CN217685827U - Silencer and air conditioner with same - Google Patents
Silencer and air conditioner with same Download PDFInfo
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- CN217685827U CN217685827U CN202221216447.9U CN202221216447U CN217685827U CN 217685827 U CN217685827 U CN 217685827U CN 202221216447 U CN202221216447 U CN 202221216447U CN 217685827 U CN217685827 U CN 217685827U
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Abstract
The utility model provides a silencer and have its air conditioner, include: the two ends of the expansion pipe are respectively provided with an air inlet and an air outlet; the air inlet pipe is connected with the air inlet of the expansion pipe; the air outlet pipe is connected with the air outlet of the expansion pipe; a first chamber, a second chamber and a third chamber which are sequentially communicated are formed in the expansion pipe along the flowing direction of fluid, and the diameter of the second chamber is smaller than that of the first chamber and that of the third chamber. The utility model has the advantages that can increase the noise elimination volume of silencer, 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 have also made higher demands on the comfort of air conditioners, such as the requirement of reducing the working noise of air conditioners. At present, the most commonly used muffler in an 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 a concerned 700Hz-1000Hz frequency band is fixed, so that the sound attenuation effect of the muffler on the noise of an air conditioner in the 700Hz-1000Hz frequency band is poor, and thus the improvement is still needed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an object of first aspect increases the noise elimination volume, improves noise cancelling effect.
The utility model discloses a further purpose of first aspect carries out configuration optimization to the expansion pipe, further increases the noise elimination volume, improves noise cancelling effect.
The utility model discloses the purpose of the 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 two ends of the expansion pipe are respectively provided with an air inlet and an air outlet;
the air inlet pipe is connected with the air inlet of the expansion pipe; and
the air outlet pipe is connected with the air outlet of the expansion pipe;
a first chamber, a second chamber and a third chamber which are sequentially communicated are formed inside the expansion pipe along the flowing direction of the fluid, and the diameter of the second chamber is smaller than that of the first chamber and that of the third chamber.
Optionally, the length of the second chamber is 1/8-3/4 of the total length of the dilation tube.
Optionally, the diameter of the first chamber is equal to the diameter of the third chamber; and is
The length of the first chamber is equal to the length of the third chamber.
Optionally, the inner diameter of the inlet pipe is equal to the inner diameter of the outlet pipe; and is provided with
The ratio of the inner diameter of the air inlet pipe to the diameter of the first chamber is 1;
the ratio of the inner diameter of the air inlet pipe to the diameter of the second chamber is 1.
Optionally, the expansion pipe comprises a first pipe section, a second pipe section and a third pipe section which are connected in sequence along the axial direction of the expansion pipe, and the first chamber, the second chamber and the third chamber are respectively formed inside the first pipe section, the second pipe section and the third pipe section.
Optionally, one end of the first pipe section adjacent to the second pipe section is a flat end surface; and is
One end of the third pipe section adjacent to the second pipe section is a flat end surface.
Optionally, the wall thickness of the dilation tube is between 0.5mm and 2mm.
Optionally, the length of the inlet pipe and the outlet pipe is 8 mm-15 mm.
Optionally, the air inlet pipe and the air outlet pipe are coaxially connected with the expansion pipe.
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 above-mentioned among the compression refrigeration cycle system's the fluid path.
The utility model discloses a silencer, its expansion pipe's inside is formed with first cavity, second cavity and third cavity, and first cavity, second cavity and third cavity communicate along fluidic flow direction in proper order, and the diameter of second cavity is less than the diameter of first cavity and third cavity, and the acoustic impedance that utilizes the sectional area sudden change of each cavity changes, can interfere the working noise of each frequency channel within range effectively to can increase the noise elimination volume of silencer, improve the noise elimination effect of silencer.
Further, the utility model discloses a silencer, the length in its second expansion chamber is 1/8 ~ 3/4 of expansion pipe total length, and the diameter in first expansion chamber equals with the diameter in third expansion chamber, and the length in first expansion chamber equals with the length in third expansion chamber, and through the length to the second expansion chamber, the length in first expansion chamber and diameter isoparametric optimize for the overall arrangement of each cavity is more reasonable, can further increase the noise elimination of silencer, improves the noise cancelling effect of silencer.
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 the muffler of FIG. 2;
fig. 4 is a schematic structural view of a muffler according to another embodiment of the present invention;
FIG. 5 is a cross-sectional view of the muffler of FIG. 4;
fig. 6 is a graph of sound attenuation transmission loss for three different configurations of mufflers.
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 air conditioner 10's structural principle picture, 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 this field, therefore no longer redundance here.
The air conditioner 10 of the present invention further includes a muffler 300, and the muffler 300 can be installed between the compressor 210 and any one of the heat exchangers 220 of the compression refrigeration cycle system 200.
Fig. 2 is a schematic structural view of a muffler 300 according to an embodiment of the present invention, fig. 3 is a cross-sectional view of the muffler 300 of fig. 2, and referring to fig. 2 and 3, the muffler 300 may include an expansion pipe 310, an inlet pipe 320, and an outlet pipe 330, wherein both ends of the expansion pipe 310 respectively have an air inlet and an air outlet, the inlet pipe 320 is connected to the air inlet of the expansion pipe 310, and the outlet pipe 330 is connected to the air outlet of the expansion pipe 310. The interior of the expanding tube 310 is formed with a first chamber 301, a second chamber 302, and a third chamber 303 which are communicated in order in the flow direction of the fluid, and the diameter of the second chamber 302 is smaller than the diameters of the first chamber 301 and the third chamber 303.
The utility model discloses silencer 300, its expansion pipe 310's inside is formed with first cavity 301, second cavity 302 and third cavity 303, first cavity 301, second cavity 302 and third cavity 303 communicate along fluidic flow direction in proper order, and the diameter of second cavity 302 is less than the diameter of first cavity 301 and third cavity 303, utilize the acoustic impedance change of the sectional area sudden change of each cavity, can interfere the working noise of each frequency channel within range effectively, thereby can increase silencer 300's noise elimination volume, improve silencer 300's anechoic effect.
The length of the second lumen 302 may be 1/8 to 3/4 of the total length of the dilation tube 310. For example, the length of the second chamber 302 is 1/8, 1/2, 3/5, 3/4, etc. of the total length of the expanding tube 310, so that the flow state of the fluid can be changed significantly during the process of flowing through the second chamber 302, thereby achieving the silencing effect on broadband noise in the middle and high frequency bands.
Fig. 4 is a schematic structural view of a muffler 300 according to another embodiment of the present invention, fig. 5 is a sectional view of the muffler 300 of fig. 4, and referring to fig. 4 and 5, a diameter of the first chamber 301 is equal to a diameter of the third chamber 303, and a length of the first chamber 301 is equal to a length of the third chamber 303. That is, the first cavity 301 and the third cavity 303 are symmetrically distributed about the second cavity 302, and the layout manner of the first cavity 301 and the second cavity 302 is more reasonable, so that the muffling amount of the muffler 300 is further increased, and the muffling effect of the muffler 300 is improved.
The inner diameter of the inlet pipe 320 is equal to the inner diameter of the outlet pipe 330, and the inlet pipe 320 and the outlet pipe 330 are inserted into and fitted with the refrigerant pipe 230, so that the muffler 300 is integrally connected in series in a fluid path of the compression refrigeration cycle system 200.
In the above embodiment, the ratio of the inner diameter of the inlet pipe 320 to the diameter of the first chamber 301 may be 1. The first chamber 301 and the second chamber 302 do not need to be designed to have large diameters, and therefore a good sound attenuation effect can be achieved.
Specifically, the expanding tube 310 may include a first tube section 311, a second tube section 312, and a third tube section 313 connected in sequence in an axial direction thereof, and the first, second, and third chambers 301, 302, and 303 are formed inside the first, second, and third tube sections 311, 312, and 313, respectively. The expanding tube 310 is formed by connecting three sections of tube sections, and has a simple structure and is easy to machine and form.
Preferably, the first pipe section 311, the second pipe section 312 and the third pipe section 313 are of an integrated structure, and the integrated structure has good connection stability, so that the joints of adjacent pipe sections are not easily broken.
Further, the end of the first tube segment 311 adjacent to the second tube segment 312 is a flat end surface, and the end of the third tube segment 313 adjacent to the second tube segment 312 is a flat end surface. By the arrangement, the flow of the fluid is suddenly changed between the first chamber 301 and the second chamber 302 and between the second chamber 302 and the third chamber 303, so that the acoustic impedance change is increased, and a better noise elimination effect is realized.
The wall thickness of the expanding tube 310 may be 0.5mm to 2mm. On the premise of saving the processing cost of the expansion pipe 310, the structure stability of the expansion pipe 310 is ensured, and the expansion pipe 310 is prevented from deforming.
The lengths of the inlet pipe 320 and the outlet pipe 330 may be 8mm to 15mm. On the premise of saving the processing cost of the air inlet pipe 320 and the air outlet pipe 330, the connection stability between the air inlet pipe 320 and the refrigerant pipeline 230 and the connection stability between the air outlet pipe 330 and the refrigerant pipeline 230 and the air inlet pipe 320 are ensured, and meanwhile, the separation between the refrigerant pipeline 230 and the air outlet pipe 330 and the refrigerant pipeline 320 is convenient to realize in the overhauling process.
Preferably, the inlet pipe 320 and the outlet pipe 330 may be coaxially connected to the extension pipe 310, thereby ensuring smooth passage of fluid.
Fig. 6 is a graph showing the sound attenuation transmission loss curves of three different structures of the muffler 300, wherein a curve 1 represents the sound attenuation transmission loss curve of the original muffler, namely, a common muffler with a single expansion chamber. Curve 2 represents the sound attenuation transmission loss curve of the improved muffler 300, wherein the length of the second chamber 302 of the muffler 300 is about 1/8 of the total length of the expanding pipe 310, and the second expanding chamber is disposed adjacent to one side of the air inlet pipe 320. Curve 3 represents the sound attenuation transmission loss curve of the optimized muffler 300, wherein the length of the second chamber 302 of the muffler 300 is 3/5 of the total length of the expanding pipe 310, and the distances from the second chamber 302 to the inlet pipe 320 and the outlet pipe 330 are equal.
By analyzing the data of the muffling transmission loss curves of the original muffler 300, the improved muffler 300 and the optimized muffler 300, the optimized muffler 300 is improved by 20% in the maximum muffling amount and 28% in the average muffling amount of the original muffler 300 in the focused 700Hz-1000Hz frequency band. In terms of cost, the optimized silencer 300 has a 13% reduction in the surface area of the material used in comparison with the original silencer 300, which is beneficial for saving the manufacturing cost of the silencer 300.
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 a silencer 300, its expansion pipe 310's inside is formed with first cavity 301, second cavity 302 and third cavity 303, first cavity 301, second cavity 302 and third cavity 303 communicate along fluidic flow direction in proper order, and the diameter of second cavity 302 is less than the diameter of first cavity 301 and third cavity 303, utilize the acoustic impedance change of the sectional area sudden change of each cavity, can interfere the working noise of each frequency channel within range effectively, thereby can increase silencer 300's noise elimination volume, improve silencer 300's noise cancelling effect.
Further, the utility model discloses a silencer 300, the length in its second expansion chamber is 1/8 ~ 3/4 of expansion pipe 310 total length, the diameter in first expansion chamber equals with the diameter in third expansion chamber, the length in first expansion chamber equals with the length in third expansion chamber, through the length to the second expansion chamber, the length in first expansion chamber and diameter isoparametric optimize for the overall arrangement of each cavity is more reasonable, can further increase silencer 300's the noise elimination volume, improve silencer 300's noise elimination effect.
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 to the invention consistent with the principles of the invention, which may be directly determined or derived from the disclosure of the present invention, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. A muffler, comprising:
the expansion pipe is provided with an air inlet and an air outlet at two ends respectively;
the air inlet pipe is connected with the air inlet of the expansion pipe; and
the air outlet pipe is connected with the air outlet of the expansion pipe;
a first chamber, a second chamber and a third chamber which are sequentially communicated are formed in the expansion pipe along the flowing direction of fluid, and the diameter of the second chamber is smaller than that of the first chamber and that of the third chamber.
2. The muffler of claim 1,
the length of the second cavity is 1/8-3/4 of the total length of the expansion pipe.
3. The muffler of claim 1,
the diameter of the first chamber is equal to the diameter of the third chamber; and is provided with
The length of the first chamber is equal to the length of the third chamber.
4. The muffler of claim 3,
the inner diameter of the air inlet pipe is equal to that of the air outlet pipe; and is
The ratio of the inner diameter of the air inlet pipe to the diameter of the first chamber is 1;
the ratio of the inner diameter of the air inlet pipe to the diameter of the second chamber is 1.
5. The muffler of claim 1,
the expansion pipe comprises a first pipe section, a second pipe section and a third pipe section which are sequentially connected along the axial direction of the expansion pipe, and the first chamber, the second chamber and the third chamber are respectively formed inside the first pipe section, the second pipe section and the third pipe section.
6. The muffler of claim 5,
one end of the first pipe section, which is adjacent to the second pipe section, is a flat end surface; and is
One end of the third pipe section adjacent to the second pipe section is a flat end surface.
7. The muffler of claim 1,
the thickness of the pipe wall of the expansion pipe is 0.5 mm-2 mm.
8. The muffler of claim 1,
the length of the air inlet pipe and the length of the air outlet pipe are 8 mm-15 mm.
9. The muffler of claim 1,
the air inlet pipe, the air outlet pipe and the expansion pipe are coaxially connected.
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 |
|---|---|---|---|
| CN202221216447.9U CN217685827U (en) | 2022-05-18 | 2022-05-18 | Silencer and air conditioner with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221216447.9U CN217685827U (en) | 2022-05-18 | 2022-05-18 | Silencer and air conditioner with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217685827U true CN217685827U (en) | 2022-10-28 |
Family
ID=83741575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221216447.9U Active CN217685827U (en) | 2022-05-18 | 2022-05-18 | Silencer and air conditioner with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217685827U (en) |
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2022
- 2022-05-18 CN CN202221216447.9U patent/CN217685827U/en active Active
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