CN2926903Y - Pulsation silencer for air conditioner - Google Patents
Pulsation silencer for air conditioner Download PDFInfo
- Publication number
- CN2926903Y CN2926903Y CNU2006200620306U CN200620062030U CN2926903Y CN 2926903 Y CN2926903 Y CN 2926903Y CN U2006200620306 U CNU2006200620306 U CN U2006200620306U CN 200620062030 U CN200620062030 U CN 200620062030U CN 2926903 Y CN2926903 Y CN 2926903Y
- Authority
- CN
- China
- Prior art keywords
- silencer
- outer tube
- pipe
- muffler
- idle call
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000003584 silencer Effects 0.000 title claims abstract description 75
- 230000010349 pulsation Effects 0.000 title abstract description 4
- 230000008030 elimination Effects 0.000 claims abstract description 27
- 238000003379 elimination reaction Methods 0.000 claims abstract description 27
- 230000008676 import Effects 0.000 claims description 12
- 230000030279 gene silencing Effects 0.000 abstract 2
- 238000004378 air conditioning Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000005243 fluidization Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
The utility model discloses a pulsation silencer for air conditioner, which comprises an outer silencer pipe, wherein the space enclosed by the outer silencer pipe is a silencing cavity; the silencer outer pipe is provided with an outer pipe inlet and an outer pipe outlet; the silencer inner pipe is arranged in the silencing cavity, the front end of the silencer inner pipe is communicated with the inlet of the outer pipe, and the pipe wall of the silencer inner pipe is provided with a through hole. The utility model discloses can be applicable to the pneumatic noise elimination of pulsation of broadband, stability is high, just the utility model discloses a size is little.
Description
Technical field
The utility model relates to noise elimination shock absorber field, relates in particular to a kind of idle call pulse muffler.
Background technology
The idle call silencer is in order to solve air-conditioning noise of being produced in the process of operation, and the silencer of existing idle call is generally reactive muffler, and it is to utilize the pipeline section sudden change, causes the mismatch of acoustic impedance that the acoustic propagation energy is reduced; Next is to utilize the certain-length cavity, allows sound wave come back reflective, and acoustic energy is changed into mechanical energy and thermal dissipation, thereby reaches the noise reduction purpose.The type silencer can only play the noise elimination effect to certain component frequency composition, and when noise peak wavelength during much larger than cavity length, silencer is with ineffective.Thereby to improve the silencer performance, generally adopt two kinds of methods:
(1) inner connecting tube is inserted in the expansion chambers muffler inlet, inserts 1/4 (expansion chambers length is 1/4 noise peak wavelength) that length is got expansion chambers length.The characteristics of the silencer of this structure are: noise elimination quality factor height, and frequency band is narrow, and volume is big, and the anterior pressure of silencer can become big simultaneously.Its noise-cancelling theory is that the noise peak energy is converted into mechanical energy, reaches the noise reduction purpose.
(2) with the expansion chambers series connection of more piece different length, their frequency of passing through is staggered, mutually to reach wide band noise reduction.Consider cost and installation question, should not on air-conditioning, use.
Summary of the invention
The purpose of this utility model is to provide a kind of silencer, and the volume of this silencer is little, noise reduction stable.
The utility model is achieved through the following technical solutions:
The idle call pulse muffler comprises the silencer outer tube, and the space that this silencer outer tube is surrounded is a noise elimination cavity; Have outer tube import, outer tube outlet on the silencer outer tube; Be provided with in the silencer in noise elimination cavity and manage, the pipe front end is connected with the outer tube import and communicates in the silencer, is provided with a plurality of through holes in silencer on the tube wall of pipe.
In the utility model, pulse pneumatic (noise) enters in the silencer from the import of silencer outer tube front end outer tube and manages, in through hole, spread out of, in noise elimination cavity, come back reflective, and insoluble low frequency pulsating air-flow (noise) is changed into the dither air-flow (noise) of easy solution, overcome the noise elimination effect unsettled defective of former silencer to the noise of different frequency.Promptly transform earlier the frequency of noise, eliminate the noise, what this was the utility model with existing structure is maximum different.Simultaneously, this structure can adopt undersized silencer, avoids the oversize difficult problem of bringing of silencer.
Further improvement of the utility model is:
The back-end closure of pipe in the described silencer.Control the discharge of pulse pneumatic pipe rear end in the silencer, can adopt multiple structure, as: reduce the diameter of silencer rear end, or the through hole of a minor diameter is set in the silencer rear end.And will manage back-end closure in the silencer, and can avoid the rear end of most of pulse pneumatic pipe in the silencer to flow out, also can process easily.
Described noise elimination cavity point diameter is big, dwindling gradually near the rear end diameter, as the shell shape.Powerful fluidization tower from through hole gushes out around the directive, is blended in the noise elimination cavity of shell shape then.The noise elimination cavity of shell shape can reduce eddy current and cavitation, simultaneously jet has been carried out High frequency filter again, and has reached final noise elimination purpose.
Described noise elimination cavity dwindles gradually near the rear end diameter and makes the rear end of silencer outer tube form the arc surface that concaves.After the fluidization tower that ejects from through hole mixes, flow out, fluid pulsation is reduced, thereby weaken pipeline vibration and noise, to improve the effect of noise reduction through the submissive transition of the arc surface of indent.
The dischargeable capacity of the noise elimination cavity that described silencer outer tube is surrounded is 30 to 45 cubic centimetres.The utility model is a purpose with the air-conditioning noise elimination, calculate through test of many times, the domestic air conditioning that refrigerating capacity 12000W is following, desirable noise elimination cavity dischargeable capacity is 32 to 42 cubic centimetres a scope, consider the interchangeability of actual processing, assembling, it is 30 to 45 cubic centimetres scope that the dischargeable capacity of silencer is limited to volume.
The gross area of described through hole is greater than the sectional area of pipe in the described silencer.This structure mainly is for to guarantee the mass flow in the pipe in the silencer.
Evenly disperse on the tube wall of described through hole pipe in described silencer to be provided with.To guarantee in silencer, managing the flow velocity of the pulse pneumatic that penetrates and the even unification that frequency is tried one's best.
Have at least a described through hole to be located at the close described outer tube of pipe import department in the described silencer.Can guarantee the oil return of silencer by this through hole.
Be provided with recess at described silencer outer tube near on the tube wall in outer tube exit,, guarantee to insert the technology length of pipe to locate.
To sum up, the utility model has the advantages that:
1, can eliminate the noise to the noise of broadband, stability is strong;
2, the silencer size is little, installation, convenient for production;
3, the noise elimination cavity structure of shell shape is eliminated the noise effective;
4, pipe is gone up the oil return that guarantees silencer near the through hole of outer tube import department in the silencer.
Description of drawings
Fig. 1 is a cutaway view of the present utility model;
Spectrogram when Fig. 2 is to use common silencer;
Spectrogram when Fig. 3 is to use the utility model.
Description of reference numerals:
1, silencer outer tube, 2, noise elimination cavity, 3, the outer tube import, 4, the outer tube outlet, 5, pipe in the silencer, 6, through hole, 7, recess.
The specific embodiment
See also Fig. 1, a kind of idle call pulse muffler comprises silencer outer tube 1, and the space that this silencer outer tube 1 is surrounded is a noise elimination cavity 2, and the dischargeable capacity of noise elimination cavity 2 is 36 cubic centimetres; These noise elimination cavity 2 point diameters are big, dwindling gradually near the rear end diameter, and making the rear end of silencer outer tube 1 form arc surface that concaves and the inverted shell shape of the whole little formation in the big rear end of silencer outer tube 1 front end; Have outer tube import 3, outer tube outlet 4 on the silencer outer tube 1; Be provided with in noise elimination cavity 2 and manage 5 in the silencer, pipe 5 front ends are connected with outer tube import 3 and communicate in the silencer.Homodispersely on pipe 5 the tube wall in silencer be provided with a plurality of through holes 6, and have at least a through hole 6 to be located in the silencer pipe 5 near on the tube walls at outer tube import 3 places, the back-end closure of pipe 5 in the silencer; The gross area of a plurality of through holes 6 is greater than the sectional area of pipe 5 in the silencer.Silencer outer tube 1 is provided with two recesses 7 near the tube wall of outer tube outlet.
Present embodiment is tested contrast (asking for an interview Fig. 2, Fig. 3) on same set of air-conditioning system, by above frequency spectrum contrast as can be seen: when using common silencer, noise peak is 50.4dB/2.00E-5Pa, and when using present embodiment, noise peak is 41.5dB/2.00E-5Pa.When promptly using present embodiment, low frequency pulsating air-flow (noise) can be eliminated the noise, also dither air-flow (noise) can be eliminated the noise simultaneously, improve the stability of eliminating the noise, it is effective to eliminate the noise.
Claims (9)
1, idle call pulse muffler comprises silencer outer tube (1), and the space that this silencer outer tube (1) is surrounded is noise elimination cavity (2); Have outer tube import (1), outer tube outlet (4) on the silencer outer tube (1); Be provided with in the silencer pipe (5) in noise elimination cavity (2), pipe (5) front end is connected with outer tube import (3) and communicates in the silencer, it is characterized in that: manage in silencer on the tube wall of (5) and be provided with a plurality of through holes (6).
2, idle call pulse muffler as claimed in claim 1 is characterized in that: the back-end closure of pipe (5) in the described silencer.
3, idle call pulse muffler as claimed in claim 2 is characterized in that: described noise elimination cavity (2) point diameter is big, is dwindling gradually near the rear end diameter.
4, idle call pulse muffler as claimed in claim 3 is characterized in that: described noise elimination cavity (2) dwindles gradually near the rear end diameter and makes the rear end of silencer outer tube (1) form the arc surface that concaves.
5, as each described idle call pulse muffler among the claim 1-4, it is characterized in that: the dischargeable capacity of described noise elimination cavity (2) is 30 to 45 cubic centimetres.
6, as each described idle call pulse muffler among the claim 1-4, it is characterized in that: the gross area of described a plurality of through holes (6) is greater than the sectional area of pipe (5) in the described silencer.
7, as each described idle call pulse muffler in the claim 14, it is characterized in that: described a plurality of through holes (6) are managed in described silencer and are evenly disperseed on the tube wall of (5) to be provided with.
8, as each described idle call pulse muffler among the claim 1-4, its feature exists: have at least a described through hole (6) to be located in the described silencer pipe (5) and locate near described outer tube import (3).
9, as each described idle call pulse muffler among the claim 1-4, it is characterized in that: on the tube wall that described silencer outer tube (1) is located near outer tube outlet (4), be provided with recess (7).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200620306U CN2926903Y (en) | 2006-07-25 | 2006-07-25 | Pulsation silencer for air conditioner |
| PCT/CN2007/001692 WO2008014659A1 (en) | 2006-07-25 | 2007-05-24 | A pulse muffler for an air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200620306U CN2926903Y (en) | 2006-07-25 | 2006-07-25 | Pulsation silencer for air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2926903Y true CN2926903Y (en) | 2007-07-25 |
Family
ID=38281151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200620306U Expired - Lifetime CN2926903Y (en) | 2006-07-25 | 2006-07-25 | Pulsation silencer for air conditioner |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN2926903Y (en) |
| WO (1) | WO2008014659A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912754A (en) * | 2012-12-31 | 2014-07-09 | 海尔集团公司 | Silencer and manufacturing method therefore as well as refrigerator |
| CN104863861A (en) * | 2015-05-05 | 2015-08-26 | 于浩 | Pulse sound attenuation device for screw rod type refrigerating machine |
| CN107956673A (en) * | 2017-11-21 | 2018-04-24 | 浙江工贸职业技术学院 | A kind of Muffling vibration absorber |
| CN109405317A (en) * | 2018-09-25 | 2019-03-01 | 青岛海尔空调电子有限公司 | Gas-supplying enthalpy-increasing pipe-line system for air conditioner |
| 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 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338257B (en) * | 2010-07-28 | 2013-05-29 | 新昌县铁牛金属制造有限公司 | Stainless steel muffler and manufacturing process thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86104117B (en) * | 1986-11-27 | 1988-04-27 | 上海船用柴油机研究所 | Frequency modulation type exhausting gas flow stabilizing device |
| CN2424299Y (en) * | 2000-01-11 | 2001-03-21 | 魏多山 | Automobile silencer |
-
2006
- 2006-07-25 CN CNU2006200620306U patent/CN2926903Y/en not_active Expired - Lifetime
-
2007
- 2007-05-24 WO PCT/CN2007/001692 patent/WO2008014659A1/en active Application Filing
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912754A (en) * | 2012-12-31 | 2014-07-09 | 海尔集团公司 | Silencer and manufacturing method therefore as well as refrigerator |
| CN104863861A (en) * | 2015-05-05 | 2015-08-26 | 于浩 | Pulse sound attenuation device for screw rod type refrigerating machine |
| CN107956673A (en) * | 2017-11-21 | 2018-04-24 | 浙江工贸职业技术学院 | A kind of Muffling vibration absorber |
| 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 |
| CN109405317A (en) * | 2018-09-25 | 2019-03-01 | 青岛海尔空调电子有限公司 | Gas-supplying enthalpy-increasing pipe-line system for air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008014659A1 (en) | 2008-02-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070725 |
|
| EXPY | Termination of patent right or utility model |