CN110714897A - Silencer and compressor - Google Patents
Silencer and compressor Download PDFInfo
- Publication number
- CN110714897A CN110714897A CN201911012503.XA CN201911012503A CN110714897A CN 110714897 A CN110714897 A CN 110714897A CN 201911012503 A CN201911012503 A CN 201911012503A CN 110714897 A CN110714897 A CN 110714897A
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- China
- Prior art keywords
- flexible
- layer
- silencing
- sound
- silencer
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- Pending
Links
- 230000003584 silencer Effects 0.000 title claims abstract description 34
- 230000030279 gene silencing Effects 0.000 claims abstract description 80
- 239000000463 material Substances 0.000 claims abstract description 23
- 230000001743 silencing effect Effects 0.000 abstract description 5
- 239000003507 refrigerant Substances 0.000 abstract description 4
- 230000003139 buffering effect Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 90
- 238000013016 damping Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000000872 buffer Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0083—Pulsation and noise damping means using blow off silencers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
The invention provides a silencer and a compressor, relates to the technical field of compressors, and solves the technical problem that the existing silencer cannot adjust the volume according to the flow rate of gas exhausted by the compressor. The silencer comprises an air inlet and a flexible silencing layer made of flexible materials, wherein the flexible silencing layer is enclosed into a flexible silencing cavity, and the flexible silencing layer at least covers the air inlet, so that airflow to be silenced enters the flexible silencing cavity from the air inlet. The flexible silencing layer is made of flexible materials, when the flow rate of gas entering the flexible silencing cavity changes, the flexible silencing layer can be expanded or contracted adaptively according to the change of the gas pressure borne by the inner wall of the flexible silencing layer so as to adjust the volume of the flexible silencing cavity, when the gas flow rate is high, the noise is reduced by increasing the volume of the flexible silencing cavity, and when the gas flow rate is low, the energy efficiency is ensured; and the flexible silencing layer made of flexible materials can consume certain energy of the refrigerant when buffering gas, so that a better silencing effect is achieved.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a silencer and a compressor with the silencer.
Background
The existing compressor silencer is a multi-purpose double-layer silencer, namely, the upper layer and the lower layer are arranged for noise elimination layer by layer, and the two layers of silencers are made of rigid materials. Because the flow rate of the variable frequency compressor is high at high frequency, the noise is high, and the requirement on the sound volume is higher; and the velocity of flow is low when the low frequency, and the noise is low, need guarantee the efficiency this moment, current muffler can't do the volume adjustment according to the compressor exhaust gas velocity of flow.
Disclosure of Invention
The invention aims to provide a silencer and a compressor with the silencer, and aims to solve the technical problem that the silencer in the prior art cannot adjust the volume according to the flow rate of gas exhausted by the compressor. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a silencer, which comprises an air inlet and a flexible silencing layer made of flexible materials, wherein the flexible silencing layer is enclosed into a flexible silencing cavity, and the flexible silencing layer at least covers the air inlet, so that airflow to be silenced enters the flexible silencing cavity from the air inlet; the flexible sound-deadening layer can be adaptively expanded or contracted according to the change of the gas pressure borne by the inner wall of the flexible sound-deadening layer so as to adjust the volume of the flexible sound-deadening cavity.
Optionally, the muffler further comprises a rigid sound-deadening layer, and the muffler is connected with the device to be muffled through the rigid sound-deadening layer; the air inlet is arranged on the rigid silencing layer, and the flexible silencing layer is fixed on the outer wall of the rigid silencing layer.
Optionally, the flexible sound damping layer is secured to the outer wall of the rigid sound damping layer by a fastening assembly.
Optionally, the fastening assembly comprises a fastening ring capable of sealingly fastening the flexible sound-deadening layer to the rigid sound-deadening layer.
Optionally, the fastening ring is threadedly connected with the rigid sound attenuating layer.
Optionally, the flexible sound damping layer is sleeved on the rigid sound damping layer in an interference fit manner.
Optionally, the muffler comprises a plurality of sound-attenuating layers.
Optionally, the flexible sound damping layer is located at an outermost layer of the plurality of sound damping layers.
Optionally, the flexible sound damping layer is distributed over the installation surface.
The invention provides a compressor, which comprises a pump body and any one of the silencers.
The invention provides a silencer and a compressor, wherein the silencer comprises a flexible silencing layer made of flexible materials, when the flow rate of gas entering a flexible silencing cavity changes, the flexible silencing layer can be expanded or contracted adaptively according to the change of the gas pressure borne by the inner wall of the flexible silencing layer so as to adjust the volume of the flexible silencing cavity, when the gas flow rate is high, the noise is reduced by increasing the volume of the flexible silencing cavity, and when the gas flow rate is low, the energy efficiency is ensured; and the flexible silencing layer made of flexible materials can consume certain energy of the refrigerant when buffering gas, so that a better silencing effect is achieved.
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 diagram of a first muffler according to an embodiment of the present invention;
FIG. 2 is a schematic view of the muffler of FIG. 1 after being elastically deformed by the pressure of the airflow;
FIG. 3 is a schematic diagram of a second muffler according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a third muffler according to an embodiment of the present invention;
fig. 5 is a schematic view of the structure of the compressor flange.
In the figure 1, a flexible sound-deadening layer; 2. an air inlet; 3. a flexible muffling chamber; 4. a rigid sound damping layer; 5. a fastening ring; 51. fastening the ring skirt; 6. a muffler mounting surface.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
As shown in fig. 1-4, the present invention provides a silencer, which includes an air inlet 2 and a flexible silencing layer 1 made of a flexible material, wherein the flexible silencing layer 1 encloses a flexible silencing cavity 3, and the flexible silencing layer 1 at least covers the air inlet 2, so that an air flow to be silenced enters the flexible silencing cavity 3 from the air inlet 2; the flexible sound-deadening layer 1 can be adaptively expanded or contracted according to the change of the gas pressure to which the inner wall thereof is subjected to adjust the volume of the flexible sound-deadening chamber 3.
The flexible silencing layer 1 is made of flexible materials, when the flow rate of gas entering the flexible silencing cavity 3 changes, the flexible silencing layer 1 can be expanded or contracted adaptively according to the change of the gas pressure borne by the inner wall of the flexible silencing layer to adjust the volume of the flexible silencing cavity 3, when the flow rate of the gas is high, the noise is reduced by increasing the volume of the flexible silencing cavity 3, and when the flow rate of the gas is low, the fluid resistance is small, so that the energy efficiency is ensured; and the flexible sound-deadening layer 1 made of flexible material can consume certain energy of the refrigerant when buffering gas to achieve better sound-deadening effect.
The silencer can be arranged in a single layer, namely, only one flexible silencing layer 1 made of flexible materials is used for wrapping the mounting surface to form a flexible silencing cavity 3.
As an optional embodiment, the silencer further comprises a rigid silencing layer 4, and the silencer is connected with the equipment to be silenced through the rigid silencing layer 4; the air inlet 2 is arranged on the rigid sound-deadening layer 4, and the flexible sound-deadening layer 1 is fixed on the outer wall of the rigid sound-deadening layer 4.
The flexible sound-deadening layer 1 also comprises a rigid sound-deadening layer 4, and the reliability of the connection of the silencer and the compressor pump body is higher.
As shown in fig. 1-3, the silencer includes two silencing layers, the first silencing layer is connected to the pump body and is made of rigid material, the second silencing layer is connected to the first silencing layer and is made of flexible material (high temperature, high pressure and oil resistant material can be selected, fluororubber, PET or PPT and other glass fiber modified material), a vent hole is arranged between the first silencing layer and the second silencing layer as the air inlet 2, compressed air enters the first silencing layer for primary silencing, a part of air is discharged from the pump body channel after resonance silencing, and the other part of air enters the second silencing layer through the vent hole between the first silencing layer and the second silencing layer. When the frequency conversion compressor is in a high frequency state, the gas flow rate is high, the pressure in the second silencing layer (in the flexible silencing cavity 3) is high, the flexible material deforms, the cavity volume is enlarged, the noise is also high at the moment, the silencing effect is good (the larger the volume can be seen according to the following formula, the larger the K value is, the larger the silencing quantity is), and meanwhile, the elastic material deforms to consume a part of gas energy to further reduce the noise. When the frequency compressor is low-frequency, the gas flow velocity is small, the noise is small at the moment, the pressure is small, the flexible material retracts, the cavity volume is reduced, the flow resistance is small, and the energy efficiency can be guaranteed.
ΔL＝10lg(1+2K2)
Where Δ L is the amount of sound deadening, G is the sound transmissivity, V is the volume of the resonant cavity, and S is the cross-sectional area of the orifice into the resonant cavity.
As an alternative embodiment, the flexible sound-deadening layer 1 is fixed to the outer wall of the rigid sound-deadening layer 4 by means of fastening elements.
The fastening assembly is used to improve the reliability of the connection between the flexible sound-deadening layer 1 and the rigid sound-deadening layer 4.
As an alternative embodiment, the fastening assembly comprises a fastening ring 5, the fastening ring 5 being capable of sealingly fastening the flexible sound-damping layer 1 to the rigid sound-damping layer 4. See fig. 1 and 2.
Can adopt double-deck muffler, first layer sheet metal, the second floor is flexible material, and two parts are passed through tighrening ring 5 and are connected tighrening ring 5 and compress tightly a part of flexible material layer under the shirt rim, can guarantee sealedly.
The flexible sound-deadening layer 1 may be provided on the upper side of the rigid sound-deadening layer 4, or may be provided on the periphery of the rigid sound-deadening layer 4 as shown in fig. 4.
As an alternative embodiment, the fastening ring 5 is screwed to the rigid sound-damping layer 4.
The fastening ring 5 is in threaded connection with the rigid sound-deadening layer 4, and the assembly is simple.
As an alternative embodiment, as shown in fig. 3, the flexible sound-deadening layer 1 is sleeved on the rigid sound-deadening layer 4 in an interference fit manner.
Double-deck muffler, first layer sheet metal, the second floor is flexible material, adopts interference fit's mode, utilizes the elasticity dress of the flexible material in second floor on first layer, simple structure, it is convenient to assemble.
As an alternative embodiment, the silencer comprises a plurality of silencing layers.
The silencer can also be provided with a plurality of silencing layers according to requirements, wherein one layer is a flexible silencing layer 1.
As an alternative embodiment, the flexible sound-deadening layer 1 is located at the outermost layer of the multiple sound-deadening layers.
The flexible silencing layer 1 is arranged on the outermost layer, and can change the silencing volume to the maximum extent.
As an alternative embodiment, the flexible sound-deadening layer 1 is distributed over its mounting surface.
The flexible sound-deadening layer 1 can be distributed on the mounting surface or can be local and only covers the periphery of the air inlet 2, and the silencer mounting surface 6 on the flange is shown in figure 5.
The invention provides a compressor, which comprises a pump body and any one of the above silencers.
Through the flexible silencing layer 1, the silencer deforms when the flow velocity is different, the volume of a silencing cavity is changed, the silencing effect is better when the flow velocity is high, and the energy efficiency is ensured when the flow velocity is low; and when the flexible material buffers gas, certain energy of the refrigerant is consumed to achieve a better silencing effect.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A silencer is characterized by comprising an air inlet (2) and a flexible silencing layer (1) made of flexible materials, wherein the flexible silencing layer (1) is enclosed to form a flexible silencing cavity (3), and the flexible silencing layer (1) at least covers the air inlet (2), so that air flow to be silenced enters the flexible silencing cavity (3) from the air inlet (2); the flexible sound-deadening layer (1) can be expanded or contracted adaptively according to the change of gas pressure borne by the inner wall of the flexible sound-deadening layer so as to adjust the volume of the flexible sound-deadening cavity (3).
2. A silencer according to claim 1, characterized by further comprising a rigid sound-deadening layer (4), the silencer being connected to the equipment to be silenced by means of the rigid sound-deadening layer (4); the air inlet (2) is arranged on the rigid silencing layer (4), and the flexible silencing layer (1) is fixed on the outer wall of the rigid silencing layer (4).
3. A silencer according to claim 2, characterized in that the flexible silencing layer (1) is fixed to the outer wall of the rigid silencing layer (4) by fastening means.
4. A silencer according to claim 3, characterized in that the fastening assembly comprises a fastening ring (5), which fastening ring (5) is capable of sealingly fastening the flexible sound-deadening layer (1) to the rigid sound-deadening layer.
5. A silencer according to claim 4, characterized in that the fastening ring (5) is screwed to the rigid silencing layer (4).
6. A silencer according to claim 2, characterized in that the flexible silencing layer (1) is sleeved to the rigid silencing layer (4) in an interference fit.
7. The muffler of claim 1, comprising a plurality of muffling layers.
8. A silencer according to claim 7, characterized in that the flexible silencing layer (1) is located at the outermost layer of a multilayer silencing layer.
9. A silencer according to claim 1, characterized in that the flexible silencing layer (1) is distributed over its mounting surface.
10. A compressor comprising a pump body and a muffler as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911012503.XA CN110714897A (en) | 2019-10-23 | 2019-10-23 | Silencer and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911012503.XA CN110714897A (en) | 2019-10-23 | 2019-10-23 | Silencer and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110714897A true CN110714897A (en) | 2020-01-21 |
Family
ID=69213164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911012503.XA Pending CN110714897A (en) | 2019-10-23 | 2019-10-23 | Silencer and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110714897A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198281A (en) * | 2021-12-14 | 2022-03-18 | 珠海凌达压缩机有限公司 | Amortization structure, compressor and air conditioner |
-
2019
- 2019-10-23 CN CN201911012503.XA patent/CN110714897A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198281A (en) * | 2021-12-14 | 2022-03-18 | 珠海凌达压缩机有限公司 | Amortization structure, compressor and air conditioner |
| CN114198281B (en) * | 2021-12-14 | 2023-09-29 | 珠海凌达压缩机有限公司 | Amortization structure, compressor and air conditioner |
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