CN217685832U - Silencer and air conditioner with same - Google Patents
Silencer and air conditioner with same Download PDFInfo
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- CN217685832U CN217685832U CN202221298269.9U CN202221298269U CN217685832U CN 217685832 U CN217685832 U CN 217685832U CN 202221298269 U CN202221298269 U CN 202221298269U CN 217685832 U CN217685832 U CN 217685832U
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Abstract
The utility model provides a silencer and have its air conditioner, this silencer includes: the pipe section that is located the muffler pipe at second expansion chamber both ends all stretch into to the second at least partially expands the chamber. The utility model has the advantages that can increase the noise elimination volume, improve the noise elimination effect of silencer.
Description
Technical Field
The utility model relates to an air conditioning field especially relates to a silencer and have its air conditioner.
Background
With the continuous development of science and technology and the continuous improvement of living standard, users also put higher demands on the comfort of the air conditioner, such as the reduction of the working noise of the air conditioner. At present, the most commonly used muffler in the air conditioning pipeline system is a single expansion cavity type muffler, which can reduce indoor sound transmission to a certain extent, but the maximum sound attenuation amount of the muffler in the concerned 450Hz-1500Hz frequency band is fixed, so that the noise attenuation effect of the muffler on the noise of the air conditioner in the 450Hz-1500Hz frequency band is poor, and therefore, the improvement is still needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to increase the bandwidth of the noise elimination volume and noise elimination frequency band.
The utility model discloses a further purpose of first aspect is to improve the noise elimination effect of silencer in well low frequency range.
The utility model discloses the purpose of second aspect provides an air conditioner.
In particular, according to a first aspect of the present invention, the present invention provides a muffler, comprising: the pipe section that is located the silencing pipe at second expansion chamber both ends all stretches into to the second at least partially and expands the chamber.
Optionally, the length of the pipe section of the silencing pipe between the second expansion cavity and the first expansion cavity in the second expansion cavity is a first length;
the extending length of the pipe section of the silencing pipe between the second expansion cavity and the third expansion cavity in the second expansion cavity is a second length; and is
The first length is greater than the second length.
Optionally, the first length is 1/4-1/2 of the length of the second expansion cavity;
the second length is 1/8-1/4 of the length of the second expansion cavity.
Optionally, the first expansion cavity, the second expansion cavity, the third expansion cavity and the fourth expansion cavity are coaxially arranged with the pipe body of the muffling pipe.
Optionally, the length of the first expansion lumen, the length of the second expansion lumen, the length of the third expansion lumen, and the length of the fourth expansion lumen are identical.
Optionally, the diameter of the first expansion lumen, the diameter of the second expansion lumen, the diameter of the third expansion lumen, and the diameter of the fourth expansion lumen are not all the same.
Optionally, the diameter of the first expansion lumen is the same as the diameter of the fourth expansion lumen; and is
The diameter of the second expansion chamber is the same as the diameter of the third expansion chamber.
Optionally, the first expansion lumen has a diameter less than a diameter of the second expansion lumen.
Optionally, the diameter of the first expansion cavity is 1.5 to 2.5 times the inner diameter of the muffling tube;
the diameter of the second expansion cavity is 2.0-3.0 times of the inner diameter of the silencing tube.
According to the utility model discloses a second aspect, the utility model provides an air conditioner, including compression refrigeration cycle system, install arbitrary silencer in the aforesaid in compression refrigeration cycle system's the fluid path.
The utility model discloses a silencer, its first expansion chamber, second expansion chamber, third expansion chamber and fourth expansion chamber are arranged along the inlet end to the exhaust end of muffler pipe in proper order, utilize the acoustic impedance change of the sectional area sudden change of each cavity, can interfere the noise of each frequency channel within range effectively to the noise elimination volume of increase silencer improves the noise elimination effect of silencer. Besides, the pipe sections of the silencing pipes positioned at the two ends of the second expansion cavity extend into the second expansion cavity, so that the silencing frequency band of the silencer can be increased, and the silencer can effectively silence noise in a wider frequency band.
Further, the utility model discloses the silencer, its pipeline section that is located the muffler pipe between second expansion chamber and the first expansion chamber stretches into length for first length in second expansion intracavity, and the pipeline section that is located the muffler pipe between second expansion chamber and the third expansion chamber stretches into length for the second length in second expansion intracavity, and first length is greater than second length. The arrangement mode is beneficial to improving the noise elimination quantity of the silencer in the range of the middle and low frequency bands, so that the noise elimination effect of the silencer in the range of the middle and low frequency bands is better.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a muffler according to an embodiment of the present invention;
fig. 3 is a cross-sectional view of a muffler according to an embodiment of the present invention;
fig. 4 is a graph showing the sound attenuation transmission loss of three different structures of the muffler.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The utility model discloses at first provide an air conditioner 10, fig. 1 is according to the utility model discloses an embodiment's structural schematic diagram of air conditioner 10, refer to fig. 1, this air conditioner 10 can be split type air conditioner 10, can include indoor set 110, off-premises station 120 and compression refrigeration cycle system 200 generally, wherein compression refrigeration cycle system 200 part is located in off-premises station 120 of air conditioner 10, it includes parts such as compressor 210, heat exchanger 220, refrigerant pipeline 230 at least, because compression refrigeration cycle system 200's theory of operation is known for technical staff in the field, therefore no longer gives details here.
The air conditioner 10 of the present invention further includes a muffler 300, which can be installed in the fluid path of the compression refrigeration cycle system 200. Specifically, the muffler 300 may be installed between the discharge end of the compressor 210 and any one of the heat exchangers 220.
Fig. 2 is a schematic structural diagram of a muffler 300 according to an embodiment of the present invention, fig. 3 is a cross-sectional view of the muffler 300 according to an embodiment of the present invention, referring to fig. 2 and 3, the muffler 300 may include a muffling pipe 310, one end of the muffling pipe 310 is an air inlet 311, the other end of the muffling pipe is an air outlet 312, the muffling pipe 310 is formed with a first expansion chamber 320, a second expansion chamber 330, a third expansion chamber 340 and a fourth expansion chamber 350, which are sequentially arranged along a direction from the air inlet 311 to the air outlet 312, wherein pipe sections of the muffling pipe 310 at both ends of the second expansion chamber 330 each at least partially extend into the second expansion chamber 330.
The utility model discloses silencer 300, its first expansion chamber 320, second expansion chamber 330, third expansion chamber 340 and fourth expansion chamber 350 arrange in proper order along muffler pipe 310's inlet end 311 to exhaust end, utilize the acoustic impedance change of the sectional area sudden change of each cavity, can interfere the noise of each frequency channel within range effectively to increase silencer 300's noise elimination volume, improve silencer 300's noise cancelling effect. In addition, the pipe sections of the muffling pipe 310 at the two ends of the second expansion cavity 330 extend into the second expansion cavity 330, which is beneficial to increasing the muffling frequency band of the muffler 300, so that the muffler 300 can effectively muffle noise in a wider frequency band.
Further, the length of the section of the muffling tube 310 located between the second expansion chamber 330 and the first expansion chamber 320 extending into the second expansion chamber 330 is a first length, and the length of the section of the muffling tube 310 located between the second expansion chamber 330 and the third expansion chamber 340 extending into the second expansion chamber 330 is a second length, and the first length is greater than the second length. The arrangement mode is beneficial to improving the noise elimination amount of the silencer 300 in the range of the middle and low frequency bands, so that the noise elimination effect of the silencer 300 in the range of the middle and low frequency bands is better.
Specifically, the first length may be 1/4 to 1/2 of the length of the second expansion chamber 330, and the second length may be 1/8 to 1/4 of the length of the second expansion chamber 330. In this embodiment, the first length is 1/2 of the length of the second expansion chamber 330, and the second length is 1/4 of the length of the second expansion chamber 330.
The first expansion lumen 320, the second expansion lumen 330, the third expansion lumen 340, and the fourth expansion lumen 350 may all be circular lumens. Those skilled in the art will be fully capable of applying the present application to other scenarios without departing from the principles of the present invention. For example, the first expansion chamber 320 to the fourth expansion chamber 350 are all oval chambers, rectangular chambers, or the like.
The first expansion chamber 320, the second expansion chamber 330, the third expansion chamber 340, and the fourth expansion chamber 350 may be coaxially disposed with the pipe body of the muffler pipe 310, so that the fluid can flow through the muffler 300 more smoothly.
The length of the first expansion chamber 320, the length of the second expansion chamber 330, the length of the third expansion chamber 340 and the length of the fourth expansion chamber 350 are completely the same, so that the time length of the fluid flowing through each expansion chamber is basically the same, and the better noise elimination effect of the muffler 300 is ensured.
The diameter of the first expansion lumen 320, the diameter of the second expansion lumen 330, the diameter of the third expansion lumen 340, and the diameter of the fourth expansion lumen 350 are not all the same. That is, at least two of the first expansion chamber 320 to the fourth expansion chamber 350 have different diameters, so that the flow velocity gradient of the fluid passing through the muffler 300 can be increased, the sound energy dissipation effect of the muffler 300 can be improved, and the sound resistance effect can be more remarkable.
In an alternative embodiment, the diameter of the first expansion lumen 320 is the same as the diameter of the fourth expansion lumen 350 and the diameter of the second expansion lumen 330 is the same as the diameter of the third expansion lumen 340. In this way, the muffler 300 is more stable after installation, which is beneficial to smooth passage of fluid.
Further, the diameter of the first expansion lumen 320 is smaller than the diameter of the second expansion lumen 330, and correspondingly, the diameter of the fourth expansion lumen 350 is also smaller than the diameter of the third expansion lumen 340. The arrangement is such that the fluid flows from the first expansion cavity 320 to the second expansion cavity 330 in the process of flowing through the muffler 300, and then flows from the third expansion cavity 340 to the fourth expansion cavity 350 after flowing out of the second expansion cavity 330, so as to form two opposite flow paths, thereby preventing noise from overflowing and ensuring the stability of the muffling performance of the muffler 300.
Specifically, the diameter of the first expansion chamber 320 may be 1.5 to 2.5 times the inner diameter of the muffler pipe 310, and the diameter of the second expansion chamber 330 may be 2.0 to 3.0 times the inner diameter of the muffler pipe 310. On the premise that the muffling amount meets the requirement, the diameters of the first expansion cavity 320 and the second expansion cavity can be designed to be as small as possible, and correspondingly, the sizes of the third expansion cavity 340 and the fourth expansion cavity 350 are reduced, so that the space occupation of the muffler 300 is reduced, the installation of the muffler 300 is facilitated, and the manufacturing cost of the muffler 300 is reduced.
Fig. 4 is a graph of sound attenuation transmission loss curves for three different configurations, where curve 1 represents the sound attenuation transmission loss curve of the original muffler 300 (i.e., a general single-expansion-chamber muffler 300). Curve 2 represents the muffling transmission loss curve of the improved muffler 300, and curve 3 represents the muffling transmission loss curve of the optimized muffler 300 (the muffler 300 of the present embodiment), the improved muffler 300 is different from the optimized muffler 300 in that the improved muffler 300 adopts a one-sided interpolation form, i.e., the pipe section of the muffling pipe 310 located between the second expansion chamber 330 and the first expansion chamber 320 extends into the second expansion chamber 330, and the optimized muffler 300 adopts a two-sided interpolation form, i.e., the pipe sections of the muffling pipe 310 located at both ends of the second expansion chamber 330 extend into the second expansion chamber 330. By analyzing the data of curve 1, curve 2 and curve 3, the following conclusions can be drawn:
through experimental determination, compared with the original muffler 300, the improved muffler 300 or the optimized muffler 300 can greatly increase the muffling amount and improve the muffling effect within the concerned 450Hz-1500Hz frequency band, so that the muffling performance of the muffler 300 is greatly improved. In addition, the maximum amount of sound deadening at 635Hz for the optimized muffler 300 of the present embodiment is up to 136dB, which is nearly doubled compared to the improved muffler 300. For the pulsation noise of the compressor 210 near 635Hz, the noise near the frequency can be obviously reduced by adopting the optimized silencer 300 of the embodiment, and the silencing effect is particularly obvious.
According to any one of the above-mentioned optional embodiments or the combination of a plurality of optional embodiments, the embodiment of the present invention can achieve the following beneficial effects:
the utility model discloses silencer 300, its first expansion chamber 320, second expansion chamber 330, third expansion chamber 340 and fourth expansion chamber 350 arrange in proper order along muffler pipe 310's inlet end 311 to exhaust end, utilize the acoustic impedance change of the sectional area sudden change of each cavity, can interfere the noise of each frequency channel within range effectively to increase silencer 300's noise elimination volume, improve silencer 300's noise cancelling effect. In addition, the pipe sections of the muffling pipe 310 located at both ends of the second expansion chamber 330 extend into the second expansion chamber 330, which is advantageous for increasing the muffling frequency band of the muffler 300, so that the muffler 300 can effectively muffle noise in a wider frequency band.
Further, in the muffler 300 according to the embodiment of the present invention, the extending length of the pipe section of the muffling pipe 310 between the second expansion chamber 330 and the first expansion chamber 320 in the second expansion chamber 330 is a first length, the extending length of the pipe section of the muffling pipe 310 between the second expansion chamber 330 and the third expansion chamber 340 in the second expansion chamber 330 is a second length, and the first length is greater than the second length. The arrangement mode is beneficial to improving the noise elimination amount of the silencer 300 in the range of the middle and low frequency bands, so that the noise elimination effect of the silencer 300 in the range of the middle and low frequency bands is better.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, which are consistent with the principles of the invention, from the disclosure herein, without departing from the spirit and scope of the invention.
Claims (10)
1. A muffler, comprising: the pipe section that is located the muffler pipe at second expansion chamber both ends all stretch into to the second at least partially expands the chamber.
2. The muffler of claim 1,
the extending length of the pipe section of the silencing pipe between the second expansion cavity and the first expansion cavity in the second expansion cavity is a first length;
the extending length of the pipe section of the silencing pipe positioned between the second expansion cavity and the third expansion cavity in the second expansion cavity is a second length; and is provided with
The first length is greater than the second length.
3. The muffler of claim 2,
the first length is 1/4-1/2 of the length of the second expansion cavity;
the second length is 1/8-1/4 of the length of the second expansion cavity.
4. The muffler of claim 1,
the first expansion cavity, the second expansion cavity, the third expansion cavity and the fourth expansion cavity are coaxially arranged with the pipe body of the silencing pipe.
5. The muffler of claim 1,
the length of the first expansion lumen, the length of the second expansion lumen, the length of the third expansion lumen, and the length of the fourth expansion lumen are identical.
6. The muffler of claim 1,
the diameter of the first expansion lumen, the diameter of the second expansion lumen, the diameter of the third expansion lumen, and the diameter of the fourth expansion lumen are not exactly the same.
7. The muffler of claim 1,
the diameter of the first expansion lumen is the same as the diameter of the fourth expansion lumen; and is
The diameter of the second expansion lumen is the same as the diameter of the third expansion lumen.
8. The muffler of claim 1,
the diameter of the first expansion chamber is smaller than the diameter of the second expansion chamber.
9. The muffler of claim 1,
the diameter of the first expansion cavity is 1.5-2.5 times of the inner diameter of the muffling tube;
the diameter of the second expansion cavity is 2.0-3.0 times of the inner diameter of the muffling tube.
10. An air conditioner characterized by comprising a compression refrigeration cycle system having a muffler according to any one of claims 1 to 9 installed in a fluid path thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221298269.9U CN217685832U (en) | 2022-05-26 | 2022-05-26 | Silencer and air conditioner with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221298269.9U CN217685832U (en) | 2022-05-26 | 2022-05-26 | Silencer and air conditioner with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217685832U true CN217685832U (en) | 2022-10-28 |
Family
ID=83703836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221298269.9U Active CN217685832U (en) | 2022-05-26 | 2022-05-26 | Silencer and air conditioner with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217685832U (en) |
-
2022
- 2022-05-26 CN CN202221298269.9U patent/CN217685832U/en active Active
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