Silencers and air conditioners

Abstract

A silencer and an air conditioner including a cylindrical body (1), the cylindrical body (1) being provided with a sound absorbing chamber (11), a sound absorbing plate (2) being provided within the sound absorbing chamber (11), and limiting protrusions (12) being provided on the inner wall of the sound absorbing chamber (11), the limiting protrusions (12) being in contact with both sides of the sound absorbing plate (2) so as to limit the movement of the sound absorbing plate (2) within the sound absorbing chamber (11). The limiting protrusions (12) can make the connection between the sound absorbing plate (2) and the cylindrical body (1) more robust.

Description

[Technical field]

[0001] Related Applications This application claims priority to a Chinese patent application filed on January 7, 2021, bearing application number 202120040590.6 and titled "Muffler and Air Conditioner," the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of air conditioning components, and in particular to silencers and air conditioning systems. [Background technology]

[0003] In the field of cooling technology, the problems of vibration and noise in the pipelines of air conditioners have already become major challenges in product development. In order to solve the above problems, silencers are usually installed in the equipment to reduce the vibration and noise of the pipelines of air conditioners.

[0004] In order to further reduce the noise generated when the refrigerant medium passes through the muffler, a sound absorbing plate is usually provided inside the cylinder of the muffler, and the sound absorbing plate and the cylinder are fixed by welding. However, welding is prone to problems such as poor welding and welding leaks, which reduces the connection strength between the sound absorbing plate and the cylinder. There is a possibility that the connection between the sound absorbing plate and the cylinder will break due to an impact from the refrigerant medium. Summary of the Invention

[0005] In view of this, there is a need to provide a cylinder and an air conditioner that solves the problem in the prior art that the connection between the sound absorbing plate and the cylinder is not sufficiently robust.

[0006] The present application provides a sound muffler including a cylindrical body, the cylindrical body being provided with a sound absorbing chamber, a sound absorbing plate being provided within the sound absorbing chamber, and a limiting protrusion being provided on an inner wall of the sound absorbing chamber, the limiting protrusion being abutted against both sides of the sound absorbing plate so as to limit the movement of the sound absorbing plate within the sound absorbing chamber.

[0007] In one embodiment of the present application, the limiting protrusion is formed by protruding from the side wall of the cylindrical body along the radial direction of the cylindrical body, thus greatly reducing the difficulty of processing the limiting protrusion.

[0008] In one embodiment of the present application, the maximum height of the limiting protrusion protruding from the inner wall of the sound-absorbing chamber is 0.5mm to 0.8mm. Since the maximum height of the limiting protrusion protruding from the inner wall of the sound-absorbing chamber is 0.5mm or more, it is advantageous for the limiting protrusion to exert a good sound-absorbing effect on the sound-absorbing plate. Meanwhile, since the maximum height of the limiting protrusion protruding from the inner wall of the sound-absorbing chamber is 0.8mm or less, it is advantageous for reducing the difficulty of processing the limiting protrusion.

[0009] In one embodiment of the present application, the limiting protrusions abutting on either side of the sound-absorbing plate include a plurality of cams spaced apart from one another, the cams being uniformly distributed along the circumferential direction of the sound-absorbing chamber, the cams being easy to process, and the processing of the cylinder is not so great that the cylinder is prevented from being significantly deformed and broken.

[0010] In one embodiment of the present application, the sound absorbing plate is disposed in the middle of the cylinder, the peripheral wall of the sound absorbing plate is abutted against the inner wall of the sound absorbing chamber, and the sound absorbing plate is provided with a number of through holes passing through the sound absorbing plate, so that the sound absorbing plate has a better sound absorbing effect.

[0011] In one embodiment of the present application, the sound absorbing plate includes a circular bottom plate and a side plate surrounding the periphery of the bottom plate, and the outer peripheral wall of the side plate is firmly engaged with the inner wall of the sound absorbing chamber. This increases the contact area between the sound absorbing plate and the inner wall of the sound absorbing chamber, thereby making the connection between the sound absorbing plate and the inner wall of the sound absorbing chamber more robust. In addition, the presence of the side plate can make the sound absorbing plate less likely to tilt during the installation process, improving the assembly accuracy of the entire silencer.

[0012] The through holes are concentrated in the central region of the bottom plate, and when the radius of the bottom plate is R and the central region is defined as a region surrounded by a circle whose center is the center of the bottom plate and whose radius is r, r≦R / 2. By doing so, the distribution of the through holes on the sound-absorbing plate becomes more concentrated, and the entire silencer has a better sound-absorbing effect.

[0013] In one embodiment of the present application, the cylinder is made of stainless steel material, and the muffler further includes a connection segment and a transition segment connecting the connection segment and the cylinder, the inner diameter of the connection segment is smaller than the inner diameter of the cylinder, a copper bush is fitted on the outside of the connection segment, and the length of the copper bush fitted on the connection segment is 60% or less of the total length of the copper bush. By providing connection segments with small inner diameters at both ends of the cylinder, connection ports with small inner diameters can be formed at both ends of the cylinder, so that the size of both of the two connection segments can be matched to the size of the pipe port of the pipeline (not shown) inside the air conditioner, and further, it is easy to fixedly connect the muffler and the pipeline inside the air conditioner. Fitting the copper bush on the outside of the connection segment is advantageous to better welding the muffler and the pipeline inside the air conditioner.

[0014] In one embodiment of the present application, a step is provided on the outer wall of the connection segment at one end away from the cylindrical body, and the copper bush is connected to the step. By providing the step, the copper bush can be positioned on the connection segment more easily, and the assembly accuracy of the copper bush and the connection segment can be improved.

[0015] In one embodiment of the present application, the step is provided with a chamfer on the side away from the axis of the connecting segment, so that burrs can be avoided from being generated on the edge of the step on the side away from the axis of the connecting segment during the step processing process.

[0016] The present application further provides an air conditioning device, comprising a silencer according to any of the above embodiments.

[0017] In the muffler and air conditioner provided by the present application, the inner wall of the muffler chamber is provided with a limiting protrusion, and the limiting protrusions are provided on both sides of the sound-absorbing plate, so that the limiting protrusions play a good limiting role for the sound-absorbing plate and prevent the sound-absorbing plate from moving in the muffler chamber, thereby strengthening the connection between the sound-absorbing plate and the cylinder. Therefore, the muffler provided by the present application solves the problem in the prior art that the connection between the sound-absorbing plate and the cylinder is not strong enough. [Brief description of the drawings]

[0018] [Figure 1] FIG. 2 is a cross-sectional view of a silencer according to an embodiment of the present application. [Diagram 2] FIG. 2 is a partially enlarged view of A shown in FIG. [Diagram 3] FIG. 2 is a top view of a sound-absorbing panel according to an embodiment of the present application.

[0019] 1 cylinder, 11 sound absorbing chamber, 12 limiting protrusion, 121 cam, 2 sound absorbing plate, 21 through hole, 22 bottom plate, 221 central region, 23 side plate, 3 connecting segment, 31 step, 32 chamfer, 4 transition segment, 5 copper bush. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] The technical aspects of the embodiments of the present application will be described below clearly and completely with reference to the drawings in the embodiments of the present application, but it goes without saying that the described embodiments are merely some embodiments of the present application, and are not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0021] It should be noted that when an assembly is said to be "built into" another assembly, it may be built directly into the other assembly, or there may be an intervening assembly present. When an assembly is said to be "mounted" on another assembly, it may be mounted directly on the other assembly, or there may be an intervening assembly present at the same time. When an assembly is said to be "fastened" to another assembly, it may be fastened directly to the other assembly, or there may be an intervening assembly present at the same time.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art of this application. In this specification, the terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. As used herein, the term "and / or" includes one or more of any and all combinations of the associated items.

[0023] As shown in Figures 1 to 3, the present application provides a silencer mainly applied to air conditioners. Specifically, the silencer includes a cylinder 1, a connection segment 3, and a transition segment 4 connecting the connection segment 3 and the cylinder 1. The cylinder 1 is provided with a sound-absorbing chamber 11, and a sound-absorbing plate 2 is provided in the sound-absorbing chamber 11. The inner wall of the sound-absorbing chamber 11 is provided with a limiting protrusion 12, which abuts on both sides of the sound-absorbing plate 2 so as to limit the movement of the sound-absorbing plate 2 in the sound-absorbing chamber 11. The sound-absorbing plate 2 is usually provided in the middle of the cylinder 1, and the peripheral wall of the sound-absorbing plate 2 abuts on the inner wall of the sound-absorbing chamber 11. In addition, the sound-absorbing plate 2 is provided with a plurality of through holes 21 penetrating the sound-absorbing plate 2. In this way, the sound-absorbing plate 2 has a better sound-absorbing effect.

[0024] In one embodiment, the limiting protrusion 12 may be formed by protruding from the side wall of the cylinder 1 along the radial direction of the cylinder 1. In this way, the processing difficulty of the limiting protrusion 12 is greatly reduced, and after the sound-absorbing plate 2 is assembled into the sound-absorbing chamber 11, the side walls of the cylinder 1 on both sides of the sound-absorbing plate 2 can be pressed and processed along the radial direction of the cylinder 1 to form the limiting protrusion 12, that is, the assembly of the silencer is made easier. The limiting protrusion 12 may be welded to the inner wall of the silencer, and the welding difficulty of the limiting protrusion 12 is much lower than the welding difficulty of the sound-absorbing plate 2, the welding between the limiting protrusion 12 and the inner wall of the cylinder 1 is more robust, and the limiting protrusion 12 is less likely to move even if the sound-absorbing plate 2 is impacted by the refrigerant. No matter what molding method the limiting protrusion 12 is formed in, the connection between the sound-absorbing plate 2 and the cylinder 1 can be made more robust. That is, the silencer provided by this application solves the problem in the prior art that the connection between the sound-absorbing plate 2 and the cylinder 1 is not sufficiently robust.

[0025] Furthermore, the maximum height of the limiting protrusion 12 protruding from the inner wall of the sound-absorbing chamber 11 is 0.5 mm to 0.8 mm. Since the maximum height of the limiting protrusion 12 protruding from the inner wall of the sound-absorbing chamber 11 is 0.5 mm or more, this is advantageous for the limiting protrusion 12 to exert a good sound-absorbing effect on the sound-absorbing board 2. On the other hand, since the maximum height of the limiting protrusion 12 protruding from the inner wall of the sound-absorbing chamber 11 is 0.8 mm or less, this is advantageous for reducing the difficulty of processing the limiting protrusion 12.

[0026] When the limiting protrusion 12 is formed by protruding the side wall of the cylindrical body 1 along the radial direction of the cylindrical body 1, the structure of the limiting protrusion 12 may be different. In this embodiment, as shown in FIG. 1, the limiting protrusion 12 that contacts either side of the sound-absorbing plate 2 includes a plurality of cams 121 arranged at intervals, and the cams 121 are uniformly distributed along the circumferential direction of the sound-absorbing chamber 11. In this way, when the sound-absorbing plate 2 is assembled into the sound-absorbing chamber 11, the sound-absorbing plate 2 can be sandwiched at a fixed position in the sound-absorbing chamber 11 simply by pressing the uniformly distributed cams 121 at corresponding position intervals against the outside of the cylindrical body 1. The cams 121 are easy to process, and the degree of processing of the cylindrical body 1 is not high, so that the cylindrical body 1 is prevented from being greatly deformed and broken. However, the present invention is not limited to this, and the annular limiting protrusion 12 may be formed by processing an annular groove in the circumferential direction of the outer wall of the cylindrical body 1 once, so that the inner wall of the cylindrical body 1 is protruded toward the axis of the cylindrical body 1. The annular limiting protrusion 12 is processed and molded by a rotary shrink processing method, and has high processing precision.

[0027] 1 and 3, in one embodiment, the sound absorbing plate 2 includes a circular bottom plate 22 and a side plate 23 provided around the periphery of the bottom plate 22, and the outer peripheral wall of the side plate 23 is firmly engaged with the inner wall of the sound absorbing chamber 11. This increases the contact area between the sound absorbing plate 2 and the inner wall of the sound absorbing chamber 11, thereby making the connection between the sound absorbing plate 2 and the inner wall of the sound absorbing chamber 11 more robust. In addition, the presence of the side plate 23 makes it difficult for the sound absorbing plate 2 to tilt during the installation process, improving the assembly accuracy of the entire silencer.

[0028] 3, the through holes 21 are concentrated in a central region 221 of the bottom plate 22, and when the radius of the bottom plate 22 is R and the central region 221 is defined as a region surrounded by a circle having a radius of r and the center of the bottom plate 22 as its center, r≦R / 2 is satisfied. By doing so, the distribution of the through holes 21 on the sound-absorbing plate 2 becomes more concentrated, and the entire silencer has a better sound-absorbing effect.

[0029] In one embodiment, as shown in FIG. 1, the inner diameter of the connection segment 3 is smaller than the inner diameter of the cylinder 1. Specifically, the inner diameter of the transition segment 4 gradually decreases from one end connected to the cylinder 1 to the other end connected to the connection segment 3, so that the internal space located at both ends of the axial direction of the silencer gradually decreases, and the sound-absorbing plate 2 fixed in the cylinder 1 can be effectively prevented from escaping from both ends of the cylinder 1. Next, the transition segment 4 can smoothly connect the connection segment 3 and the cylinder 1, which have different inner diameters. By providing the connection segment 3 with a small inner diameter at both ends of the cylinder 1, it is possible to form a connection port with a small inner diameter at both ends of the cylinder 1, so that the size of both of the two connection segments 3 can be matched to the size of the pipe port of the pipeline (not shown) inside the air conditioner, and further, it is easy to fix the silencer and the pipeline inside the air conditioner. Usually, the cylinder 1 is made of stainless steel material to reduce the manufacturing cost of the silencer. However, since the pipeline inside the air conditioner is usually made of copper, in order to better weld the silencer and the pipeline inside the air conditioner, a copper bushing 5 is fitted to the outside of the connection segment 3. In addition, the length of the copper bushing 5 fitted to the connection segment 3 is 60% or less of the total length of the copper bushing 5.

[0030] 2, a step 31 is provided on the outer wall of one end of the connection segment 3 remote from the cylindrical body 1, and the copper bush 5 is connected to the step 31. Providing the step 31 makes it easier to position the copper sleeve on the connection segment 3, improving the assembly accuracy of the copper sleeve and the connection segment 3.

[0031] 2, a chamfer 32 is provided on the side of the step 31 away from the axis of the connection segment 3. In this way, it is possible to prevent burrs from being generated on the edge of the step 31 away from the axis of the connection segment 3 during the processing of the step 31.

[0032] The cylinder 1, the transition segment 4 and the connection segment 3 are an integrally molded structure. Specifically, when processing the silencer, first, one end of the cylinder 1 in the axial direction is subjected to a rotation shrinking process, the transition segment 4 and the connection segment 3 are processed on this one end, and then the sound absorbing plate 2 is inserted into the sound absorbing chamber 11 from the end of the cylinder 1 that has not been subjected to the rotation shrinking process, and the sound absorbing plate 2 and the inner wall of the cylinder 1 are fixedly connected, and finally, the end of the cylinder 1 that has not been subjected to the rotation shrinking process is subjected to the rotation shrinking process. After the rotation shrinking process of one end of the cylinder 1, the sound absorbing plate 2 is inserted. However, when using a brazing form, it is necessary to insert solder and then perform the rotation shrinking process on the other end of the cylinder 1. Since the rotation shrinking process involves drawing oil or saponification liquid, it is necessary to clean after the rotation shrinking is completed. If the cleaning is insufficient and oil stains are attached to the solder, it will affect the welding quality of the sound absorbing plate 2. Furthermore, when using laser welding or argon arc welding, although there is no solder, the cylinder 1 is relatively deep, so it is not easy to insert the welded joint deep into the cylinder 1. By using the limiting protrusion 12, the present application can solve the problems of contamination and convenience that exist in the conventional welding method.

[0033] The present application further provides an air conditioner, comprising a silencer according to any of the above embodiments. The silencer is fixedly connected to a pipeline inside the air conditioner by two connection segments 3 at both ends of the cylinder 1.

[0034] Each of the technical features of the above-described embodiments may be combined in any combination. For the sake of brevity, not all possible combinations of each of the technical features in the above-described embodiments have been described. However, as long as there is no contradiction in the combination of these technical features, any of them should be considered within the scope described in this specification.

[0035] Those skilled in the art should recognize that the above embodiments are merely for illustrating the present application and are not used as limitations to the present application, and any reasonable modifications and changes made to the above embodiments within the substantial spirit of the present application will fall within the scope of the protection sought by the present application.

Claims

1. The device includes a cylindrical body, the cylindrical body being provided with a sound-absorbing chamber, a sound-absorbing plate being provided within the sound-absorbing chamber, and a limiting protrusion being provided on an inner wall of the sound-absorbing chamber, the limiting protrusion being in contact with both sides of the sound-absorbing plate so as to limit the movement of the sound-absorbing plate within the sound-absorbing chamber, The sound absorbing plate includes a circular bottom plate that is disposed perpendicular to the axial direction of the cylinder, and a side plate that is disposed so as to surround the periphery of the bottom plate and bend from the periphery of the bottom plate in parallel to the axial direction of the cylinder, the circular bottom plate is provided with a plurality of through holes, and the outer peripheral wall of the side plate is firmly engaged by abutting against the inner wall of the sound absorbing chamber, The plurality of through holes are distributed in a concentrated manner within a central region of the bottom plate, and when the radius of the bottom plate is R and the central region is defined as a region surrounded by a circle having a radius r and a center at the center of the bottom plate, r≦R / 2. Silencer.

2. The silencer according to claim 1 , wherein the limiting protrusion is formed so as to protrude from a side wall of the cylindrical body along a radial direction of the cylindrical body.

3. 3. The silencer according to claim 2, wherein the limiting protrusion has a maximum height protruding from the inner wall of the silencer chamber of 0.5 mm to 0.8 mm.

4. 3. The muffler of claim 2, wherein the limiting protrusions abutting either side of the sound absorbing plate include a plurality of spaced cams, the cams being uniformly distributed around the circumference of the muffler chamber.

5. The silencer according to claim 1 , wherein the sound absorbing plate is provided in a central portion of the cylindrical body.

6. 2. The silencer of claim 1, wherein the cylindrical body is made of stainless steel, the silencer further includes a connection segment provided at both ends of the cylindrical body, and a transition segment connecting the connection segment and the cylindrical body, the inner diameter of the connection segment being smaller than the inner diameter of the cylindrical body, a copper bushing is fitted to the outside of the connection segment, and the length of the portion of the copper bushing fitted to the connection segment is 60% or less of the total length of the copper bushing.

7. 7. The silencer according to claim 6, wherein a step is provided on an outer wall of one end of the connecting segment remote from the cylindrical body, and the copper bushing is connected to the step.

8. 8. The silencer of claim 7, wherein the step is provided with a chamfer on a side thereof away from the axis of the connecting segment.

9. An air conditioning system comprising a silencer according to any one of claims 1 to 8.

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