Silencer and air conditioner

Abstract

This invention relates to a silencer and an air conditioner. During installation, the silencer body is fitted onto the outside of the compressor with its first surface facing the compressor. The silencer cavity is then connected to the compressor, utilizing the cavity to reduce noise from the compressor's output airflow. Because the middle portion of the first surface along the compressor's circumference is recessed towards the silencer cavity, the cross-sectional area of ​​the silencer cavity can be increased during silencer design. This allows for sufficient space between the first surface and the compressor to accommodate sound-absorbing cotton, facilitating its assembly. Simultaneously, the recessed design of the middle portion of the first surface allows the two ends of the silencer body along a predetermined direction to be positioned closer to the compressor. Therefore, even if the size of the silencer cavity is increased along the predetermined direction, the two ends of the silencer body can still be close to the compressor, reducing the space occupied by the compressor's external components and providing reasonable assembly space for other piping designs.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and in particular to silencers and air conditioners. Background Technology

[0002] Vibration and noise from the outdoor unit of an air conditioner are important indicators for evaluating air conditioner quality and affecting user comfort. The compressor is one of the main sources of vibration and noise in the outdoor unit. Therefore, a silencer is typically installed between the compressor exhaust port and the condenser during air conditioner product design. However, due to structural design flaws in traditional silencers, increasing the silencer's expansion ratio can easily interfere with the surrounding structures of the compressor, such as the assembly of sound insulation materials and piping design. This makes it impossible to effectively balance the silencer's noise reduction performance with the assembly of the compressor's surrounding structures. Summary of the Invention

[0003] Therefore, it is necessary to provide a silencer and air conditioner that can effectively balance the silencer's noise reduction performance and the assembly of the compressor's peripheral structure.

[0004] A silencer for use on an air conditioner compressor includes: a silencer body having a silencer cavity inside, and the surface of the silencer body including a first surface, the first surface being disposed toward the compressor; wherein, a middle portion of the first surface along a predetermined direction is recessed toward the silencer cavity, the predetermined direction being configured as the circumferential direction of the compressor.

[0005] The aforementioned muffler is installed with its first surface facing the compressor, fitted onto the outside of the compressor. The muffler cavity is then connected to the compressor to reduce noise from the compressor's output airflow. Because the middle portion of the first surface along the compressor's circumference is recessed towards the muffler cavity, the cross-sectional area of ​​the muffler cavity can be increased during muffler design. This allows for sufficient space between the first surface and the compressor to accommodate sound-absorbing cotton, facilitating its assembly. Simultaneously, the recessed design of the middle portion of the first surface allows the two ends of the muffler to be positioned closer to the compressor along a predetermined direction. Therefore, even if the size of the muffler cavity is increased along the predetermined direction, the two ends of the muffler can still be close to the compressor, reducing the space occupied by the compressor's external components and providing reasonable assembly space for other piping designs. Thus, the muffler structural design of this application effectively balances the muffler's noise reduction performance with the assembly of the compressor's surrounding structures.

[0006] In some embodiments, the projection of the first surface onto a plane perpendicular to the height direction of the muffler is defined as a first projection line, which is constructed as an arc curve recessed toward one side of the muffler cavity.

[0007] In some embodiments, the surface of the silencer further includes a second surface opposite to the first surface, wherein a middle portion of the second surface protrudes toward the side opposite to the silencer cavity along the preset direction.

[0008] In some embodiments, the projection of the second surface onto a plane perpendicular to the height direction of the muffler is defined as a second projection line, which is constructed as an arc curve convex toward the side opposite to the muffler cavity.

[0009] In some embodiments, the projection of the first surface onto a plane perpendicular to the height direction of the muffler is defined as a first projection line, which is an arc curve and whose center is concentric with the center of the second projection line.

[0010] In some embodiments, the surface of the muffler further includes two side surfaces spaced between the first surface and the second surface, each side surface being arc-shaped and protruding toward the side opposite to the muffler cavity.

[0011] In some embodiments, the silencer has two openings communicating with the silencer cavity, and both openings are located on the same side of the silencer.

[0012] In some embodiments, one end face of the muffler along the height direction of the muffler includes a top surface, and the two openings are spaced apart on the top surface along the preset direction.

[0013] In some embodiments, at least one edge of the top surface along the preset direction is an arc edge, the distance between the centers of the two openings is denoted as L1, and the radius of the arc edge is denoted as R0, wherein 3R0≤L1≤5R0.

[0014] In some embodiments, the muffler further includes a first pipe and a second pipe, the first pipe and the second pipe being respectively inserted into the two openings.

[0015] In some embodiments, the first pipe and / or the second pipe has a flared end away from the silencing cavity.

[0016] In some embodiments, the distance between the end of the first pipe and / or the second pipe away from the silencing cavity and the surface of the silencing body having the opening is denoted as L2, where L2 ≥ 30 mm.

[0017] In some embodiments, the first pipe and / or the second pipe has a reversing part at one end that extends into the silencing cavity, and the opening of the reversing part is arranged facing the adjacent cavity wall in the two opposing cavity walls along the preset direction of the silencing cavity.

[0018] In some embodiments, the reversing part includes a cut surface that is inclinedly disposed on the first or second pipe fitting, and the cut surface is disposed facing the adjacent cavity wall in the two opposing cavity walls of the silencing cavity along the preset direction.

[0019] In some embodiments, each of the openings has a circumferential flange at its edge, and the flange is connected to the first or second pipe fitting.

[0020] An air conditioner includes: a compressor; and a muffler as described in any of the preceding claims, the muffler being in communication with the compressor and having a first surface facing the compressor.

[0021] The aforementioned air conditioner uses the above-mentioned muffler. Because the middle portion of the first surface along the circumference of the compressor is recessed towards the muffler cavity, the cross-sectional area of ​​the muffler cavity can be increased during muffler design. This allows for sufficient space between the first surface and the compressor to accommodate the sound-absorbing cotton, facilitating its assembly. Simultaneously, the recessed design of the middle portion of the first surface allows the two ends of the muffler to be positioned closer to the compressor along a predetermined direction. Therefore, even if the size of the muffler cavity is increased along the predetermined direction, the two ends of the muffler can still be close to the compressor, reducing the space occupied by the compressor's external components and providing reasonable assembly space for other piping designs. Thus, the muffler structural design of this application effectively balances the muffler's noise reduction performance with the assembly of the compressor's surrounding structures. Attached Figure Description

[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the silencer structure described in some embodiments of this application;

[0025] Figure 2 for Figure 1 A cross-sectional view of the muffler structure in the image;

[0026] Figure 3 for Figure 1 Top view of the muffler structure in the image;

[0027] Figure 4The following are analytical schematic diagrams of the muffler of this application and existing mufflers as described in some embodiments of this application;

[0028] Figure 5 This is a schematic diagram of the silencer structure described in some other embodiments of this application;

[0029] Figure 6 for Figure 5 A cross-sectional view of the muffler structure in the image;

[0030] Figure 7 This is a perspective view of the air conditioner structure described in some embodiments of this application;

[0031] Figure 8 This is another perspective view of the air conditioner structure described in some embodiments of this application.

[0032] 100. Silencer; 10. Silencer body; 1a. Cylinder; 1b. First end cap; 1c. Second end cap; 11. Silencer cavity; 111. Cavity wall; 12. Opening; 13. First surface; 131. First projection line; 14. Second surface; 141. Second projection line; 15. Top surface; 151. Edge; 16. Side surface; 17. Flanged edge; 171. Folded edge; 20. First fitting; 21. Flared end; 22. Reversing part; 221. Cut surface; 30. Second fitting; 200. Compressor; 300. Sound insulation cotton; 400. Connecting pipe; X. Preset direction; Y. Height direction. Detailed Implementation

[0033] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] When the compressor in the outdoor unit of an air conditioner is running, the vibration of the compressor and the noise from the refrigerant impact are transmitted to the indoor unit through the copper pipes and refrigerant, affecting the user experience. In air conditioner design, a silencer is typically installed between the compressor's exhaust port and the condenser to reduce noise.

[0035] The applicant notes that most air conditioner mufflers currently used are expansion-structure mufflers, located after the compressor exhaust port. Traditional mufflers are typically cylindrical or elliptical in shape. For cylindrical mufflers, increasing the circular cross-sectional area to improve the expansion ratio results in a larger muffler diameter, which reduces the gap between the muffler and the compressor, affecting the assembly of the sound insulation material on the compressor. Simultaneously, the increased diameter leads to a larger lateral space occupied by the muffler, impacting external piping design.

[0036] Similarly, for elliptical mufflers, increasing the size of both the major and minor axes can improve the expansion ratio. However, increasing the major axis results in the muffler being farther from the compressor at both ends, reducing the space available for other piping designs. Increasing the minor axis, on the other hand, makes the elliptical muffler more cylindrical, reducing the gap between the muffler and the compressor and severely impacting the installation of sound insulation material on the compressor.

[0037] Based on this, please refer to Figure 1 , Figure 2 and Figure 7 The applicant has designed a silencer 100 for use on the compressor 200 of an air conditioner. The silencer 100 includes a silencer body 10. The silencer body 10 has a silencer cavity 11 inside, and the surface of the silencer body 10 includes a first surface 13, which is positioned facing the compressor 200. The middle portion of the first surface 13 along a predetermined direction X is recessed towards the silencer cavity 11, and the predetermined direction X is configured to be the circumferential direction of the compressor 200.

[0038] During installation, the silencer 100 is fitted onto the outside of the compressor 200 with its first surface 13 facing the compressor 200. The silencer cavity 11 is then connected to the compressor 200, using it to reduce noise from the airflow output by the compressor 200. Because the middle portion of the first surface 13 along the circumference of the compressor 200 is recessed towards the silencer cavity 11, the cross-sectional area of ​​the silencer cavity 11 can be increased when designing the silencer 100. This allows for sufficient space between the first surface 13 and the compressor 200 to accommodate the sound insulation cotton 300, facilitating its assembly. Simultaneously, the recessed design of the middle portion of the first surface 13 allows the two ends of the silencer 10 to be positioned closer to the compressor 200 along the preset direction X. Therefore, even if the size of the silencer cavity 11 is increased along the preset direction X, the two ends of the silencer 10 can still be brought closer to the compressor 200, reducing the space occupied by the compressor 200 and providing reasonable assembly space for other piping designs. Thus, through the structural design of the muffler 100 in this application, the noise reduction performance of the muffler 100 and the assembly of the surrounding structure of the compressor 200 can be effectively balanced.

[0039] It should be noted that the silencing cavity 11 refers to the cavity inside the silencing body 10, which can reduce noise by silencing the incoming airflow. The silencing principle of the silencing body 10 can be the expansion silencing principle, that is, by using the abrupt change in interface area to change the structural acoustic impedance, thereby generating sound wave reflection and interference to achieve the purpose of silencing.

[0040] To achieve communication between the silencer chamber 11 and the compressor 200, a piping structure can be arranged between the silencer 10 and the compressor 200. Various piping structures can be used between the silencer 10 and the compressor 200, as long as they allow airflow to be transported from the compressor 200 to the silencer chamber 11.

[0041] The expansion ratio of the muffler 100 refers to the ratio of the cross-sectional area of ​​the muffler cavity 11 to the cross-sectional area of ​​the air intake structure (such as the air intake pipe), which determines the muffler volume; the larger the expansion ratio, the larger the muffler volume. To increase the expansion ratio, the cross-sectional area of ​​the muffler cavity 11 can be increased, for example, by increasing the size of the muffler cavity 11 along a preset direction X; or by increasing the size of the muffler cavity 11 along a direction approximately perpendicular to the first surface 13, etc. The cross-section of the muffler cavity 11 refers to the cross-section obtained by cutting the muffler cavity 11 with a plane perpendicular to the height direction Y of the muffler 100.

[0042] It should also be noted that the first surface 13 refers to an inwardly recessed surface on the silencer 10. In its recessed design, the first surface 13 is recessed inward along the middle portion of the circumference of the compressor 200. Thus, the recessed first surface 13 surrounds the compressor 200, allowing it to better conform to the shape of the compressor 200. The compressor 200 is generally a columnar structure, such as, but not limited to, a cylindrical structure.

[0043] The shape of the recessed first surface 13 can be designed in various ways, such as, but not limited to, an arc-shaped surface, an inverted trapezoidal surface, etc.

[0044] Further, please refer to Figure 3 The projection of the first surface 13 onto a plane perpendicular to the height direction Y of the muffler 100 is defined as the first projection line 131. The first projection line 131 is constructed as a concave arc curve facing the muffler cavity 11, indicating that the first surface 13 is part of a cylindrical curved surface. This allows the first surface 13 to better fit the shape of the compressor 200, facilitating the assembly of the sound insulation cotton 300 between the first surface 13 and the compressor 200. Simultaneously, when increasing the cross-sectional area of ​​the muffler cavity 11 to improve the expansion ratio, a good assembly space can always be maintained between the first surface 13 and the compressor 200, and the two ends of the muffler 10 along the preset direction X can also be closer to the compressor 200, thereby reducing the space occupied by the compressor 200.

[0045] It should be noted that the height direction Y of the muffler 100 can be understood as the fact that when the first surface 13 is recessed, it will bend around at least one axis, and the direction of this axis can be regarded as the height direction Y of the muffler 100. Of course, the height direction Y of the muffler 100 can also be understood as the length direction of the muffler cavity 11, etc.

[0046] Considering the concave design to accommodate the compressor 200 and the sound insulation cotton 300, the radius R1 of the first projection line 131 can be reasonably controlled. For example, when 30mm≤R1≤200mm, the compressor 200 with a diameter of 60mm~400mm can be adapted to the muffler 100.

[0047] In some embodiments, please refer to Figure 1 The surface of the silencer 10 also includes a second surface 14 opposite to the first surface 13. The middle portion of the second surface 14, along a predetermined direction X, protrudes towards the side opposite to the silencer cavity 11. Therefore, in the silencer 10 of this application, one surface has a concave structure, and the other surface has an outward convex design. The outward convex design of the middle portion of the second surface 14 allows the two ends of the silencer 10 to be closer to the compressor 200, which is beneficial for structural avoidance and leaves more design space for other pipelines. At the same time, the outward convex design of the middle portion of the second surface 14 also helps to increase the cross-sectional area inside the silencer cavity 11, increase the expansion ratio of the silencer 100, and improve the silencing effect.

[0048] It should be noted that the second surface 14 refers to the surface of the silencer 10 that faces away from the first surface 13. When the second surface 14 is designed to bulge outward, it can protrude outward along the middle part of the circumference of the compressor 200. The shape of the bulging second surface 14 can be designed in various ways, such as, but not limited to, an arc-shaped surface, an inverted trapezoidal surface, etc.

[0049] Further, please refer to Figure 3 The projection of the second surface 14 onto a plane perpendicular to the height direction Y of the muffler 100 is defined as the second projection line 141. The second projection line 141 is constructed as an arc curve convex toward the side facing away from the muffler cavity 11. Thus, the second surface 14 is part of a cylindrical surface, which makes it easier for the portion of the muffler 100 facing away from the compressor 200 to avoid interference. Therefore, while ensuring effective assembly of other structures, the expansion ratio of the muffler 100 can be designed to be larger, increasing its noise reduction and improving the noise reduction effect.

[0050] It should be noted that when the second surface 14 is part of a cylindrical surface, the first surface 13 can also be part of a cylindrical surface, that is, the first projection line 131 of the first surface 13 is a circular arc curve. The first projection line 131 and the second projection line 141 can be concentric or non-concentric.

[0051] To ensure the avoidance effect, the maximum value d1 of the concave depth of the first surface 13 and the maximum value d2 of the convex depth of the second surface 14 can be limited. For example, based on the radius r of the air intake structure on the muffler 100, r / 2≤d1≤2r; and r / 2≤d2≤2r, etc. The determination of d1 and d2 can be achieved by connecting the two ends of the first projection line 131 and the two ends of the second projection line 141 respectively; then, points are taken on the first projection line 131 and the second projection line 141 respectively, and perpendicular lines are drawn to the corresponding connecting lines. The dimensions of the longest perpendicular lines are d1 and d2, respectively.

[0052] Furthermore, please refer to Figure 3 The projection of the first surface 13 onto a plane perpendicular to the height direction Y of the muffler 100 is defined as the first projection line 131. The first projection line 131 is a circular arc, and its center is concentric with the center of the second projection line 141. This concentric arrangement makes the first surface 13 and the second surface 14 parallel, which is beneficial for the processing of the muffler 10; at the same time, it also helps the muffler 100 to be installed outside the compressor 200 without easily causing interference to other structures.

[0053] It should be noted that when the first surface 13 and the second surface 14 are coaxially arranged cylindrical curved surfaces, the inner walls of the silencing cavity 11 corresponding to the first surface 13 and the second surface 14 can also be coaxially arranged cylindrical curved surfaces. At the same time, in order to obtain a larger space for the silencing cavity 11, the wall thickness of the silencing body 10 can be designed to be as thin as possible while meeting the structural strength requirements.

[0054] In some embodiments, please refer to Figure 1 The surface of the muffler 10 also includes two side surfaces 16 spaced apart between the first surface 13 and the second surface 14, each side surface 16 protruding in an arc towards the side facing away from the muffler cavity 11. Therefore, both ends of the muffler 10 along the predetermined direction X are arc-shaped structures, making it easier for the ends of the muffler 10 to avoid structural overlap. It should be noted that the inner wall of the muffler cavity 11 corresponding to the side surface 16 can also be designed with an arc-shaped structure.

[0055] For specific embodiments, please refer to Figure 1The first surface 13, the second surface 14, and the two side surfaces 16 are all part of a cylindrical curved surface, and the opposite ends of the side surfaces 16 are tangentially connected to the first surface 13 and the second surface 14, respectively. When the air intake structure on the muffler 100 is located close to the side surface 16, if the radius R0 of the side surface 16 is too small, it will affect the expansion ratio, resulting in an insignificant silencing effect; if the radius R0 of the side surface 16 is too large, the muffler 100 becomes bulky relative to the air intake structure, making the air intake structure prone to deformation during installation. Therefore, this application designs the radius R0 of the side surface 16 to be between 1.5r and 5r to balance the silencing effect and the stability of the air intake structure. Here, r is the radius of the air intake structure (such as the first pipe 20). Of course, when designing the radius R0 of the side surface 16, its value range can be designed to be between 1.5r and 3r.

[0056] In addition, when the first surface 13 and the second surface 14 are coaxial cylindrical surfaces, and the side surface 16 is half of the cylindrical surface, the relationship between the radius R0 of the side surface 16, the radius R1 on the first surface 13, and the radius R2 on the second surface 14 can be designed as: R2 = R1 + 2R0.

[0057] In some embodiments, please refer to Figure 2 The silencer 10 has two openings 12 communicating with the silencer cavity 11. Both openings 12 are located on the same side of the silencer 10. This arrangement of the two openings 12 on the same side ensures that the pipe structures communicating with the silencer cavity 11 are arranged in the same direction. When arranging the pipe structures, one of the pipe structures does not need to bend around one side of the silencer 10, thus avoiding occupying the space of the laterally expanded silencer cavity 11. This results in a larger expansion ratio for the silencer 100, further improving the noise reduction. Of course, compared to a traditional silencer 100, while maintaining the same noise reduction (i.e., without increasing the expansion ratio), the silencer 100 with the openings 12 on the same side saves more space, allowing for a more rational design of other components of the compressor 200.

[0058] For ease of understanding, the following examples illustrate a muffler 100 with two openings 12 on the same side and a conventional muffler 100 with two openings 12 on the upper and lower sides. When the two openings 12 are on the upper and lower sides, the lower tube structure needs to bend around one side of the muffler 100 and connect with other structures above. This results in the space occupied by the tube structure on one side of the muffler 100 being unusable as a silencing cavity 11. For details, please refer to... Figure 4 .exist Figure 4 In the diagram, region A or region C represents the space that can be designed using the existing silencing cavity 11; while regions A, B, and C represent the space that can be designed using the silencing cavity 11 of this application. The cross-sectional area of ​​the existing silencing cavity 11 is S1 = πR. 2The cross-sectional area S2 of the silencing cavity 11 in this application can be calculated using the cut-and-paste method in geometry. Since the area increased by the convex side is greater than the area decreased by the concave side, S2 can be approximated as: πR 2 +2R*L=(π+2L / R)*R 2 Thus, by comparison, it can be seen that the expansion ratio of the muffler 100 set on the same side as the opening 12 is (1+2L / (πR)) times that of the existing muffler 100.

[0059] Of course, if the shortest distance between region A and region C is greater than (π-2)R, then L is greater than (π-2)R+2R=πR. In this way, the expansion ratio of the muffler 100 set on the same side of the opening 12 is more than 3 times that of the existing muffler 100.

[0060] Furthermore, the fact that the openings 12 are located on the same side avoids the need for a pipe structure below the silencer 10, allowing the silencer 10 to be extended downwards, increasing the length of the silencer cavity 11. Since the noise reduction frequency of the silencer 100 depends on the length of the silencer cavity 11, the longer the silencer cavity 11, the lower the frequency of maximum noise reduction. Therefore, having the openings 12 on the same side helps to reduce the frequency of maximum noise reduction of the silencer 100, thus better improving the problem of low-frequency sound transmission. The frequency of maximum noise reduction, f... max It is inversely proportional to the length l0 of the silencing cavity 11, such as: (n = 0, 1, 2, 3, etc.).

[0061] It should also be noted that the shape of the opening 12 can be designed in various ways, such as: the shape of the opening 12 can be circular, elliptical, square, hexagonal, etc.; of course, it can also be an irregular shape design.

[0062] Further, please refer to Figure 1 The silencer 10 has a top surface 15 on one end face along the height direction Y of the silencer 100, and two openings 12 are spaced apart on the top surface 15 along a predetermined direction X. In this way, setting the two openings 12 on the top surface 15 makes it easier to install the silencer 100 outside the compressor 200, saving more space for the assembly of other components.

[0063] It should be noted that there are multiple ways in which the two openings 12 are distributed on the top surface 15. For example, the concave radius of the first surface 13 is denoted as R1, and the convex radius of the second surface 14 is denoted as R2. In this case, the center of both openings 12 is located on an arc with a radius of (R1+R2) / 2, etc.

[0064] Furthermore, please refer to Figure 3At least one edge 151 of the top surface 15 along the preset direction X is an arc edge. The distance between the centers of the two openings 12 is denoted as L1, and the radius of the arc edge is denoted as R0, where 3R0≤L1≤5R0. The value of the distance L1 should be controlled within a reasonable range. If it is too small, it will shorten the airflow path in the silencing cavity 11, affecting the silencing effect; it will also cause the welding operations at the two openings 12 to interfere with each other. If it is too large, it will excessively increase the weight of the silencer 100, causing the pipes connected to the silencer 100 to be prone to deformation under the weight. Therefore, this application controls L1 between 3R0 and 5R0. For example, L1 can be, but is not limited to, 3R0, 3.5R0, 4R0, 5R0, etc., so that the silencer 100 can effectively balance the silencing effect and the stability of the pipe structure on the silencer 100.

[0065] For specific embodiments, please refer to Figure 3 The two edges 151 of the top surface 15 along the preset direction X are both arc edges, each half of a circle, with a radius denoted as R0. The distance between the centers of the two edges 151 is L1. Simultaneously, the first projection line 131 of the first surface 13 is a concave circle with a radius denoted as R1, and the second projection line 141 of the second surface 14 is a convex circle with a radius denoted as R2. In this case, the maximum value d1 of the concave depth of the first surface 13 and the maximum value d2 of the convex depth of the second surface 14 can be defined by the radii of the first projection line 131 and the second projection line 141, respectively, as follows:

[0066] In some embodiments, please refer to Figure 1 The silencer 100 also includes a first pipe 20 and a second pipe 30. The first pipe 20 and the second pipe 30 are respectively inserted into the two openings 12. In this way, the first pipe 20 and the second pipe 30 are used to allow the airflow from the compressor 200 to enter and exit the silencer chamber 11 to reduce noise. The structure and length of the first pipe 20 and the second pipe 30 can be designed to be exactly the same; of course, they can also be designed to be different.

[0067] It should be noted that when the first pipe 20 and the second pipe 30 are respectively inserted into the opening 12, the depth to which the two pipes can extend into the silencing cavity 11 can be consistent, which facilitates foolproof assembly. That is, either the first pipe 20 or the second pipe 30 can be used as an air inlet pipe, and the other can be used as an air outlet pipe; of course, the depth to which they extend can also be different. In addition, in other embodiments, when the first pipe 20 and the second pipe 30 are respectively inserted into the opening 12, neither extends into the silencing cavity 11.

[0068] Further, please refer to Figure 1The first pipe fitting 20 and / or the second pipe fitting 30 are provided with a flared end 21 at the end away from the silencing cavity 11. In this way, the flared end 21 facilitates the assembly of the first pipe fitting 20 and / or the second pipe fitting 30 with the external connecting pipe 400.

[0069] It should be noted that the flared section 21 refers to enlarging one end of the first pipe fitting 20 or the second pipe fitting 30 to facilitate pipe assembly. The flared section 21 can have various structural designs, such as a trumpet shape or a countersunk hole shape.

[0070] For details, please refer to Figure 2 The inner wall of the flared portion 21 is at least partially inclined, and the cross-sectional area of ​​the flared portion 21 is larger closer to the end of the first pipe fitting 20 or the second pipe fitting 30, meaning that at least one section of the flared portion 21 is a bell mouth. The inclination angle of the inner wall of the flared portion 21 can be, but is not limited to, 45°, which facilitates welding of the first pipe fitting 20 or the second pipe fitting 30 with the external connecting pipe 400. The inclined section of the flared portion 21 can be approximately 1 mm in length.

[0071] In some embodiments, please refer to Figure 2 The distance between the end of the first fitting 20 and / or the second fitting 30 away from the silencing cavity 11 and the surface of the silencing body 10 with the opening 12 is denoted as L2, where L2 ≥ 30 mm. This design avoids secondary heating at the weld points of the first fitting 20 and the second fitting 30 on the silencing body 10 when the silencer 100 is welded to the external connecting pipe 400, thus preventing the welding quality from being affected.

[0072] In some embodiments, please refer to Figure 6 One end of the first pipe fitting 20 and / or the second pipe fitting 30 that extends into the silencing cavity 11 is provided with a reversing part 22. In the two opposing cavity walls 111 of the silencing cavity 11 along a preset direction X, the opening of the reversing part 22 is positioned facing the adjacent cavity wall 111. In this way, the airflow travels a longer distance within the silencing cavity 11, improving the noise reduction effect.

[0073] It should be noted that the reversing part 22 refers to the structure that can change the flow path of the airflow in the silencing cavity 11, which can be a bending structure, cut structure, etc. on the first pipe 20 or the second pipe 30.

[0074] Furthermore, "adjacent cavity wall 111" should be understood as: having two cavity walls 111 in the preset direction X, which, for ease of understanding, are distinguished as a left cavity wall 111 and a right cavity wall 111. Figure 6In this configuration, if the first pipe fitting 20 has a reversing section 22, the opening of the reversing section 22 is positioned facing the left cavity wall 111; if the second pipe fitting 30 has a reversing section 22, the opening of the reversing section 22 is positioned facing the right cavity wall 111; or, if both the first pipe fitting 20 and the second pipe fitting 30 have reversing sections 22, the opening of the reversing section 22 of the first pipe fitting 20 faces the left cavity wall 111, and the opening of the reversing section 22 of the second pipe fitting 30 faces the right cavity wall 111.

[0075] Further, please refer to Figure 6 The reversing section 22 includes a cut surface 221. The cut surface 221 is inclinedly disposed on the first pipe 20 or the second pipe 30, and in the two opposing cavity walls 111 of the silencing cavity 11 along a preset direction X, the cut surface 221 is disposed facing the cavity wall 111 adjacent to it. In this way, by providing the cut surface 221 in the first pipe 20 or the second pipe 30, the flow path of the airflow in the silencing cavity 11 is changed, thereby improving the silencing effect.

[0076] In some embodiments, please refer to Figure 1 and Figure 5 Each opening 12 has a flange 17 circumferentially provided on its edge 151. The flange 17 is connected to the first pipe fitting 20 or the second pipe fitting 30. In this way, the flange 17 increases the contact area between the first pipe fitting 20 or the second pipe fitting 30, thereby enhancing the reliability of the welding.

[0077] It should be noted that each flange 17 can extend along the height direction Y of the silencer 100, so that the first pipe fitting 20 and the second pipe fitting 30 can be arranged in a parallel straight pipe manner, so as to leave the maximum design space for the pipeline design.

[0078] Further, please refer to Figure 5 Two folded edges 171 are connected between the two flanges 17. The two folded edges 171 are attached to each other and sealed together. This not only helps to enhance the structural strength of the flanges 17, but also prevents air leakage between the two flanges 17.

[0079] In some embodiments, the silencer 10 can be designed as a one-piece structure; or it can be designed as a modular structure. For example: please refer to Figure 1 The silencer 10 includes a cylindrical body 1a and a first end cap 1b and a second end cap 1c respectively covering the opposite ends of the cylindrical body 1a. The first end cap 1b and the second end cap 1c can be connected to the cylindrical body 1a in various ways, such as, but not limited to, bolt connection, snap-fit, welding, and bonding.

[0080] In some embodiments, please refer to Figure 7 and Figure 8An air conditioner includes a compressor 200 and a silencer 100 as described above. The silencer 100 is in communication with the compressor 200, and a first surface 13 is disposed facing the compressor 200.

[0081] The aforementioned air conditioner uses the above-mentioned muffler 100. Because the middle portion of the first surface 13 along the circumference of the compressor 200 is recessed towards the muffler cavity 11, the cross-sectional area of ​​the muffler cavity 11 is increased when designing the muffler 100. This allows for sufficient space between the first surface 13 and the compressor 200 to accommodate the sound insulation cotton 300, facilitating its assembly. Simultaneously, the recessed design of the middle portion of the first surface 13 allows the two ends of the muffler body 10 along the preset direction X to be positioned closer to the compressor 200. Therefore, even if the size of the muffler cavity 11 is increased along the preset direction X, it can still ensure that the two ends of the muffler body 10 are close to the compressor 200, reducing the space occupied by the compressor 200 and providing reasonable assembly space for other piping designs. Thus, through the structural design of the muffler 100 of this application, both the muffler 100's noise reduction performance and the assembly of the compressor 200's surrounding structure can be effectively balanced.

[0082] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0083] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

[0084] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0085] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0086] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0087] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0088] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

Claims

1. A muffler (100) for a compressor (200) of an air conditioner, characterized in that, include: The silencer (10) has a silencer cavity (11) inside, and the surface of the silencer (10) includes a first surface (13) for facing the compressor (200); Wherein, the middle portion of the first surface (13) along a preset direction (X) is recessed toward the silencing cavity (11), and the preset direction (X) is configured as the circumferential direction of the compressor (200).

2. The muffler (100) according to claim 1, characterized in that The projection of the first surface (13) in a plane perpendicular to the height direction (Y) of the muffler (100) is defined as the first projection line (131), which is constructed as an arc curve concave toward the muffler cavity (11).

3. The silencer (100) according to claim 1 or 2, characterized in that The surface of the silencer (10) also includes a second surface (14) opposite to the first surface (13), and the middle portion of the second surface (14) along the preset direction (X) protrudes toward the side opposite to the silencer cavity (11).

4. The muffler (100) according to claim 3, characterized in that The projection of the second surface (14) in a plane perpendicular to the height direction (Y) of the muffler (100) is defined as the second projection line (141), which is constructed as an arc curve protruding toward the side opposite to the muffler cavity (11).

5. The silencer (100) according to claim 4, characterized in that, The projection of the first surface (13) in a plane perpendicular to the height direction (Y) of the muffler (100) is defined as the first projection line (131), which is an arc curve and whose center is concentric with the center of the second projection line (141).

6. The muffler (100) of claim 3, characterized in that The surface of the silencer (10) also includes two side surfaces (16) spaced between the first surface (13) and the second surface (14), each side surface (16) protruding in an arc toward the side opposite to the silencer cavity (11).

7. The muffler (100) of claim 1, wherein, The silencer (10) has two openings (12) that communicate with the silencer cavity (11), and the two openings (12) are located on the same side of the silencer (10).

8. The muffler (100) according to claim 7, characterized in that The silencer (10) includes a top surface (15) on one end face along the height direction (Y) of the silencer (100), and two openings (12) are spaced apart on the top surface (15) along the preset direction (X).

9. The muffler (100) of claim 8, characterized in that At least one edge (151) of the top surface (15) along the preset direction (X) is an arc edge, the distance between the centers of the two openings (12) is denoted as L1, and the radius of the arc edge is denoted as R0, wherein 3R0≤L1≤5R0.

10. The muffler (100) of claim 7, characterized in that, The silencer (100) further includes a first pipe (20) and a second pipe (30), the first pipe (20) and the second pipe (30) being respectively inserted into the two openings (12).

11. The muffler (100) of claim 10, characterized in that The first pipe fitting (20) and / or the second pipe fitting (30) have a flared end (21) at the end away from the silencing cavity (11); and / or, The distance between the end of the first pipe fitting (20) and / or the second pipe fitting (30) away from the silencing cavity (11) and the surface of the silencing body (10) having the opening (12) is denoted as L2, where L2 ≥ 30 mm.

12. The muffler (100) of claim 10, characterized in that, One end of the first pipe fitting (20) and / or the second pipe fitting (30) extending into the silencing cavity (11) is provided with a reversing part (22). In the two opposing cavity walls (111) of the silencing cavity (11) along the preset direction (X), the opening of the reversing part (22) is arranged facing the cavity wall (111) adjacent to it.

13. The muffler (100) of claim 12, characterized in that The reversing part (22) includes a cut surface (221), which is inclinedly disposed on the first pipe (20) or the second pipe (30). In the two opposing cavity walls (111) of the silencing cavity (11) along the preset direction (X), the cut surface (221) is disposed facing the cavity wall (111) adjacent to it.

14. The muffler (100) of claim 11, characterized in that, Each of the openings (12) has a flange (17) circumferentially provided on its edge (151), and the flange (17) is connected to the first pipe fitting (20) or the second pipe fitting (30).

15. An air conditioner characterized by comprising: include: Compressor (200); The muffler (100) according to any one of claims 1-14, the muffler (100) is in communication with the compressor (200), and the first surface (13) is disposed toward the compressor (200).

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