Multi-way pipe assembly

Abstract

The utility model relates to a multi-way pipe assembly, the multi-way pipe assembly comprises a multi-way pipe and a connecting pipe, the multi-way pipe is connected with the connecting pipe, the multi-way pipe is a steel pipe, the connecting pipe comprises a steel body part and a copper surface layer, the steel body part comprises a connecting end part, the copper surface layer at least covers the surface of the connecting end part, and the copper surface layer covers the surface of the connecting end part. The material cost of the multi-way pipe assembly can be relatively reduced, the multi-way pipe can be conveniently connected with a system connecting pipe or other connecting pipes, and the compression strength of the multi-way pipe assembly can be relatively improved.

Description

Technical Field

[0001] The utility model relates to the field of refrigeration, in particular to a multi-way pipe assembly. Background Art

[0002] In the refrigeration system, the multi-way pipe assembly is mainly used to connect the copper pipes in the refrigeration system. In order to be able to connect with the copper pipes in the system, the connecting pipes of the multi-way pipe assembly are generally made of copper. However, due to the low compressive strength of copper pipe fittings, when the liquid pressure in the multi-way pipe assembly is too high, the copper pipe is prone to rupture. Utility Model Content

[0003] Based on this, it is necessary to provide a multi-way pipe assembly with good pressure resistance and convenient connection with the system copper pipe to address the above problems.

[0004] The technical solutions adopted are as follows:

[0005] A multi-way pipe assembly, the multi-way pipe assembly includes a multi-way pipe and a connecting pipe, the multi-way pipe and the connecting pipe are connected, the multi-way pipe is a steel pipe fitting, the connecting pipe includes a steel body and a copper surface layer, the steel body includes a connecting end portion, and the copper surface layer at least covers the surface of the connecting end portion.

[0006] Through the above scheme, when the multi-way pipe assembly is connected to the system copper pipe, since the copper surface layer at least covers the surface of the connecting end, the same material is convenient for connection, and the material of the steel main body is steel, which improves the compressive strength. Therefore, this scheme can not only relatively reduce the material cost of the multi-way pipe assembly, facilitate the connection of the multi-way pipe with the copper pipe in the refrigeration system, but also relatively improve the compressive strength of the multi-way pipe assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 is a schematic diagram of a first embodiment of a multi-way pipe assembly;

[0008] Figure 2 is a schematic diagram of a second embodiment of a multi-way pipe assembly;

[0009] Figure 3 is a cross-sectional view of a second embodiment of a multi-way pipe assembly;

[0010] Figure 4 for Figure 3 A partial enlarged view of

[0011] Figure 5 is a cross-sectional view of a third embodiment of a multi-way pipe assembly;

[0012] Figure 6 is a cross-sectional view of a fourth embodiment of a multi-way pipe assembly;

[0013] Figure 7is a cross-sectional view of a fifth embodiment of a multi-way pipe assembly;

[0014] 100, multi-way pipe assembly; 1, multi-way pipe; 2, connecting pipe; 11, first main body; 111, first cavity; 12, second main body; 121, second cavity; 110, first interface; 120, second interface; 13, diversion cavity; 21, first connecting pipe; 210, first steel main body; 211, first copper surface; 2101, first connecting end; 2102, second connecting end; 22, second connecting pipe; 220, second steel main body; 221, second copper surface; 2201 , third connecting end; 2202, fourth connecting end; 212, first barrel; 213, first flared portion; 214, first constricted portion; 222, second barrel; 223, second constricted portion; 224, third constricted portion; 3, filter component; 30, fixing portion; 31, filter screen; 32, mixing flow portion; 310, mounting end; 311, filter screen end; 321, mounting portion; 322, mixing flow base; 3220, mixing flow hole; 4, first system connecting pipe; 4', second system connecting pipe; DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0016] In the refrigeration system, the multi-way pipe assembly 100 is mainly used to connect the pipes in the refrigeration system, and the pipes in the refrigeration system are mostly copper pipes. In order to facilitate the connection between the multi-way pipe assembly 100 and the pipes in the refrigeration system, the connecting pipe 2 of the multi-way pipe assembly 100 is generally made of copper. However, when the pressure in the refrigeration system is too high, the copper pipe is prone to rupture due to its low compressive strength. Based on this, it is necessary to provide a multi-way pipe assembly with good compressive strength and convenient connection with the system pipe or other pipes to address the above problems.

[0017] See also Figure 1-Figure 7The present application provides a multi-way pipe assembly 100, which includes a multi-way pipe 1 and a connecting pipe 2. The multi-way pipe 1 and the connecting pipe 2 are connected, and the connection method can be welding, riveting, interference fit, limit connection, etc. The welding method can be argon arc welding or gas shielded welding or laser welding, etc. The material of the multi-way pipe 1 can be steel, such as stainless steel or carbon steel, and the material of the connecting pipe 2 can be copper and steel. However, considering the problems of compressive strength and cost, the cost of copper pipe is higher than that of steel pipe, and the compressive strength is lower than that of steel pipe. It is preferred that the material of the connecting pipe 2 is steel. It should be noted that the steel material in the text can be stainless steel or carbon steel. One end of the connecting pipe 2 is connected to the multi-way pipe 1, and the other end is connected to the system pipe. The connecting pipe 2 includes a steel body and a copper surface layer. The steel body includes a connecting end, and the connecting end is generally connected to the system pipe, and of course, it can also be connected to other pipes. The copper surface layer at least covers the surface of the connecting end. The copper surface layer can be formed by copper plating at least on the surface of the connecting end of the steel body. The formation of the copper surface layer not only facilitates the welding of the connecting pipe 2 and the system pipe, but also improves the welding reliability. In addition, the connecting pipe is made of steel, which can further reduce the cost of the multi-way pipe assembly 100 and improve the compressive strength of the multi-way pipe assembly 100. Of course, the copper surface layer can also cover the entire surface of the steel body. The copper surface layer is set on the surface of the connecting end, and can be set on the inner surface or outer surface of the connecting end according to the diameter of the system pipe. If the outer wall of the connecting end matches the inner wall of the connecting end of the system pipe, a copper surface layer can be set on the outer surface of the connecting end; if the inner wall of the connecting end matches the outer wall of the connecting end of the system pipe, a copper surface layer can be set on the inner surface of the connecting end. The specific situation can be determined according to the use environment.

[0018] See also Figure 1-2 Specifically, the multi-way tube 1 is made of stainless steel or carbon steel, and includes a first main body 11 and a second main body 12. The first main body 11 and the second main body 12 are connected by welding, riveting, interference fit, or position limiting, and the welding method can be argon arc welding, gas shielded welding, or laser welding. A first cavity 111 and at least one first interface 110 communicating with the first cavity 111 are formed on the first main body 11, and a second cavity 121 and at least one second interface 120 communicating with the second cavity 121 are formed on the second main body 12. The first main body 11 and the second main body 12 are connected to each other, and the first cavity 111 and the second cavity 121 are surrounded to form at least a part of the diverter cavity 13, that is, the multi-way tube assembly 100 includes a diverter cavity 13, and the diverter cavity 13 includes a first cavity 111 and a second cavity 121, and the diverter cavity 13 communicates with the first interface 110 and the second interface 120.

[0019] The specific usage of the first interface portion 110 and the second interface portion 120 is determined according to the usage scenario of the multi-way tube 1. In some scenarios, the first interface portion 110 is a port for fluid to enter, and the second interface portion 120 is a port for fluid to flow out; of course, the first interface portion 110 and the second interface portion 120 can be interchangeably used as the inlet or outlet of the fluid.

[0020] The multi-way pipe assembly 100 is mainly used to connect the first system pipe 4. The first system pipe 4 is mostly a copper pipe. The steel body includes a first steel body 210, and the copper surface includes a first copper surface 211. The connecting pipe 2 includes at least one first pipe 21. The first pipe 21 includes a first steel body 210 and a first copper surface 211. The first steel body 210 includes a first connecting end 2101 and a second connecting end 2102. The first connecting end 2101 of the first steel body 210 is connected to the first interface 110. The first pipe 21 and the first interface 110 can be connected by welding, riveting or bonding. Welding connection can be selected, which has higher reliability. The second connecting end 21 02 is welded and connected with the first system pipe 4, the first copper surface layer 211 at least covers the surface of the second connection end 2102; the steel body part includes a second steel body part 220, the copper surface layer includes a second copper surface layer 221, the connecting pipe 2 includes at least one second pipe 22, the second pipe 22 includes a second steel body part 220 and a second copper surface layer 221, the second steel body part 220 includes a third connection end 2201 and a fourth connection end 2202, the third connection end 2201 of the second steel body part 220 is connected to the second interface part 120, the fourth connection end 2202 is connected to the second system pipe 4', and the second copper surface layer 221 at least covers the surface of the fourth connection end 2202. The connecting pipe 2 in the multi-way pipe assembly 100 is used to connect the system pipe. Through the above embodiment, the copper surface layer is formed at the connection end where the connecting pipe 2 is connected to the system pipe by a copper plating process, which facilitates the welding connection between the connecting pipe 2 and the system pipe, and helps to improve the welding strength and reliability.

[0021] The multi-way pipe assembly 100 can also be used to connect with other connecting pipes. If the other connecting pipes are copper pipes, in order to facilitate and reliably connect with other connecting pipes, the connecting pipe 2 can be a copper pipe, or it can be the same as the above embodiment, that is, the connecting end of the connecting pipe 2 is covered with a copper surface layer.

[0022] The multi-way pipe assembly 100 is mainly used in refrigeration systems. The compressor, heat exchange components, pipelines, and refrigerants in the refrigeration system will generate certain noise when working. In order to solve this problem, a silencer component can be set in the multi-way pipe assembly 100 to eliminate part of the noise and make the system noise meet the requirements. Figure 2In this embodiment, the first connecting pipe 21 is a silencer, or the second connecting pipe 22 is a silencer. The multi-way pipe assembly 100 of this example integrates the dual functions of silencing and refrigerant diversion. When the multi-way pipe assembly 100 provided by the embodiment is applied in a refrigeration system, there is no need to connect a silencer, thereby reducing welding points, reducing the assembly process, and reducing the number of parts, such as connecting pipes, saving costs. Therefore, the multi-way pipe assembly 100 provided in this embodiment has the advantages of compact structure and the combination of the dual functions of refrigerant diversion and silencer. The first connecting pipe 21 also includes a first barrel portion 212, a first flaring portion 213 is provided between the second connecting end portion 2102 and the first barrel portion 212, a first shrinking portion 214 is provided between the first barrel portion 212 and the first connecting end portion 2101, and the diameter of the first barrel portion 212 is greater than the diameter of the second connecting end portion 2102. Specifically, the second connecting end 2102 of the first connecting pipe 21 serves as a refrigerant inlet. The refrigerant enters the first connecting pipe 21 from the second connecting end 2102 through the first expansion portion 213. The diameter of the first cylindrical portion 212 is larger than the diameter of the second connecting end 2102. According to the silencer principle, the first cylindrical portion 212 serves as a silencer to silence the system.

[0023] Alternatively, the second connecting pipe 22 also includes a second barrel portion 222, a second necking portion 223 is provided between the third connecting end portion 2201 and the second barrel portion 222, and a third necking portion 224 is provided between the second barrel portion 222 and the fourth connecting end portion 2202. When the fourth connecting end portion 2202 of the second connecting pipe 22 is used as the inlet of the refrigerant, the refrigerant enters the second connecting pipe 22 from the fourth connecting end portion 2202 through the third necking portion 224, and the system can be silenced. In addition, the second connecting pipe 22 is configured in this way, so that the second connecting pipe 22 can be used to connect to the second system connecting pipe 4' of different diameters. When the diameter of the second system connecting pipe 4' is small, the second connecting pipe 22 is necked twice to reach a size that can be matched with the second system connecting pipe 4'. This can relatively reduce the risk of the second connecting pipe 22 being broken due to the necking process and the size change being too large.

[0024] See also Figure 3 As shown, in this embodiment, the multi-channel pipe assembly 100 includes at least one filter component 3. It can be seen that the multi-channel pipe assembly 100 of this example integrates the dual functions of filtering and refrigerant diversion. When the multi-channel pipe assembly 100 provided by the embodiment is applied to a refrigeration system, there is no need to connect a filter, thereby reducing welding points, reducing assembly processes, and reducing the number of parts, such as connecting pipes, saving costs. Therefore, the multi-channel pipe assembly 100 provided by this embodiment has the advantages of compact structure and integrating the dual functions of refrigerant diversion and silencing.

[0025] The multi-way pipe assembly 100 includes at least one filter component 3, which is a metal part. The temperature of the fluid in the refrigeration system varies greatly, and the metal filter component is less affected by the fluid temperature, and can also prevent deformation due to the influence of the fluid pressure. The filter component 3 is arranged in the diversion cavity 13, and is used to filter the fluid. After the first main body 11 and the second main body 12 are formed separately and before the two are connected, the filter component 3 can be installed in the first cavity 111 or the second cavity 121. The filter component 3 can be connected to the inner wall of the first main body 11; and / or, the filter component 3 is connected to the inner wall of the second main body 12. This arrangement enables the multi-way pipe assembly 100 to realize the multi-way pipe function by adding a filter component, and can also filter impurities in the fluid, reducing the risk of impurities entering the refrigeration system and causing system failure. Specifically, the filter component 3 can be arranged in the first interface part 110, or in the second interface part 120, and of course, it can also be arranged in the first interface part 110 and the second interface part 120 at the same time. The specific application method of the filter component depends on the filtering requirements of the system. When the filter component 3 is connected to the first interface part 110, the number of the filter components 3 corresponds to the number of the first interface part 110, for example, when the number of the first interface part 110 is 1, the number of the filter components 3 can correspond to 1. When the filter component 3 is connected to the second interface part 120, the number of the filter components 3 corresponds to the number of the second interface part 120, for example, when the number of the second interface part 120 is 2, the number of the filter components 3 can correspond to 2. Of course, multiple filter components 3 can also be set, some are connected to the first interface part 110, and some are connected to the second interface part 120. In order to prevent impurities in the fluid from entering the refrigeration system, no matter how many filter components 3 are set and where they are set, it is necessary to ensure that the fluid can enter the refrigeration system only after passing through the filter component 3. When the number of filter components 3 is greater than 1, the structure and parameters of the filter component 3 can be the same or different, depending on the specific situation.

[0026] For details, see Figure 4 As shown, the connecting pipe 2 in the multi-way pipe assembly 100 is connected to the second system connecting pipe 4', which is used to allow the fluid to flow out from the outlets of multiple connecting pipes 2 to the second system connecting pipe 4' to achieve fluid diversion. However, uneven diversion is prone to occur in the middle, so that the heat exchange efficiency of the fluids in different pipelines is uneven during heat exchange, and the ideal working effect cannot be achieved. In order to make the fluid diversion uniform, a mixing part 32 can be set in the multi-way pipe 1. Specifically, the filter component 3 includes a fixed part 30, a filter screen 31 and a mixing part 32, the fixed part 30 is fixedly connected to the first main body 11 or the second main body 12, the filter screen 31 is at least partially arranged on the inner side of the fixed part 30, and the filter screen 31 has a mounting end 310 and a filter screen end 311, and the mounting end 310 is fixedly connected to the fixed part 30.

[0027] The first interface part 110 is set as the inlet, and the second interface part 120 is set as the outlet, and the direction along the first interface part 110 to the second interface part 120 is defined as the fluid flow direction X in the multi-way tube assembly 100, and along the fluid flow direction X, the filter net 31 is arranged upstream of the mixing part 32; or, the second interface part 120 is set as the inlet, and the first interface part 110 is set as the outlet, and the direction along the second interface part 120 to the first interface part 110 is defined as the fluid flow direction X in the multi-way tube assembly 100, and along the fluid flow direction X, the filter net 31 is arranged upstream of the mixing part 32. The mixing part 32 includes a mounting part 321 and a mixing base 322. The mixing base 322 is provided with a plurality of mixing holes 3220. The axis of the mixing hole 3220 is parallel to the axis of the fixing part 30. The mounting part 321 is fixedly connected to the fixing part 30 or the mounting part 321 and the fixing part 30 are an integral structure. The "fixed connection" here can be a welding connection, a limit connection, an interference fit, etc. In this arrangement, the fluid is first filtered through the filter 31 to filter out the fluid with impurities, and then mixed through the mixing part 32. The mixing holes 3220 on the mixing part 32 disperse the fluid and then gather it, which can make the fluid distribution more uniform, and evenly flow out from the outlet of the multi-way pipe assembly 100, and then flow into the connecting pipe in the refrigeration system for heat exchange, so that the heat exchange is more uniform and the heat exchange efficiency is uniform; in addition, after the fluid is filtered through the filter, it is mixed through the mixing part, which can relatively reduce the influence of impurities in the fluid on the fluid mixing effect.

[0028] Along the direction X of the fluid flow: the filter end 311 is located upstream of the installation end 310, and the filter end 311 protrudes in the direction of the fluid inflow, so that impurities in the fluid are filtered and scattered around the filter end 311, and the filter is not easily blocked by impurities.

[0029] See also Figure 6-7 , the connecting pipe 2 can be a straight pipe without a silencer function, or it can be some other embodiments of the first connecting pipe 21 and the second connecting pipe 22, such as one with a silencer function. In other embodiments, the connecting pipe 2 of the multi-way pipe assembly 100 can be arbitrarily combined according to the needs of the system. Regarding the functions of the multi-way pipe assembly 100, it can only integrate the dual functions of filtering and refrigerant diversion; it can also integrate the dual functions of silencer and refrigerant diversion; it can also integrate the triple functions of filtering, silencer, and refrigerant diversion; whether these functions are integrated depends on the actual needs of the system. In summary, the multi-way pipe assemblies 100 of these embodiments have the advantages of compact structure and cost savings.

Claims

1. A multi-way pipe assembly, characterized in that: The multi-way pipe assembly (100) comprises a multi-way pipe (1) and a connecting pipe (2); the multi-way pipe (1) and the connecting pipe (2) are connected; the multi-way pipe (1) is a steel pipe; the connecting pipe (2) comprises a steel body (210 / 220) and a copper surface layer (211 / 221); the steel body (210, 220) comprises a connecting end portion (2101 / 2102 / 2201 / 2202); and the copper surface layer (211 / 221) at least covers the surface of the connecting end portion (2101 / 2102 / 2201 / 2202).

2. The multi-way pipe assembly according to claim 1, characterized in that: The multi-way tube (1) comprises a first main body portion (11) and a second main body portion (12); the first main body portion (11) comprises a first cavity (111) and at least one first interface portion (110) connected to the first cavity (111); the second main body portion (12) comprises a second cavity (121) and at least one second interface portion (120) connected to the second cavity (121); the multi-way tube assembly (100) comprises a diverter cavity (13); the diverter cavity (13) connects the first interface portion (110) and the second interface portion (120); the diverter cavity comprises the first cavity (111) and the second cavity (121).

3. The multi-way pipe assembly according to claim 2, characterized in that: The steel body portion comprises a first steel body portion (210), the copper surface layer comprises a first copper surface layer (211), the connecting pipe (2) comprises at least one first connecting pipe (21), the first connecting pipe (21) comprises the first steel body portion (210) and the first copper surface layer (211), the first steel body portion (210) comprises a first connecting end portion (2101) and a second connecting end portion (2102), the first connecting end portion (2101) is connected to the first interface portion (110), the second connecting end portion (2102) is connected to a first system connecting pipe (4), and the first copper surface layer (211) at least covers a surface of the second connecting end portion (2102).

4. The multi-way pipe assembly according to claim 2 or 3, characterized in that: The steel body portion comprises a second steel body portion (220), the copper surface layer comprises a second copper surface layer (221), the connecting pipe (2) comprises at least one second connecting pipe (22), the second connecting pipe (22) comprises the second steel body portion (220) and the second copper surface layer (221), the second steel body portion (220) comprises a third connecting end portion (2201) and a fourth connecting end portion (2202), the third connecting end portion (2201) is connected to the second interface portion (120), the fourth connecting end portion (2202) is connected to the second system connecting pipe (4'), and the second copper surface layer (221) at least covers the surface of the fourth connecting end portion (2202).

5. The multi-way pipe assembly according to claim 3, characterized in that: The first connecting pipe (21) also includes a first cylindrical portion (212), a first expanding portion (213) is arranged between the second connecting end portion (2102) and the first cylindrical portion (212), and a first shrinking portion (214) is arranged between the first cylindrical portion (212) and the first connecting end portion (2101), and the diameter of the first cylindrical portion (212) is greater than the diameter of the second connecting end portion (2102).

6. The multi-way pipe assembly according to claim 4, characterized in that: The second connecting pipe (22) further includes a second cylindrical portion (222), a second necked portion (223) is provided between the third connecting end portion (2201) and the second cylindrical portion (222), and a third necked portion (224) is provided between the second cylindrical portion (222) and the fourth connecting end portion (2202).

7. The multi-way pipe assembly according to any one of claims 2 to 6, characterized in that: The multi-way pipe assembly (100) comprises at least one filter component (3), wherein the filter component (3) is arranged in the diversion cavity (13); the filter component (3) is connected to the first main body (11); and / or the filter component (3) is connected to the second main body (12).

8. The multi-way pipe assembly according to claim 7, characterized in that: The filter component (3) comprises a fixing portion (30), a filter screen (31) and a mixing portion (32); the fixing portion (30) is connected to the first main body portion (11), or the fixing portion (30) is connected to the second main body portion (12); the filter screen (31) is at least partially arranged inside the fixing portion (30), and the filter screen (31) has a mounting end portion (310) and a filter screen end portion (311); the mounting end portion (310) is fixedly connected to the fixing portion (30).

9. The multi-way pipe assembly according to claim 8, characterized in that: The first interface portion (110) is set as an inlet, and the second interface portion (120) is set as an outlet, and the direction along the first interface portion (110) to the second interface portion (120) is defined as the fluid flow direction X in the multi-way tube assembly (100), and along the fluid flow direction X, the filter net (31) is arranged upstream of the mixing portion (32); or, the second interface portion (120) is set as an inlet, and the first interface portion (110) is set as an outlet, and the direction along the second interface portion (120) to the first interface portion (110) is defined as the fluid flow direction X in the multi-way tube assembly (100), and along the fluid flow direction X, the filter net (31) is arranged upstream of the mixing portion (32).

10. The multi-way pipe assembly according to claim 9, characterized in that: The flow mixing portion (32) comprises a mounting portion (321) and a flow mixing base (322), the flow mixing base (322) being provided with a plurality of flow mixing holes (3220), the axis of the flow mixing holes (3220) being parallel to the axis of the fixed portion (30), the mounting portion (321) being fixedly connected to the fixed portion (30), or the mounting portion (321) and the fixed portion (30) being an integral structure.

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