Silencer and air conditioner
By setting multiple partitions in the silence cavity of the air conditioner silencer to form silence slits of different silence frequencies, the problems of narrow frequency range and large volume of the existing silencer are solved, and better noise silence effect and space efficiency are achieved.
Patent Information
- Application Number
- CN202421830051.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-07-30
AI Technical Summary
The silence frequency range of existing air conditioners is narrow, resulting in poor noise silence. When trying to widen the frequency range, the silencer is too large and takes up too much space.
A silencer is designed, wherein multiple partitions are provided at intervals in the silence cavity, and through holes are provided on the partitions. The through holes on at least two partitions are of different sizes, thereby forming silence slits of different silence frequencies, and the silence frequency range of the silencer is widened through the series connection of multiple slits.
It effectively weakens the noise of multiple frequencies, improves the silence effect, and maintains the overall size of the silencer, without changing the external structure or connecting multiple silence structures in series.
Smart Images
Figure CN222938006U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of air conditioners, and particularly relates to a silencer and an air conditioner. Background Art
[0002] When the refrigerant in an air conditioner flows, it will generate relatively large noise, and a silencer is often installed in the refrigerant pipeline system of the air conditioner to reduce the noise. The silencing frequency range of common air conditioner silencers is relatively narrow, resulting in a poor silencing effect on the noise. In the related art, multiple silencers with different silencing frequencies can be connected in series in the refrigerant pipeline system to broaden the silencing frequency range of the silencer, so as to obtain a better silencing effect. However, this will cause the volume of the silencer to be too large, occupying more installation space in the air conditioner housing. Utility Model Content
[0003] An embodiment of this application provides a silencer, aiming to increase the silencing effect of the silencer on the premise of avoiding the over-large volume of the silencer.
[0004] On the one hand, an embodiment of this application provides a silencer, including: a silencer body, provided with an air inlet, an air outlet and a silencing cavity, the silencing cavity communicating with the air inlet and the air outlet; and
[0005] A plurality of partitions, sequentially arranged at intervals in the silencing cavity, the partitions are provided with through holes, and the through holes on at least two partitions are different in size.
[0006] In some embodiments, the plurality of partitions are sequentially and equally spaced.
[0007] In some embodiments, along the arrangement direction of the plurality of partitions, the distance between adjacent two partitions increases sequentially.
[0008] In some embodiments, along the arrangement direction of the plurality of partitions, the distance between adjacent two partitions decreases sequentially.
[0009] In some embodiments, the through holes on the plurality of partitions are coaxially arranged, and the centers of the through holes are located on the same axis.
[0010] In some embodiments, along the arrangement direction of the plurality of partitions, the diameters of the through holes on the plurality of partitions first gradually decrease and then gradually increase.
[0011] In some embodiments, along the arrangement direction of the plurality of partitions, the diameters of the through holes on the plurality of partitions gradually increase.
[0012] In some embodiments, along the arrangement direction of the plurality of partitions, the diameters of the through holes on the plurality of partitions gradually decrease.
[0013] In some embodiments, the silencer body includes an upper housing and a lower housing. The upper housing covers the lower housing to form the sound absorption cavity, and the partition is in contact with the upper housing and the lower housing respectively.
[0014] In some embodiments, the partition is detachably installed in the sound absorption cavity.
[0015] In some embodiments, the partition is fixed in the sound absorption cavity.
[0016] In some embodiments, the partition is welded to the inner peripheral wall of the silencer body.
[0017] In some embodiments, the partition is integrally cast with the silencer body.
[0018] In some embodiments, the shape of the partition is adapted to the shape of the sound absorption cavity, and the outer peripheral wall of the partition abuts against the inner peripheral wall of the sound absorption cavity.
[0019] In some embodiments, the air inlet is arranged to gradually expand along the air inlet direction.
[0020] In some embodiments, the air outlet is arranged to gradually contract along the exhaust direction.
[0021] On the other hand, an embodiment of the present application provides an air conditioner, including the silencer as described above, and the silencer is used to connect the four-way valve of the air conditioner.
[0022] In the embodiment of the present application, a plurality of partitions respectively provided with through holes are arranged at intervals in the sound absorption cavity of the silencer body, so that sound absorption slits are respectively formed between adjacent two partitions, and a plurality of sequentially connected sound absorption slits are formed in the sound absorption cavity; since the sizes of the through holes on at least two partitions are different, at least two sound absorption slits have different sound absorption frequencies, and the sound absorption frequency range of the silencer is further broadened by the series connection of a plurality of sound absorption slits. Therefore, noises of multiple frequencies can be weakened. Moreover, this silencer only needs to add a structure in the sound absorption cavity, without changing the external structure of the silencer, nor through the series connection of multiple sound absorption structures. Therefore, the overall volume of this silencer can be ensured to be small. Description of the Drawings
[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0024] Figure 1 It is a schematic structural diagram of a silencer provided by some embodiments of the present application;
[0025] Figure 2 is Figure 1 Schematic diagram of the internal structure of the middle muffler;
[0026] Figure 3 is Figure 1 Schematic diagram of the structure of the partition plate and the lower housing of the middle muffler;
[0027] Figure 4 is Figure 1 Explosion diagram of the middle muffler;
[0028] Figure 5 It is the curve graph of the transmission loss of noise in the muffler provided by some embodiments of the present application.
[0029] Description of main component symbols: 1. Muffler body; 11. Upper housing; 12. Lower housing; 13. Sound absorption cavity; 14. Air inlet; 15. Air outlet; 16. Slot; 2. Partition plate; 21. Through hole; 22. Sound absorption slit. Specific embodiments
[0030] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present application.
[0031] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.
[0032] "A and / or B" includes the following three combinations: only A, only B, and the combination of A and B.
[0033] The use of "suitable for" or "configured to" in this application means open and inclusive language, which does not exclude devices that are suitable for or configured to perform additional tasks or steps. Additionally, the use of "based on" means open and inclusive because a process, step, calculation, or other action "based on" one or more of the stated conditions or values can, in practice, be based on additional conditions or values beyond those stated.
[0034] In this application, the term "exemplary" is used to mean "serving as an example, instance, or illustration". Any embodiment described as "exemplary" in this application is not necessarily to be construed as more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use this application. In the following description, details are set forth for the purpose of explanation. It should be understood that those of ordinary skill in the art can recognize that this application can be implemented without these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of this application with unnecessary details. Therefore, this application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed in this application.
[0035] As Figures 1 to 4 shown, an embodiment of this application provides a silencer, which includes a silencer body 1 and a plurality of partitions 2. The silencer body 1 is provided with an air inlet 14, an air outlet 15, and a sound-absorbing cavity 13. The sound-absorbing cavity 13 communicates with the air inlet 14 and the air outlet 15; the refrigerant can enter the sound-absorbing cavity 13 from the air inlet 14 and flow out from the air outlet 15 after passing through the sound-absorbing cavity 13. The plurality of partitions 2 are sequentially and spaced apart in the sound-absorbing cavity 13. The partitions 2 are provided with through holes 21, and the through holes 21 on at least two partitions 2 are different in size. In this way, after entering the sound-absorbing cavity 13, the refrigerant can sequentially pass through the through holes 21 on the plurality of partitions 2 and flow to the air outlet 15.
[0036] In an embodiment of this application, a plurality of partitions 2 each provided with a through hole 21 are spaced apart in the sound-absorbing cavity 13 of the silencer body 1, so that sound-absorbing slits 22 are respectively formed between adjacent two partitions 2, and a plurality of sequentially connected sound-absorbing slits 22 are formed in the sound-absorbing cavity 13; since the sizes of the through holes 21 on at least two partitions 2 are different, at least two sound-absorbing slits 22 have different sound-absorbing frequencies, and the sound-absorbing frequency range of the silencer is further broadened through the series connection of the plurality of sound-absorbing slits 22. Therefore, noises of multiple frequencies can be weakened, and this silencer only needs to add a structure in the sound-absorbing cavity 13, without changing the external structure of the silencer, nor through the series connection of multiple sound-absorbing structures. Thus, the overall volume of this silencer can be ensured to be relatively small.
[0037] In some embodiments, as Figure 2 shown, the plurality of partitions 2 are sequentially and equally spaced apart.
[0038] Specifically, the number of the partition plates 2 is greater than or equal to two. In this embodiment, the number of the partition plates 2 is thirteen. In the direction from the air inlet 14 to the air outlet 15, there are sound absorption slits 22 between two adjacent partition plates 2, and the widths of each of the sound absorption slits 22 are the same. With such a setting, when the refrigerant flows in the sound absorption cavity 13, it can come into contact with more partition plates 2, thereby further enhancing the noise elimination effect.
[0039] In another embodiment, along the arrangement direction of the plurality of partition plates 2, the distance between two adjacent partition plates 2 increases in sequence; in yet another embodiment, along the arrangement direction of the plurality of partition plates 2, the distance between two adjacent partition plates 2 decreases in sequence.
[0040] Specifically, in the direction from the air inlet 14 to the air outlet 15, the widths of the plurality of sound absorption slits 22 increase in sequence; or, in the direction from the air inlet 14 to the air outlet 15, the widths of the plurality of sound absorption slits 22 decrease in sequence. By changing the arrangement mode of the plurality of partition plates 2, the flow of the refrigerant is further changed, so that the reflection and interference phenomena of the noise can be continuously generated, and the noise of other frequencies can be eliminated, thereby being able to broaden the sound absorption frequency range of the muffler and enhance the sound absorption effect of the muffler.
[0041] In some embodiments, as Figure 2 shown, the through holes 21 on the plurality of partition plates 2 are coaxially arranged, and the centers of the through holes 21 are located on the same axis.
[0042] Specifically, the shape of the through hole 21 can be various. In this embodiment, all the through holes 21 are circular holes. During the production stage, a plurality of partition plates 2 can be processed simultaneously, and all the through holes 21 can be processed in one process. With such a setting, the processing convenience of the partition plates 2 can be improved, and during installation, it is not necessary to position all the through holes 21. After placing the plurality of partition plates 2, all the through holes 21 can be aligned, which can also ensure the smooth flow of the refrigerant without being blocked, and the refrigerant can flow better into the sound absorption slits 22 and come into contact with the partition plates 2.
[0043] In some embodiments, as Figure 2 shown, along the arrangement direction of the plurality of partition plates 2, the diameters of the through holes 21 on the plurality of partition plates 2 first gradually decrease and then gradually increase.
[0044] Specifically, in this embodiment, the closer the partition plates 2 are to both ends of the muffler body 1, the larger the diameters of their through holes 21 are, and the closer the partition plates 2 are to the middle position of the muffler body 1, the smaller their diameters are. By changing the sizes of the through holes 21 on the refrigerant flow path, various different frequencies of the noise are eliminated. With such a setting, the medium and high frequencies of the noise can be better eliminated.
[0045] In another embodiment, along the arrangement direction of the plurality of partition plates 2, the diameters of the through holes 21 on the plurality of partition plates 2 gradually increase; in yet another embodiment, along the arrangement direction of the plurality of partition plates 2, the diameters of the through holes 21 on the plurality of partition plates 2 gradually decrease.
[0046] Specifically, in the direction from the air inlet 14 towards the air outlet 15, the sizes of the through holes 21 on the plurality of partition plates 2 are distributed in an arithmetic progression, that is, the sizes of the plurality of through holes 21 increase or decrease in an arithmetic progression. Such a setting can expand the sound absorption frequency range of the muffler, and both low-frequency and high-frequency noises can be effectively eliminated, improving the noise elimination effect of the muffler.
[0047] In some embodiments, as Figures 2 to 4 shown, the muffler body 1 includes an upper housing 11 and a lower housing 12. The upper housing 11 covers the lower housing 12 to form a sound absorption cavity 13, and the partition plates 2 are respectively in contact with the upper housing 11 and the lower housing 12.
[0048] Specifically, the muffler body 1 is divided into two symmetrical parts, the upper housing 11 and the lower housing 12. The upper housing 11 and the lower housing 12 are connected together by welding. One end of the partition plate 2 is connected to the inner wall of one of the upper housing 11 and the lower housing 12. After the upper housing 11 and the lower housing 12 are welded together, the other end of the partition plate 2 abuts against the inner wall of the other one of them. Such a setting can reduce the difficulty of installing the partition plate 2 inside the muffler body 1, and also improve the installation tightness between the upper housing 11, the lower housing 12 and the partition plate 2, and can avoid the occurrence of air leakage in the muffler. In some other embodiments, the muffler includes a left housing and a right housing that are opened left and right.
[0049] In some embodiments, as Figure 3 shown, the partition plate 2 is fixed in the sound absorption cavity 13.
[0050] Specifically, one end of the partition plate 2 is fixedly connected to the inner wall of the lower housing 12, and the other end abuts against the inner wall of the upper housing 11. Such a setting can increase the stability of the partition plate 2 installed in the muffler body 1, so that the partition plate 2 is not easily loosened during use.
[0051] Furthermore, in this embodiment, the partition plate 2 is welded to the inner peripheral wall of the muffler body 1.
[0052] Specifically, one end of the partition plate 2 is fixed to the inner wall of the lower housing 12 by welding. A slot 16 is provided on the inner wall of the upper housing 11 corresponding to each partition plate 2. When the upper housing 11 and the lower housing 12 are covered, the partition plate 2 is tightly inserted into the slot 16, and the outer peripheral wall of the partition plate 2 abuts against the bottom wall of the slot 16. With this setting, due to the high stability of welding, the stability of the partition plate 2 installed on the silencer body 1 can be further improved.
[0053] In another embodiment, the partition plate 2 and the silencer body 1 are integrally cast.
[0054] Specifically, when producing the upper housing 11 or the lower housing 12, a plurality of partition plates 2 are directly integrally cast with one of them. This setting can improve the connection tightness between the partition plate 2 and the silencer body 1, can also improve the overall strength, and integral casting can save processes, improve production speed, and reduce production costs.
[0055] In another embodiment, the partition plate 2 is detachably installed in the sound absorption cavity 13.
[0056] Specifically, a plurality of mounting ring grooves are provided on the peripheral wall of the sound absorption cavity 13, and a plurality of partition plates 2 are inserted into the plurality of mounting ring grooves one by one. The outer peripheral wall of the partition plate 2 abuts against the bottom wall of the mounting ring groove. This setting facilitates the disassembly and assembly of the partition plate 2, and is more convenient when the partition plate 2 needs to be repaired or replaced.
[0057] In some embodiments, as Figure 3 and Figure 4 shown, the shape of the partition plate 2 is adapted to the shape of the sound absorption cavity 13, and the outer peripheral wall of the partition plate 2 abuts against the inner peripheral wall of the sound absorption cavity 13.
[0058] Specifically, by designing the outer shape of the partition plate 2 to be the same as the cross-section of the sound absorption cavity 13, when the partition plate 2 is installed in the sound absorption cavity 13, it can be closely attached to the inner wall of the sound absorption cavity 13. This setting can avoid the generation of gaps between the outer peripheral wall of the partition plate 2 and the inner wall of the sound absorption cavity 13, so that the partition plate 2 can better fit the sound absorption cavity 13 to ensure that the refrigerant flows through the through hole 21, and improve the sound absorption effect on the refrigerant.
[0059] In some embodiments, as Figures 2 to 4 shown, the air inlet 14 is gradually expanded along the air inlet direction.
[0060] Specifically, in this embodiment, the air inlet direction is the direction in which the air inlet 14 faces the sound absorption cavity 13, and the air inlet 14 is designed as a gradually expanding horn shape. This setting can increase the resistance suffered by the refrigerant when flowing into the silencer, thereby reducing the flow rate of the refrigerant to reduce the volume of the noise.
[0061] In some embodiments, as Figures 2 to 4As shown, the air outlet 15 is tapered along the exhaust direction.
[0062] Specifically, the exhaust direction is the direction from the silencing chamber 13 towards the air outlet 15. The air outlet 15 is designed in a tapered funnel shape. Such a setting can increase the pressure and speed when the refrigerant flows out, so that when the refrigerant flows to the end of the muffler, it can flow outwards faster, ensuring that the overall flow rate of the refrigerant does not change significantly.
[0063] In some other embodiments, both the air inlet 14 and the air outlet 15 of the muffler are cylindrical openings.
[0064] As Figure 5 shown, the solid line is the transmission loss curve of the noise in the muffler in the related art, and the dashed line is the transmission loss curve of the noise in the muffler of this embodiment. It can be clearly seen that in the frequency range of 1200 to 3000 Hz, the noise transmission loss performance is significantly improved. Especially for the noise above 4000 Hz, the maximum noise reduction volume can exceed 65 dB. The frequencies that the human ear is most sensitive to are 1000 to 3000 Hz. Therefore, the muffler of this embodiment can weaken the frequencies in the noise that the human ear is more sensitive to as much as possible, making the volume of the noise received by the human ear as small as possible.
[0065] On the other hand, an embodiment of the present application provides an air conditioner, including the aforementioned muffler, and the muffler is used to connect the four-way valve of the air conditioner.
[0066] The above has introduced the muffler provided by the embodiments of the present application in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.
Claims
1. A muffler, characterized in that: include: The muffler body is provided with an air inlet, an air outlet and a muffler cavity, wherein the muffler cavity is connected with the air inlet and the air outlet; as well as A plurality of partitions are sequentially and spaced apart in the muffler cavity, and through holes are arranged on the partitions, and the through holes on at least two partitions are of different sizes.
2. The muffler according to claim 1, characterized in that: The plurality of partitions are distributed at equal intervals in sequence; or, along the arrangement direction of the plurality of partitions, the distance between two adjacent partitions increases in sequence; or, along the arrangement direction of the plurality of partitions, the distance between two adjacent partitions decreases in sequence.
3. The muffler according to claim 1, characterized in that: The through holes on the plurality of partitions are coaxially arranged, and the centers of the through holes are located on the same axis.
4. The muffler according to claim 1, characterized in that: Along the arrangement direction of the multiple partitions, the diameters of the through holes on the multiple partitions first gradually decrease and then gradually increase; or, along the arrangement direction of the multiple partitions, the diameters of the through holes on the multiple partitions gradually increase; or, along the arrangement direction of the multiple partitions, the diameters of the through holes on the multiple partitions gradually decrease.
5. The muffler according to claim 1, characterized in that: The muffler body comprises an upper shell and a lower shell, the upper shell covers the lower shell to form the muffler chamber, and the partition plate abuts against the upper shell and the lower shell respectively.
6. The muffler according to claim 1, characterized in that: The partition is detachably mounted on the silencing chamber; or, the partition is fixed to the silencing chamber.
7. The muffler according to claim 1, characterized in that: The partition is welded to the inner peripheral wall of the muffler body; or, the partition is integrally cast with the muffler body.
8. The silencer according to any one of claims 1 to 7, characterized in that: The shape of the partition is adapted to the shape of the silencing cavity, and the outer peripheral wall of the partition abuts against the inner peripheral wall of the silencing cavity.
9. The muffler according to claim 1, characterized in that: The air inlet is arranged to expand gradually along the air intake direction, and / or the air outlet is arranged to contract gradually along the air exhaust direction.
10. An air conditioner, characterized in that: It comprises a silencer as claimed in any one of claims 1 to 9, wherein the silencer is used to connect to a four-way valve of the air conditioner.