Air conditioner compressor accumulator elbow

Abstract

The application discloses an air conditioner compressor liquid accumulator elbow pipe, and belongs to the field of liquid accumulators. The air conditioner compressor liquid accumulator elbow pipe comprises a copper straight pipe and a main body section. The main body section comprises an integrally-formed vertical straight pipe section, an elbow pipe section and a horizontal straight pipe section which are sequentially connected. The outer side of the vertical straight pipe section is provided with a welding boss. After the copper straight pipe is inserted into the horizontal straight pipe section, the copper straight pipe and the main body section are connected by welding the outer wall of the copper straight pipe and the end face of the mouth part of the horizontal straight pipe section. By adopting the air conditioner compressor liquid accumulator elbow pipe, the main body section is made of iron or steel material. Only the mouth part of the horizontal straight pipe section is connected with the copper straight pipe at the port which needs to be connected with the compressor. The use range of the copper material is limited to the minimum necessary area. Compared with the copper elbow pipe structure, the consumption of the copper material is significantly reduced. The copper straight pipe is simpler to process, and the qualified rate is higher. The main body section contains the elbow pipe section which is easier to process by using iron or steel material. The cost is reduced, and the cost of the copper material can be offset partially. The comprehensive manufacturing cost is significantly reduced.

Description

Technical Field

[0001] This application belongs to the field of air conditioning liquid receivers, and particularly relates to an air conditioning compressor liquid receiver bend. Background Technology

[0002] In a refrigeration system, the compressor, as the core power component, directly determines the performance and reliability of the entire system through its stable operation. The receiver, as a crucial component of the compressor, effectively intercepts liquid refrigerant, ensuring that only gaseous refrigerant enters the compressor, thus providing reliable protection and guaranteeing the stable operation of the refrigeration system. Existing receivers typically include core components such as a cylinder, an inlet pipe, and a receiver straight pipe. The inlet pipe is located at one end of the cylinder to introduce the refrigerant; the receiver straight pipe is located at the other end of the cylinder, and its structure includes an outlet bend connected to the compressor's suction port and a straight pipe located inside the cylinder and passing through a cylinder baffle. This structural design aims to achieve gas-liquid separation and orderly flow of the refrigerant, ensuring that the refrigerant entering the compressor is purely gaseous. Regarding materials, the outlet bend is typically made of copper. This choice is primarily based on the good welding compatibility between copper and the compressor's suction port pipe material, ensuring welding quality and thus guaranteeing a reliable connection and sealing performance between the receiver and the compressor. Meanwhile, to reduce manufacturing costs, the straight pipe section often uses lower-cost steel or other materials.

[0003] For example, patent number 202422218016.1 proposes an improved reservoir bend structure, designed with copper for the bend and an integrally formed welded boss on the straight section, eliminating a welding step and reducing copper material usage. However, while this solution addresses the welding process and copper consumption issues to some extent, the manufacturing process for the copper bend is relatively complex, requiring specialized processing equipment and technology, which increases manufacturing costs. Therefore, developing a reservoir bend structure that is more rational, lower in cost, and more reliable is of significant practical importance for reducing enterprise production costs. This demonstrates that existing technologies require further improvement and enhancement. Utility Model Content

[0004] This utility model provides a liquid receiver bend for an air conditioner compressor, which solves the problems of high cost of copper material and complex manufacturing process of copper bend in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: An air conditioning compressor receiver bend includes a copper straight pipe and a main body section. The main body section includes a vertical straight pipe section, a bend section, and a horizontal straight pipe section that are integrally formed and connected in sequence. A welding boss is provided on the outer side of the vertical straight pipe section. After the copper straight pipe is inserted into the horizontal straight pipe section, the copper straight pipe is connected to the main body section by welding the end face of the horizontal straight pipe section to the outer wall of the copper straight pipe.

[0006] In a preferred implementation, the copper straight pipe is inserted into the horizontal straight pipe section to a depth of 1 / 3 to 2 / 3 of the length of the horizontal straight pipe section.

[0007] In the preferred implementation, the length of the copper straight pipe without the inserted horizontal straight pipe section is less than twice the length of the horizontal straight pipe section but greater than the length of the horizontal straight pipe section.

[0008] In a preferred embodiment, the outer wall of the copper straight pipe is provided with a limiting part, the copper straight pipe is inserted into the horizontal straight pipe section, the limiting part is located above the end face of the horizontal straight pipe section, and a welding space is formed between the two and filled with solder.

[0009] In a preferred implementation, the horizontal straight pipe section includes a thin-walled section and a thick-walled section, the inner diameter of the thin-walled section is larger than the inner diameter of the thick-walled section, and the outer wall of the copper straight pipe abuts against the inner wall of the thin-walled section.

[0010] In a preferred implementation, the sum of the wall thickness of the copper straight tube and the wall thickness of the thin-walled horizontal straight tube is less than or equal to the wall thickness of the thick-walled section.

[0011] In a preferred implementation, a conical transition section with a gradually decreasing inner diameter is also included between the thin-walled section and the thick-walled section.

[0012] In a preferred implementation, after the vertical straight pipe section is inserted into the reservoir cylinder, there is no solder welding between the welding boss and the cylinder.

[0013] In a preferred implementation, the main body segment is an iron pipe segment.

[0014] The above structure has the following beneficial effects: By adopting the air conditioning compressor receiver bend of this application, the main body is made of iron or steel, with copper straight pipes only connected to the horizontal straight pipe section at the port where it needs to connect to the compressor. This design limits the use of copper to the minimum necessary area, significantly reducing copper consumption compared to a copper bend structure. In a traditional bend structure, the entire length is made of copper, while in the new structure, the copper straight pipe only occupies the port portion, greatly reducing copper usage. The main body, if made of iron or steel, can be integrally formed through stamping, bending, and other processes, resulting in higher production efficiency than copper processing. Because copper is relatively soft, it is prone to cracking or micro-cracks due to excessive localized stress during bending, leading to defective products. Therefore, copper pipes are chosen for their simpler processing and higher pass rate as straight pipes. The main body, including the bend section, is made of easier-to-process iron or steel, and the reduced cost offsets some of the copper cost, resulting in a significant decrease in overall manufacturing cost. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain this application and do not constitute an undue limitation of the present invention. In the drawings: Figure 1 A schematic three-dimensional structural diagram of one embodiment of the liquid receiver bend of the air conditioner compressor of this application is shown; Figure 2 A schematic cross-sectional structural diagram of one embodiment of the liquid receiver bend of the air conditioning compressor of this application is shown; Label Explanation: 1. Copper straight pipe; 2. Main body section; 20. Vertical straight pipe section; 200. Welding boss; 21. Bend section; 22. Horizontal straight pipe section; 220. Thin-walled section; 221. Thick-walled section; 222. Conical transition section; 3. Solder. Detailed Implementation

[0016] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit and scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0017] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In this utility model, unless otherwise expressly specified and limited, the first feature being "upper" or "lower" than the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium.

[0018] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies at the connection point are not connected by an intermediate structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0019] In this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0020] The present invention will now be described with reference to the accompanying drawings.

[0021] The specific solution adopted is as follows: like Figure 1-2 As shown, this utility model provides an air conditioner compressor receiver bend pipe, including a copper straight pipe 1 and a main body section 2. The main body section includes a vertical straight pipe section 20, a bend pipe section 21 and a horizontal straight pipe section 22 that are integrally formed and connected in sequence. A welding boss 200 is provided on the outer side of the vertical straight pipe section. After the copper straight pipe is inserted into the horizontal straight pipe section, the copper straight pipe is connected to the main body section by welding the end face of the horizontal straight pipe section to the outer wall of the copper straight pipe.

[0022] By adopting the air conditioning compressor receiver bend of this application, the main body is made of iron or steel, with copper straight pipes only connected to the horizontal straight pipe section at the port where it needs to connect to the compressor. This design limits the use of copper to the minimum necessary area, significantly reducing copper consumption compared to a copper bend structure. In a traditional bend structure, the entire length is made of copper, while in the new structure, the copper straight pipe only occupies the port portion, greatly reducing copper usage. The main body, if made of iron or steel, can be integrally formed through stamping, bending, and other processes, resulting in higher production efficiency than copper processing. Because copper is relatively soft, it is prone to cracking or micro-cracks due to excessive localized stress during bending, leading to defective products. Therefore, copper pipes are chosen for their simpler processing and higher pass rate as straight pipes. The main body, including the bend section, is made of easier-to-process iron or steel, and the reduced cost offsets some of the copper cost, resulting in a significant decrease in overall manufacturing cost.

[0023] In a preferred embodiment of this application, the copper straight pipe 1 is inserted into the horizontal straight pipe section to a depth of 1 / 3 to 2 / 3 of the length of the horizontal straight pipe section. If the insertion depth is too shallow, such as less than 1 / 3 of the length of the horizontal straight pipe section, the contact area between the copper straight pipe and the horizontal straight pipe section will be insufficient, and the load-bearing capacity after welding will be insufficient. It will also be prone to loosening under vibration or thermal expansion and contraction. If the insertion depth is greater than 1 / 3 of the length of the horizontal straight pipe section, it can ensure that there is enough contact interface to form a sufficient bonding contact surface and improve the tensile strength. If the depth is too deep, such as >2 / 3 of the length of the horizontal straight pipe section, although the connection strength is high enough, it will increase the amount of copper pipe used, which is not conducive to reducing costs.

[0024] Furthermore, the exposed length must meet the connection dimensions of the compressor's suction port. Therefore, the length of the copper straight pipe not inserted into the horizontal straight pipe section is set to be less than twice the length of the horizontal straight pipe section but greater than the length of the horizontal straight pipe section. If the exposed length is too short, it may be difficult to form sufficient bonding contact during welding, which may lead to structural loosening later. If it is too long, it will increase the cost of copper materials and make it prone to deformation during transportation. Through the above design, copper material consumption can be reduced while ensuring connection reliability.

[0025] In a preferred embodiment of this application, the outer wall of the copper straight pipe 1 is provided with a limiting part. The copper straight pipe is inserted into the horizontal straight pipe section, and the limiting part is located above the end face of the opening of the horizontal straight pipe section, forming a welding space between the two and filling it with solder.

[0026] A gap is maintained between the limiting part and the end face of the opening to form a closed or semi-closed welding space, providing a stable environment for the filling of solder 3 and preventing the solder from reaching the upper part of the copper tube and the connection with the air intake. The limiting part can be an integrally formed annular protrusion: the solder only fills between the limiting part and the end face of the opening. By limiting the flow direction of the molten solder through the limiting part, it is easier to form a uniform weld.

[0027] See Figure 2 The horizontal straight pipe section 22 includes a thin-walled section 220 and a thick-walled section 221. The inner diameter of the thin-walled section is larger than that of the thick-walled section, and the outer wall of the copper straight pipe abuts against the inner wall of the thin-walled section. If all horizontal straight pipe sections use the same wall thickness as the thick-walled sections when inserted into the copper straight pipe, the actual flow diameter will decrease after the copper straight pipe is inserted, which will increase the flow resistance and ultimately lead to an increase in system energy consumption.

[0028] Furthermore, if the sum of the copper straight tube wall thickness and the thin-walled section wall thickness exceeds the thick-walled section wall thickness, the actual flow diameter after inserting the copper straight tube will be smaller than the inner diameter of the thick-walled section, resulting in a local reduction in the flow cross-sectional area. Therefore, in this embodiment, the sum of the copper straight tube wall thickness and the thin-walled horizontal straight tube wall thickness is less than or equal to the thick-walled section wall thickness, which not only meets the flow resistance requirements but also allows for a certain degree of thinning of the copper straight tube to save copper material.

[0029] In addition, a step is formed between the thin-walled section and the thick-walled section. This step serves as a limiting position for the insertion of the copper straight tube, which can ensure the consistency of the insertion depth of the copper tube. There is also a conical transition section with a gradually decreasing inner diameter between the thin-walled section and the thick-walled section. The 90° step increases the flow resistance and the probability of noise generation. In this embodiment, the conical transition section 222 guides the fluid to always adhere to the wall surface within the transition section, stabilizing the flow field, with low flow resistance and low noise.

[0030] As a preferred embodiment of this application, after the vertical straight pipe section is inserted into the reservoir cylinder, the welding boss is welded to the cylinder without solder. The welding boss is stepped. The vertical straight pipe section and the reservoir cylinder are connected by resistance welding without solder using the welding boss. Mechanical positioning is achieved through the shape of the boss. Combined with the high efficiency and pollution-free characteristics of resistance welding, the structural strength, sealing performance and production efficiency can be significantly improved.

[0031] As a preferred embodiment of this application, the main body is an iron pipe section, thereby reducing the cost of pipe bending. The corrosion resistance of the iron pipe can be improved through subsequent painting or galvanizing processes.

[0032] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0033] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A bend in the liquid receiver of an air conditioner compressor, characterized in that, It includes a copper straight pipe and a main body section. The main body section includes a vertical straight pipe section, a bend pipe section and a horizontal straight pipe section that are integrally formed and connected in sequence. The outer side of the vertical straight pipe section is provided with a welding boss. After the copper straight pipe is inserted into the horizontal straight pipe section, the copper straight pipe is connected to the main body section by welding the end face of the horizontal straight pipe section to the outer wall of the copper straight pipe.

2. The bend in the liquid receiver of the air conditioner compressor according to claim 1, characterized in that, The copper straight pipe is inserted into the horizontal straight pipe section to a depth of 1 / 3 to 2 / 3 of the length of the horizontal straight pipe section.

3. The bend in the liquid receiver of the air conditioner compressor according to claim 2, characterized in that, The length of the copper straight pipe without the horizontal straight pipe section is less than twice the length of the horizontal straight pipe section but greater than the length of the horizontal straight pipe section.

4. The bend in the liquid receiver of the air conditioner compressor according to claim 1, characterized in that, The outer wall of the copper straight pipe is provided with a limiting part. The copper straight pipe is inserted into the horizontal straight pipe section. The limiting part is located above the end face of the horizontal straight pipe section. The two form a welding space to be filled with solder.

5. The bend in the liquid receiver of the air conditioner compressor according to claim 1, characterized in that, The horizontal straight pipe section includes a thin-walled section and a thick-walled section. The inner diameter of the thin-walled section is larger than that of the thick-walled section, and the outer wall of the copper straight pipe abuts against the inner wall of the thin-walled section.

6. The bend in the liquid receiver of the air conditioner compressor according to claim 5, characterized in that, The sum of the wall thickness of the copper straight pipe and the wall thickness of the thin-walled section of the horizontal straight pipe is less than or equal to the wall thickness of the thick-walled section.

7. The air conditioning compressor receiver bend according to claim 5, characterized in that, Between the thin-walled section and the thick-walled section, there is also a conical transition section with a gradually decreasing inner diameter.

8. The bend in the liquid receiver of the air conditioner compressor according to claim 1, characterized in that, After the vertical straight pipe section is inserted into the reservoir cylinder, there is no solder between the welding boss and the cylinder.

9. The air conditioning compressor receiver bend according to claim 1, characterized in that, The main body section is an iron pipe section.

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