CN1332161C - Silencer for refrigerator - Google Patents
Silencer for refrigerator Download PDFInfo
- Publication number
- CN1332161C CN1332161C CNB2005100325269A CN200510032526A CN1332161C CN 1332161 C CN1332161 C CN 1332161C CN B2005100325269 A CNB2005100325269 A CN B2005100325269A CN 200510032526 A CN200510032526 A CN 200510032526A CN 1332161 C CN1332161 C CN 1332161C
- Authority
- CN
- China
- Prior art keywords
- silencer
- pipe
- noise
- capillary
- refrigerator
- 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 - Fee Related
Links
- 230000003584 silencer Effects 0.000 title claims description 72
- 238000002347 injection Methods 0.000 abstract description 11
- 239000007924 injection Substances 0.000 abstract description 11
- 230000030279 gene silencing Effects 0.000 abstract description 7
- 230000007704 transition Effects 0.000 abstract description 7
- 238000001816 cooling Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 238000005057 refrigeration Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 230000008030 elimination Effects 0.000 description 4
- 238000003379 elimination reaction Methods 0.000 description 4
- 230000014509 gene expression Effects 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 210000005239 tubule Anatomy 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/12—Sound
Landscapes
- Compressor (AREA)
Abstract
The present invention relates to a silencing device for reducing the noise pollution of fridges, which is connected between an inlet pipe of a fridge evaporator and a capillary outlet and is composed of three sections of silencing pipes with equal sections, wherein each silencing pipe is formed by connecting a front, a middle and a rear small cylindrical silencing pipes. The present invention fully uses the silencing principle of reducing flow speed in order to reducing injection noise, the silencing principle of stabilizing flow in order to reduce turbulent flow in a cooling system, the theoretical foundation of reducing the inserting depth of a capillary outlet in order to fix a capillary to reduce the vibration of the capillary, etc. to reduce the integrated noise level of a fridge and to greatly reduce the flow noise of a capillary outlet of a fridge after various measures, such as the transition of the injection noise of the capillary outlet through uniform sections for speed reduction, flow stabilization through the length of a transition pipe, capillary outlet fixation in order to reduce vibration, etc., are carried out. In addition, the present invention has the advantages of simple structure and convenient manufacture and installation.
Description
Technical field
The present invention relates to a kind of muffler for refrigerator, specifically, relate to a kind ofly be used to reduce the refrigerator capillary outlet injection noise that flows, and then reduce the silencing apparatus of refrigerator noise pollution.
Background technology
The noise research of present refrigerator has focused on the research field of refrigeration system of refrigerator pipe interior hydrodynamic noise, for refrigerator, present overall noise level has been stabilized in 40dB following (direct cooling refrigerator), and to further reduce the noise level of refrigerator, except the noise level that reduces freezer compressor, just must optimize the design of refrigerator refrigeration system, reduce refrigerator outlet noise capillaceous.The inventor has carried out the research of long period to this problem, thinks that the overall noise level of refrigerator will reach lower, must pay attention to the internal flow noise of refrigerator refrigeration system, the outlet injection noise of gas-liquid mixture especially capillaceous.According to the noise control theory, we know, the acoustical power of outlet gas-liquid mixing jetting noise capillaceous is directly proportional with 3～8 powers of outlet jet velocity, that is to say: reduce the capillary outlet injection noise, just must reduce the jet velocity of the gas-liquid mixture of capillary outlet, again according to the correlation theories knowledge of hydrodynamics and Engineering Thermodynamics, adopt the transition conduit of abrupt-change cross section to connect capillary and evaporator pipe, just can reduce refrigerator capillary outlet injection of refrigerant speed effectively, and then reduce hydrodynamic noise capillaceous, therefore suppress overall noise level and the noise pollution that this capillary outlet injection noise just can reduce refrigerator.
And being 92103280.3 open files, application number number for CN1064924A patent of invention specification a kind of muffler for refrigerator is disclosed, this silencer is a kind of muffler for refrigerator that reduces the capillary vibration, by being arranged at evaporimeter Bandaid pipe and intercapillary hush tube is formed, an end that it is characterized in that hush tube inserts in the Bandaid pipe, and weld mutually with the end face of Bandaid pipe, capillary is arranged in the hush tube, and the one end stretches out in, and hush tube is outer to communicate with the Bandaid pipe, its other end stretches out the other end of hush tube, and be connected with device for drying and filtering, this end face of hush tube welds mutually with capillary, and the highest level of its noise quality is 42dB (decibel).
From above-mentioned open file as can be seen, the technical measures of this invention are to reduce vibration capillaceous, and then the noise level of reduction refrigerator, not helpful to the reduction of the mobile injection noise of capillary outlet, simultaneously, because the capillary that this invention proposed is to stretch out the outer structure of hush tube, and capillary and this hush tube are matched in clearance, this extension must cause cantilever beam structures, under the driving of cold-producing medium high velocity jet air-flow, certainly lead to new vibration, can not guarantee the effect of its described minimizing capillary vibration effectively; On the one hand, for existing actual refrigerator capillary system, the vibration of capillary outlet itself is very little in addition, and the noise level of current refrigerator generally has been lower than 40dB in addition.Therefore, this invention has lost the scope of its application, so the present invention just adopts new thinking, new know-why and new version, and then reach the purpose that reduces refrigerator capillary outlet refrigerant injection noise, have the result of use of better reduction noise.
Summary of the invention
The technical problem that the present invention need solve is: at the very high outlet jet velocity of refrigeration system of refrigerator capillary outlet gas-liquid cold-producing medium, and design a kind of silencer that can reduce capillary outlet gas-liquid refrigerant injection speed, thereby improve the sound quality of refrigerator, reduce the overall noise level of refrigerator.
Theoretical foundation of the present invention: according to two phase flow and noise control theory as can be known, diameter is the structure that the round spout of D has formed free spray.Can be divided into the mixed zone for full-blown spray, transition region and abundant development zone.The core of mixed zone is the core of spray, core length in other words the extended distance of mixed zone approximately be nozzle diameter 4-4.5 doubly, transition region roughly expands to the place of 10 times of diameters.The jet noise major part is from the turbulent motion of mixed zone and transition region, and high-frequency noise mainly produces near spout, and low-frequency noise mainly produces in the downstream, and spectral peak is near the tip of core.With regard to acoustical power, the total acoustic power of spray approximately is directly proportional to eight power with the biquadratic of flow velocity in addition, reduces flow velocity and can reduce noise greatly.
According to refrigeration principle as can be known, for refrigerator internal flow capillaceous, portion is essentially to block and flows within it, the gaseous refrigerant outlet jet velocity of capillary outlet has all reached local velocity of sound, the noise that capillary outlet speed height will cause capillary outlet to spray raises, and therefore must adopt certain transition conduit structure to stablize outlet flow regime capillaceous, reduce flowing velocity.The present invention is the technical measures for realizing that this purpose is taked just.
The technical solution adopted in the present invention: muffler for refrigerator is connected between evaporator of electric refrigerator inlet tube and the capillary outlet, silencer by the uiform section silencer of three joint different-diameters before pipe, manage behind pipe and the silencer in the silencer and form.The degree of depth that capillary inserts in the preceding pipe of silencer is 12～18mm, capillary can adopt Lip river gram ring or welding to be connected with the preceding pipe of silencer, adopt modes such as welding, gluing and Lip river gram ring to be connected and fixed between each hush tube and the hush tube, the length of pipe is 45～55mm before the silencer, the length of pipe is 65～100mm in the silencer, to insert the degree of depth of pipe in the silencer be 12～15mm to pipe before the silencer, and pipe inserts that the degree of depth of pipe is 12～15mm behind the silencer in the silencer.
Described silencer hush tube by before, during and after three cylindrical noise elimination tubules join and form, promptly before the silencer in pipe and the silencer end of pipe join, behind the silencer in the Guan Zaiyu silencer other end of pipe join.
Beneficial effect of the present invention: the present invention has made full use of three joint abrupt-change cross section pipes and has slowed down and reactive muffling principle scheduling theory foundation, after the jet velocity that makes the refrigerator capillary outlet is slowed down through suitable uiform section hush tube, the outlet hydrodynamic noise capillaceous of refrigerator reduces greatly, the overall noise level of refrigerator has tangible reduction, and the present invention is lighter than traditional silencer, its simple structure is processed, installs all very convenient.
Description of drawings
Fig. 1 is silencer of the present invention;
Fig. 2 is the connection diagram of capillary outlet and silencer;
Fig. 3 is start shooting a noise variation diagram in the stopping process of the refrigerator before and after muffler for refrigerator is installed;
Fig. 4 is that muffler for refrigerator is installed noise A change in sound level figure in the refrigerator running of front and back.
The specific embodiment
Referring to Fig. 1, the present invention is made up of prismatic hush tube, hush tube by before, during and after three prismatic cylindrical noise elimination tubules join and form, promptly before the silencer in pipe 1 and the silencer end of pipe 2 join, behind the silencer pipe 3 again with silencer in the other end of pipe 2 join.The length of pipe 1 is 45～55mm before the silencer, and the internal diameter of pipe 1 is 1.9～2mm before the silencer; The degree of depth that pipe 1 inserts pipe 2 in the silencer before the silencer is 12～15mm, before the silencer in pipe 1 and the silencer connected mode of pipe 2 be welding, the internal diameter of pipe 2 is the external diameter of pipe 1 before the silencer in the silencer, the length of pipe 2 is 65～100mm in the silencer; The degree of depth of pipe 3 is 12～15mm behind the middle pipe 2 insertion silencers, pipe 2 external diameter equals the internal diameter of pipe 3 behind the silencer in the silencer, the length of pipe 3 can be adjusted according to actual needs behind the silencer, the specification of the internal diameter of pipe 3 and external diameter is consistent with the specification of the pipeline (copper pipe or aluminum pipe or Bandaid pipe) of employed evaporimeter behind the silencer, manages 3 in the silencer behind pipe 2 and the silencer and adopts welding fixing.The material of hush tube is copper pipe or aluminum pipe or Bandaid pipe.Among Fig. 1 between the noise elimination tubule and hush tube and the mode of joining capillaceous be mainly Lip river gram ring and be connected, also can adopt welding, splicing or other modes.
Referring to Fig. 2, this silencer is connected between the outlet of the inlet tube of evaporator of electric refrigerator 7 and capillary 4.Silencer 5 adopts Lip river gram ring 6 with capillary 4 and evaporimeter 7 or is welded to connect.In actual use, the degree of depth that requires capillary 2 to insert the preceding pipe of this silencer is 12～18mm.
Referring to Fig. 3 and Fig. 4, it has embodied noise elimination effect curve of the present invention.Noise spectrum before series 1 expression among Fig. 3 fixes a silencer distributes; Noise spectrum after series 2 expressions fix a silencer distributes.Noise A level distribution before series 1 expression among Fig. 4 fixes a silencer; Noise A level distribution after series 2 expressions fix a silencer.From Fig. 3 and Fig. 4 as can be seen, used the later refrigerator noise spectrum curve of silencer of the present invention that clearly change is arranged, in frequency is that the noise of refrigerator main noise frequency bands such as 500～1600Hz and 2500～5000Hz all decreases, especially near the noise 630Hz reduces a lot, and the noise of this frequency band main component of capillary outlet injection noise just.Noise mean value before installing is 37.8dB, the later noise figure of this silencer has been installed has been had only 35.5dB.In addition as can be seen from Figure 4, used the later refrigerator noise of this silencer all very stable in whole start running.So this silencer has the noise contributions that very significantly reduces small-type refrigeration appliance.
Range of application of the present invention is not limited only to refrigerator, uses capillary to have effect equally as the small-type refrigeration appliance of throttle device such as the noise figure of air-conditioning for reducing.
Claims (2)
1, a kind of muffler for refrigerator, it is characterized in that: silencer by the silencer of three joint different-diameters before pipe, manage behind pipe and the silencer in the silencer and form, capillary is managed 12～18mm before inserting silencer, and with silencer before pipe adopt Lip river gram ring or weld together, during pipe inserts before the silencer in the pipe and weld together, pipe inserts behind the silencer in the pipe and welds together in the silencer; The length of pipe is 45～55mm before the silencer, and the length of pipe is 65～100mm in the silencer, and to insert the degree of depth of pipe in the silencer be 12～15mm to pipe before the silencer, and pipe inserts that the degree of depth of pipe is 12～15mm behind the silencer in the silencer.
2, a kind of muffler for refrigerator according to claim 1, it is characterized in that: the internal diameter of pipe is 1.9～2mm before the silencer, the internal diameter of pipe is 4mm in the silencer, and the internal diameter of pipe equates with the external diameter of pipe in the silencer behind the silencer, and external diameter equates with the outer diameter tube of connecing evaporimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100325269A CN1332161C (en) | 2005-12-09 | 2005-12-09 | Silencer for refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100325269A CN1332161C (en) | 2005-12-09 | 2005-12-09 | Silencer for refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1786623A CN1786623A (en) | 2006-06-14 |
| CN1332161C true CN1332161C (en) | 2007-08-15 |
Family
ID=36784176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100325269A Expired - Fee Related CN1332161C (en) | 2005-12-09 | 2005-12-09 | Silencer for refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1332161C (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995120A (en) * | 2009-08-13 | 2011-03-30 | 上海杜氏实业有限公司 | Refrigeration pipeline capable of reducing noise of refrigerator |
| CN102003847A (en) * | 2010-11-04 | 2011-04-06 | Tcl空调器(中山)有限公司 | Sound-proof transition pipe |
| CN102072599B (en) * | 2011-01-24 | 2013-03-27 | 合肥美的荣事达电冰箱有限公司 | Refrigeration equipment and transition pipe for same |
| DE102011006856A1 (en) * | 2011-04-06 | 2012-10-11 | BSH Bosch und Siemens Hausgeräte GmbH | Domestic refrigerator with refrigerant piping |
| CN102147175B (en) * | 2011-04-19 | 2012-11-28 | 江苏白雪电器股份有限公司 | Connecting structure of evaporator and capillary tube |
| CN102278838B (en) * | 2011-08-17 | 2016-08-31 | 海尔集团公司 | Tube-in-sheet evaporator and refrigerator |
| CN102620488B (en) * | 2012-03-27 | 2016-11-16 | 海尔集团公司 | Capillary tube and vaporizer attachment means and there is its refrigerating plant |
| CN104329840A (en) * | 2013-09-10 | 2015-02-04 | 海尔集团公司 | Refrigerating system of refrigerator and refrigerator |
| CN104501482A (en) * | 2014-12-23 | 2015-04-08 | 合肥美的电冰箱有限公司 | Evaporator assembly and transition tube |
| CN106286211A (en) * | 2015-05-13 | 2017-01-04 | 中南大学 | H type small refrigeration systems acoustic filter |
| CN106339555A (en) * | 2016-08-29 | 2017-01-18 | 张明 | Capillary flow noise analysis and structural transformation design system |
| CN109974378B (en) * | 2017-12-27 | 2024-03-22 | 海尔智家股份有限公司 | Refrigerator with a refrigerator body |
| CN109974379A (en) * | 2017-12-27 | 2019-07-05 | 青岛海尔股份有限公司 | Refrigerator |
| CN108007038A (en) * | 2017-12-28 | 2018-05-08 | 青岛海尔智能技术研发有限公司 | A kind of vacuum transition pipe and refrigerant denoising device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1064924A (en) * | 1992-05-09 | 1992-09-30 | 中国人民解放军第9511工厂 | Muffler for refrigerator |
| CN2122302U (en) * | 1992-05-09 | 1992-11-18 | 中国人民解放军9511工厂 | Refrigerator silencer |
| CN1171529A (en) * | 1996-07-18 | 1998-01-28 | 长岭(集团)股份有限公司 | Silencer |
| KR100187199B1 (en) * | 1996-08-14 | 1999-05-01 | 김광호 | Muffler for a refrigerator |
-
2005
- 2005-12-09 CN CNB2005100325269A patent/CN1332161C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1064924A (en) * | 1992-05-09 | 1992-09-30 | 中国人民解放军第9511工厂 | Muffler for refrigerator |
| CN2122302U (en) * | 1992-05-09 | 1992-11-18 | 中国人民解放军9511工厂 | Refrigerator silencer |
| CN1171529A (en) * | 1996-07-18 | 1998-01-28 | 长岭(集团)股份有限公司 | Silencer |
| KR100187199B1 (en) * | 1996-08-14 | 1999-05-01 | 김광호 | Muffler for a refrigerator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1786623A (en) | 2006-06-14 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081219 Address after: No. 268 Chuk Yuen Road, Pujiang Town, Shanghai, Minhang District Patentee after: Shanghai Furong Industry Co., Ltd. Address before: Yuelu District Lushan South Road, Xiyuan Hunan Province, Central South University, Changsha city of three building No. 503 Patentee before: Liu Yicai |
|
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI FURONG INDUSTRY CO. Free format text: FORMER OWNER: LIU YICAI Effective date: 20081219 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070815 Termination date: 20171209 |
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| CF01 | Termination of patent right due to non-payment of annual fee |