Silencer assembly

Abstract

The utility model relates to the technical field of silencers, and discloses a silencer assembly which comprises a cylinder body, stamping end covers are fixed at two ends of the cylinder body, pressing grooves are arranged on outer side surfaces of the stamping end covers in an array mode, connecting sleeves are fixed on the stamping end covers, silencing hole pipes are fixed in the connecting sleeves, red copper transition terminals are fixed at one ends of the silencing hole pipes, and the red copper transition terminals are fixed at the other ends of the silencing hole pipes. Silencing holes are formed in the silencing hole pipe in an array mode, and the stamping end cover is connected with the cylinder body in a welded mode. After the silencer assembly and the cylinder body are integrally formed, the stamping end covers which are independently formed are arranged at the two ends of the cylinder body, cold hardening in the material spinning process is reduced, the material cracking defect is avoided, the silencer avoids repeated spinning and rolling, the production cost is reduced, the machining efficiency is improved, the combination modes of the two ends of the cylinder body are diversified, and the practicability is high. The silencer assembly is suitable for various silencer structures, the stamping end cover is independently connected with the silencing hole pipe and the barrel in a welded mode, operation is easy, the production difficulty is lowered, and the service life of the silencer assembly is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of muffler technology, specifically a muffler assembly. Background Technology

[0002] The "stainless steel muffler" commonly used in air conditioning refrigeration systems on the market is made by spinning and closing a section of stainless steel welded pipe at both ends to form a muffler expansion chamber that is thick in the middle and gradually tapers at both ends. Then, in a tunnel furnace, a stainless steel "muffler hole pipe" and a "copper transition terminal" on the end face of the muffler hole pipe are welded to the spinning and closing part to form the muffler component.

[0003] In the prior art, such as the application number CN202220964482.2, the disclosed title is: A stainless steel muffler and copper tube welded structure, which includes a stainless steel muffler, a copper plug and a copper tube, wherein the front end of the copper plug is sleeved on the outer side of the rear end of the copper tube, and the front end of the stainless steel muffler is sleeved on the outer side of the rear end of the copper plug.

[0004] However, in the existing technology, such as the above-mentioned muffler production process, due to cost factors, the materials used are all stainless steel welded pipes. During the spinning and forming process, the material is very easy to work harden. Under this condition, material cracking defects occur frequently, especially at the weld of the pipe body. Because the material itself has insufficient elongation capacity at the weld, the cracking phenomenon is particularly serious, often leading to leakage of muffler parts on the market and causing quality accidents.

[0005] To spin-form stainless steel welded pipes into a sound-absorbing expansion chamber that is "thick in the middle and thin at both ends", CNC machine tools are often used to roll and form the pipes through multiple cycles. This method is inefficient, has high forming costs, and causes severe "work hardening" of the metal during processing, resulting in prominent stress concentration defects after forming. Utility Model Content

[0006] The purpose of this invention is to provide a muffler assembly to solve the problems in the prior art.

[0007] The objective of this utility model can be achieved through the following technical solutions:

[0008] A silencer assembly includes a cylindrical body with stamped end caps fixed at both ends. The outer surface of the stamped end caps is provided with an array of pressure grooves. A connecting sleeve is fixed on the stamped end caps. A silencer hole tube is fixed inside the connecting sleeve. A copper transition terminal is fixed at one end of the silencer hole tube, and the other end is located inside the cylindrical body.

[0009] The silencing hole tube is provided with an array of silencing holes, and the stamped end cap is connected to the cylinder by welding.

[0010] Furthermore, a sealing ring is fixed between the silencing hole tube and the connecting sleeve, and a ring plate is fixed to the inner wall of the copper transition terminal. The ring plate is located inside the silencing hole tube, and the diameter of the silencing hole tube is smaller than that of the cylinder.

[0011] Furthermore, one end of the cylinder is fixedly connected to a stamped end cap, and the other end adopts a spun tapered end structure.

[0012] Furthermore, the stamped end cap is provided with a limiting groove in an array, and the outer wall of the silencing hole tube is fixed with a limiting block in an array, and the limiting block is engaged with the limiting groove.

[0013] Furthermore, a gasket for sealing is fixedly provided at one end of the silencing tube, and the gasket is located outside the copper transition terminal.

[0014] Furthermore, the end of the silencing tube is provided with a connecting hole, and sound-absorbing cotton is filled between the two silencing tubes.

[0015] The beneficial effects of this utility model are:

[0016] 1. The muffler assembly of this utility model has a cylinder body that is integrally formed, and the two ends of the cylinder body are independently formed stamped end caps, which reduces the cold work hardening of the material spinning process, avoids material cracking defects, and the muffler avoids multiple spinning and rolling, reducing production costs and improving processing efficiency.

[0017] 2. The silencer assembly of this utility model has various combination methods at both ends of the cylinder, which is suitable for the structure of various silencers. The stamped end cap is welded separately to the silencer hole tube and the cylinder, which simplifies the operation, reduces the production difficulty, and improves the service life of the silencer assembly. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the muffler assembly in Embodiment 1 of this utility model;

[0020] Figure 2 This is a cross-sectional view of the muffler assembly in Embodiment 1 of this utility model;

[0021] Figure 3 This is a schematic diagram of the muffler assembly in Embodiment 2 of this utility model;

[0022] Figure 4 This is a cross-sectional view of the muffler assembly in Embodiment 2 of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the prior art spin-formed muffler assembly of this utility model.

[0024] The annotations in the attached figures are explained as follows:

[0025] 1. Cylinder body; 2. Sound-absorbing cotton; 3. Washer; 4. Limiting groove; 5. Limiting block; 6. Connecting hole; 11. Pressing groove; 12. Stamped end cap; 13. Connecting sleeve; 14. Silencing hole tube; 15. Copper transition terminal; 16. Sealing ring; 17. Ring plate; 18. Silencing hole. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1:

[0028] A silencer assembly, such as Figures 1-2 As shown, the muffler assembly includes a cylinder 1, with stamped end caps 12 fixedly provided at both ends of the cylinder 1. The outer surface of the stamped end caps 12 is provided with an array of pressure grooves 11. The pressure grooves 11 are generated by stamping to form regularly arranged protrusions and depressions. The stamping process is accurate in size. The stamped end caps 12 and the cylinder 1 are connected by welding. The welding includes laser welding or argon arc welding.

[0029] A connecting sleeve 13 is fixedly provided on the stamping end cover 12. A silencing hole tube 14 is fixedly provided inside the connecting sleeve 13. A copper transition terminal 15 is fixedly provided at one end of the silencing hole tube 14, and the other end is located inside the cylinder 1. An array of silencing holes 18 are opened on the silencing hole tube 14.

[0030] A sealing ring 16 is fixed between the silencing hole tube 14 and the connecting sleeve 13 to seal the gap. A ring plate 17 is fixed on the inner wall of the copper transition terminal 15. The ring plate 17 is located inside the silencing hole tube 14. The silencing hole tube 14 and the stamped end cover 12 are placed in the furnace and brazed with filler to fix the silencing hole tube 14 and the stamped end cover 12.

[0031] The cylinder 1 has an expansion cavity structure. The diameter of the silencing pipe 14 is smaller than that of the cylinder 1. When the cooling medium flows in from one end of the cylinder 1 and out from the other end, the noise generated during the flow propagates in the pipe. When the noise waves enter the expansion chamber, due to the sudden expansion and contraction of the pipe cross-section, the sound waves are reflected and superimposed, causing the sound wave energy to disperse, thereby achieving the purpose of noise reduction. At the same time, the design of the silencing pipe 14 also causes interference in the propagation of sound waves, further reducing the intensity of the noise.

[0032] The ends of the copper transition terminal 15 and the silencer tube 14 are brazed with filler in the furnace to form the entire "silencer component" after the welding is completed.

[0033] In this embodiment, one end of the cylinder 1 adopts a stamped end cap 12 structure, and the other end adopts an existing spinning gradient closing method, as shown in the figure below. Figure 5 As shown, there are many ways to combine them.

[0034] Example 2:

[0035] like Figure 3 , Figure 4 As shown, the stamping end cover 12 has an array of limiting grooves 4 inside, and the outer wall of the silencing hole tube 14 is fixed with an array of limiting blocks 5. When the silencing hole tube 14 is inserted into the stamping end cover 12, the limiting block 5 engages with the limiting groove 4, thereby limiting the rotation of the silencing hole tube 14, improving the stability of the silencing hole tube 14, and preventing the silencing hole tube 14 from rotating and damaging the connection between the stamping end cover 12 and the silencing hole tube 14.

[0036] A washer 3 is fixedly provided at one end of the silencer tube 14. The washer 3 is located outside the copper transition terminal 15 to seal the connection gap between the copper transition terminal 15 and the silencer tube 14, ensuring the sealing of the silencer assembly and ensuring the silencer's noise reduction effect.

[0037] The end of the silencing tube 14 is provided with a connecting hole 6, and the space between the two silencing tubes 14 is filled with sound-absorbing cotton 2 to accelerate the absorption of sound waves in the cylinder 1 and achieve good sound absorption.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A silencer assembly comprising a cylinder (1), characterized in that The cylinder (1) is fixed with stamped end caps (12) at both ends. The outer side of the stamped end caps (12) is provided with pressure grooves (11). A connecting sleeve (13) is fixed on the stamped end caps (12). A silencing hole tube (14) is fixed inside the connecting sleeve (13). A copper transition terminal (15) is fixed at one end of the silencing hole tube (14), and the other end is located inside the cylinder (1). The silencing hole tube (14) is provided with an array of silencing holes (18), and the stamped end cap (12) is connected to the cylinder (1) by welding.

2. A muffler assembly according to claim 1, wherein A sealing ring (16) is fixed between the silencing hole tube (14) and the connecting sleeve (13). A ring plate (17) is fixed on the inner wall of the copper transition terminal (15). The ring plate (17) is located inside the silencing hole tube (14). The diameter of the silencing hole tube (14) is smaller than that of the cylinder (1).

3. The muffler assembly of claim 1, wherein One end of the cylinder (1) is fixedly connected to a stamped end cap (12), and the other end adopts a spinning gradient closing structure.

4. The muffler assembly of claim 1, wherein, The stamped end cap (12) is provided with a limiting groove (4) in an array, and the outer wall of the silencing hole tube (14) is fixed with a limiting block (5), which is engaged with the limiting groove (4).

5. A silencer assembly according to claim 4, wherein One end of the silencing tube (14) is fixedly provided with a gasket (3) for sealing, and the gasket (3) is located outside the copper transition terminal (15).

6. A muffler assembly according to claim 4 wherein, The end of the silencing tube (14) is provided with a connecting hole (6), and sound-absorbing cotton (2) is filled between the two silencing tubes (14).

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