arrangement and the first access tube seals; One end of second pipe arrangement is inserted into muffler cavity from the second access tube, and the other end and compressor air-discharging circulatory system pipeline connection, the splicing position between the second pipe arrangement and the second access tube seals.Muffler assembly in the present invention can carry out noise reduction according to special frequency channel, and has the advantage that volume is little, production cost is low.
Description
Technical field
The present invention relates to air-conditioner exhaust noise silencing parts, be specially a kind of exhaust muffling device for air-conditioner and noise reduction method.
Background technology
Air-conditioner in the design process, due to tank material, two device areas, compressor capacity, kind and characteristic, PIPING DESIGN, system debug coupling etc. problem, excessive or the pipeline vibration of gas exhaust piping airflow noise may be caused, indoor set can be delivered to by tube connector time serious, produce abnormal sound, affect user's comfortableness.When this occurs, the most frequently used means increase muffler on gas exhaust piping.If abnormal serious airflow noise appears in gas exhaust piping, then the muffler that employing two silencers are connected or volume is larger carries out the elimination of noise.Because solder joint increases during two silencer series connection, the hidden danger causing flow leakage because of failure welding can be increased.Notification number be CN201589393U patent discloses a kind of exhaust muffling device for air-conditioner, it comprises the first compressor exhaust pipe, muffler, the second compressor exhaust pipe, and the first compressor exhaust pipe and the second compressor exhaust pipe are arranged on the two ends of muffler respectively by welding procedure.Wherein the middle part of muffler is variable diameter design, and the diameter in the middle part of muffler is 0.25 ~ 0.4 times of two ends barrel diameter.Exhaust muffling device for air-conditioner as above, although avoid two muffler series connection, saves material and space, the variable diameter design in the middle part of muffler, due to complex structure, not easily processes and the control of product specification characteristic difficulty.And namely above-mentioned two kinds of silencing means allow to eliminate the noise in discharge duct largely, but still can not eliminate for the noise of some CF.Above-mentioned two kinds of mufflers are comparatively large due to volume simultaneously, all cannot install in less casing.
As from the foregoing, be necessary to provide a kind of and can eliminate CF and the not high exhaust muffling device for air-conditioner of small volume, production cost.
Summary of the invention
Goal of the invention of the present invention there are provided a kind ofly can eliminate CF and the noise reduction method of the not high exhaust muffling device for air-conditioner of small volume, production cost and this device.
According to an aspect of the present invention, provide a kind of exhaust muffling device for air-conditioner, a kind of exhaust muffling device for air-conditioner, comprising: muffler cavity, the first pipe arrangement and the second pipe arrangement;
Wherein, described muffler cavity two ends arrange the first access tube and the second access tube respectively;
One end of first pipe arrangement is communicated with the air inlet of compressor exhaust pipe, and the other end is inserted into described muffler cavity from the first access tube, and the splicing position between the first pipe arrangement and the first access tube seals;
One end of second pipe arrangement is inserted into described muffler cavity from the second access tube, the other end and compressor air-discharging circulatory system pipeline connection, and the splicing position between the second pipe arrangement and the second access tube seals;
Special frequency channel in the sound wave that vibration of compressor produces by described muffler cavity is eliminated.
Wherein, described muffler cavity specifically comprises:
For the silencing cavity abated the noise, and be arranged at import flaring chamber and the outlet convergent chamber at described silencing cavity two ends respectively;
The heavy caliber end in described import flaring chamber is connected with described silencing cavity, and its small-caliber end is fixedly connected with the first access tube;
The heavy caliber end in described outlet convergent chamber is connected with described silencing cavity, and its small-caliber end is fixedly connected with the second access tube.
As preferably, the length that the first pipe arrangement and the second pipe arrangement are inserted into described silencing cavity is adjustable.
Further, the first pipe arrangement inserts the length of described silencing cavity be the length that the 1/2, second pipe arrangement of described silencing cavity length inserts described silencing cavity is 1/4 of described silencing cavity length.
As preferably, the first access tube and described import flaring chamber one-body molded, the second access tube and described outlet convergent chamber one-body molded.
Wherein, the flaring form in described import flaring chamber is straight line flaring or curve flaring;
The tapered fashion in described outlet convergent chamber is straight line convergent or curve convergent.
As preferably, the splicing position of the first pipe arrangement and the first access tube passes through Welding;
The splicing position of the second pipe arrangement and the second access tube passes through Welding.
One end of first pipe arrangement and the air inlet of compressor exhaust pipe pass through Welding;
The other end and the compressor air-discharging circulatory system pipeline of the second pipe arrangement pass through Welding.
Preferably, the first pipe arrangement and the second pipe arrangement are equipped with witness marker, for marking the length of the first pipe arrangement and the second pipe arrangement insertion silencing cavity.
Preferably, the body that the second pipe arrangement inserts muffler cavity inside is provided with spill port, and described spill port is through hole, for being drained in compressor air-discharging circulatory system pipeline by the trapped fuel of muffler cavity inside.
Preferably, the material of described muffler cavity is iron, and the material of the first pipe arrangement and the second pipe arrangement is red copper.
According to another aspect of the present invention, provide a kind of noise reduction method of exhaust muffling device for air-conditioner, described exhaust muffling device comprises muffler cavity, the first pipe arrangement and the second pipe arrangement, and described muffler cavity two ends are arranged and the first access tube and the second access tube respectively; One end of first pipe arrangement is connected with the air inlet of compressor exhaust pipe, and the other end is inserted in described muffler cavity by the first access tube; One end of second pipe arrangement is inserted in described muffler cavity by the second access tube, and the other end is connected with the gas outlet of compressor exhaust pipe;
Described method comprises:
The sound wave utilizing the first pipe arrangement be communicated with the air inlet of described compressor exhaust pipe to be produced by vibration of compressor is input in described muffler cavity;
Described muffler cavity is utilized to be eliminated by the sound wave of special frequency channel.
Wherein, described muffler cavity specifically comprises:
Silencing cavity, and the import flaring chamber and the outlet convergent chamber that are arranged at described silencing cavity two ends respectively; The heavy caliber end in described import flaring chamber is connected with described silencing cavity, and its small-caliber end is fixedly connected with the first access tube; The heavy caliber end in described outlet convergent chamber is connected with described silencing cavity, and its small-caliber end is fixedly connected with the second access tube;
Described special frequency channel is determined by the ratio of the internal diameter of silencing cavity and the internal diameter of the first pipe arrangement.
Preferably, the length that described special frequency channel also inserts described silencing cavity by the first pipe arrangement and the second pipe arrangement determines.
The maximum noise reduction frequency of described special frequency channel specifically determines according to following formula:
Wherein, f
nfor the maximum noise reduction frequency of described special frequency channel, c is sound velocity of wave propagation, and l is the length of described silencing cavity, n be greater than 0 integer.
By the length regulating the first pipe arrangement and the second pipe arrangement to insert described silencing cavity, the periodicity leaked through in described silencing cavity is leaked through sound wave filtering, and described periodicity leaks through sound wave frequency and determines according to following formula: f
n=nc/2l;
Wherein, f
nfor periodically leaking through sound wave frequency, c is sound velocity of wave propagation, and l is the length of described silencing cavity, n be greater than 0 integer.
Wherein, the length that the first pipe arrangement inserts described silencing cavity is 1/2 of described silencer length, in order to described periodicity to be leaked through the odd number partial filtration in sound wave;
The length that second pipe arrangement inserts described silencing cavity is 1/4 of described silencer length, in order to described periodicity to be leaked through the even segments filtering in sound wave.
As shown from the above technical solution, muffler assembly in the present invention can realize carrying out noise reduction according to special frequency channel by regulating the length of silencing cavity, inserts the length of silencing cavity by the periodic vibration sound wave filtering in vibration of compressor sound wave by adjustment first pipe arrangement and the second pipe arrangement simultaneously.Because muffler cavity in the present invention only needs a cavity just can realize good erasure effect, therefore there is the advantage that volume is little, production cost is low.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below.Apparently, the accompanying drawing in below describing is only some embodiments of the present invention, for those of ordinary skills, can also obtain other embodiment and accompanying drawing thereof according to these accompanying drawing illustrated embodiments.
Fig. 1 shows the structural representation of exhaust muffling device for air-conditioner in the present invention;
Fig. 2 shows the structural representation of muffler cavity in the present invention;
Fig. 3 shows the structural representation that the first pipe arrangement inserts silencing cavity;
Fig. 4 shows the structural representation that the first pipe arrangement inserts silencing cavity;
Fig. 5 shows the structural representation that the first pipe arrangement and the second pipe arrangement all insert silencing cavity.
Detailed description of the invention
For making object of the present invention, technical scheme and advantage clearly understand, to develop simultaneously embodiment referring to accompanying drawing, the present invention is described in more detail.
Fig. 1 shows the structure principle chart of exhaust muffling device for air-conditioner in the present invention.As shown in Figure 1, exhaust muffling device for air-conditioner comprises muffler cavity 1, first pipe arrangement 2 and the second pipe arrangement 3.
Fig. 2 shows the structural representation of muffler cavity 1.As shown in Figure 2, the two ends of muffler cavity 1 are respectively equipped with the first access tube 101 and the second access tube 102.Muffler cavity 1 comprise the silencing cavity 105 that can effectively abate the noise be arranged at described silencing cavity 105 two ends for being connected the import flaring chamber 103 of the first access tube 101 and the outlet convergent chamber 104 for being connected the second access tube 102.First access tube 101 is fixedly connected with import flaring chamber 103; Second access tube 102 is fixedly connected with outlet convergent chamber 104.Preferably, in the embodiment in the present invention, the first access tube 101 is one-body molded with import flaring chamber 103; Second access tube 102 is one-body molded with outlet convergent chamber 104.
Wherein, the flaring form in import flaring chamber 103 is straight line flaring or curve flaring.The tapered fashion in outlet convergent chamber 104 is straight line convergent or curve convergent.The flaring form in import flaring chamber 103 and the tapered fashion in outlet convergent chamber 104 are determined according to Production requirement or other particular requirements by technical staff, and usually, import flaring chamber 103 is in a symmetrical arrangement in silencing cavity 105 both sides with outlet convergent chamber 104.In the embodiment of the present invention, the flaring form in import flaring chamber 103 is straight line flaring, the tapered fashion in outlet convergent chamber 104 is that straight line convergent just illustrates, but import flaring chamber 103 is not limited to straight line flaring, outlet convergent chamber 104 is not limited to the form of straight line convergent.
First pipe arrangement 2 is the siphunculus of hollow.One end of first pipe arrangement is connected with the air inlet of compressor exhaust pipe, and the other end is inserted in muffler cavity 1 by the first access port 101.Wherein,
First pipe arrangement 2 is specially with the connected mode of the air inlet of compressor exhaust pipe: the air inlet of compressor exhaust pipe is inserted in the first pipe arrangement 2, and the inner surface of the air inlet of the compressor exhaust pipe outer surface and the first pipe arrangement 2 that insert the part of the first pipe arrangement 2 passes through Welding.
The connected mode of the first pipe arrangement 2 and the first access tube 101 is specially: the splicing position between the first pipe arrangement 2 and the first access tube 101 passes through sealed with brazing.Wherein, the splicing position between the first pipe arrangement 2 and the first access tube 101 is the gap that the first pipe arrangement 2 runs through between the outer surface of the part of the first access tube 101 and the inner surface of the first access tube.
Second pipe arrangement 3 is the siphunculus of hollow.One end of second pipe arrangement is inserted in muffler cavity 1 by the second access port 102, the other end and compressor air-discharging circulatory system pipeline connection.Wherein,
Second pipe arrangement 3 is welded with exhaust circulating system pipeline by welding procedure.Preferably, the second pipe arrangement 3 is welded with compressor air-discharging circulatory system pipeline by soldering.
Second pipe arrangement 3 is specially with the connected mode of compressor air-discharging circulatory system pipeline: a part for compressor air-discharging circulatory system pipeline is inserted in the second pipe arrangement 3, and the inner surface of the compressor air-discharging circulatory system pipeline outer surface and the first pipe arrangement 2 that insert that part of the second pipe arrangement 2 passes through Welding.
The connected mode of the second pipe arrangement 3 and the second access tube 102 is specially: the splicing position between the second pipe arrangement 3 and the second access tube 102 passes through sealed with brazing.Wherein, the splicing position between the second pipe arrangement 3 and the second access tube 102 is the gap that the second pipe arrangement 3 runs through between the outer surface of the part of the second access tube 102 and the inner surface of the second access tube 102.
First pipe arrangement 2 inserts the adjustable in length that the length of the silencing cavity 105 of muffler cavity 1 and the second pipe arrangement 3 insert the silencing cavity 105 of muffler cavity 1.Further, first pipe arrangement 2 inserts the length of the silencing cavity 105 of muffler cavity 1 and the second pipe arrangement 3, and to insert the length of the silencing cavity 105 of muffler cavity 1 proportional, particularly, the first pipe arrangement 2 inserts the length ratio that the length of silencing cavity 105 and the second pipe arrangement 3 insert silencing cavity 105 is 2:1.By inserting in the silencing cavity of muffler cavity 1 by the first pipe arrangement 2 and the second pipe arrangement 3, the muffler assembly in the present invention can be enable to carry out noise reduction according to special frequency channel.Insert by adjustment first pipe arrangement 2 length ratio that the length of silencing cavity 105 and the second pipe arrangement 3 insert silencing cavity 105 simultaneously, by periodically be eliminated by frequency, good erasure effect can be reached
Preferably, the first pipe arrangement 2 and the second pipe arrangement 3 are equipped with witness marker 4, insert length in silencing cavity 105 in order to accurately to control the first pipe arrangement 2 and the second pipe arrangement 3, as shown in Figure 1.Wherein, witness marker 4 can be graduation mark, round dot or asterisk.The shape of the witness marker 4 lifted in the present embodiment is exemplary, and every pattern that can play mark action all falls into scope of invention.
Further, the second pipe arrangement 3 is provided with spill port 5 inserting that muffler cavity 1 is inner, on the body that is positioned at outlet convergent chamber 104, and this spill port 5 is through hole.Because silencing means is vertically arranged in discharge duct.First pipe arrangement 2 is arranged at the top of silencing means, and the second pipe arrangement 3 is arranged at the bottom of silencing means.The exhaust of compressor enters into muffler cavity 1 through the first pipe arrangement 2, the oil of trace can be mingled with in gas due to compressor discharge when being vented, silencing means in use between longer after, just there will be trapped fuel bottom muffler cavity 1, affect the erasure effect of silencing means.Therefore the body inserting muffler cavity 1 at the second pipe arrangement 3 arranges spill port 5, the trapped fuel bottom muffler cavity 1 can be got back in the compressor air-discharging circulatory system to greatest extent and go, make the erasure effect that silencing means remains good.
Further, spill port 5 and witness marker 4 are arranged at the same side of the second pipe arrangement 3, and the center of the center of spill port 5 and witness marker 4 on the same line.By the center of the center of spill port 5 and witness marker 4 on the same line, like this when welding second pipe arrangement 3 and the second access tube 102, at witness marker 4, solder is laid in right amount by place, and during to avoid welding, solder too much flows down blocking spill port along the second pipe arrangement 3.
By inserting in the silencing cavity of muffler cavity 1 by the first pipe arrangement 2 and the second pipe arrangement 3, the muffler assembly in the present invention can be enable to carry out noise reduction according to special frequency channel.Arrange the first pipe arrangement 2 to insert the length ratio that the length of silencing cavity 105 and the second pipe arrangement 3 insert silencing cavity 105 be 2:1 simultaneously, and the periodicity in the sound wave that vibration of compressor can be produced is eliminated by frequency, reaches good erasure effect.In the present invention, in the sound wave that special frequency channel produces for vibration of compressor, those skilled in the art person wants the frequency range corresponding to noise of filtering.
Below the principle that the silencing means in the present invention can carry out noise reduction for special frequency channel is described in detail.
In the present invention, the sectional area of the silencing cavity 105 of muffler cavity 1 is S
1, the sectional area of the first pipe arrangement 2 is S
2, in muffler cavity 1, the length of silencing cavity 105 is l.Then in the present invention, the divergence ratio m of silencing means is:
M=S
1/ S
2(formula 1)
The computing formula of the sound-damping qualities of silencing means is:
Wherein,
K is wave number:
(formula 3)
λ is the wavelength of sound wave in silencing means under gas temperature: λ=c/f.(formula 4)
C is the velocity of sound (speed that sound wave is propagated in the refrigerant freezed for air-conditioner);
F is sound wave frequency.
As can be seen from formula 2, work as sin
2during kl=1, sound-damping qualities has maximum.Now
Can be obtained by formula 3 and 4:
Thus maximum noise reduction frequency can be obtained:
n=0,1,2,3 ... (formula 5)
From formula 5, if the length l of silencing cavity 105 increases in muffler cavity 1, then the maximum frequency of noise elimination f of silencing means
nthen move to low frequency.Because the common noise of air-conditioner often concentrates in lower frequency bands, the length l therefore will the frequency of the noise eliminated substitution formula 5 being needed just can to calculate silencing cavity 105 in muffler cavity 1.Utilize the silencing means calculating silencing cavity 105 length just can carry out noise reduction for CF.
Although but to specific frequency, there is good acoustic attenuation performance above by the silencing means calculating silencing cavity 105 length and to carry out CF noise reduction, can exist periodically by the problem of frequency, specifically be drawn by formula 2:
When kl=n π (n=0,1,2 ...) time, Δ Lw=0, namely silencing means is f for frequency
n=nc/2l
1(n=0,1,2 ...) sound wave do not eliminate the noise, thus cause these frequencies to be f
n=nc/2l
1sound wave just directly spread out of without reduction.
Therefore, the frequency that muffler leaks through is and periodically leaks through sound wave, and periodically leaking through sound wave frequency is f
n=nc/2l.Leak through periodically leak through this shortcoming of sound wave to overcome muffler, in the present invention, adopt the method by the first pipe arrangement 2 and the second pipe arrangement 3 insert in muffler cavity 1 to solve.
Fig. 3 shows the interior structural representation inserting the first pipe arrangement 2 of silencing cavity 105 of muffler cavity 1, and wherein, in muffler cavity 1, the length of silencing cavity 105 is l
1, the length of the first pipe arrangement 2 is l
2.After inserting the first pipe arrangement 2, the sound-damping qualities of silencing means is:
(formula 6)
Wherein,
(formula 7)
(formula 8)
In formula, P
enter-silencer incident sound pressure;
P
thoroughly-silencer transmission acoustic pressure;
M-divergence ratio.
From formula 7,8, as the length l of the first pipe arrangement 2
2for l
1/ 2, kl
1=(2n+1) π, (n=0,1,2 ...) time, now Δ Lw ≠ 0.Due to Δ Lw ≠ 0, then illustrate that this silencing means is f for frequency
n=nc/2l
1(n be greater than 0 odd number) sound wave can play abatement effect.Therefore in muffler cavity 1, insert the first pipe arrangement, can frequency be eliminated
(n be greater than 0 integer) in the odd number part of n.
Fig. 4 shows the interior structural representation inserting the first pipe arrangement 2 of silencing cavity 105 of muffler cavity 1, and wherein, in muffler cavity 1, the length of silencing cavity 105 is l
1, the length of the first pipe arrangement 2 is l
3.Insert the sound-damping qualities of the rear silencing means of the second pipe arrangement 3 with formula 6,7,8.Repeat no more herein.From from formula 7,8 formula, when the length of the second pipe arrangement 3 is l
1/ 4, kl
1=2n π (n=0,1,2 ...) time, now Δ Lw ≠ 0.Due to Δ Lw ≠ 0, illustrate that this silencing means is f for frequency
n=nc/2l
1(n be greater than 0 even number) sound wave can play abatement effect.Therefore, in muffler cavity 1, insert the second pipe arrangement, can eliminate and pass through frequency
(n be greater than 0 integer) in the even segments of n.
Thus, in the present invention silencing means muffler cavity 1 in insert the first pipe arrangement 2 and the second pipe arrangement 3, and the first pipe arrangement 2 and the second pipe arrangement 3 length inserted in silencing cavity 105 are respectively 1/2 and 1/4 of the length of silencing cavity 105, as shown in Figure 5.Therefore the silencing means in the present invention not only can by the sound wave filtering of CF, also eliminate periodically leaking through frequency by the first pipe arrangement 2 and the second pipe arrangement 3, thus enable the silencing means in the present invention carry out noise reduction for CF and have good erasure effect.
In the present invention, the length of the first pipe arrangement 2 and the second pipe arrangement 3 can be the same or different.The length of the first pipe arrangement 2 and the second pipe arrangement 3 is determined according to Production requirement or design by the staff of the art.In embodiments of the present invention, the first pipe arrangement 2 is different with the length of the second pipe arrangement 3.
In embodiments of the invention, in silencing means, the material of muffler cavity 1 is iron, and the material of the first pipe arrangement 2 and the second pipe arrangement 3 is red copper, can reduce the manufacturing cost of silencing means so to greatest extent, is conducive to batch production.
The foregoing is only preferred embodiment of the present invention, not for limiting the scope of the invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. an exhaust muffling device for air-conditioner, comprising: muffler cavity, the first pipe arrangement and the second pipe arrangement;
Wherein, described muffler cavity two ends arrange the first access tube and the second access tube respectively;
One end of first pipe arrangement is communicated with the air inlet of compressor exhaust pipe, and the other end is inserted into described muffler cavity from the first access tube, and the splicing position between the first pipe arrangement and the first access tube seals;
One end of second pipe arrangement is inserted into described muffler cavity from the second access tube, the other end and compressor air-discharging circulatory system pipeline connection, and the splicing position between the second pipe arrangement and the second access tube seals;
First pipe arrangement and the second pipe arrangement are equipped with witness marker, for marking the length of the first pipe arrangement and the second pipe arrangement insertion silencing cavity;
Special frequency channel in the sound wave that vibration of compressor produces by described muffler cavity is eliminated;
The body that second pipe arrangement inserts muffler cavity inside is provided with spill port;
Described spill port on second pipe arrangement and witness marker are arranged at the same side of the second pipe arrangement, and the center of the center of described spill port on the second pipe arrangement and witness marker on the same line.
2. exhaust muffling device for air-conditioner as claimed in claim 1, it is characterized in that, described muffler cavity specifically comprises:
For the silencing cavity abated the noise, and be arranged at import flaring chamber and the outlet convergent chamber at described silencing cavity two ends respectively;
The heavy caliber end in described import flaring chamber is connected with described silencing cavity, and its small-caliber end is fixedly connected with the first access tube;
The heavy caliber end in described outlet convergent chamber is connected with described silencing cavity, and its small-caliber end is fixedly connected with the second access tube.
3. exhaust muffling device for air-conditioner as claimed in claim 2, it is characterized in that, the length that the first pipe arrangement and the second pipe arrangement are inserted into described silencing cavity is adjustable.
4. exhaust muffling device for air-conditioner as claimed in claim 3, is characterized in that, the length that the first pipe arrangement inserts described silencing cavity is the length that the 1/2, second pipe arrangement of described silencing cavity length inserts described silencing cavity is 1/4 of described silencing cavity length.
5. exhaust muffling device for air-conditioner as claimed in claim 2, is characterized in that, the first access tube and described import flaring chamber one-body molded, the second access tube and described outlet convergent chamber one-body molded.
6. exhaust muffling device for air-conditioner as claimed in claim 2, is characterized in that,
The flaring form in described import flaring chamber is straight line flaring or curve flaring;
The tapered fashion in described outlet convergent chamber is straight line convergent or curve convergent.
7. exhaust muffling device for air-conditioner as claimed in claim 1, is characterized in that,
The splicing position of the first pipe arrangement and the first access tube passes through Welding;
The splicing position of the second pipe arrangement and the second access tube passes through Welding;
One end and the compressor exhaust pipe of the first pipe arrangement pass through Welding;
The other end and the compressor air-discharging circulatory system pipeline of the second pipe arrangement pass through Welding.
8. exhaust muffling device for air-conditioner as claimed in claim 1, it is characterized in that, described spill port is through hole, for being drained in compressor air-discharging circulatory system pipeline by the trapped fuel of muffler cavity inside.
9. exhaust muffling device for air-conditioner as claimed in claim 1, it is characterized in that, the material of described muffler cavity is iron, and the material of the first pipe arrangement and the second pipe arrangement is red copper.
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| CN201210445850.3A CN102927675B (en) | 2012-11-08 | 2012-11-08 | Exhaust muffling device for air-conditioner and noise reduction method |
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| CN201210445850.3A CN102927675B (en) | 2012-11-08 | 2012-11-08 | Exhaust muffling device for air-conditioner and noise reduction method |
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| CN102927675B true CN102927675B (en) | 2015-11-18 |
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| CN107490171A (en) * | 2017-08-01 | 2017-12-19 | 广东美的制冷设备有限公司 | Muffler and there is its air conditioner |
| CN110686398B (en) * | 2019-09-25 | 2020-11-24 | 珠海格力电器股份有限公司 | Silencer with adjustable length and system pressure capable of being automatically adapted and air conditioner |
| CN111472958B (en) * | 2020-03-16 | 2021-09-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Silencer structure, compressor and refrigerator with same |
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| KR100734487B1 (en) * | 2005-12-30 | 2007-07-03 | 위니아만도 주식회사 | Noise redution structure of multi air conditioner |
| CN201259300Y (en) * | 2008-07-30 | 2009-06-17 | 广东美的电器股份有限公司 | Oil return insertion tube type noise deadener |
| CN201724362U (en) * | 2010-06-30 | 2011-01-26 | 广东美的电器股份有限公司 | Inverter air conditioner silencer |
| CN202470364U (en) * | 2012-02-22 | 2012-10-03 | 珠海格力电器股份有限公司 | Muffler and air conditioner including same |
| CN202902574U (en) * | 2012-11-08 | 2013-04-24 | 青岛海信日立空调系统有限公司 | Air conditioner exhaust silencing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488013A (en) * | 2018-05-11 | 2018-09-04 | 杭叉集团股份有限公司 | A kind of fork truck intake muffler |
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| CN102927675A (en) | 2013-02-13 |
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