CN210118237U - Noise elimination structure of compressor - Google Patents
Noise elimination structure of compressor Download PDFInfo
- Publication number
- CN210118237U CN210118237U CN201920814672.4U CN201920814672U CN210118237U CN 210118237 U CN210118237 U CN 210118237U CN 201920814672 U CN201920814672 U CN 201920814672U CN 210118237 U CN210118237 U CN 210118237U
- Authority
- CN
- China
- Prior art keywords
- chamber
- hole
- communicator
- pipe
- compressor
- 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.)
- Active
Links
Images
Landscapes
- Compressor (AREA)
Abstract
The utility model discloses a noise elimination structure of a compressor, which comprises a shell, wherein a first clapboard and a second clapboard which divide the shell into a first noise elimination chamber, a second noise elimination chamber and a third noise elimination chamber are arranged in the shell; one end of the shell is provided with an inlet pipe for communicating the first muffling chamber with a coil pipe of the compressor, and the other end of the shell is provided with an outlet pipe for communicating the third muffling chamber with the coil pipe of the compressor; the first partition plate and the second partition plate are provided with hollow tubes of the communicator, the inlet ends of the hollow tubes of the communicator are positioned in the first silencing chamber, and the outlet ends of the hollow tubes of the communicator are positioned in the third silencing chamber; the middle section of the hollow pipe of the communicator is positioned in the second silencing chamber, an expansion hole is arranged at the position, close to the first partition plate, of the middle section of the hollow pipe of the communicator, a reverse collecting hole is arranged at the position, close to the second partition plate, of the middle section of the hollow pipe of the communicator, and the expansion hole and the reverse collecting hole are respectively positioned on two sides of the hollow pipe of the communicator; the utility model discloses can realize tertiary noise elimination, noise cancelling effect is good.
Description
Technical Field
The utility model belongs to the technical field of the compressor is fallen and is fallen, concretely relates to noise cancelling structure of compressor.
Background
The utility model discloses a patent 201120157944.1 discloses "the technology of the exhaust muffler chamber structure of crankcase for the refrigeration compressor" on 2012 1 month 11. In the patent technology, aiming at the technical problems that a multistage muffling chamber of a cylinder block of a compressor needs to be machined, the geometric shape is limited, a muffling chamber sealing cavity needs to be formed by parts such as a gasket, a cover plate and screws, and assembling process requirements are increased, an exhaust muffling chamber structure is provided, and comprises a cylinder hole, an inlet, a cylindrical muffling chamber, an exhaust pipe and an abnormal muffling chamber, wherein the cylindrical muffling chamber, the gasket and the cover plate are fastened by the screws to form a second exhaust muffling chamber cavity, the abnormal muffling chamber is formed by casting to form a first exhaust muffling chamber cavity, and the abnormal muffling chamber is communicated with the cylindrical muffling chamber through a throttle hole. In the patent, because the structure of the primary muffling chamber of the exhaust muffling chamber is special, a separate mold core needs to be manufactured on a mold, and a relatively sealed cavity is manufactured after high-temperature pouring, impurities and sand in the cavity are not easy to find and are not easy to treat; due to the structure and space relationship of the cylindrical anechoic chamber, the sectional area of the cylindrical anechoic chamber cannot be large, and the expansion ratio of the inner cavity and the coil pipe is limited, so the anechoic quantity is limited; meanwhile, in the process of assembling the compressor, impurities such as impurities and sand grains are easy to block the exhaust port or enter a kinematic pair system of the compressor, so that the compressor is blocked and the like and seriously loses efficacy.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's is not enough, provides and to reduce the cylinder block volume, avoids making the anechoic chamber on the cylinder block, reduces machining, solves that the geometry is limited, still need parts such as gasket apron screw to form the defect that the anechoic chamber sealed chamber needs to increase the assembly process requirement, and energy-conserving material-saving, and can reduce the noise cancelling structure of the compressor of compressor noise by the at utmost.
In order to realize the purpose, the utility model discloses a technical scheme be:
the silencing structure of the compressor comprises a shell, wherein a first partition plate and a second partition plate which divide the shell into a first silencing chamber, a second silencing chamber and a third silencing chamber are arranged in the shell; one end of the shell is provided with an inlet pipe for communicating the first muffling chamber with a coil pipe of the compressor, and the other end of the shell is provided with an outlet pipe for communicating the third muffling chamber with the coil pipe of the compressor; hollow tubes of the communicating device are arranged on the first partition plate and the second partition plate, the inlet ends of the hollow tubes of the communicating device are positioned in the first silencing chamber, and the outlet ends of the hollow tubes of the communicating device are positioned in the third silencing chamber; the middle section of the hollow pipe of the communicator is positioned in the second silencing chamber, an expansion hole is arranged at the position, close to the first partition plate, of the middle section of the hollow pipe of the communicator, a reverse collecting hole is arranged at the position, close to the second partition plate, of the middle section of the hollow pipe of the communicator, and the expansion hole and the reverse collecting hole are respectively positioned on two sides of the hollow pipe of the communicator; or the middle section of the hollow pipe of the communicator is positioned in the second silencing chamber, and a through hole is formed in the middle section of the hollow pipe of the communicator.
The through hole and the second muffling chamber form a Helmholtz exhaust resonant cavity.
The resonance frequency of the Helmholtz exhaust resonant cavity can be adjusted by adjusting the area of the through hole of the hollow pipe of the communicator and the volume of the second muffling chamber; eliminating low-frequency noise, increasing the volume of the second silencing chamber, and reducing the sectional area of the through hole; medium frequency noise, etc., to reduce the second muffling chamber and increase the cross-sectional area of the through hole.
The length of the inlet pipe is one half of that of the first silencing chamber; the length of the outlet pipe is one fourth of the length of the third muffling chamber.
The interval between the expansion hole and the reverse collecting hole is 8-12 mm.
The utility model has the advantages that: the silencing structure of the compressor is characterized in that the silencing device is divided into a first-stage silencing chamber, a second-stage silencing chamber and a third-stage silencing chamber, two holes are formed in the hollow pipe of the connector positioned in the second-stage silencing chamber, the volume of refrigerant sprayed out of the expansion hole in the second-stage silencing chamber is expanded rapidly, the pressure is reduced, the flow velocity is reduced by diffusion, the intensity of radiation noise is weakened, the refrigerant with the reduced flow velocity enters the hollow pipe of the connector through the reverse collecting hole and then enters the third-stage silencing chamber, three-stage silencing is realized, and the best silencing effect is achieved.
Or the hollow pipe of the communicator of the second muffling chamber is provided with a through hole, and the through hole and the second muffling chamber form a Helmholtz exhaust resonant cavity. The Helmholtz exhaust resonant cavity can selectively eliminate low-frequency noise, and the noise elimination effect is improved by combining three-level noise elimination.
Under the condition that the silencing device achieves a good silencing effect, the size of the cylinder seat can be reduced, the silencing chamber is prevented from being manufactured on the cylinder seat, machining is reduced, the defects that the geometric shape is limited, and the requirement of an assembly process is increased when parts such as a gasket, a cover plate, a screw and the like are required to form a silencing chamber sealing cavity are overcome, and energy and materials are saved.
Drawings
The contents of the various figures of the specification and the labels in the figures are briefly described as follows:
fig. 1 and fig. 2 are schematic cross-sectional structural views of the sound attenuation structure of the compressor of the present invention.
Fig. 3 is a schematic cross-sectional structure diagram of a variant of the sound-deadening structure of the compressor of the present invention.
The labels in the above figures are:
1. the muffler comprises a pipe inlet 2, a first muffling chamber 3, a first partition plate 4, a second muffling chamber 5, a second partition plate 6, a third muffling chamber 7, a hollow pipe of a communicating device 8, an expansion hole 9, a reverse collecting hole 10, a through hole 11, a pipe outlet 12 and a shell.
Detailed Description
The following description of the preferred embodiments of the present invention will be made in further detail with reference to the accompanying drawings.
The arrows in the figure indicate the direction of refrigerant gas flow.
As shown in fig. 1 and 2, the noise elimination structure of the compressor comprises a shell 12, wherein a first partition plate 3 and a second partition plate 5 which divide the shell 12 into a first noise elimination chamber 2, a second noise elimination chamber 4 and a third noise elimination chamber 6 are arranged in the shell 12; one end of the shell 12 is provided with an inlet pipe 1 for communicating the first muffling chamber 2 with a coil pipe of the compressor, and the other end of the shell 12 is provided with an outlet pipe 11 for communicating the third muffling chamber 6 with the coil pipe of the compressor; the first partition plate 3 and the second partition plate 5 are provided with a hollow pipe 7 of the communicating device, the inlet end of the hollow pipe 7 of the communicating device is positioned in the first silencing chamber 2, and the outlet end of the hollow pipe 7 of the communicating device is positioned in the third silencing chamber; 7 interlude of UNICOM's ware hollow tube is located second anechoic chamber 4, and the position that 7 interlude of UNICOM's ware hollow tube are close to first baffle 3 is equipped with expansion hole 8, and the position that 7 interlude of UNICOM's ware hollow tube are close to second baffle 5 is equipped with reverse collection hole 9, and expansion hole 8 and reverse collection hole 9 are located the both sides of UNICOM's ware hollow tube 7 respectively. Preferably, the distance between the expanding hole 8 and the reverse collecting hole 9 is 8-12 mm.
The utility model discloses a first baffle 3 and second baffle 5 divide noise eliminator into one-level, second grade and tertiary anechoic chamber, and UNICOM's ware hollow tube 7 is from the first anechoic chamber 2 as the one-level anechoic chamber, through the second anechoic chamber 4 as the second grade anechoic chamber, arrives the third anechoic chamber 6 as the tertiary anechoic chamber again. Two holes are arranged at the position of the hollow pipe 7 of the connector of the secondary anechoic chamber, and refrigerant flows out of the expansion hole 8, enters the hollow pipe 7 of the connector through the reverse collecting hole 9 after being expanded, and then reaches the tertiary anechoic chamber from the hollow pipe 7 of the connector. The refrigerant sprayed from the expanding hole 8 in the second-stage silencing chamber expands rapidly, the pressure is reduced, the flow velocity is reduced by diffusion, the intensity of radiation noise is weakened, the refrigerant with reduced flow velocity enters the hollow pipe 7 of the communicating device through the reverse collecting hole 9 and then enters the third-stage silencing chamber, three-stage silencing is realized, and the best silencing effect is achieved.
The utility model discloses every grade silencer length can be according to required noise elimination frequency and try to get the wavelength, defines this grade of anechoic chamber length by the conversion relation of wavelength and length. In particular, different from the conventional noise elimination method, in the secondary noise elimination chamber, the volume of the refrigerant sprayed out from the expansion hole 8 is expanded rapidly, the pressure is reduced, the flow velocity is reduced by diffusion, the intensity of radiation noise is weakened, and the refrigerant with reduced flow velocity enters the hollow pipe 7 of the communicating device through the reverse collecting hole 9 positioned in the secondary noise elimination chamber and then enters the third noise elimination chamber 6, so that further noise elimination treatment is realized.
As another variant, as shown in fig. 3, the middle section of the hollow tube 7 of the connector is located in the second muffling chamber 4, and the middle section of the hollow tube 7 of the connector is provided with a through hole 10. The utility model discloses still take UNICOM ware hollow tube 7 with second anechoic chamber 4 to be provided with a through-hole 10, this through-hole 10 constitutes a Helmholtz exhaust resonant cavity with second anechoic chamber 4. The Helmholtz exhaust resonant cavity can selectively eliminate low-frequency noise, and the noise elimination effect is improved by combining three-level noise elimination.
The resonance frequency of the helmholtz exhaust resonance chamber can be adjusted by adjusting the area of the through hole 10 of the communicator hollow tube 7 and the volume of the second muffling chamber 4, and the volume of the second muffling chamber 4 can be changed by adjusting the positions of the first partition plate 3 and the second partition plate 5. Eliminating low-frequency noise, increasing the volume of the second silencing chamber 4, and reducing the sectional area of the through hole 10; the second muffling chamber 4 is reduced in size by the medium frequency noise, etc., and the cross-sectional area of the through-hole 10 is increased. During vibration, the column of air and the side walls of the orifice rub to dissipate acoustic energy, thereby reducing noise, while the Helmholtz exhaust resonance chamber is able to selectively muffle noise.
Because the main defect of the single-section expansion type silencer is that when kl is n pi, the transmission loss TL is always reduced to zero, a plurality of passing frequencies exist, three-stage expansion chambers are designed, each stage of silencing chamber has different passing frequencies, the three-stage expansion chambers are connected in series, the total silencing quantity is improved, passing frequency valleys with odd number and even number pairs are eliminated by the aid of the first-stage silencing 1/2L insertion pipe 1 and the 1/4L outlet pipe 11 (the L pipe is the length of the section of silencer), the frequency response characteristic curve of the silencer is flat, and noise elimination is achieved. I.e. preferably the length of the inlet pipe 1 is half the length of the first muffling chamber 2; the length of the outlet pipe 11 is one quarter of the length of the third muffling chamber 6.
The noise elimination principle of the noise elimination structure of the compressor is as follows: after the air flow enters the first muffling chamber 2 through the inlet pipe 1, the air flow enters the second muffling chamber 4 through the expansion hole 8 of the hollow pipe 7 of the communicating device, the volume of the refrigerant sprayed out of the expansion hole 8 is expanded rapidly, the pressure is reduced, the flow velocity is reduced by diffusion, the intensity of radiation noise is weakened, and the noise is reduced; the refrigerant with reduced flow rate enters the hollow pipe 7 of the communicating device through the reverse collecting hole 9, enters the hollow pipe 7 of the communicating device through the reverse collecting hole 9 positioned in the second silencing chamber 4, and then enters the third silencing chamber 6, so that three-level silencing is realized, and the exhaust silencing of the compressor is realized.
Or after the airflow enters the first muffling chamber 2 through the inlet pipe 1, the airflow enters the second muffling chamber 4 through the expansion holes 8 of the hollow pipe 7 of the communicator, the through holes 10 on the hollow pipe 7 of the communicator and the second muffling chamber 4 form a Helmholtz exhaust resonant cavity, and low-frequency noise can be selectively muffled in the second muffling chamber 4 to reduce the noise; the low-flow-rate refrigerant enters the third silencing chamber 6 through the hollow pipe 7 of the communicating device for three-stage silencing, so that the exhaust silencing of the compressor is realized.
The utility model discloses utilize tertiary anechoic chamber to eliminate the noise, combine expansion hole 8 and reverse collection hole 9, perhaps combine helmholtz's exhaust resonant cavity, further reduced the noise, synthesized and realized the real low noise of compressor, satisfy the user and to the compressor low noise requirement.
The utility model discloses under the condition that sound-deadening structure reaches good noise cancelling effect, can reduce the cylinder block volume, avoid making the anechoic chamber on the cylinder block, reduce machining, solve that the geometry is limited, still need parts such as gasket apron screw to form the defect that the anechoic chamber sealed chamber needs to increase the assembly process requirement, energy-conserving material-saving.
Obviously the specific implementation of the present invention is not limited by the above-mentioned manner, and various insubstantial improvements made by the method concept and technical solution of the present invention are all within the protection scope of the present invention.
Claims (5)
1. A noise elimination structure of compressor, includes the casing, its characterized in that: a first partition plate and a second partition plate which divide the shell into a first silencing chamber, a second silencing chamber and a third silencing chamber are arranged in the shell; one end of the shell is provided with an inlet pipe for communicating the first muffling chamber with a coil pipe of the compressor, and the other end of the shell is provided with an outlet pipe for communicating the third muffling chamber with the coil pipe of the compressor; hollow tubes of the communicating device are arranged on the first partition plate and the second partition plate, the inlet ends of the hollow tubes of the communicating device are positioned in the first silencing chamber, and the outlet ends of the hollow tubes of the communicating device are positioned in the third silencing chamber; the middle section of the hollow pipe of the communicator is positioned in the second silencing chamber, an expansion hole is arranged at the position, close to the first partition plate, of the middle section of the hollow pipe of the communicator, a reverse collecting hole is arranged at the position, close to the second partition plate, of the middle section of the hollow pipe of the communicator, and the expansion hole and the reverse collecting hole are respectively positioned on two sides of the hollow pipe of the communicator; or the middle section of the hollow pipe of the communicator is positioned in the second silencing chamber, and a through hole is formed in the middle section of the hollow pipe of the communicator.
2. The compressor sound attenuation structure according to claim 1, wherein: the through hole and the second muffling chamber form a Helmholtz exhaust resonant cavity.
3. The compressor sound attenuation structure according to claim 2, wherein: the resonance frequency of the Helmholtz exhaust resonant cavity can be adjusted by adjusting the area of the through hole of the hollow pipe of the communicator and the volume of the second muffling chamber; eliminating low-frequency noise, increasing the volume of the second silencing chamber, and reducing the sectional area of the through hole; medium frequency noise, etc., to reduce the second muffling chamber and increase the cross-sectional area of the through hole.
4. A sound-deadening structure of a compressor according to any one of claims 1 to 3, wherein: the length of the inlet pipe is one half of that of the first silencing chamber; the length of the outlet pipe is one fourth of the length of the third muffling chamber.
5. The compressor sound attenuation structure according to claim 1, wherein: the interval between the expansion hole and the reverse collecting hole is 8-12 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920814672.4U CN210118237U (en) | 2019-05-31 | 2019-05-31 | Noise elimination structure of compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920814672.4U CN210118237U (en) | 2019-05-31 | 2019-05-31 | Noise elimination structure of compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210118237U true CN210118237U (en) | 2020-02-28 |
Family
ID=69616613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920814672.4U Active CN210118237U (en) | 2019-05-31 | 2019-05-31 | Noise elimination structure of compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210118237U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067733A (en) * | 2019-05-31 | 2019-07-30 | 芜湖欧宝机电有限公司 | A kind of noise elimination structure and its sound reduction method of compressor |
| CN112539467A (en) * | 2020-12-21 | 2021-03-23 | 珠海格力电器股份有限公司 | Machine and air conditioner in air conditioning |
-
2019
- 2019-05-31 CN CN201920814672.4U patent/CN210118237U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067733A (en) * | 2019-05-31 | 2019-07-30 | 芜湖欧宝机电有限公司 | A kind of noise elimination structure and its sound reduction method of compressor |
| CN112539467A (en) * | 2020-12-21 | 2021-03-23 | 珠海格力电器股份有限公司 | Machine and air conditioner in air conditioning |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8016071B1 (en) | Multi-stage low pressure drop muffler | |
| CN107120288B (en) | Exhaust silencer for screw type unit | |
| US2014666A (en) | Muffler | |
| CN110067733A (en) | A kind of noise elimination structure and its sound reduction method of compressor | |
| CN101907009A (en) | Impedance composite water-cooled muffler for diesel generator set | |
| CN210118237U (en) | Noise elimination structure of compressor | |
| CN113357129B (en) | Exhaust noise reduction structure, compressor and refrigeration equipment | |
| CN201953443U (en) | Silencer of large-power diesel engine | |
| CN203584729U (en) | Helmholtz type silencer | |
| CN201539296U (en) | Resistant vehicle exhaust gas silencer | |
| CN213065077U (en) | Labyrinth resonator and pipeline noise elimination device based on same | |
| CN113007068B (en) | Novel suction muffler for refrigerator compressor | |
| CN208057342U (en) | Reciprocating compressor and exhaust assembly thereof | |
| CN217152296U (en) | Exhaust silencing device of automotive scroll compressor and compressor thereof | |
| CN109555586A (en) | Exhaust silencer | |
| CN213743898U (en) | Suction muffler with honeycomb hole structure and compressor | |
| CN102562223B (en) | The automobile exhaust muffler of a kind of modified node method | |
| RU19555U1 (en) | NOISE MUFFLER | |
| CN210637131U (en) | Engine exhaust silencer | |
| WO2021012546A1 (en) | Air conditioner indoor unit | |
| CN2605384Y (en) | Exhaust silencer for internal combustion engine | |
| CN111765086A (en) | Compression pump body assembly, compressor and air conditioner | |
| CN206471117U (en) | A kind of vortex type silencer | |
| CN2611608Y (en) | Novel exhaust silencer of I.C. engine | |
| CN218598327U (en) | Silencer, compressor assembly and household appliance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |