Silencer assembly and air conditioner

Abstract

A silencer assembly (300) and an air conditioner (1000) comprising a silencer (100) and a one-way valve (200), the silencer (100) comprising a silencer body (10) and a connection port pipe (30) provided at one end of the silencer body (10), the connection port pipe (30) being directly connected to the one-way valve (200).

Description

[Technical field]

[0001] Related Applications This application claims priority to Chinese patent application having application number 202110479994.X, filed on April 30, 2021, Chinese patent application having application number 202120939797.7, filed on April 30, 2021, Chinese patent application having application number 202110479990.1, filed on April 30, 2021, and Chinese patent application having application number 202120942934.2, filed on April 30, 2021, the entire contents of which are incorporated herein by reference.

[0002] FIELD OF THE DISCLOSURE This application relates to the field of air conditioning technology, and more particularly to a silencer assembly and an air conditioner. [Background technology]

[0003] In an air conditioner, the silencer and the one-way valve are usually two separate components. When manufacturing an air conditioner, the silencer is usually connected to the one-way valve through an independent connecting pipe. However, the silencer and the one-way valve are usually made of copper, so the connecting pipe is also made of copper. This means that the air conditioner consumes a large amount of copper material, and the cost of the air conditioner also increases significantly due to the continuous rise in copper prices. Summary of the Invention

[0004] According to various embodiments of the present application, a silencer assembly and an air conditioner are provided.

[0005] The muffler assembly includes a muffler and a one-way valve, the muffler including a muffler body and a port tube provided at one end of the muffler body, the port tube being directly connected to the one-way valve.

[0006] In one embodiment, the muffler body is made of stainless steel, the connection tube is made of copper, and the one-way valve is made of copper.

[0007] In one embodiment, the silencer body has an outlet end, a port tube is matingly connected to the outside of the outlet end and welded to the outlet end, and one end of the one-way valve extends into the port tube and is welded directly to the port tube.

[0008] In one embodiment, the end of the one-way valve recessed within the port tube abuts an end face located within the port tube at the outlet end.

[0009] In one embodiment, a first outer step is provided on the outer wall of the outlet end, the first outer step is provided along the circumferential direction of the outlet end, and the connection pipe abuts against the first outer step.

[0010] In one embodiment, the length of the outlet end that enters the connection pipe is A, the length of the one-way valve that enters the connection pipe is B, and the length of the connection pipe is C, where A, B, and C satisfy the relationships: 1 / 3C≦A≦2 / 3C, 1 / 3C≦B≦2 / 3C.

[0011] In one embodiment, one end of the port tube extends into the muffler body and the other end protrudes from the end of the muffler body, and the end of the port tube protruding from the muffler body is welded directly to the one-way valve.

[0012] In one embodiment, one end of the connection tube protruding from the silencer body forms an enlarged end, and one end of the one-way valve is inserted into the enlarged end.

[0013] In one embodiment, the length of the portion of the connection port pipe that enters the silencer body is E, the total length of the silencer body is F, and E and F satisfy the relation: E≧1 / 2F.

[0014] In one embodiment, the muffler body has an inlet end and the muffler assembly further includes a first stainless steel tube, the first stainless steel tube being directly or indirectly connected to the inlet end.

[0015] In one embodiment, the inner wall of the inlet end is provided with an inner step, the first stainless steel tube is inserted into the inlet end and welded to the inner step, and the first stainless steel tube is directly connected to the inlet end.

[0016] In one embodiment, the silencer assembly includes a copper connecting member, the copper connecting member including a first copper sleeve connected to the inlet end and a second copper sleeve connected to the first stainless steel tube, the first copper sleeve being welded to the second copper sleeve, and the first stainless steel tube being indirectly connected to the inlet end via the copper connecting member.

[0017] In one embodiment, a first copper sleeve is mated with the outside of the inlet end, a second copper sleeve is mated with the outside of one end of the first stainless steel tube, and the first copper sleeve is mated with the outside of the second copper sleeve.

[0018] In one embodiment, the wall thickness of the first copper sleeve is greater than the wall thickness of the second copper sleeve, and when welding the first copper sleeve and the second copper sleeve, the position of the welding torch is biased toward the first copper sleeve.

[0019] In one embodiment, the silencer assembly further includes a second stainless steel tube having an end connected to a third copper sleeve, the third copper sleeve being connected to an end of the one-way valve remote from the silencer.

[0020] The air conditioner includes the silencer assembly described above.

[0021] The details of one or more embodiments of the application are set forth in the drawings and description below. Other features, objects, and advantages of the application will become apparent from the description, drawings, and claims. [Brief description of the drawings]

[0022] To better describe and explain the embodiments and / or examples of the inventions disclosed herein, reference may be made to one or more drawings, in which additional details or examples used to explain the drawings should not be considered as limiting the scope of any of the disclosed inventions, the embodiments and / or examples described herein, and the best mode of these inventions as understood herein.

[0023] [Figure 1] 1 is a schematic partial cross-sectional view of a silencer assembly according to one embodiment of the present application; [Diagram 2] FIG. 2 is an enlarged view of a portion M in FIG. [Diagram 3] FIG. 2 is an enlarged view of a portion N in FIG. [Figure 4] FIG. 2 is a partial cross-sectional schematic view of a silencer assembly according to another embodiment of the present application. [Diagram 5] FIG. 2 is a partial enlarged view of M' in FIG. [Figure 6] FIG. 2 is a partial enlarged view of N' in FIG. [Figure 7] 1 is a schematic configuration diagram of an air conditioner according to an embodiment of the present application.

[0024] 300 muffler assembly, 100 muffler, 200 one-way valve, 10 muffler body, 11 outlet end, 111 first outer step, 112 limiting surface, 12 inlet end, 121 inner step, 122 second outer step, 13 body portion, 30 connection port pipe, 40 first stainless steel pipe, 50 second stainless steel pipe, 60 first copper sleeve, 70 second copper sleeve, 80 third copper sleeve, 90 copper-based connection member, 400 compressor, 500 condenser, 600 throttling device, 700 evaporator, 1000 air conditioner. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] In the prior art, the muffler and the one-way valve are usually two separate components. When manufacturing an air conditioner, the muffler is usually connected to the one-way valve through an independent connecting pipe. However, the muffler and the one-way valve are usually made of copper, so the connecting pipe is also made of copper. This means that the air conditioner consumes a large amount of copper material, and the cost of the air conditioner also increases significantly due to the continuous rise in copper prices.

[0026] Example 1 1 to 3, the present application provides a muffler assembly 300. The muffler assembly 300 includes a muffler 100 and a one-way valve 200. The muffler 100 includes a muffler body 10 and a connection port pipe 30 provided at one end of the muffler body 10, and the connection port pipe 30 is directly connected to the one-way valve 200. As a result, the muffler 100 is directly connected to the one-way valve 200, which corresponds to the omission of the connection pipe in the prior art, and thus the material can be saved, and therefore the manufacturing cost can be significantly reduced. In addition, in the prior art, the muffler is connected to the one-way valve through the connection pipe, so there are two welding points between the muffler and the one-way valve, the first being the welding point between the muffler and the connection pipe, and the second being the welding point between the connection pipe and the one-way valve. On the other hand, in the present application, the silencer 100 is directly connected to the one-way valve 200, so there is only one weld between the silencer 100 and the one-way valve 200. That is, compared with the prior art, the silencer assembly 300 of the present application has fewer welds. If there are many welds, welding must be performed multiple times during processing, which complicates the process, reduces manufacturing efficiency, and is prone to leaks at the welds, so the presence of multiple welds increases the probability of leaks. Since the silencer assembly 300 of the present application has fewer welds, it not only simplifies the processing process and improves manufacturing efficiency, but also reduces the probability of leaks at the welds and improves the reliability of the connection between the silencer 100 and the one-way valve 200. In addition, since one connecting member is omitted, the overall length of the silencer assembly 300 is shortened, which is advantageous for space saving, and therefore the silencer assembly 300 can be easily attached to an air conditioner.

[0027] Furthermore, the silencer body 10 is made of stainless steel, the connection port tube 30 is made of copper, and the one-way valve 200 is made of copper. Since stainless steel has good rigidity and is inexpensive, using stainless steel for the silencer body 10 can significantly reduce the cost of the silencer assembly 300. Since the connection port tube 30 is made of copper, it is easy to directly connect the silencer 100 and the one-way valve 200 made of copper.

[0028] The silencer body 10 includes a body portion 13, both ends of which are tapered to form an inlet end 12 and an outlet end 11, so that the inner diameters of the inlet end 12 and the outlet end 11 are both smaller than the inner diameter of the body portion 13. After the refrigerant medium enters the body portion 13 from the inlet end 12, the inner diameter becomes larger, and the flow rate decreases. In other words, a buffer effect is exerted on the refrigerant medium, and the noise generated by the flow of the refrigerant medium can be reduced.

[0029] The connection port pipe 30 is connected to the outlet end 11. That is, the one-way valve 200 is connected to the outlet end 11 side of the silencer body 10. By providing the one-way valve 200 in this manner, the refrigerant medium cannot flow from the one-way valve 200 to the silencer 100, but only flows from the silencer 100 to the one-way valve 200. In this embodiment, the connection port pipe 30 is fitted and connected to the outside of the outlet end 11 and welded to the outlet end 11, and one end of the one-way valve 200 enters the connection port pipe 30 and is directly welded to the connection port pipe 30. The connection port pipe 30 is fitted and connected to the outside of the outlet end 11. That is, the outlet end 11 enters the connection port pipe 30, and the end face of the outlet end 11 located in the connection port pipe 30 forms a limiting surface 112, which can limit the length of the one-way valve 200 entering the connection port pipe 30, making it very easy to assemble the one-way valve 200 before welding. Furthermore, the end of the one-way valve 200 that is inserted into the connection port pipe 30 abuts against the limiting surface 112 of the outlet end 11, thereby making the connection between the silencer 100 and the one-way valve 200 robust.

[0030] A first outer step 111 is provided on the outer wall of the outlet end 11, and the first outer step 111 is provided along the circumferential direction of the outlet end 11, and the connection port pipe 30 abuts against the first outer step 111. By providing the first outer step 111 in this manner, the assembly position of the connection port pipe 30 is limited, making it very easy to assemble the connection port pipe 30 and the silencer body 10 before welding.

[0031] In this embodiment, the silencer body 10 is made of stainless steel, the connection port tube 30 is made of copper, and the one-way valve 200 is made of copper. Therefore, the silencer body 10 and the connection port tube 30 are welded by furnace brazing, and the connection port tube 30 and the one-way valve 200 are welded by flame brazing. When manufacturing and processing the silencer assembly 300, the connection port tube 30 is assembled to one end of the silencer body 10, and then the silencer body 10 and the connection port tube 30 are furnace brazed to obtain the silencer 100. Then, the connection port tube 30 of the silencer 100 and one end of the one-way valve 200 are assembled, and then the connection port tube 30 and the one-way valve 200 are flame brazed.

[0032] 2 , the length of the outlet end 11 that enters the port pipe 30 is A, the length of the one-way valve 200 that enters the port pipe 30 is B, and the length of the port pipe 30 is C, and A, B, and C satisfy the following relationships: 1 / 3C≦A≦2 / 3C, 1 / 3C≦B≦2 / 3C. This ensures that there is a certain overlap length between the outlet end 11 and the port pipe 30, and that there is a certain overlap length between the one-way valve 200 and the port pipe 30, so that high connection strength is ensured between the outlet end 11 and the port pipe 30, and that there is a certain overlap length between the one-way valve 200 and the port pipe 30, and further ensures the strength of the structure of the muffler assembly 300.

[0033] Furthermore, the silencer assembly 300 further includes a first stainless steel pipe 40, which is directly connected to the inlet end 12 or indirectly connected to the inlet end 12 via a copper connecting member. The case where the first stainless steel pipe 40 is indirectly connected to the inlet end 12 via a copper connecting member 90 will be described in detail below. The case where the first stainless steel pipe 40 is directly connected to the inlet end 12 will be described in detail in Example 2.

[0034] 3, in one embodiment, the first stainless steel tube 40 is indirectly connected to the inlet end 12 through a copper connection member 90. Specifically, the copper connection member 90 includes a first copper sleeve 60 connected to the inlet end 12 and a second copper sleeve 70 connected to the first stainless steel tube 40, and the first copper sleeve 60 is welded to the second copper sleeve 70. As a result, the silencer body 10 and the first copper sleeve 60 can be welded, the first stainless steel tube 40 and the second copper sleeve 70 can be welded, and then the first copper sleeve 60 and the second copper sleeve 70 can be welded, thereby realizing the connection between the silencer body 10 and the first stainless steel tube 40. The silencer body 10 and the first copper sleeve 60 are welded by furnace brazing, the first stainless steel tube 40 and the second copper sleeve 70 are welded by furnace brazing, and the first copper sleeve 60 and the second copper sleeve 70 are welded by flame brazing. Since the first copper sleeve 60 and the second copper sleeve 70 are provided, the silencer body 10 and the first copper sleeve 60 may be furnace brazed first, and then the first stainless steel pipe 40 and the second copper sleeve 70 may be furnace brazed. In this case, the length of the joint that enters the brazing furnace is short, and multiple joints can be furnace brazed at the same time, which makes the operation easier and is advantageous for improving manufacturing efficiency. In addition, the silencer body 10 and the first stainless steel pipe 40 are connected via the first copper sleeve 60 and the second copper sleeve 70, and the first copper sleeve 60 and the second copper sleeve 70 can be welded by flame brazing, so when the silencer body 10 needs to be replaced, the silencer body 10 can be removed from the air conditioner simply by breaking the connection between the first copper sleeve 60 and the second copper sleeve 70. After that, a new silencer body 10 can be welded to the second copper sleeve 70. Therefore, by providing the copper connection member 90, it becomes very easy to replace the silencer body 10 in the air conditioner.

[0035] Furthermore, the first copper sleeve 60 is fitted and connected to the outside of the inlet end 12. Specifically, a second outer step 122 is provided on the outer wall of the inlet end 12. By providing the second outer step 122 in this manner, the assembly position of the first copper sleeve 60 is limited, and assembly of the first copper sleeve 60 and the inlet end 12 of the silencer body 10 before welding is made very easy. The second copper sleeve 70 is fitted and connected to the outside of one end of the first stainless steel tube 40, and assembly is easy. The first copper sleeve 60 is fitted and connected to the outside of the second copper sleeve 70, which makes it very easy to flame braze the first copper sleeve 60 and the second copper sleeve 70.

[0036] When the first copper sleeve 60 and the second copper sleeve 70 are flame brazed together, the position of the welding torch is biased toward the first copper sleeve 60, which allows heat to be transferred to the first stainless steel tube 40 through the second copper sleeve 70, thereby preventing overburning and destruction of the weld bead between the silencer body 10 and the first copper sleeve 60.

[0037] The thickness of the first copper sleeve 60 is greater than the thickness of the second copper sleeve 70, which can improve the structural strength of the connection between the silencer body 10 and the first stainless steel pipe 40. It can be easily understood that the length of the second copper sleeve 70 that enters the first copper sleeve 60 and the length of the inlet end 12 that enters the second copper sleeve 70 can refer to the design relationship between the length of the outlet end 11 and the length of the connection pipe 30 of the one-way valve 200 in FIG.

[0038] 1, the muffler assembly 300 further includes a second stainless steel tube 50, one end of which is connected to a third copper sleeve 80, which is connected to an end of the one-way valve 200 that is remote from the muffler 100. The provision of the second stainless steel tube 50 facilitates the connection of the muffler assembly 300 to other joints in the air conditioner. In this embodiment, the third copper sleeve 80 is fitted to the outside of the second stainless steel tube 50, and one end of the third copper sleeve 80 is inserted into the one-way valve 200 and welded to the one-way valve 200. When manufacturing and processing the muffler assembly 300, the third copper sleeve 80 and the second stainless steel tube 50 are brazed in a furnace, the third copper sleeve 80 is welded to one end of the second stainless steel tube 50, and then the third copper sleeve 80 is welded to the end of the one-way valve 200 that is remote from the muffler 100 by flame brazing.

[0039] Example 2 4 to 6, the present application provides a muffler assembly 300. The muffler assembly 300 includes a muffler 100 and a one-way valve 200. The muffler 100 includes a muffler body 10 and a connection port tube 30 provided at one end of the muffler body 10, one end of the connection port tube 30 entering the muffler body 10 and the other end protruding from the end of the muffler body 10. The one end of the connection port tube 30 protruding from the muffler body 10 is directly welded to the one-way valve 200.

[0040] The connection port pipe 30 is directly welded to the one-way valve 200. That is, the muffler 100 is directly welded to the one-way valve 200, which corresponds to omitting the connection pipe in the prior art, and thus the material can be saved, and the manufacturing cost can be significantly reduced. In addition, in the prior art, the muffler is connected to the one-way valve through the connection pipe, so there are two welding points between the muffler and the one-way valve, the first being the welding point between the muffler and the connection pipe, and the second being the welding point between the connection pipe and the one-way valve. Meanwhile, in the present application, the muffler 100 is directly connected to the one-way valve 200, so there is only one welding point between the muffler 100 and the one-way valve 200. That is, compared with the prior art, the muffler assembly 300 of the present application has fewer welding points. If there are many welding points, welding needs to be performed multiple times during processing, which makes the process complicated, the manufacturing efficiency is low, and leakage is likely to occur at the welded parts, so the presence of multiple welding points increases the probability of leakage. The silencer assembly 300 of the present application has fewer welding points, which not only simplifies the processing process and improves manufacturing efficiency, but also reduces the probability of leakage at the welded parts and improves the reliability of the connection between the silencer 100 and the one-way valve 200. In addition, since one connecting member is omitted, the overall length of the silencer assembly 300 is shortened, which is advantageous for space saving, and therefore the silencer assembly 300 can be easily attached to an air conditioner.

[0041] One end of the connection port pipe 30 enters the silencer body 10, lengthening the flow path of the refrigerant medium within the silencer body 10, thereby providing a buffering effect against the flow of the refrigerant medium, which is advantageous in reducing noise generated by the flow of the refrigerant medium, and brings about a good silencing effect for the silencer body 10.

[0042] The silencer body 10 includes a body portion 13, both ends of which are tapered to form an inlet end 12 and an outlet end 11, so that the inner diameters of the inlet end 12 and the outlet end 11 are both smaller than the inner diameter of the body portion 13. After the refrigerant medium enters the body portion 13 from the inlet end 12, the inner diameter becomes larger, and the flow rate decreases. In other words, a buffer effect is exerted on the refrigerant medium, and the noise generated by the flow of the refrigerant medium can be reduced.

[0043] In this application, the connection port pipe 30 is connected to the outlet end 11 of the silencer body 10. That is, the one-way valve 200 is connected to the outlet end 11 side of the silencer body 10. Thus, by providing the one-way valve 200, the refrigerant medium cannot flow from the one-way valve 200 to the silencer 100, but only flows from the silencer 100 to the one-way valve 200. In addition, one end of the connection port pipe 30 enters the silencer body 10, but the refrigerant medium that flows into the silencer body 10 does not directly jump out from the outlet end 11. This is because the inlet end 1 is formed with a reduced diameter to act as a guide for the refrigerant medium, and the refrigerant medium flows to the outlet end 11, bounces off the inner wall of the silencer body 10, flows to the one end of the connection port pipe 30 that entered the silencer body 10, and finally flows out of the silencer 100 through the connection port pipe 30. 4, the curved line with the arrow in the figure is a schematic diagram of the flow path of the refrigerant medium in the silencer body 10. In this way, since the flow path of the refrigerant medium in the silencer body 10 is long, a buffer effect can be exerted on the flow of the refrigerant medium, which is advantageous in reducing noise generated by the flow of the refrigerant medium, and the silencer 100 provides a good silencing effect.

[0044] Furthermore, the length of the portion of the connection port pipe 30 that enters the silencer body 10 is E, and the total length of the silencer body 10 is F, where E and F satisfy the relational expression: E≧1 / 2F. The longer the length of the portion of the connection port pipe 30 that enters the silencer body 10, the longer the flow path of the refrigerant medium within the silencer body 10 becomes, and the stronger the buffering effect on the refrigerant medium becomes, resulting in a better silencing effect. In this embodiment, since E≧1 / 2F, the flow path of the refrigerant medium within the silencer body 10 is long, and therefore the silencer body 10 has a good silencing effect.

[0045] One end of the connection port pipe 30 protruding from the silencer body 10 forms an enlarged end 31, and one end of the one-way valve 200 is inserted into the enlarged end 31. If one end of the connection port pipe 30 is processed to form the enlarged end 31 and this enlarged end 31 is used to engage with one end of the one-way valve 200, the one-way valve 200 and the connection port pipe 30 can be connected without processing the end of the one-way valve 200. The process of enlarging the diameter of one end of the connection port pipe 30 is simple and easy to process, which is advantageous in improving the manufacturing efficiency of this silencer assembly 300.

[0046] Furthermore, the silencer body 10 is made of stainless steel, the connection port tube 30 is made of copper, and the one-way valve 200 is made of copper. Since stainless steel has good rigidity and is inexpensive, using stainless steel for the silencer body 10 can significantly reduce the cost of the silencer assembly 300. Since the connection port tube 30 is made of copper, it is easy to directly connect the silencer 100 and the one-way valve 200 made of copper.

[0047] The silencer assembly 300 further includes a first stainless steel tube 40 that is either directly connected to the inlet end 12 or indirectly connected to the inlet end 12 via a copper connection member 90 (see above for details). The case where the first stainless steel tube 40 is directly connected to the inlet end 12 will be described in detail below.

[0048] 6, in one embodiment, the first stainless steel tube 40 is directly connected to the inlet end 12. Because the silencer body 10 is made of a stainless steel material and the first stainless steel tube 40 is also made of a stainless steel material, welding between the first stainless steel tube 40 and the inlet end 12 is welding between stainless steel materials, so the first stainless steel tube 40 and the inlet end 12 can be welded by furnace brazing. Because the first stainless steel tube 40 is directly connected to the inlet end 12, the welding method is simple and processing is easy.

[0049] Furthermore, an internal step 121 is provided on the inner wall of the inlet end 12, and the first stainless steel tube 40 enters the inlet end 12 and is welded to the internal step 121. By providing the internal step 121, the length of the first stainless steel tube 40 that enters the inlet end 12 is limited, which makes it very easy to assemble the first stainless steel tube 40 before welding, and is advantageous in simplifying the processing process.

[0050] 4, the muffler assembly 300 further includes a second stainless steel tube 50, one end of which is connected to a third copper sleeve 80, which is connected to an end of the one-way valve 200 that is remote from the muffler 100. The provision of the second stainless steel tube 50 facilitates the connection of the muffler assembly 300 to other joints in the air conditioner. In this embodiment, the third copper sleeve 80 is fitted to the outside of the second stainless steel tube 50, and one end of the third copper sleeve 80 is inserted into the one-way valve 200 and welded to the one-way valve 200. When manufacturing and processing the muffler assembly 300, the third copper sleeve 80 and the second stainless steel tube 50 are brazed in a furnace, the third copper sleeve 80 is welded to one end of the second stainless steel tube 50, and then the third copper sleeve 80 is welded to the end of the one-way valve 200 that is remote from the muffler 100 by flame brazing.

[0051] 7, the present application further provides an air conditioner 1000 including the silencer assembly 300 described in any of the above embodiments. The air conditioner 1000 further includes a compressor 400, a condenser 500, a throttling device 600, and an evaporator 700, the compressor 400, the condenser 500, the throttling device 600, and the evaporator 700 are connected in sequence by piping, and the silencer assembly 300 is provided in a piping between the condenser 500 and the throttling device 600.

[0052] In the air conditioner 1000, the silencer 100 and the one-way valve 200 are directly connected, which is equivalent to omitting the connecting pipe in the prior art, and since it is possible to save materials, it is possible to significantly reduce the manufacturing cost. In addition, since the silencer 100 is directly connected to the one-way valve 200, there is only one welding point between the silencer 100 and the one-way valve 200. That is, compared with the prior art, the silencer assembly 300 of the present application has fewer welding points. This not only simplifies the processing process and improves manufacturing efficiency, but also reduces the probability of leakage at the welded portion, thereby improving the reliability of the connection between the silencer 100 and the one-way valve 200. In addition, since one connecting member is omitted, the overall length of the silencer assembly 300 is shortened, which is advantageous for space saving, and therefore the silencer assembly 300 can be easily installed in the air conditioner 1000.

[0053] Each of the technical features of the above-mentioned 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-mentioned embodiments have been described. However, as long as there is no contradiction in the combination of these technical features, all of them should be considered to be within the scope described in this specification.

[0054] The above examples merely show some embodiments of the present application, and although the description is relatively specific and detailed, it should not be understood as limiting the scope of the claims of the application. It should be noted that those skilled in the art can make some modifications and improvements without departing from the spirit of the present application, all of which are within the scope of protection of the present application. Therefore, the scope of protection of the patent of the present application shall be subject to the scope of the attached claims.

Claims

1. The muffler includes a muffler body and a connection port pipe provided at one end of the muffler body, and the connection port pipe is directly connected to the one-way valve; The silencer body has an outlet end, the connection pipe is fitted and connected to the outside of the outlet end and welded to the outlet end, and one end of the one-way valve is inserted into the connection pipe and directly welded to the connection pipe; A muffler assembly, wherein A is the length of the outlet end that enters the connection pipe, B is the length of the one-way valve that enters the connection pipe, and C is the length of the connection pipe, and A, B, and C satisfy the relationship: 1 / 3C≦A≦2 / 3C, 1 / 3C≦B≦2 / 3C.

2. The muffler includes a muffler body and a connection port pipe provided at one end of the muffler body, and the connection port pipe is directly connected to the one-way valve; One end of the connection port pipe is inserted into the silencer body and the other end protrudes from an end of the silencer body, and the end of the connection port pipe protruding from the silencer body is directly welded to the one-way valve, A muffler assembly, wherein a length of the portion of the connection pipe that enters the muffler body is E, a total length of the muffler body is F, and E and F satisfy the relationship: E≧1 / 2F.

3. 3. The silencer assembly according to claim 1, wherein the silencer body is made of stainless steel, the connection port pipe is made of copper, and the one-way valve is made of copper.

4. 2. The silencer assembly of claim 1, wherein an end of the one-way valve extending into the port pipe abuts an end face of the outlet end located within the port pipe.

5. 2. The silencer assembly of claim 1, wherein an outer wall of the outlet end is provided with a first outer step, the first outer step being provided along a circumferential direction of the outlet end, and the connection port pipe abuts against the first outer step.

6. 3. The muffler assembly according to claim 2, wherein one end of said connection port tube protruding from said muffler body forms an enlarged end, and one end of said one-way valve is inserted into said enlarged end.

7. 3. The muffler assembly of claim 1 or 2, wherein the muffler body has an inlet end, and the muffler assembly further comprises a first stainless steel tube, the first stainless steel tube being directly or indirectly connected to the inlet end.

8. 8. The muffler assembly of claim 7, wherein an inner wall of the inlet end has an inner step, the first stainless steel pipe is inserted into the inlet end and welded to the inner step, and the first stainless steel pipe is directly connected to the inlet end.

9. 8. The silencer assembly of claim 7, wherein the silencer assembly includes a copper connection member, the copper connection member including a first copper sleeve connected to the inlet end and a second copper sleeve connected to the first stainless steel tube, the first copper sleeve being welded to the second copper sleeve, and the first stainless steel tube being indirectly connected to the inlet end via the copper connection member.

10. 10. The silencer assembly of claim 9, wherein the first copper sleeve is matingly connected to the outside of the inlet end, the second copper sleeve is matingly connected to the outside of one end of the first stainless steel tube, and the first copper sleeve is matingly connected to the outside of the second copper sleeve.

11. 10. The silencer assembly of claim 9, wherein the wall thickness of the first copper sleeve is greater than the wall thickness of the second copper sleeve, and when welding the first copper sleeve and the second copper sleeve, the position of a welding torch is biased toward the first copper sleeve.

12. 3. The muffler assembly of claim 1 or 2, further comprising a second stainless steel tube, one end of the second stainless steel tube being connected to a third copper sleeve, the third copper sleeve being connected to an end of the one-way valve remote from the muffler.

13. An air conditioner comprising a silencer assembly according to claim 1 or 2.

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