CN1580574A - Silencing device of compressor - Google Patents
Silencing device of compressor Download PDFInfo
- Publication number
- CN1580574A CN1580574A CN 03130512 CN03130512A CN1580574A CN 1580574 A CN1580574 A CN 1580574A CN 03130512 CN03130512 CN 03130512 CN 03130512 A CN03130512 A CN 03130512A CN 1580574 A CN1580574 A CN 1580574A
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- silencing apparatus
- exhaust port
- compressor
- upper bearing
- internal layer
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- Compressor (AREA)
Abstract
This invention provides a sound suppressor of a compressor including a double layer of an internal sound suppressor and an external sound suppressor with exhaust outlets above the upper bearing with exhaust outlet, among which, the exhaust outlet position of the intenal sound suppressor is set at the place taking the outlet of the upper bearing as the base point rotating counter-clock-wise to the third phase to prolong the flowing path of gas in the inteal layer sound suppressor. The outer sound suppressor is a three flap for increaisng its cavity volume. The distance between two rows of gas holes of the outer suppressor is designed equalizing to the odd times of half-wavelength of the bearing eliminated noise frequency and in opposite phase to the flown sound wav from the hole.
Description
Technical field
The present invention relates to a kind of compressor, particularly improve the silencing apparatus of the compressor of compressor muffler structure.
Background technique
Rotary compressor is widely used in the electric equipments such as refrigerator, air-conditioning, rotary compressor sucks the gaseous coolant through evaporator evaporation, after it is compressed to rated pressure, be discharged into the work system of refrigerant again, rotary compressor is the compressor that can suck and discharge refrigerant continuously.
Fig. 1 is the sectional arrangement drawing of existing compressor, the compressor of representing among Fig. 1 is the rolling rotor rotary compressor, by shown in Figure 1, rotary compressor has airtight casing 10, the stator 21 of rotary compressor motor and rotor 22 are installed in the top of casing 10, rotor 22 center fixed have eccentric shaft 30, cylinder of compressor body 40 is positioned at the bottom of airtight casing 10, the eccentric part 31 that eccentric shaft 30 is arranged in the cylindrical cylinder hole of cylinder block 40 central authorities, on the external cylindrical surface of eccentric part 31 rolling rotor is arranged, when eccentric part 31 carries out the circular movement rotation with eccentric shaft 30 in cylinder-bore, the rolling rotor compression enters the gaseous coolant in the cylinder block 40, also has the height of separation in the cylinder block, the baffle plate (not shown) of low pressure area refrigerant, on the cylinder block 40, the lower end surface is fixed with blanket gas cylinder body end face, and supports the upper bearing 51 and the lower bearing 52 of eccentric shaft 30 rotations.
In the side of airtight casing 10 sucking pipe 60 is arranged, sucking pipe 60 enters in the pressing chamber 41 of compressor cylinder block 40 refrigerant.The drain tap (not shown) is installed on the upper-end surface of upper bearing 51, drain tap is discharged to the pressing chamber of refrigerant by cylinder block 40 in the silencing apparatus 80, again by being discharged in the silencing apparatus 80 in the airtight casing 10, there is outlet pipe 70 top of airtight casing 10, and outlet pipe 70 enters the refrigerant in the airtight casing 10 circulatory system of refrigerant.
After the rolling rotor rotary compressor of said structure is connected power supply, rotor 22 rotations in the airtight casing 10, make the rotation of eccentric shaft 30 and rolling rotor, compression enters the refrigerant of cylinder block 40 in cylinder block 40, when the refrigerant in the pressing chamber 41 reaches certain pressure, the drain tap that is installed in upper bearing 51 upper-end surfaces is opened, compressed refrigerant enters silencing apparatus, pore through silencing apparatus enters in the closed shell 10 again, when the pressure of pressing chamber descends, drain tap is closed, and prevents that refrigerant from refluxing, and at this moment compressor is in the state that sucks refrigerant.
Silencing apparatus 80 is installed in the top of upper bearing 51, silencing apparatus 80 is the thin-walled case, profile is the middle porose oblate cylindricality of ring-type, the inner cavity that forms annular, lower openings, cover on upper bearing 51 tops, penetrate the necked part of upper bearing 51 in the hole in the middle of the silencing apparatus, silencing apparatus 80 usefulness screws 82 are fixed on the upper bearing 51.The upper-end surface of silencing apparatus 80 and upper bearing 51 surrounds cavity, internal layer silencing apparatus and outer silencing apparatus are equipped with in its inside, after being positioned at refrigerant that the drain tap of upper bearing upper-end surface discharges and entering the cavity of silencing apparatus 80, through inside and outside layer silencing apparatus, the exhaust port by silencing apparatus 80 enters in the airtight casing 10.
The flowing state that drain tap is discharged air-flow is the periodically pulsing air-flow, and air-flow has very big impact and variation in pressure.
During rotary compressor work, the switching that reaches drain tap of flowing of gaseous coolant all can cause very strong impact noise, and very wide frequency domain is arranged, it is the main noise source of rotary compressor, during rotary compressor work, the switching that reaches drain tap of flowing of gaseous coolant all can cause very strong impact noise, and very wide frequency domain is arranged, and is the main noise source of rotary compressor.Existing baffler 80 is a double layer construction, is made up of internal layer silencing apparatus 81 and outer silencing apparatus 82.The center hole 91 of internal layer silencing apparatus 81 and the center hole of outer silencing apparatus 82 93 successively are installed on the upper bearing (metal) 51 respectively and pass through bolt.Hole 92 is the exhaust port of internal layer silencing apparatus.Hole 94 and 95 is the exhaust port of outer silencing apparatus.Because the shape of outer baffler 82 and the identical five lobe type structures that are of shape of internal layer silencing apparatus 81, the inner space of outer silencing apparatus 82 is less, carries out noise reduction by the expansion volume, and erasure effect is bad, and especially to the noise of particular frequency bands, erasure effect is poorer.
Have the relatively simple for structure of silencing apparatus 80 now, the inner space of silencing apparatus is less, carries out noise reduction by the expansion volume, and erasure effect is bad, and especially to the noise of particular frequency bands, erasure effect is poorer.
Summary of the invention
At the deficiency on the acoustic wave filter structure in the prior art, the purpose of this invention is to provide the position that changes internal layer silencing apparatus exhaust port, change the shape of outer silencing apparatus simultaneously and increase the silencing apparatus of its divergence ratio with the compressor that increases sound deadening capacity.
For achieving the above object, technological scheme of the present invention provides a kind of silencing apparatus of compressor, include be installed in the upper bearing top that has exhaust port by internal layer silencing apparatus that has exhaust port and outer silencing apparatus double layer construction, wherein: the exhaust port that the exhaust port position of described internal layer silencing apparatus is arranged on upper bearing is that basic point is rotated counterclockwise to the third phase limit, prolongs the path flow through of refrigerant at the internal layer silencing apparatus.
The three lobe types that are shaped as of described outer silencing apparatus are to increase its cavity volume.
Distance between two exhaust ports of described outer silencing apparatus is set to equal the odd-multiple of the half-wavelength of the frequency noise that will subdue, and opposite with the phase place of the sound wave of flowing through away through exhaust port.
Effect of the present invention is the position of this technology by change internal layer silencing apparatus exhaust port, has prolonged air-flow and has flow through the path in the institute of internal layer silencing apparatus.Simultaneously, the shape that changes outer silencing apparatus increases sound deadening capacity to increase its divergence ratio, and particularly to the noise of particular frequency bands, erasure effect obviously improves.
Description of drawings
Fig. 1 is the sectional arrangement drawing of existing rotary compressor;
Fig. 2 is the internal layer silencing apparatus of existing rotary compressor;
Fig. 3 is the outer silencing apparatus of existing rotary compressor;
Fig. 4 is a compressor internal layer silencing apparatus of the present invention;
Fig. 5 is the outer silencing apparatus of compressor of the present invention.
Embodiment
Reaching embodiment in conjunction with the accompanying drawings is illustrated the silencing apparatus of compressor of the present invention.
Shown in Fig. 4,5, the structure of the silencing apparatus of compressor of the present invention include be installed in the upper bearing top that has exhaust port by internal layer silencing apparatus that has exhaust port and outer silencing apparatus double layer construction, wherein: the exhaust port 101 that exhaust port 97 positions of described internal layer silencing apparatus 83 are arranged on upper bearing is that basic point is rotated counterclockwise to the third phase limit, prolongs the path flow through of refrigerant at internal layer silencing apparatus 83.
The three lobe types that are shaped as of described outer silencing apparatus 84; Distance between the exhaust port 99 and 100 of outer silencing apparatus 84 is set to equal the odd-multiple of the half-wavelength of the frequency noise that will subdue, and opposite with the phase place of the sound wave of flowing through away through exhaust port 99 and 100, to increase its cavity volume.
The silencing apparatus of compressor of the present invention is achieved in that
The present invention at first changes the position of the exhaust port 97 of internal layer silencing apparatus 83 on the structure, the exhaust port 101 that exhaust port 97 positions are arranged on upper bearing is that basic point is rotated counterclockwise to the third phase limit, from Fig. 2 and Fig. 4, can see position for upper bearing (metal) upper air-vent 101, refrigerant is pressed the direction shown in the figure upward arrow and is flowed, and has prolonged refrigerant significantly and has flow through the path in the institute of internal layer silencing apparatus 83.Secondly,, increase its cavity volume, therefore also just increased refrigerant flows to outer silencing apparatus 84 from internal layer silencing apparatus 83 divergence ratio by changing the three lobe types that are shaped as of outer silencing apparatus 84.According to the acoustic wave filter structure of anti-formula noise-cancelling theory, sudden change place by acoustic feature in the pipeline has reached the noise elimination purpose with acoustic wave segment reflected back Sounnd source direction.In addition, for high frequency noise being played good noise reduction, adjust the distance between the exhaust port 99 and 100 of outer silencing apparatus 84, make its odd-multiple apart from the half-wavelength of the frequency noise that equals to subdue, and be just in time opposite, thereby cancel out each other and reach noise elimination purpose particular frequencies with the phase place of the sound wave of flowing through away through exhaust port 99 and 100.
The invention reside in by improvement, increase divergence ratio from the exhaust port 97 of internal layer silencing apparatus 83 to outer silencing apparatus 84 to outer silencing apparatus 84 structures.The increase of divergence ratio will increase the sound deadening capacity of silencing apparatus.
Claims (3)
1, a kind of silencing apparatus of compressor, include be installed in the upper bearing top that has exhaust port by internal layer silencing apparatus that has exhaust port and outer silencing apparatus double layer construction, it is characterized in that: the exhaust port (101) that the exhaust port position of described internal layer silencing apparatus (83) is arranged on upper bearing is that basic point is rotated counterclockwise to the third phase limit, prolongs the path flow through of refrigerant in internal layer silencing apparatus (83).
2, the silencing apparatus of compressor according to claim 1 is characterized in that: the three lobe types that are shaped as of described outer silencing apparatus (84), and to increase its cavity volume.
3, the silencing apparatus of compressor according to claim 1 and 2, it is characterized in that: the exhaust port (99) of described outer silencing apparatus (84) and the distance between (100) are set to equal the odd-multiple of the half-wavelength of the frequency noise that will subdue, and opposite with the phase place of the sound wave of flowing through away through exhaust port (99) and (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03130512 CN1580574A (en) | 2003-07-30 | 2003-07-30 | Silencing device of compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03130512 CN1580574A (en) | 2003-07-30 | 2003-07-30 | Silencing device of compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1580574A true CN1580574A (en) | 2005-02-16 |
Family
ID=34578919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03130512 Pending CN1580574A (en) | 2003-07-30 | 2003-07-30 | Silencing device of compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1580574A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101326370B (en) * | 2005-12-27 | 2012-04-04 | 大金工业株式会社 | Rotary compressor |
| CN101331323B (en) * | 2005-12-28 | 2012-04-18 | 大金工业株式会社 | Compressor |
| CN102562600A (en) * | 2010-12-22 | 2012-07-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor silencing device and compressor with same |
| CN105402136A (en) * | 2015-12-09 | 2016-03-16 | 广东美芝制冷设备有限公司 | Compressor silencer and rotary compressor with same |
| CN113090532A (en) * | 2019-12-23 | 2021-07-09 | 上海海立电器有限公司 | Double-layer noise reduction structure of compressor and compressor |
-
2003
- 2003-07-30 CN CN 03130512 patent/CN1580574A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101326370B (en) * | 2005-12-27 | 2012-04-04 | 大金工业株式会社 | Rotary compressor |
| CN101331323B (en) * | 2005-12-28 | 2012-04-18 | 大金工业株式会社 | Compressor |
| CN102562600A (en) * | 2010-12-22 | 2012-07-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor silencing device and compressor with same |
| CN102562600B (en) * | 2010-12-22 | 2015-03-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor silencing device and compressor with same |
| CN105402136A (en) * | 2015-12-09 | 2016-03-16 | 广东美芝制冷设备有限公司 | Compressor silencer and rotary compressor with same |
| CN113090532A (en) * | 2019-12-23 | 2021-07-09 | 上海海立电器有限公司 | Double-layer noise reduction structure of compressor and compressor |
| CN113090532B (en) * | 2019-12-23 | 2023-02-28 | 上海海立电器有限公司 | Double-layer noise reduction structure of compressor and compressor |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |