Elbow structure of liquid accumulator

Abstract

The liquid accumulator elbow structure comprises a straight pipe part and a copper elbow part, the straight pipe part comprises a main body section and a first connecting section which are integrally formed, and the first connecting section is arranged at one end of the main body section and comprises a first welding part and a second welding part which communicate with each other; a first welding part is arranged on the side, away from the second welding part, of the first welding part and used for welding connection of the copper elbow part, a welding boss is formed on the outer wall of the second welding part, and a second welding part is arranged on the side, away from the first welding part, of the welding boss and used for welding connection with the barrel. By the adoption of the structure, the secondary welding process between a welding boss / a welding flange and other structures and the straight pipe part is directly omitted, the problem that welding points between the straight pipe part and the copper bent pipe part are damaged or broken down is fundamentally solved, the yield of gas outlet bent pipe production is greatly increased, extra welding flux consumption is omitted, and the production cost is reduced. The production cost is reduced.

Description

Technical Field

[0001] This application relates to the technical field of compressor liquid receivers, and particularly to a liquid receiver elbow structure. Background Art

[0002] A liquid receiver is an important component of a compressor, which plays the roles of storage, gas-liquid separation, filtration, silencing, and refrigerant buffering. The main structure of the liquid receiver includes a cylinder body, an intake straight pipe and an outlet elbow respectively arranged at both ends of the cylinder body. The outlet elbow usually includes a straight pipe part extending into the cylinder body and a bent pipe part communicating with the straight pipe part and extending outside the cylinder body.

[0003] In the prior art, in order to ensure the stability and reliability of the compressor and the liquid receiver pipeline system, the above-mentioned bent pipe part is usually made of copper. Since the straight pipe part is not in contact with the external air inside the cylinder body, it is not easy to rust. Therefore, using a copper pipe for the straight pipe part has no advantage over using a steel pipe, and the price of copper is several times higher than that of steel under the same volume. Therefore, in fact, the cost of using a copper pipe is significantly higher. Now, many manufacturers have changed the material of the straight pipe part to steel to reduce the product material cost. In the existing actual application process, the straight pipe part and the bent pipe part usually need to be connected by welding to form a complete outlet elbow.

[0004] However, most of the traditional outlet elbows are smooth tubes with smooth outer walls. When assembling with the cylinder body, there are problems such as difficult positioning and it is difficult to maintain good concentricity with the cylinder body. Moreover, additional solder is required during the welding process between the outlet elbow and the outlet port of the cylinder body, resulting in low production efficiency, high energy consumption, and high production cost. Therefore, in the prior art, structures such as welding bosses / welding flanges are also provided on the straight pipe part to facilitate assembly with the cylinder body. Therefore, during the production of the existing outlet elbow, one end of the straight pipe part usually undergoes two weldings between the bent pipe part and the welding boss / welding flange and other structures. However, since the welding points of the two weldings are too close, when performing the second welding (the welding between the outlet elbow and the solder), the welding point of the first welding (the welding connection between the straight pipe part and the bent pipe part) is easily damaged or directly penetrated, which in turn causes the structure of the outlet elbow to be damaged and affects the normal use of the outlet elbow and the liquid receiver.

[0005] It can be seen that there are still certain defects in the prior art. Summary of the Utility Model

[0006] This application provides a liquid receiver elbow structure to solve at least one of the above technical problems.

[0007] The technical solution adopted in this application is as follows: This application provides a liquid storage pipe elbow structure, which includes a straight pipe part and a copper pipe elbow part. The straight pipe part includes a main body section and a first connection section provided at one end of the main body section. The first connection section includes a first welding part and a second welding part that are communicated with each other. A first welding joint is provided on a side of the first welding part away from the second welding part. The first welding joint is used for welding connection with the copper pipe elbow part. A welding boss extending radially away from the first connection section is formed on an outer wall of the second welding part, and an outer diameter of the welding boss is greater than an outer diameter of the main body section. A second welding joint is provided on a side of the welding boss away from the first welding part. The second welding joint is used for welding connection with a cylinder body.

[0008] As a preferred embodiment of this application, the copper pipe elbow part includes a bending part and second connection sections and third connection sections provided at both ends of the bending part. The second connection section is cooperatively connected with the first welding part, and a length of the second connection section is less than a length of the third connection section.

[0009] As a preferred embodiment of this application, an inner diameter of the first welding part is not greater than an outer diameter of the second connection section and is not less than an inner diameter of the second connection section. An inner diameter of the second welding part is less than the outer diameter of the second connection section and is not less than the inner diameter of the second connection section. The first welding part is sleeved outside the second connection section.

[0010] As a preferred embodiment of this application, a first limiting step is formed at a connection position between an inner wall of the first welding part and an inner wall of the second welding part. An end of the second connection section is in limiting cooperation with the first limiting step.

[0011] As a preferred embodiment of this application, along an axial direction of the first connection section, a second limiting step is provided on a side of the welding boss away from the first welding part. The second limiting step is used for limiting cooperation with an air outlet port of the cylinder body.

[0012] As a preferred embodiment of this application, an outer diameter of the first connection section is greater than an outer diameter of the main body section. A cooperation guiding part is provided at a connection position between the first connection section and the main body section. The cooperation guiding part is connected with the second limiting step.

[0013] As a preferred embodiment of this application, the welding boss is provided with a welding guiding part. Along the axial direction of the first connection section, the welding guiding part is provided on a side of the second limiting step facing the first welding part.

[0014] As a preferred embodiment of the present application, the welding guiding portion is a welding inclined surface connected to the second limiting step, and a transition arc surface is provided at the corner of the second limiting step.

[0015] As a preferred embodiment of the present application, a transition arc surface is provided at the connection between the welding inclined surface and the second limiting step.

[0016] As a preferred embodiment of the present application, the first welding portion is provided with the first welding place at its end, and the second limiting step is provided with the second welding place.

[0017] Due to the adoption of the above technical solutions, the beneficial effects obtained by the present application are as follows:

[0018] 1. In the above solution, by integrally forming the welding boss on the second welding portion, compared with the prior art, the second welding process between the welding boss / welding flange and the straight pipe part is directly omitted, fundamentally avoiding the problem of the welding point between the straight pipe part and the copper elbow part being damaged or penetrated, greatly improving the yield rate of the production of the outlet elbow pipe, and saving the additional solder consumption, reducing the production cost; at the same time, the positioning and assembly difficulty between the outlet straight pipe and the cylinder body is greatly reduced by the setting of the welding boss, which is beneficial to maintaining good concentricity between the straight pipe part and the cylinder body; in addition, the solderless welding between the straight pipe part and the outlet port of the cylinder body is facilitated by setting the welding boss, further reducing the production cost.

[0019] 2. In the above solution, by the setting of the first connecting section, especially the first welding portion, compared with the straight pipe part in the prior art, the structure of the straight pipe part for connecting with the copper elbow part is extended, so that the length of the second connecting section of the copper elbow part can be less than the length of the third connecting section, thereby reducing the copper material used for the copper elbow part and further reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments and descriptions thereof of the present application are used to explain the present application, and do not constitute an improper limitation to the present application. In the drawings:

[0021] Figure 1 It is a schematic structural diagram of the elbow pipe structure of the present application in an example;

[0022] Figure 2 It is a schematic structural diagram of the straight pipe part in an example;

[0023] Figure 3 It is a schematic structural diagram of the first connecting section in an example;

[0024] Figure 4This is a schematic diagram showing the structural comparison between the copper elbow part in this application and the existing copper elbow part.

[0025] List of components and reference numerals:

[0026] 1 Straight pipe part, 11 First connection section, 111 First welding part, 1111 First welding point, 112 Second welding part, 1121 Welding boss, 1122 Second welding point, 1123 Second limiting step, 1124 Welding guiding part, 113 First limiting step, 114 Matching guiding part, 115 Transition arc surface, 12 Main body section; 2 Copper elbow part, 21 Bending part, 22 Second connection section, 23 Third connection section;

[0027] 3 Copper elbow part of the existing outlet elbow. Detailed implementation manners

[0028] In order to more clearly illustrate the overall concept of this application, the following will be described in detail by way of examples in conjunction with the accompanying drawings of the specification.

[0029] Many specific details are set forth in the following description in order to provide a thorough understanding of this application. However, this application may be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited by the specific embodiments disclosed below. It should be noted that, without conflict, the embodiments of this application and the features in each embodiment may be combined with each other.

[0030] In addition, in the description of this application, it should be understood that the orientation or positional relationships indicated by the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application.

[0031] In this application, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application may be understood according to specific circumstances.

[0032] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0033] Referring to Figures 1-4 As shown, this application discloses a liquid storage pipe elbow structure, including a straight pipe part 1 and a copper pipe elbow part 2. Among them, the straight pipe part 1 includes a main body section 12 and a first connection section 11 formed integrally. The first connection section 11 is arranged at one end of the main body section 12 and includes a first welding part 111 and a second welding part 112 that communicate with each other. On the side of the first welding part 111 away from the second welding part 112, there is a first welding place 1111, which is used for welding connection with the copper pipe elbow part 2. On the outer wall of the second welding part 112, there is a welding boss 1121 extending radially along the first connection section 11 in a direction away from the first connection section 11, and the outer diameter of the welding boss 1121 is greater than the outer diameter of the main body section 12. On the side of the welding boss 1121 away from the first welding part 111, there is a second welding place 1122, which is used for welding connection with the cylinder body; the copper pipe elbow part 2 includes a bending part 21 and second connection sections 22 and third connection sections 23 arranged at both ends of the bending part 21. The second connection section 22 is cooperatively connected with the first welding part 111, and the length of the second connection section 22 is less than that of the third connection section 23.

[0034] In the above solution, by integrally forming the welding boss 1121 on the second welding part 112, compared with the prior art, the second welding process between the welding boss 1121 / welding flange and other structures and the straight pipe part 1 is directly omitted, fundamentally avoiding the problem that the welding point between the straight pipe part 1 and the copper pipe elbow part 2 is damaged or penetrated, greatly improving the yield rate of the outlet pipe elbow production, and saving the consumption of additional solder, reducing the production cost; at the same time, the setting of the welding boss 1121 greatly reduces the positioning and assembly difficulty between the outlet straight pipe and the cylinder body, which is beneficial to maintaining good concentricity between the straight pipe part 1 and the cylinder body; in addition, by setting the welding boss 1121, it is also convenient to realize the solderless welding between the straight pipe part 1 and the outlet port of the cylinder body, further reducing the production cost.

[0035] And referring to Figure 1As shown, in the above solution, the arrangement of the first connecting section 11, especially the first welding part 111, extends the straight pipe part 1 for the structure with the copper elbow part 2 compared with the straight pipe part 1 in the prior art, so that the length of the second connecting section 22 of the copper elbow part 2 can be less than the length of the third connecting section 23. That is to say, compared with the copper elbow part 3 of the existing outlet elbow, under the condition that the overall length of the outlet elbow is the same and the copper elbow part has the same bending radius and the same bending angle, the elbow structure in the present application can greatly reduce the copper material used for the copper elbow part, and further reduce the production cost.

[0036] In one example, referring to Figure 3 As shown, the inner diameter of the first welding part 111 is not greater than the outer diameter of the second connecting section 22 and not less than the inner diameter of the second connecting section 22, and the inner diameter of the second welding part 112 is less than the outer diameter of the second connecting section 22 and not less than the inner diameter of the second connecting section 22. The first welding part 111 is sleeved outside the second connecting section 22. Preferably, continuing to refer to Figure 3 As shown, a first limiting step 113 is formed at the connection between the inner wall of the first welding part 111 and the inner wall of the second welding part 112, and the end of the second connecting section 22 is in limiting cooperation with the first limiting step 113. In the above example, the first welding part 111 is sleeved outside the second connecting section 22. That is to say, before welding and fixing, the first connecting section 11 of the straight pipe part 1 and the second connecting section 22 of the copper elbow part 2 have achieved positioning and assembly through interference or transitional shaft-hole type fitting and the limitation of the first limiting step 113. This setting method greatly reduces the assembly difficulty between the copper elbow part 2 and the straight pipe part 1, improves the assembly efficiency, and is beneficial to ensuring the concentricity between the second connecting section 22 and the first connecting section 11, the main body section 12 and the cylinder. At the same time, the limitation of the first limiting step 113 is also beneficial to realizing standardized assembly operations, which is beneficial to the standardized production of the outlet elbow products, improves the product quality and the yield rate at the same time.

[0037] Furthermore, referring to Figure 3 As shown, a second limiting step 1123 is provided on the side of the welding boss 1121 away from the first welding part 111, and the second limiting step 1123 is used for limiting cooperation with the air outlet port of the cylinder. In one example, continuing to refer to Figure 3As shown, the outer diameter of the first connecting section 11 is greater than that of the main body section 12. A mating guiding portion 114 is provided at the connection between the first connecting section 11 and the main body section 12, and the mating guiding portion 114 is connected to the second limiting step 1123. Preferably, the mating guiding portion 114 is a guiding inclined surface provided at one end of the second limiting step 1123 facing the main body section 12. It should be noted here that the structure and setting method of the mating guiding portion 114 in this application are not limited to the above example. The above example is only a preferred example of this application. In this application, the mating guiding portion 114 can also adopt other more different structures and setting methods, and this application does not make specific limitations on this.

[0038] Through the setting of the above-mentioned mating guiding portion 114 and the second limiting step 1123, the positioning and assembly difficulty between the air outlet straight pipe and the cylinder body is greatly reduced, and the straight pipe portion 1 is facilitated to maintain good concentricity with the cylinder body by the limitation of the second limiting step 1123.

[0039] Continue to refer to Figure 3 As shown, a first welding place 1111 is provided at the end of the first welding portion 111, and a second welding place 1122 is provided on the second limiting step 1123. By adopting this setting method, the distance between the first welding place 1111 and the second welding place 1122 can be enlarged, so that the influence on the structure of the first welding place 1111 during the welding of the straight pipe portion 1 and the cylinder body can be further reduced, and the problem that the welding point between the straight pipe portion 1 and the copper elbow portion 2 is damaged or penetrated can be further avoided.

[0040] As a preferred implementation manner of this application, continue to refer to Figure 3 As shown, the welding boss 1121 is also provided with a welding guiding portion 1124. Along the axial direction of the first connecting section 11, the welding guiding portion 1124 is provided on the side of the second limiting step 1123 facing the first welding portion 111. During the actual assembly process, the edge of the air outlet port of the cylinder body will abut against the second limiting step 1123. Through the setting of the welding guiding portion 1124, it is convenient to quickly position the welding point, can provide an operating space for welding, and can shorten the radial welding distance, avoiding the problem that the internal weld of the radial welding distance is too long and affects the welding quality.

[0041] In a preferred example, refer to Figure 3As shown, the welding guiding portion 1124 is a welding inclined surface connected to the second limiting step 1123. A transition arc surface 115 is provided at the corner of the second limiting step 1123, and a transition arc surface 115 is also provided at the connection between the welding inclined surface and the second limiting step 1123. In the above exemplary solution, the welding inclined surface has a simple structure and is convenient for processing and forming during the integral forming process of the integral straight pipe portion 1. The inclined surface structure is also convenient for accumulating heat between the second limiting step 1123 and the cylindrical structure for welding and fixing. The setting of the above transition arc surface 115 facilitates the melted solder or the partially melted welding boss 1121 used as solder to enter the joint between the second limiting step 1123 and the cylindrical structure, improving the welding quality and welding efficiency.

[0042] It should be noted here that the structures and setting manners of the welding guiding portion 1124 and the second limiting step 1123 in this application are not limited to the above examples. The above examples are only a preferred example of this application. The welding guiding portion 1124 and the second limiting step 1123 can also adopt other more different structures and setting manners, and this application does not make specific limitations on this.

[0043] What is not described in this application can be achieved by adopting or referring to the existing technologies.

[0044] Each embodiment in this specification is described in a progressive manner. The same or similar parts among the embodiments can be referred to each other, and the key points of each embodiment are the differences from other embodiments.

[0045] The above are only the embodiments of this application and are not used to limit this application. For those skilled in the art, this application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the scope of the claims of this application.

Claims

1. A liquid storage bent pipe structure, characterized in that: It includes a straight pipe part and a copper bent pipe part, the straight pipe part includes an integrally formed main body section and a first connecting section, the first connecting section is arranged at one end of the main body section and includes a first welding part and a second welding part that are interconnected, a first welding point is arranged on the side of the first welding part away from the second welding point, the first welding point is used for welding and connecting with the copper bent pipe part, a welding boss is formed on the outer wall of the second welding part and extends radially along the first connecting section in a direction away from the first connecting section, and the outer diameter of the welding boss is greater than the outer diameter of the main body section, a second welding point is arranged on the side of the welding boss away from the first welding point, and the second welding point is used for welding and connecting with the cylinder.

2. The liquid reservoir elbow structure according to claim 1, characterized in that: The copper elbow portion includes a bending portion and a second connecting segment and a third connecting segment arranged at two ends of the bending portion, the second connecting segment is cooperatively connected to the first welding portion and the length of the second connecting segment is smaller than that of the third connecting segment.

3. The liquid reservoir elbow structure according to claim 2, characterized in that: The inner diameter of the first welding portion is not larger than the outer diameter of the second connecting section and not smaller than the inner diameter of the second connecting section, the inner diameter of the second welding portion is smaller than the outer diameter of the second connecting section and not smaller than the inner diameter of the second connecting section, and the first welding portion is sleeved on the outside of the second connecting section.

4. The liquid storage bent pipe structure according to claim 3, characterized in that: A first limiting step is formed at a connection between the inner wall of the first welding portion and the inner wall of the second welding portion, and an end of the second connecting section is limitedly matched with the first limiting step.

5. The liquid reservoir elbow structure according to claim 2, characterized in that: Along the axial direction of the first connecting section, a second limiting step is provided on a side of the welding boss away from the first welding portion, and the second limiting step is used for limiting cooperation with the air outlet port of the cylinder.

6. The liquid reservoir elbow structure according to claim 5, characterized in that: The outer diameter of the first connecting section is greater than the outer diameter of the main body section. A matching guide portion is provided at the connection between the first connecting section and the main body section, and the matching guide portion is connected to the second limiting step.

7. The liquid storage elbow structure according to claim 5, characterized in that: The welding boss is provided with a welding guide portion, and the welding guide portion is arranged on a side of the second limiting step facing the first welding portion along the axial direction of the first connecting section.

8. The liquid storage elbow structure according to claim 7, characterized in that: The welding guide portion is a welding inclined surface connected to the second limiting step, and a transition arc surface is arranged at a corner of the second limiting step.

9. The liquid storage elbow structure according to claim 8, characterized in that: A transition arc surface is provided at the connection between the welding inclined surface and the second limiting step.

10. The liquid storage elbow structure according to claim 5, characterized in that: The first welding point is disposed at the end of the first welding portion, and the second limiting step is disposed at the second welding point.

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