Air conditioner reservoir elbow

Abstract

This application discloses an air conditioning liquid receiver bend, relating to the field of refrigeration equipment technology; it includes an exhaust pipe body and a connecting pipe; the exhaust pipe body has an integrally formed straight pipe section and a bend section; an exhaust port is provided on one side of the bend section; the connecting pipe includes a connecting section, a transition section and a positioning section, the positioning section has a welding area that is welded to the bend section, the transition section is connected to the end of the positioning section away from the bend section, and the connecting section is connected to the end of the transition section away from the positioning section; the exhaust pipe body is made of iron pipe; the connecting pipe is constructed as a copper pipe structure from the connecting section to the positioning section, or, the connecting pipe is constructed as having at least a partial copper plating layer on the inner and outer surfaces along the axial direction from the outward end face of the connecting section, or, the connecting pipe is constructed as a composite plate stamped inner iron pipe and outer copper pipe structure from the connecting section to the positioning section, or, the connecting pipe is constructed as an inner iron pipe and an outer laser-clad copper pipe structure.

Description

Technical Field

[0001] This application belongs to the field of refrigeration equipment technology, specifically relating to an air conditioning liquid receiver bend. Background Technology

[0002] During air conditioning system operation, it cannot be guaranteed that all refrigerant will vaporize. To prevent liquid refrigerant from entering the compressor, a receiver-and-discharge tank is usually connected between the evaporator and the air conditioning compressor. The receiver-and-discharge tank mainly consists of a cylinder, an inlet pipe, an outlet pipe, and a filter. The filter is connected inside the cylinder, the inlet pipe is connected to the evaporator, and the outlet pipe is connected to the air conditioning compressor. During operation, the receiver-and-discharge tank physically separates the liquid and gaseous refrigerant. Liquid refrigerant exiting the evaporator enters the receiver-and-discharge tank, where the internal filter traps impurities. Unvaporized liquid refrigerant, being heavier than gas, falls directly to the bottom of the cylinder, while vaporized refrigerant enters the compressor through the outlet pipe, thus preventing the compressor from drawing in liquid refrigerant and causing liquid slugging.

[0003] To enhance welding quality and sealing, the exhaust pipe and the air conditioning compressor are usually connected by welding with all-copper pipes. However, using all-copper pipes not only increases production costs, but also reduces tensile strength and stiffness compared to iron pipes. To achieve the same tensile strength as iron pipes, the radial dimension of the copper pipes needs to be increased, which makes the manufacturing process more complex. Moreover, copper pipes are more prone to scratches or bumps during long-term use, resulting in a reduced service life. To reduce the use of copper pipes, some existing technologies weld a portion of the outlet pipe to copper. For example, patent application number 200620103523.X, entitled "Improved Air Conditioner Compressor Liquid Receiver," involves inserting a copper bend into the weld joint of a steel pipe for welding. However, due to the bent structure, the copper bend's center of gravity is skewed, and the connection between the copper bend and the steel pipe lacks a positioning structure or section, easily leading to misalignment of the bend and the steel pipe, resulting in decreased sealing performance. Other existing technologies, such as patent application number 201620917435.7, entitled "A Composite Air Conditioner Liquid Receiver," use an integrated structure for the outlet pipe, welding a copper sleeve around the bend. The inner surface of the bend is not made of copper, reducing welding quality. Furthermore, this design requires the copper sleeve size to be matched to the outlet pipe size. When matching copper pipes for different sizes of air conditioner compressors, the entire outlet pipe model needs to be changed, and a longer bend needs to be manufactured to match the required copper sleeve length, reducing the outlet pipe's versatility. Utility Model Content

[0004] This application provides an air conditioner receiver bend to address the problem that the outlet pipe and the air conditioner compressor are usually connected by welding with all-copper pipes, which reduces the tensile strength and rigidity compared to iron pipes, resulting in a shorter service life; the connection between the copper bend and the steel pipe lacks a positioning structure, which can easily cause misalignment between the bend and the steel pipe, leading to a decrease in sealing performance; and the inner surface of the bend is not made of copper pipe material, so when it is necessary to match the copper pipe of different sizes of air conditioner compressors, the model of the entire outlet pipe needs to be changed, and the required copper sleeve length requires the corresponding processing of a longer bend, resulting in a decrease in the versatility of the outlet pipe.

[0005] The technical solution adopted in this application is as follows: An air conditioning liquid receiver bend includes an exhaust pipe body and a connecting pipe; the exhaust pipe body has an integrally formed straight pipe section and a bend section; an exhaust port is provided on one side of the bend section; the connecting pipe includes a connecting section, a transition section and a positioning section, the positioning section has a welding area that is welded to the bend section, the transition section is connected to the end of the positioning section opposite to the bend section, and the connecting section is connected to the end of the transition section opposite to the positioning section; The main body of the exhaust pipe is made of iron pipe; The connecting pipe is constructed as a copper pipe structure from the connecting section to the positioning section; or, the connecting pipe is constructed as having at least a partial copper plating layer on the inner and outer surfaces along the axial direction starting from the outward end face of the connecting section; or, the connecting pipe is constructed as a composite plate stamping forming inner iron pipe and outer copper pipe structure from the connecting section to the positioning section; or, the connecting pipe is constructed as an inner iron pipe and outer laser-clad copper pipe structure.

[0006] The exhaust pipe of this application uses an exhaust pipe body and a connecting pipe. The exhaust pipe body includes a straight pipe section and a bent pipe section. The straight pipe section is used to connect to the liquid receiver cylinder, and the bent pipe section extends beyond the liquid receiver cylinder to facilitate connection to the copper pipe of the air conditioning compressor. The straight pipe section and the bent pipe section are integrally formed, avoiding the reduced connection strength caused by traditional welding splicing structures. This application can improve the connection strength and sealing performance of the entire exhaust pipe and reduce the probability of leakage. In order to weld the exhaust pipe to the copper pipe of the air conditioning compressor, this application also connects a connecting pipe to one end of the bent pipe section. By adapting the size of the connecting pipe to the size of the copper pipe of the air conditioning compressor, it can match different types of air conditioning compressors, thereby improving the versatility of the exhaust pipe. The connecting pipe includes a connecting section, a transition section, and a positioning section connected as an integral structure. The positioning section is welded to the bent pipe section to connect the connecting pipe to the exhaust pipe body, ensuring the positioning accuracy of the connecting pipe and the exhaust pipe body. The connecting pipe is extended along the axis from the outward end face of the connecting section. The inner and outer surfaces of the connecting pipe are copper-plated, ensuring that the outward-facing end of the connecting pipe has at least a partial copper plating layer along its extension direction. This allows the copper-plated connecting pipe to be welded to the copper pipe of the air conditioning compressor. Copper pipes can form a permanent, absolutely sealed connection through welding or brazing, resulting in uniform and rapid heating at the welded area. Air conditioning systems operate at high pressures, and even minor leaks can lead to system failure. Therefore, partially copper-plating the connecting pipe of the liquid receiver's exhaust pipe ensures a stable connection to the air conditioning compressor's copper pipe, guaranteeing long-term system stability, while avoiding the need to use a single copper pipe for the entire exhaust pipe. Copper pipes are not only more expensive but also have lower rigidity and tensile strength compared to iron pipes, making them more susceptible to impacts and scratches. This application uses an iron pipe for the main body of the exhaust pipe, while the connecting pipe portion is either copper-plated or made of copper. This reduces the amount of copper used, lowers production costs, increases the overall rigidity of the exhaust pipe, and enhances the connection stability with the copper pipe of the air conditioning compressor.

[0007] In a preferred embodiment, the connecting segment and the positioning segment have a cylindrical structure, and the inner diameter of the connecting segment is smaller than the inner diameter of the positioning segment.

[0008] The connecting section and positioning section of this application adopt a cylindrical structure, which facilitates the welding of the positioning section to the outside of the exhaust pipe body. The cylindrical structure of the connecting section allows gas to be smoothly introduced from the exhaust pipe body into the connecting section and discharged through the exhaust port to the air conditioning compressor. Moreover, the different diameters of the positioning section and the connecting section also facilitate the correct installation position when welding to the exhaust pipe body. The inner diameter of the connecting section is reduced compared to the positioning section, so that the gas velocity reaches the maximum at the moment of exit. The high-speed airflow can generate sufficient shear force to break up the oil droplets and entrain them into the airflow, thereby reliably carrying the lubricating oil back to the air conditioning compressor.

[0009] In a preferred embodiment, the transition section has a conical structure, such that the end of the transition section with a smaller inner diameter along the axial direction is connected to the connecting section, and the end of the transition section with a larger inner diameter along the axial direction is connected to the positioning section.

[0010] The transition section of this application is connected between the positioning section and the connecting section. Since the inner diameters of the positioning section and the connecting section are different, in order to make the positioning section and the connecting section connected, the transition section is made into a conical structure. The end with the smaller diameter is connected to the connecting section, and the end with the larger diameter is connected to the positioning section, so that the connecting pipe forms an integrated structure.

[0011] In a preferred embodiment, the copper plating layer extends from one end of the connecting segment to one end of the positioning segment.

[0012] The purpose of the copper plating layer starting from one end of the connecting section in this application is that the connecting section of the connecting pipe is first welded to the copper pipe of the air conditioner compressor. Therefore, it is necessary to ensure that the connecting section of the connecting pipe has a copper plating layer. The coverage length of the connecting pipe from one end of the connecting section along the extension direction of the connecting pipe is adaptively adjusted according to the required welding length of the copper pipe of the air conditioner compressor to ensure the welding connection size with the copper pipe of the air conditioner compressor.

[0013] In a preferred embodiment, the exhaust pipe body includes an exhaust pipe body and a connecting assembly; the exhaust pipe body includes a straight pipe section and a bent pipe section connected to each other; the bent pipe section extends beyond the cylinder of the liquid reservoir, and the connecting assembly is connected to the outer circumferential surface of the straight pipe section, the connecting assembly being used for welding connection with the cylinder of the liquid reservoir.

[0014] The exhaust pipe body of this application includes an exhaust pipe body and a connecting assembly. The connecting assembly is used to position and connect the straight section of the exhaust pipe body to the liquid receiver cylinder, ensuring the installation position of the exhaust pipe body and preventing the exhaust pipe body from being misaligned inside the liquid receiver cylinder. The curved section of the exhaust pipe body extends beyond the liquid receiver cylinder and has an exhaust port. Air can be discharged into the air conditioning compressor through the exhaust port, while liquid remains inside the liquid receiver cylinder to prevent liquid slugging and damage to the air conditioning compressor.

[0015] In a preferred embodiment, the connecting assembly includes an integrally formed first connecting ring, a second connecting ring, and a third connecting ring; the first connecting ring is connected to the outer periphery of the straight pipe section near the bend, and the third connecting ring is connected to the outer periphery of the straight pipe section away from the bend; the second connecting ring is connected between the first connecting ring and the third connecting ring.

[0016] The first and third connecting rings of the connecting assembly of this application are respectively connected to both sides of the second connecting ring, which can enhance the connection strength between the second connecting ring and the straight pipe section, further enhance the connection strength between the connecting assembly and the liquid reservoir body, and prevent bending deformation or leakage at the connection between the connecting assembly and the liquid reservoir body. Preferably, the first and third connecting rings are symmetrically connected to both sides of the second connecting ring. The purpose is to allow the load from the liquid reservoir body to pass through the second connecting ring and into the first and third connecting rings to be evenly transmitted to both sides along a symmetrical path, avoiding stress concentration and enhancing the connection stability between the exhaust pipe and the liquid reservoir.

[0017] In a preferred embodiment, the side of the first connecting ring facing the bend has a first chamfer; the side of the third connecting ring away from the bend has a second chamfer.

[0018] This application connects one side of the first connecting ring to the first chamfer and one side of the third connecting ring to the second chamfer, removing sharp edges, facilitating assembly and avoiding stress concentration. Moreover, since the third connecting ring needs to be connected to the inside of the reservoir body, even if there is a slight misalignment between the exhaust pipe and the hole in the reservoir body, the third chamfer on one side of the third connecting ring can guide the exhaust pipe to slide smoothly into the hole without jamming or damaging the mating surface due to minor misalignment, and it will not cause wear to the hole wall.

[0019] In a preferred embodiment, the radial height of the first connecting ring is less than the radial height of the second connecting ring, and the radial height of the third connecting ring is less than the radial height of the second connecting ring.

[0020] The radial height of the first connecting ring in this application is smaller than the radial height of the second connecting ring. The purpose is to enable the first connecting ring to be placed inside the liquid reservoir cylinder, and the second connecting ring to be welded to the hole wall of the liquid reservoir cylinder, so that the straight pipe section of the exhaust pipe body can be smoothly introduced into the liquid reservoir cylinder and can be welded to the liquid reservoir cylinder.

[0021] In a preferred embodiment, the end of the second connecting ring opposite to the first connecting ring has a guide slope, which is welded to the cylinder wall of the liquid reservoir through the guide slope, so that the exhaust pipe body is connected to the cylinder of the liquid reservoir.

[0022] The second connecting ring of this application has a guide slope on the side opposite to the first connecting ring, that is, the side facing the liquid reservoir cylinder. The guide slope forms an annular surface along the circumference of the second connecting ring, so that the outer diameter of the second connecting ring gradually increases from the side closer to the third connecting ring to the side closer to the first connecting ring. When the first connecting ring is inserted into the liquid reservoir cylinder, the annular surface of the second connecting ring can abut against the hole wall of the liquid reservoir cylinder. This not only restricts the movement of the straight pipe section along the axial direction of the hole, so that the exhaust pipe is positioned and connected to the liquid reservoir cylinder, but also can adapt to different hole wall sizes of liquid reservoir cylinders, ensuring the coaxiality of the exhaust pipe and the hole of the liquid reservoir cylinder, and strengthening the connection strength between the liquid reservoir cylinder and the exhaust pipe.

[0023] In a preferred embodiment, the end of the positioning segment facing the bend segment has a third chamfer, so that a molten-filled annular space is formed between the positioning segment and the bend segment.

[0024] The purpose of the third chamfer on the side of the positioning section facing the bend section in this application is to facilitate the formation of an annular space between the positioning section and the bend section, so that the solder can be filled into the annular space. Alternatively, when resistance welding is used, the material of the two connecting structures can be melted and filled into the annular space to achieve the welding connection between the exhaust pipe body and the connecting pipe, ensuring the uniformity and aesthetics of the filling and enhancing the connection strength.

[0025] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows: 1. The exhaust pipe of this application uses an exhaust pipe body and a connecting pipe for connection. The exhaust pipe body includes a straight pipe section and a bent pipe section. The straight pipe section is used to connect to the cylinder of the liquid receiver, and the bent pipe section extends beyond the liquid receiver cylinder to facilitate connection to the copper pipe of the air conditioning compressor. The straight pipe section and the bent pipe section are integrally formed, avoiding the reduced connection strength caused by traditional welding and splicing structures. This application can improve the connection strength and sealing performance of the entire exhaust pipe and reduce the probability of leakage. In order to weld the exhaust pipe to the copper pipe of the air conditioning compressor, this application also connects a connecting pipe to one end of the bent pipe section. By adapting the size of the connecting pipe to the size of the copper pipe of the air conditioning compressor, it is possible to match different types of air conditioning compressors, thereby improving the versatility of the exhaust pipe. The connecting pipe includes a connecting section, a transition section, and a positioning section that are connected into an integrated structure. The positioning section and the bend section are welded together to connect the connecting pipe to the exhaust pipe body, ensuring the positioning accuracy of the connecting pipe and the exhaust pipe body. Copper plating is applied to the inner and outer surfaces of the connecting pipe along the axial direction, starting from the outward-facing end face of the connecting section. This ensures that the outward-facing end of the connecting pipe has at least a partial copper plating layer along its extension direction, allowing the copper-plated connecting pipe to be welded to the copper pipe of the air conditioning compressor. Because copper pipes can form a permanent, absolutely sealed connection through welding or brazing, the welded area is heated evenly and at a faster rate. Air conditioning systems have high pressure and are prone to leakage; even a small leak can lead to system failure. Therefore, the exhaust pipe connecting pipe of the receiver is partially copper-plated, ensuring both connection to the copper pipe of the air conditioning compressor and long-term stable operation of the system.

[0026] Copper pipes are not only more expensive, but also have lower rigidity and tensile strength compared to iron pipes, making them more susceptible to impacts and scratches. This application uses an iron pipe for the main body of the exhaust pipe, while the connecting pipe is made of copper-plated material or copper pipe. This avoids the problems of traditional methods that use copper pipes or copper-plated materials for the entire liquid reservoir exhaust pipe, increasing production costs and reducing the overall tensile strength and rigidity of the exhaust pipe. This application improves the overall rigidity of the exhaust pipe while reducing the amount of copper pipe used, lowering production costs, ensuring uniform and dense welds, enhancing the connection stability with the copper pipe of the air conditioning compressor, making subsequent leak detection easier, and improving production efficiency and product qualification rate. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is an overall structural diagram of an air conditioning liquid receiver bend according to one embodiment of this application; Figure 2This is a cross-sectional structural diagram of an air conditioning liquid receiver bend according to one embodiment of this application; Figure 3 This is a partial cross-sectional schematic diagram of an air conditioning liquid receiver bend according to one embodiment of this application; In the picture, 1. Exhaust pipe body; 2. Connecting pipe; 21. Positioning section; 22. Transition section; 23. Connecting section; 3. Exhaust pipe body; 31. Straight pipe section; 32. Bend section; 4. Connecting components; 41. First connecting ring; 42. Second connecting ring; 43. Third connecting ring; 5. Guide bevel; 6. First chamfer; 7. Second chamfer; 8. Third chamfer; 9. Oil outlet. Detailed Implementation

[0028] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0029] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 application.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] In this application, unless otherwise expressly specified and limited, the "above" or "below" of 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. In the description of this specification, references to terms such as "implementation," "example," "a particular embodiment," "example," or "specific example," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0032] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0033] This application relates to a bend in an air conditioning liquid receiver, such as... Figure 1-3 As shown, it includes an exhaust pipe body 1 and a connecting pipe 2; the exhaust pipe body 1 has an integrally formed straight pipe section 31 and a bent pipe section 32; an exhaust port is provided on one side of the bent pipe section 32; the connecting pipe 2 includes a connecting section 23, a transition section 22 and a positioning section 21, the positioning section 21 has a welding area that is welded to the bent pipe section 32, the transition section 22 is connected to the end of the positioning section 21 away from the bent pipe section 32, and the connecting section 23 is connected to the end of the transition section 22 away from the positioning section 21; The exhaust pipe body 1 is made of iron pipe; The connecting pipe 2 is constructed as a copper pipe structure from the connecting section 23 to the positioning section 21, or the connecting pipe 2 is constructed as having at least a partial copper plating layer on the inner and outer surfaces along the axial direction starting from the outward end face of the connecting section 23, or the connecting pipe is constructed as a composite plate stamping forming inner iron pipe and outer copper pipe structure from the connecting section to the positioning section, or the connecting pipe is constructed as an inner iron pipe and outer laser-clad copper pipe structure.

[0034] The exhaust pipe of this application consists of an exhaust pipe body 1 and a connecting pipe 2. The exhaust pipe body 1 includes a straight pipe section 31 and a bent pipe section 32. The straight pipe section 31 is used to connect to the cylinder of the liquid receiver, and the bent pipe section 32 extends beyond the liquid receiver cylinder to facilitate connection with the copper pipe of the air conditioning compressor. The straight pipe section 31 and the bent pipe section 32 are integrally formed, avoiding the reduced connection strength caused by traditional welding and splicing structures. This application can improve the connection strength and sealing performance of the entire exhaust pipe and reduce the probability of leakage. In order to connect the exhaust pipe to the air conditioning compressor... In this application, a connecting pipe 2 is also connected to one end of the bent pipe section 32. By adapting the size of the connecting pipe 2 to the size of the copper pipe of the air conditioner compressor, different types of air conditioner compressors can be matched, thereby improving the versatility of the exhaust pipe. The connecting pipe 2 includes a connecting section 23, a transition section 22, and a positioning section 21 connected as an integrated structure. The positioning section 21 is welded to the bent pipe section 32 to connect the connecting pipe 2 to the exhaust pipe body 1. The connecting pipe 2 is connected along the axis from the outward end face of the connecting section 23. Copper plating is applied to the inner and outer surfaces of the connecting pipe 2, so that the outward end of the connecting pipe 2 has at least a partial copper plating layer along its extension direction. This allows the copper-plated connecting pipe 2 to be welded to the copper pipe of the air conditioning compressor. Since copper pipes can form a permanent, absolutely sealed connection through welding or brazing, and air conditioning systems are subject to high pressure and prone to leakage, any minor leak can lead to system failure. Therefore, by providing a partial copper plating layer to the connecting pipe 2 of the liquid receiver's exhaust pipe, it is possible to ensure connection with the copper pipe of the air conditioning compressor, ensuring the long-term stable operation of the system, and to avoid using copper pipes for the entire exhaust pipe. Copper pipes are not only more expensive, but also have lower rigidity and tensile strength than iron pipes, making them more susceptible to impacts or scratches. In this application, the exhaust pipe body 1 of the exhaust pipe is entirely made of iron pipe, while the connecting pipe 2 connected to the exhaust pipe body 1 is partially copper-plated or made of copper pipe. This reduces the amount of copper pipe used, lowers production costs, increases the overall rigidity of the exhaust pipe, and enhances the connection stability with the copper pipe of the air conditioning compressor.

[0035] The connecting pipe 2 is constructed as a copper pipe structure from the connecting section 23 to the positioning section 21. After the copper pipe 2 is connected to the exhaust pipe body 1, it is then welded to the copper pipe of the air conditioning compressor. Alternatively, the connecting pipe 2 can be made of iron pipe, and the inner and outer surfaces of the connecting pipe 2 along the axial direction from the outward end face of the connecting section 23 have at least a partial copper plating layer. The connecting pipe 2 is copper plated before being welded to the copper pipe of the air conditioning compressor. Preferably, the thickness of the copper plating layer along the radial direction of the connecting pipe 2 is set to 5~10μm, which can maximize the welding quality of the copper plating layer and the copper pipe of the compressor. Because a thin copper plating layer is prone to discontinuous plating, it will be damaged again under the high temperature of brazing, resulting in the exposure of the iron pipe below, thereby reducing the welding quality. If it is too thick, it will lead to an increase in internal stress, which may reduce the bonding force between the plating layer and the steel substrate.

[0036] In addition, it should be noted that the straight pipe section 31 is also provided with an oil outlet hole for lubrication.

[0037] In a preferred embodiment, the connecting section 23 and the positioning section 21 are cylindrical in shape, and the inner diameter of the connecting section 23 is smaller than the inner diameter of the positioning section 21.

[0038] The connecting section 23 and the positioning section 21 of this application adopt a cylindrical structure, which facilitates the welding of the positioning section 21 to the outside of the exhaust pipe body 1. The cylindrical structure of the connecting section 23 allows the gas to be smoothly introduced from the exhaust pipe body 1 into the connecting section 23 and discharged through the exhaust port to the air conditioning compressor. Moreover, the different diameters of the positioning section 21 and the connecting section 23 also facilitate the correct installation position when welding with the exhaust pipe body 1. The inner diameter of the connecting section 23 is reduced compared to the positioning section 21, so that the gas reaches its maximum speed at the moment of departure. The high-speed airflow can generate sufficient shear force to break up the oil droplets and entrain them into the airflow, thereby reliably carrying the lubricating oil back to the air conditioning compressor.

[0039] In a preferred embodiment, the transition section 22 has a conical structure, such that the end of the transition section 22 with a smaller inner diameter along the axial direction is connected to the connecting section 23, and the end of the transition section 22 with a larger inner diameter along the axial direction is connected to the positioning section 21.

[0040] The transition section 22 of this application is connected between the positioning section 21 and the connecting section 23. Since the inner diameters of the positioning section 21 and the connecting section 23 are different, in order to make the positioning section 21 and the connecting section 23 connected, the transition section 22 is made into a conical structure. The end with the smaller diameter is connected to the connecting section 23, and the end with the larger diameter is connected to the positioning section 21, so that the connecting pipe 2 forms an integrated structure.

[0041] In a preferred embodiment, the copper plating layer extends from one end of the connecting section 23 to one end of the positioning section 21.

[0042] The purpose of the copper plating layer starting from one end of the connecting section 23 in this application is that the connecting section 23 of the connecting pipe 2 is first welded to the copper pipe of the air conditioner compressor. Therefore, it is necessary to ensure that the connecting section 23 of the connecting pipe 2 has a copper plating layer. The coverage length of the connecting pipe 2 from one end of the connecting section 23 along the extension direction of the connecting pipe 2 is adaptively adjusted according to the required welding length of the copper pipe of the air conditioner compressor to ensure the welding connection size with the copper pipe of the air conditioner compressor.

[0043] In a preferred embodiment, the exhaust pipe body 1 includes an exhaust pipe body 3 and a connecting component 4; the exhaust pipe body 3 includes a straight pipe section 31 and a bent pipe section 32 connected to each other; the bent pipe section 32 extends beyond the cylinder of the liquid reservoir, and the outer peripheral surface of the straight pipe section 31 is connected to the connecting component 4, which is used for welding connection with the cylinder of the liquid reservoir.

[0044] The exhaust pipe body 1 of this application includes an exhaust pipe body 3 and a connecting component 4. The connecting component 4 is used to position and connect the straight section 31 of the exhaust pipe body 3 to the liquid reservoir body, ensuring the installation position of the exhaust pipe body 3 and preventing the exhaust pipe body 3 from being misaligned inside the liquid reservoir body. The curved section 32 of the exhaust pipe body 3 extends out of the liquid reservoir body and has an exhaust port. Air can be discharged into the air conditioning compressor through the exhaust port, while liquid is stored in the liquid reservoir body to prevent liquid slugging and damage to the air conditioning compressor.

[0045] In a preferred embodiment, the connecting component 4 includes an integrally formed first connecting ring 41, a second connecting ring 42, and a third connecting ring 43; the first connecting ring 41 is close to the bend section 32 and connected to the outer periphery of the straight section 31, and the third connecting ring 43 is away from the bend section 32 and connected to the outer periphery of the straight section 31; the second connecting ring 42 is connected between the first connecting ring 41 and the third connecting ring 43.

[0046] The first connecting ring 41 and the third connecting ring 43 of the connecting assembly 4 of this application are respectively connected to both sides of the second connecting ring 42, which can enhance the connection strength between the second connecting ring 42 and the straight pipe section 31, further enhance the connection strength between the connecting assembly 4 and the liquid reservoir body, and prevent bending deformation or leakage at the connection between the connecting assembly 4 and the liquid reservoir body. Preferably, the first connecting ring 41 and the third connecting ring 43 are symmetrically connected to both sides of the second connecting ring 42. The purpose is to allow the load from the liquid reservoir body to pass through the second connecting ring 42 into the first connecting ring 41 and the third connecting ring 43 and be evenly transmitted to both sides along a symmetrical path, avoiding stress concentration and enhancing the connection stability between the exhaust pipe and the liquid reservoir.

[0047] In a preferred embodiment, the side of the first connecting ring 41 facing the bend section 32 has a first chamfer 6; the side of the third connecting ring 43 away from the bend section 32 has a second chamfer 7.

[0048] This application connects one side of the first connecting ring 41 to the first chamfer 6 and one side of the third connecting ring 43 to the second chamfer 7, removing sharp edges, facilitating assembly and avoiding stress concentration. Moreover, since the third connecting ring 43 needs to be connected to the inside of the reservoir body, even if there is a slight misalignment between the exhaust pipe and the hole in the reservoir body, the third chamfer 8 on one side of the third connecting ring 43 can guide the exhaust pipe to slide smoothly into the hole without jamming or damaging the mating surface due to minor misalignment, and it will not cause wear to the hole wall.

[0049] In a preferred embodiment, the radial height of the first connecting ring 41 is less than the radial height of the second connecting ring 42, and the radial height of the third connecting ring 43 is less than the radial height of the second connecting ring 42.

[0050] The radial height of the first connecting ring 41 in this application is less than the radial height of the second connecting ring 42. The purpose is to enable the first connecting ring 41 to be placed inside the liquid reservoir cylinder, and the second connecting ring 42 to be welded to the hole wall of the liquid reservoir cylinder, so that the straight pipe section 31 of the exhaust pipe body 1 can be smoothly introduced into the liquid reservoir cylinder and can be welded to the liquid reservoir cylinder.

[0051] In a preferred embodiment, the end of the second connecting ring 42 facing away from the first connecting ring 41 has a guide slope 5, which is welded to the cylinder wall of the liquid reservoir through the guide slope 5, so that the exhaust pipe body 1 is connected to the cylinder of the liquid reservoir.

[0052] The second connecting ring 42 of this application has a guide slope 5 on the side opposite to the first connecting ring 41, that is, the side facing the liquid reservoir cylinder. The guide slope 5 forms an annular surface along the circumference of the second connecting ring 42, so that the outer diameter of the second connecting ring 42 gradually increases from the side near the third connecting ring 43 to the side near the first connecting ring 41. When the first connecting ring 41 is inserted into the liquid reservoir cylinder, the annular surface of the second connecting ring 42 can abut against the hole wall of the liquid reservoir cylinder. This not only restricts the movement of the straight pipe section 31 along the axial direction of the hole, so that the exhaust pipe is positioned and connected to the liquid reservoir cylinder, but also adapts to different hole wall sizes of liquid reservoir cylinders, ensuring the coaxiality of the exhaust pipe and the hole of the liquid reservoir cylinder, and strengthening the connection strength between the liquid reservoir cylinder and the exhaust pipe.

[0053] In a preferred embodiment, the end of the positioning segment 21 facing the bend segment 32 has a third chamfer 8, so that a molten-filled annular space is formed between the positioning segment 21 and the bend segment 32.

[0054] The purpose of the third chamfer 8 on the side of the positioning section 21 facing the bend section 32 is to facilitate the formation of an annular space between the positioning section 21 and the bend section 32, thereby filling the annular space with solder. Alternatively, when resistance welding is used, the materials of the two connecting structures themselves melt and fill the annular space, achieving a welded connection between the exhaust pipe body 1 and the connecting pipe 2, ensuring uniformity and aesthetics of the filling, and enhancing the connection strength. Specifically, the exhaust pipe body 1 and the connecting pipe 2 can be connected by brazing, resistance welding, or laser welding, without specific limitations, depending on actual needs.

[0055] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0056] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0057] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. An air conditioning liquid receiver bend, characterized in that, The device includes an exhaust pipe body and a connecting pipe; the exhaust pipe body has an integrally formed straight pipe section and a bent pipe section; an exhaust port is provided on one side of the bent pipe section; the connecting pipe includes a connecting section, a transition section and a positioning section, the positioning section has a welding area that is welded to the bent pipe section, the transition section is connected to the end of the positioning section away from the bent pipe section, and the connecting section is connected to the end of the transition section away from the positioning section. The main body of the exhaust pipe is made of iron pipe; The connecting pipe is constructed as a copper pipe structure from the connecting section to the positioning section; or, the connecting pipe is constructed as having at least a partial copper plating layer on the inner and outer surfaces along the axial direction starting from the outward end face of the connecting section; or, the connecting pipe is constructed as a composite plate stamping forming inner iron pipe and outer copper pipe structure from the connecting section to the positioning section; or, the connecting pipe is constructed as an inner iron pipe and outer laser-clad copper pipe structure.

2. The air conditioning liquid receiver bend according to claim 1, characterized in that, The connecting section and the positioning section have a cylindrical structure, and the inner diameter of the connecting section is smaller than that of the positioning section.

3. The air conditioning liquid receiver bend according to claim 1, characterized in that, The transition section has a conical structure, such that the end of the transition section with a smaller inner diameter along the axial direction is connected to the connecting section, and the end of the transition section with a larger inner diameter along the axial direction is connected to the positioning section.

4. The air conditioning liquid receiver bend according to claim 1, characterized in that, The copper plating layer extends from one end of the connecting segment to one end of the positioning segment.

5. The air conditioning liquid receiver bend according to claim 1, characterized in that, The exhaust pipe body includes an exhaust pipe body and a connecting assembly; the exhaust pipe body includes a straight pipe section and a bent pipe section connected to each other; the bent pipe section extends beyond the cylinder of the liquid reservoir, and the connecting assembly is connected to the outer circumferential surface of the straight pipe section, the connecting assembly being used for welding connection with the cylinder of the liquid reservoir.

6. The air conditioning liquid receiver bend according to claim 5, characterized in that, The connecting assembly includes an integrally formed first connecting ring, a second connecting ring, and a third connecting ring; the first connecting ring is close to the bend section and connected to the outer periphery of the straight pipe section, and the third connecting ring is away from the bend section and connected to the outer periphery of the straight pipe section; the second connecting ring is connected between the first connecting ring and the third connecting ring.

7. The air conditioning liquid receiver bend according to claim 6, characterized in that, The first connecting ring has a first chamfer on the side facing the bend in the pipe section; the third connecting ring has a second chamfer on the side facing away from the bend in the pipe section.

8. An air conditioning liquid receiver bend according to claim 6, characterized in that, The radial height of the first connecting ring is less than the radial height of the second connecting ring, and the radial height of the third connecting ring is less than the radial height of the second connecting ring.

9. An air conditioning liquid receiver bend according to claim 6, characterized in that, The second connecting ring has a guide slope at one end opposite to the first connecting ring. It is welded to the cylinder wall of the liquid reservoir through the guide slope, so that the exhaust pipe body is connected to the cylinder of the liquid reservoir.

10. An air conditioning liquid receiver bend according to claim 1, characterized in that, The end of the positioning section facing the bend section has a third chamfer, so that a molten annular space is formed between the positioning section and the bend section.

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