CN113771593A - Multi-stage noise elimination structure of rotary vane type compressor shell of air conditioner for vehicle - Google Patents
Multi-stage noise elimination structure of rotary vane type compressor shell of air conditioner for vehicle Download PDFInfo
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- CN113771593A CN113771593A CN202111148665.3A CN202111148665A CN113771593A CN 113771593 A CN113771593 A CN 113771593A CN 202111148665 A CN202111148665 A CN 202111148665A CN 113771593 A CN113771593 A CN 113771593A
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- 230000008030 elimination Effects 0.000 title claims abstract description 44
- 238000003379 elimination reaction Methods 0.000 title claims abstract description 44
- 230000030279 gene silencing Effects 0.000 claims abstract description 41
- 230000005540 biological transmission Effects 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims description 24
- 238000005192 partition Methods 0.000 claims description 21
- 238000009434 installation Methods 0.000 claims description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 11
- 230000000694 effects Effects 0.000 abstract description 9
- 230000001603 reducing effect Effects 0.000 abstract description 4
- 238000013016 damping Methods 0.000 description 3
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3229—Cooling devices using compression characterised by constructional features, e.g. housings, mountings, conversion systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
- F04C29/068—Silencing the silencing means being arranged inside the pump housing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention relates to the technical field of compressor noise reduction, in particular to a multistage noise elimination structure of a rotary vane compressor shell of a vehicle air conditioner, a first clapboard is connected with a first inner cavity air passage of the shell and is provided with a first exhaust hole, a first low-frequency resonance noise elimination cavity comprises a support boss and a noise elimination cavity body, the support boss is connected with the shell, the noise elimination cavity body is connected with the support boss, an expansion pipe type noise elimination cavity comprises an incident sound wave band, a reflection sound wave band and a transmission sound wave band, the incident sound wave band is connected with the shell, the reflection sound wave band is connected with the incident sound wave band, the transmission sound wave band is connected with the reflection sound wave band, heat generated by the work of the compressor enters the noise elimination cavity body from the first exhaust hole of the first clapboard through the support boss to eliminate partial noise, then enters the incident sound wave section through the first inner cavity air passage and then enters the reflected sound wave section, and the reflected sound wave section blocks the noise, thereby solving the problem that the effect of reducing the pneumatic noise of the primary silencing cavity formed by assembly is poor.
Description
Technical Field
The invention relates to the technical field of compressor noise reduction, in particular to a multistage noise elimination structure of a rotary vane type compressor shell of an air conditioner for a vehicle.
Background
The gas (refrigerant) as the working medium of the compressor can flow in the gas passages with different structural shapes in the compressor and flow in a sine change mode along with different rotating speeds of the compressor, and because the rotating speed of the compressor is generally high, pneumatic noise inevitably exists, squeaking can be generated in certain occasions to cause vibration of a system pipeline, finally, the comfort level is reduced, a serious person causes resonance of the system pipeline, the service life of the pipeline is shortened, and the gas leakage probability of the pipeline connecting part is increased.
The requirement on NVH noise control of the compressor in the market is higher and higher, the NVH noise control is influenced by the compact structure and the mature technology of the compressor, a compressor manufacturer can only passively deal with the NVH problem by selecting different parts to be combined and matched, active noise reduction measures are lacked fundamentally, active noise reduction difficulty is higher, and an effective active control means is lacked for the NVH problem with high requirement at present.
Currently, there is no specific muffling treatment of the noise generated by the gas flow inside the compressor shell. Although the interior of the pneumatic noise reduction chamber is provided with a primary noise reduction chamber due to the structure and the assembly relationship, the noise reduction chamber is completely formed naturally by the assembly relationship among parts, and is designed in an inactive noise reduction mode, and the chamber is influenced by the space of the structure and the parts, so that the pneumatic noise reduction effect is very limited.
Disclosure of Invention
The invention aims to provide a multistage noise elimination structure of a rotary vane compressor shell of an air conditioner for a vehicle, and aims to solve the problem that a first-stage noise elimination cavity formed by assembly is poor in pneumatic noise reduction effect.
In order to achieve the aim, the invention provides a multistage noise elimination structure of a rotary vane compressor shell of an air conditioner for a vehicle, which comprises an installation mechanism and a noise elimination mechanism;
the silencing mechanism comprises a shell, a first partition plate, a first low-frequency resonance silencing cavity and an expansion pipe type silencing cavity, the shell is provided with a first inner cavity air passage, the first partition plate is fixedly connected with the shell and positioned on the inner side wall of the first inner cavity air passage, the first partition plate is provided with a first exhaust hole, the first low-frequency resonance silencing cavity is fixedly connected with the shell and penetrates through the shell, the expansion pipe type silencing cavity is fixedly connected with the shell and penetrates through the shell, and the mounting mechanism is fixedly connected with the shell and positioned on one side of the shell;
the first low-frequency resonance silencing cavity comprises a support boss and a silencing cavity body, the support boss is fixedly connected with the shell and penetrates through the shell, and the silencing cavity body is fixedly connected with the support boss and is positioned on one side far away from the shell;
the expansion pipe type muffling cavity comprises an incident acoustic wave band, a reflection acoustic wave band and a transmission acoustic wave band, wherein the incident acoustic wave band is fixedly connected with the shell and penetrates through the shell, the reflection acoustic wave band is fixedly connected with the incident acoustic wave band and is positioned on one side far away from the shell, the transmission acoustic wave band is fixedly connected with the reflection acoustic wave band and is positioned on one side far away from the incident acoustic wave band, the cross section of the transmission acoustic wave band is larger than that of the incident acoustic wave band, and the cross section of the reflection acoustic wave band is larger than that of the incident acoustic wave band and that of the transmission acoustic wave band.
The compressor is installed in the housing of the noise elimination mechanism, the housing is fixedly installed through the installation mechanism, when the compressor works, heat generated by the compressor enters the noise elimination cavity body from the first exhaust hole of the first partition plate on the first inner cavity air passage through the support boss of the first low-frequency resonance noise elimination cavity, and after the noise elimination cavity body is overlapped with the frequency section of the gas part, the gas generates resonance in the noise elimination cavity body, so that the pneumatic noise of the low-frequency section of the gas part is eliminated, and the noise elimination effect is achieved. Then the gas enters the incident acoustic wave band of the expansion pipe type muffling cavity through the first inner cavity air passage, and suddenly enters the reflection acoustic wave band from a smaller space of the incident acoustic wave band, acoustic impedance in the channel suddenly changes due to sudden expansion of the cross section of the reflection acoustic wave band, so that acoustic waves with certain frequencies in the reflection acoustic wave band are reflected back to a sound source without passing through the space, and the acoustic waves cannot be transmitted out without passing through the reflection acoustic wave band, so that the purpose of muffling is achieved, the transmission acoustic wave band is externally connected with a system pipeline, and the gas with the muffled reflection acoustic wave band flows into the system pipeline through the transmission acoustic wave band.
The first low-frequency resonance silencing cavity further comprises a reinforcing rib, one side of the reinforcing rib is fixedly connected with the silencing cavity body, and the other side of the reinforcing rib is fixedly connected with the shell and located on the outer side wall of the supporting boss.
The reinforcing ribs increase the hardness of the supporting boss, so that the stability of the anechoic cavity body is increased.
The silencing mechanism further comprises a second partition plate and a second low-frequency resonance silencing cavity, the shell is further provided with a second inner cavity air passage, the second partition plate is fixedly connected with the shell and located on the inner side wall of the second inner cavity air passage, the second inner cavity air passage is provided with a second exhaust hole, and the second low-frequency resonance silencing cavity is fixedly connected with the shell and penetrates through the shell.
The heat generated by the compressor during working can enter the second low-frequency resonance silencing cavity from the second exhaust hole on the second partition plate on the second inner cavity air passage for noise reduction, and the second low-frequency resonance silencing cavity and the first low-frequency resonance silencing cavity have the same structure.
Wherein, installation mechanism includes urceolus, a plurality of buffer spring, inner tube and a plurality of fixed subassembly, the urceolus with shell fixed connection, and be located one side of shell, it is a plurality of buffer spring respectively with urceolus fixed connection all is located inside the urceolus, the inner tube with a plurality of buffer spring fixed connection all runs through the urceolus, a plurality of fixed subassembly respectively with urceolus sliding connection all runs through the urceolus with the inner tube.
Through installation mechanism installation during the shell, will inner tube and stationary plane contact, and the extrusion the inner tube, until the inner tube slides in completely in the urceolus, then through fixed subassembly will the urceolus is fixed on the stationary plane, the urceolus with between the inner tube buffer spring can be right the produced vibrations of gas in the shell when flowing cushion, thereby increase the stability of shell, and then increase the stability of the link of transmission acoustic wave section and external system pipeline.
The mounting mechanism further comprises a first sealing gasket, and the first sealing gasket is fixedly connected with the inner barrel and is positioned on one side far away from the buffer spring.
The first sealing gasket is used for filling a gap between the inner cylinder and the fixing surface and increasing the sealing property of the shell.
The mounting mechanism further comprises a second sealing gasket, and the second sealing gasket is fixedly connected with the inner barrel and is positioned on one side far away from the first sealing gasket.
The second sealing gasket is used for filling a gap between the inner cylinder and the outer cylinder, and the sealing performance of the shell is further improved.
The mounting mechanism further comprises a limiting block, and the limiting block is fixedly connected with the inner barrel and is located inside the outer barrel.
The diameter of the limiting block is larger than the caliber of the outer barrel, so that the situation that the inner barrel is ejected out of the inner barrel by the buffer spring before the inner barrel is not in contact with a fixed surface can be avoided.
According to the multistage noise elimination structure for the rotary vane compressor shell of the vehicle air conditioner, the compressor is installed in the shell of the noise elimination mechanism, the shell is fixedly installed through the installation mechanism, when heat generated by the compressor during operation enters the noise elimination cavity body from the first exhaust hole of the first partition plate on the first inner cavity air passage through the support boss of the first low-frequency resonance noise elimination cavity, and after the noise elimination cavity body is overlapped with the frequency section of the gas part, the gas generates resonance in the noise elimination cavity body, so that the pneumatic noise of the low-frequency section of the gas part is eliminated, and the noise elimination effect is achieved. Then the gas enters the incident sound wave band of the expansion pipe type muffling cavity through the first inner cavity air passage, and suddenly enters the reflection sound wave band from a smaller space of the incident sound wave band, sound waves with certain frequencies in the reflection sound wave band cannot be reflected back to a sound source through the space due to sudden acoustic impedance mutation caused by sudden expansion of the cross section of the reflection sound wave band, and cannot be transmitted out due to the fact that the sound waves cannot pass through the reflection sound wave band, so that the aim of muffling is achieved, the transmission sound wave band is externally connected with a system pipeline, the gas after the sound attenuation of the reflection sound wave band flows into the system pipeline through the transmission sound wave band, and the problem that the effect of reducing the pneumatic noise of a primary muffling cavity formed through assembly is poor is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a multi-stage noise-damping structure of a casing of a rotary vane compressor of an air conditioner for a vehicle, provided by the invention;
FIG. 2 is a side view of the multi-stage sound damping structure of the outer shell of the rotary vane compressor of the air conditioner for the vehicle provided by the invention;
FIG. 3 is a sectional view of the multi-stage muffling structure of the rotary vane compressor housing of the vehicle air conditioner provided by the present invention, taken along the direction of the first low-frequency resonance muffling chamber;
FIG. 4 is a sectional view of the multi-stage muffling structure of the rotary vane compressor housing of the vehicle air conditioner provided by the present invention, taken along the direction of the expansion pipe type muffling chamber;
FIG. 5 is an enlarged view of detail A of FIG. 4;
FIG. 6 is a cross-sectional view of the outer cartridge, inner cartridge, first seal and fixing assembly.
Reference numerals: 1-mounting mechanism, 2-silencing mechanism, 3-housing, 4-first lumen airway, 5-first clapboard, 6-first exhaust hole, 7-first low-frequency resonance silencing cavity, 8-expanding tube silencing cavity, 9-supporting boss, 10-silencing cavity body, 11-incident sound wave band, 12-reflected sound wave band, 13-transmitted sound wave band, 14-second lumen airway, 15-second clapboard, 16-second exhaust hole, 17-second low-frequency resonance silencing cavity, 18-reinforcing rib, 19-outer cylinder, 20-buffer spring, 21-inner cylinder, 22-fixing component, 23-first sealing gasket, 24-second sealing gasket, 25-limiting block, 26-threaded rod, 27-sliding rod, 28-stop, 29-cushion.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 6, the present invention provides a multi-stage noise elimination structure for a casing of a rotary vane compressor of an air conditioner for a vehicle, which includes an installation mechanism 1 and a noise elimination mechanism 2;
the silencing mechanism 2 comprises a shell 3, a first partition plate 5, a first low-frequency resonance silencing cavity 7 and an expansion pipe type silencing cavity 8, wherein the shell 3 is provided with a first inner cavity air passage 4, the first partition plate 5 is fixedly connected with the shell 3 and is positioned on the inner side wall of the first inner cavity air passage 4, the first partition plate 5 is provided with a first exhaust hole 6, the first low-frequency resonance silencing cavity 7 is fixedly connected with the shell 3 and penetrates through the shell 3, the expansion pipe type silencing cavity 8 is fixedly connected with the shell 3 and penetrates through the shell 3, and the mounting mechanism 1 is fixedly connected with the shell 3 and is positioned on one side of the shell 3;
the first low-frequency resonance muffling cavity 7 comprises a supporting boss 9 and a muffling cavity body 10, the supporting boss 9 is fixedly connected with the shell 3 and penetrates through the shell 3, and the muffling cavity body 10 is fixedly connected with the supporting boss 9 and is positioned on one side far away from the shell 3;
the expansion pipe type muffling cavity 8 comprises an incident acoustic wave band 11, a reflection acoustic wave band 12 and a transmission acoustic wave band 13, wherein the incident acoustic wave band 11 is fixedly connected with the shell 3 and penetrates through the shell 3, the reflection acoustic wave band 12 is fixedly connected with the incident acoustic wave band 11 and is positioned on one side far away from the shell 3, the transmission acoustic wave band 13 is fixedly connected with the reflection acoustic wave band 12 and is positioned on one side far away from the incident acoustic wave band 11, the cross section of the transmission acoustic wave band 13 is larger than that of the incident acoustic wave band 11, and the cross section of the reflection acoustic wave band 12 is larger than that of the incident acoustic wave band 11 and that of the transmission acoustic wave band 13.
In this embodiment, a compressor is installed in the housing 3 of the muffler mechanism 2, the housing 3 is fixedly installed by the installation mechanism 1, when heat generated during operation of the compressor enters the muffler chamber body 10 from the first exhaust hole 6 of the first partition plate 5 on the first inner gas duct 4 through the support boss 9 of the first low-frequency resonance muffler chamber 7, and after the muffler chamber body 10 is overlapped with the frequency band of the gas part, the gas resonates in the muffler chamber body 10 to eliminate the aerodynamic noise of the low-frequency band of the gas part, so as to achieve the effect of noise elimination, and then the gas enters the incident sound wave band 11 of the expanded pipe type muffler chamber 8 through the first inner gas duct 4 and suddenly enters the reflected sound wave band 12 from the smaller space of the incident sound wave band 11, so that the sudden expansion of the section of the reflected sound wave band 12 causes a sudden change in the passage, the sound wave with certain frequency in the reflection sound wave band 12 can not pass through the space, so that the sound source is reflected back, and the sound wave can not be transmitted out due to the fact that the sound wave can not pass through the reflection sound wave band 12, so that the purpose of noise elimination is achieved, the transmission sound wave band 13 is externally connected with a system pipeline, and the gas after the noise elimination of the reflection sound wave band 12 flows into the system pipeline through the transmission sound wave band 13, so that the problem that the pneumatic noise reducing effect of a primary noise eliminating cavity formed by assembly is poor is solved.
Further, the first low-frequency resonance muffling cavity 7 further comprises a reinforcing rib 18, one side of the reinforcing rib 18 is fixedly connected with the muffling cavity body 10, and the other side of the reinforcing rib 18 is fixedly connected with the shell 3 and is located on the outer side wall of the supporting boss 9; the silencing mechanism 2 further comprises a second partition plate 15 and a second low-frequency resonance silencing cavity 17, the shell 3 is further provided with a second inner cavity air passage 14, the second partition plate 15 is fixedly connected with the shell 3 and is positioned on the inner side wall of the second inner cavity air passage 14, the second inner cavity air passage 14 is provided with a second exhaust hole 16, and the second low-frequency resonance silencing cavity 17 is fixedly connected with the shell 3 and penetrates through the shell 3.
In this embodiment, the reinforcing rib 18 increases the rigidity of the supporting boss 9, so as to increase the stability of the muffling chamber body 10, and the heat generated during the operation of the compressor can also enter the second low-frequency resonance muffling chamber 17 from the second exhaust hole 16 of the second partition plate 15 on the second inner cavity air flue 14 for noise reduction, and the second low-frequency resonance muffling chamber 17 has the same structure as the first low-frequency resonance muffling chamber 7.
Further, the mounting mechanism 1 comprises an outer cylinder 19, a plurality of buffer springs 20, an inner cylinder 21 and a plurality of fixing components 22, wherein the outer cylinder 19 is fixedly connected with the housing 3 and is positioned at one side of the housing 3, the plurality of buffer springs 20 are respectively fixedly connected with the outer cylinder 19 and are all positioned inside the outer cylinder 19, the inner cylinder 21 is fixedly connected with the plurality of buffer springs 20 and all penetrate through the outer cylinder 19, and the plurality of fixing components 22 are respectively in sliding connection with the outer cylinder 19 and all penetrate through the outer cylinder 19 and the inner cylinder 21; the mounting mechanism 1 further comprises a first sealing gasket 23, wherein the first sealing gasket 23 is fixedly connected with the inner cylinder 21 and is positioned on one side far away from the buffer spring 20; the mounting mechanism 1 further comprises a second sealing gasket 24, wherein the second sealing gasket 24 is fixedly connected with the inner cylinder 21 and is positioned on one side far away from the first sealing gasket 23; the mounting mechanism 1 further comprises a limiting block 25, wherein the limiting block 25 is fixedly connected with the inner cylinder 21 and is positioned inside the outer cylinder 19.
In this embodiment, when the housing 3 is installed by the installation mechanism 1, the inner cylinder 21 is in contact with a fixed surface, and the inner cylinder 21 is pressed until the inner cylinder 21 completely slides into the outer cylinder 19, and then the outer cylinder 19 is fixed on the fixed surface by the fixing component 22, the buffer spring 20 between the outer cylinder 19 and the inner cylinder 21 can buffer the vibration generated when the gas in the housing 3 flows, so as to increase the stability of the housing 3, and further increase the stability of the connection end of the transmission acoustic wave band 13 and the external system pipeline, the first sealing gasket 23 is used for filling the gap between the inner cylinder 21 and the fixed surface, the second sealing gasket 24 is used for filling the gap between the inner cylinder 21 and the outer cylinder 19, and increase the sealing performance of the housing 3, the diameter of the limiting block 25 is larger than the caliber of the outer cylinder 19, the buffer spring 20 can prevent the inner cylinder 21 from being pushed out of the outer cylinder 19 by the inner cylinder 21 before the inner cylinder 21 is not in contact with a fixed surface.
Further, the fixing component 22 includes a sliding rod 27, a threaded rod 26 and a stopper 28, the sliding rod 27 is slidably connected with the outer cylinder 19 and penetrates through the outer cylinder 19 and the inner cylinder 21, the threaded rod 26 is fixedly connected with the sliding rod 27 and is located on one side of the sliding rod 27, and the stopper 28 is fixedly connected with the sliding rod 27 and is located on one side far away from the threaded rod 26.
In this embodiment, the sliding rod 27 is fixed on the fixing surface by the threaded rod 26, the outer cylinder 19 slides on the inner cylinder 21 by the sliding rod 27 according to the expansion and contraction condition of the buffer spring 20 during damping, and the stopper 28 prevents the outer cylinder 19 from sliding off the sliding rod 27.
Further, the fixing assembly 22 further comprises a cushion 29, and the cushion 29 is fixedly connected with the stopper 28 and is located at a side close to the outer cylinder 19.
In the present embodiment, the cushion pad 29 can cushion the pressure between the outer cylinder 19 and the stopper 28, and prevent the stopper 28 from applying an excessive pressure to the outer cylinder 19 to damage the outer cylinder 19.
The invention relates to a multistage noise elimination structure of a rotary vane compressor shell of a vehicle air conditioner, wherein the compressor is arranged in the shell 3 of a noise elimination mechanism 2, the shell 3 is fixedly arranged through an installation mechanism 1, when the compressor works, the generated heat enters a noise elimination cavity body 10 from a first exhaust hole 6 of a first partition plate 5 on a first inner cavity air passage 4 through a support boss 9 of a first low-frequency resonance noise elimination cavity 7, after the noise elimination cavity body 10 is overlapped with the frequency section of a gas part, the gas generates resonance in the noise elimination cavity body 10 to eliminate the pneumatic noise of the low-frequency section of the gas part and achieve the noise elimination effect, then the gas enters an incident sound wave band 11 of an expansion pipe type noise elimination cavity 8 through the first inner cavity air passage 4 and suddenly enters a reflection sound wave band 12 from the smaller space of the incident sound wave band 11, the sudden expansion of the cross section of the reflected acoustic wave band 12 causes the acoustic impedance in the channel to suddenly change, so that acoustic waves with certain frequencies in the reflected acoustic wave band 12 cannot pass through the space, a sound source is reflected back, the acoustic waves cannot pass through the reflected acoustic wave band 12 and cannot be transmitted out, and the purpose of noise elimination is achieved, the transmission acoustic wave band 13 is externally connected with a system pipeline, gas after the noise elimination of the reflected acoustic wave band 12 flows into the system pipeline through the transmission acoustic wave band 13, and the problem that the effect of reducing the pneumatic noise of a primary noise elimination cavity formed by assembly is poor is solved.
While the above disclosure has been described in terms of a preferred embodiment of the multi-stage muffling structure for the outer shell of the rotary vane compressor of the vehicle air conditioner, it will be understood by those skilled in the art that the present invention is not limited thereto, and that all or part of the process flow of the above embodiment can be implemented and equivalents thereof can be made according to the claims of the present invention.
Claims (7)
1. The multistage noise elimination structure of the rotary vane compressor shell of the vehicle air conditioner is characterized by comprising an installation mechanism and a noise elimination mechanism;
the silencing mechanism comprises a shell, a first partition plate, a first low-frequency resonance silencing cavity and an expansion pipe type silencing cavity, the shell is provided with a first inner cavity air passage, the first partition plate is fixedly connected with the shell and positioned on the inner side wall of the first inner cavity air passage, the first partition plate is provided with a first exhaust hole, the first low-frequency resonance silencing cavity is fixedly connected with the shell and penetrates through the shell, the expansion pipe type silencing cavity is fixedly connected with the shell and penetrates through the shell, and the mounting mechanism is fixedly connected with the shell and positioned on one side of the shell;
the first low-frequency resonance silencing cavity comprises a support boss and a silencing cavity body, the support boss is fixedly connected with the shell and penetrates through the shell, and the silencing cavity body is fixedly connected with the support boss and is positioned on one side far away from the shell;
the expansion pipe type muffling cavity comprises an incident acoustic wave band, a reflection acoustic wave band and a transmission acoustic wave band, wherein the incident acoustic wave band is fixedly connected with the shell and penetrates through the shell, the reflection acoustic wave band is fixedly connected with the incident acoustic wave band and is positioned on one side far away from the shell, the transmission acoustic wave band is fixedly connected with the reflection acoustic wave band and is positioned on one side far away from the incident acoustic wave band, the cross section of the transmission acoustic wave band is larger than that of the incident acoustic wave band, and the cross section of the reflection acoustic wave band is larger than that of the incident acoustic wave band and that of the transmission acoustic wave band.
2. The multistage noise reduction structure of a casing of a vane type compressor for a vehicle air conditioner according to claim 1,
the first low-frequency resonance silencing cavity further comprises a reinforcing rib, one side of the reinforcing rib is fixedly connected with the silencing cavity body, and the other side of the reinforcing rib is fixedly connected with the shell and located on the outer side wall of the supporting boss.
3. The multistage noise reduction structure of a casing of a vane type compressor for a vehicle air conditioner according to claim 1,
the silencing mechanism further comprises a second partition plate and a second low-frequency resonance silencing cavity, the shell is further provided with a second inner cavity air passage, the second partition plate is fixedly connected with the shell and located on the inner side wall of the second inner cavity air passage, the second inner cavity air passage is provided with a second exhaust hole, and the second low-frequency resonance silencing cavity is fixedly connected with the shell and penetrates through the shell.
4. The multistage noise reduction structure of a casing of a vane type compressor for a vehicle air conditioner according to claim 1,
installation mechanism includes urceolus, a plurality of buffer spring, inner tube and a plurality of fixed subassembly, the urceolus with shell fixed connection, and be located one side of shell, it is a plurality of buffer spring respectively with urceolus fixed connection all is located inside the urceolus, the inner tube with a plurality of buffer spring fixed connection all runs through the urceolus, a plurality of fixed subassembly respectively with urceolus sliding connection all runs through the urceolus with the inner tube.
5. The multistage noise reduction structure of a casing of a vane type compressor for a vehicle air conditioner according to claim 4,
the mounting mechanism further comprises a first sealing gasket, and the first sealing gasket is fixedly connected with the inner barrel and is positioned on one side far away from the buffer spring.
6. The multistage noise reduction structure of a casing of a vane type compressor for a vehicle air conditioner according to claim 5,
the mounting mechanism further comprises a second sealing gasket, and the second sealing gasket is fixedly connected with the inner barrel and is positioned on one side far away from the first sealing gasket.
7. The multistage noise reduction structure of a casing of a vane type compressor for a vehicle air conditioner according to claim 4,
the mounting mechanism further comprises a limiting block, and the limiting block is fixedly connected with the inner barrel and is located inside the outer barrel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111148665.3A CN113771593A (en) | 2021-09-27 | 2021-09-27 | Multi-stage noise elimination structure of rotary vane type compressor shell of air conditioner for vehicle |
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| CN202111148665.3A CN113771593A (en) | 2021-09-27 | 2021-09-27 | Multi-stage noise elimination structure of rotary vane type compressor shell of air conditioner for vehicle |
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| CN207500018U (en) * | 2017-07-19 | 2018-06-15 | 北京汽车股份有限公司 | Automobile air inlet system combination silencing apparatus, automobile air inlet system and automobile |
| CN208184916U (en) * | 2018-05-15 | 2018-12-04 | 江西汉诺斯压缩机科技有限公司 | A kind of piston compressor |
| CN109341052A (en) * | 2018-10-18 | 2019-02-15 | 广东美的制冷设备有限公司 | Silencer for air conditioner and air conditioner |
| CN113007069A (en) * | 2020-06-10 | 2021-06-22 | 黄石东贝压缩机有限公司 | Air suction silencing cavity with buffer device |
| CN213931179U (en) * | 2020-10-28 | 2021-08-10 | 佛山市万物互联科技有限公司 | Air conditioner silencer and air conditioner |
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2021
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| CN113007069A (en) * | 2020-06-10 | 2021-06-22 | 黄石东贝压缩机有限公司 | Air suction silencing cavity with buffer device |
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Application publication date: 20211210 |