CN1024708C - Casing for reducing noise of closed reciprocating refrigeration compressor - Google Patents
Casing for reducing noise of closed reciprocating refrigeration compressor Download PDFInfo
- Publication number
- CN1024708C CN1024708C CN 91107459 CN91107459A CN1024708C CN 1024708 C CN1024708 C CN 1024708C CN 91107459 CN91107459 CN 91107459 CN 91107459 A CN91107459 A CN 91107459A CN 1024708 C CN1024708 C CN 1024708C
- Authority
- CN
- China
- Prior art keywords
- compressor
- upper encloser
- dividing plate
- noise
- casing
- 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
- 238000005057 refrigeration Methods 0.000 title abstract description 5
- 208000002925 dental caries Diseases 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims description 2
- 239000003507 refrigerant Substances 0.000 abstract description 6
- 230000010349 pulsation Effects 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- 230000030279 gene silencing Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000002889 sympathetic effect Effects 0.000 description 1
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- Compressor (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
A casing for reducing the noise of enclosed reciprocating refrigerating compressor is composed of upper and lower casings. The invention is characterized in that a clapboard is arranged in an upper housing to divide the upper housing into two cavities. The invention makes the natural vibration frequency of the refrigerant in the cavity formed by the upper and lower enclosers avoid resonance generated by coupling the pulsation frequency of the suction side pressure of the compressor and the disturbance frequency of the moving parts of the compressor, thereby reducing the noise of the compressor. The invention is simple to implement and can be used for small and medium-sized refrigeration compressors such as refrigerators, air conditioners and the like.
Description
The invention belongs to a kind of casing that is used to reduce the enclosed and reciprocatable refrigerating compressor noise, be suitable for the middle-size and small-size refrigeration compressor that uses in refrigerator, the air conditioner especially.
When existing middle-size and small-size enclosed and reciprocatable refrigerating compressor was worked, noise reached sound power level 40-46dBA.The main cause that produces noise is that the pressure pulsation frequency that exists of the natural frequency of vibration and the suction side of the cavity refrigerant formed of upper and lower case and the forcing frequency of compressor moving parts are coupled, thereby excites the interior gas column sympathetic response in the 300-1000HZ zone of cavity to cause.
In the prior art in one method be to manage to change the upper encloser geometrical shape, adopt the complex-curved of plane, sphere and concave surface composition as German LK series compressor, PANASONIC Q series compressor adopts spherical upper encloser, and this resonance region is avoided in attempt, but effect is all undesirable.
Another kind method is the special-purpose silencing apparatus of packing in refrigeration compressor, when being flowed in silencing apparatus, refrigerant takes place repeatedly to expand, thereby can reduce the pressure pulsation intensity that suction side produces, the cavity natural frequency of vibration that makes it to avoid forming with last lower encioser vibes.But this kind method requires complicated acoustics design and coupling, thereby makes the current version compressor inner structure that great change take place.
The purpose of this invention is to provide a kind of casing that is used to reduce the enclosed and reciprocatable refrigerating compressor noise, can reduce the noise of enclosed and reciprocatable refrigerating compressor effectively.
The present invention is achieved in that a kind of casing that reduces the enclosed and reciprocatable refrigerating compressor noise, is made up of upper encloser and lower encioser, has dividing plate that upper encloser is divided into two cavitys in the upper encloser.
This piece dividing plate can be extending naturally of upper encloser body material, fixedlys connected with upper encloser after also can making with other metallic material again.
According to principle of resonance, after in upper encloser, dividing plate having been arranged, change has just taken place in the natural frequency of vibration of refrigerant in the cavity that the upper encloser of compressor and lower encioser are formed, thereby has avoided being coupled and empathizing with the forcing frequency of compressor suction side pressure ripple frequency and compressor moving parts.
The invention has the advantages that the noise in the time of to reduce compressor operation, and when enforcement is of the present invention, except that changing the upper encloser structure, needn't change other parts of compressor the current version compressor.
Fig. 1 is a schematic representation of the present invention.
Below with reference to accompanying drawing the present invention is done further narration.
With reference to Fig. 1, compressor movement 1, upper encloser 2 links to each other with dividing plate 3, in the cavity that upper encloser and lower encioser 4 are formed refrigerant and refrigeration oil 5 are arranged, the upper and lower case inner diameter of compressor (or ellipse long and short shaft internal diameter) is a, and the cavity height that upper encloser and lower encioser are formed is c, and dividing plate and upper encloser madial wall ultimate range in horizontal plane is b, the maximum height of dividing plate is d, and the angle of dividing plate and upper encloser axis is α.The position of dividing plate is by corresponding b, d, the decision of α value, and the forcing frequency of the interior refrigerant natural frequency of vibration of the cavity that it can avoid lower encioser to form effectively and compressor suction side pressure ripple frequency and compressor moving parts is coupled and empathizes.When getting b＞10mm; α＜45 °; During d＞10mm, can reduce noise 2-5dBA.
The present invention implements in 30 enclosed and reciprocatable freezer compressors two kinds of specifications totally.With thickness is 1.5mm, and d is that the steel plate of 40mm is welded on the upper encloser inwall and makes b=47mm, α=20 °, and data are as follows after tested:
After implementing before implementing to implement before implement the back
41-43.5 38-40 44.5-46 39-41
Claims (3)
1, a kind of casing that reduces the enclosed and reciprocatable refrigerating compressor noise is made up of upper encloser and lower encioser, it is characterized in that having in the upper encloser dividing plate that upper encloser is divided into two cavitys.
2, compressor case according to claim 1, the angle α that it is characterized in that dividing plate and compressor upper encloser axis are less than 45 °, and ultimate range b is greater than 10mm in horizontal plane for dividing plate and compressor upper encloser madial wall, and d is greater than 10mm for the dividing plate maximum height.
3, according to claim 1 or the described compressor case of claim 2, it is characterized in that this dividing plate can be extending naturally of upper encloser body material, fixedly connected with upper encloser again after also can making with other metallic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91107459 CN1024708C (en) | 1991-08-01 | 1991-08-01 | Casing for reducing noise of closed reciprocating refrigeration compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91107459 CN1024708C (en) | 1991-08-01 | 1991-08-01 | Casing for reducing noise of closed reciprocating refrigeration compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1068174A CN1068174A (en) | 1993-01-20 |
| CN1024708C true CN1024708C (en) | 1994-05-25 |
Family
ID=4908797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91107459 Expired - Fee Related CN1024708C (en) | 1991-08-01 | 1991-08-01 | Casing for reducing noise of closed reciprocating refrigeration compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1024708C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100387845C (en) * | 2004-09-28 | 2008-05-14 | 乐金电子(天津)电器有限公司 | Upper cover of hermetic rotary compressor |
-
1991
- 1991-08-01 CN CN 91107459 patent/CN1024708C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100387845C (en) * | 2004-09-28 | 2008-05-14 | 乐金电子(天津)电器有限公司 | Upper cover of hermetic rotary compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1068174A (en) | 1993-01-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |