Liquid accumulator
By setting angles between the crimping part of the reservoir cylinder and the connector assembly and using copper or carbon steel copper-plated material, the leakage problem at the welding is solved, high-strength connection and high-quality welding are achieved, and production costs are reduced.
Patent Information
- Application Number
- CN202410045121.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-11
- Publication Date
- 2025-07-11
AI Technical Summary
In the prior art, when the iron reservoir cylinder is welded with a copper pipe, fine pores are easily generated at the welding point, resulting in refrigerant leakage, and insufficient connection strength.
The crimping part of the connecting pipe assembly is designed to be arranged at an angle with the connecting end of the reservoir cylinder. Through resistance welding, the crimping part has sufficient thickness and is closely matched with the connecting end. The copper or carbon steel copper-plated connecting pipe assembly of the same material is used to improve the connection strength.
The connection strength between the reservoir cylinder and the connector is improved, the risk of leakage at the welding point is reduced, the welding quality is high, and the production cost is reduced.
Smart Images
Figure CN120292759A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of air conditioners, and particularly to a liquid accumulator. Background Art
[0002] The liquid accumulator is an important component in an air conditioner, which functions to store, separate gas and liquid, filter, suppress noise, and buffer the refrigerant. After the iron liquid accumulator cylinder body is integrally formed, it needs to be welded to a copper connecting pipe so that the liquid accumulator cylinder body can be connected to the copper pipeline in the air conditioner unit through the connecting pipe. In the related art, there is a method of applying pressure to the cylinder body and the connecting pipe of different materials through resistance welding for welding. However, due to the relatively thin wall thickness of the side walls at the port of the cylinder body and the side wall of the connecting pipe, during the resistance welding pressure application process, fine holes are likely to be generated at the welding joint of the cylinder body and / or the connecting pipe, resulting in refrigerant leakage. Summary of the Invention
[0003] Based on this, it is necessary to provide a liquid accumulator, which is beneficial to improving the connection strength between the liquid accumulator cylinder body and the connecting pipe and reducing the occurrence of leakage.
[0004] The liquid accumulator includes a cylinder body and a connecting pipe assembly; a liquid storage cavity is formed inside the cylinder body; a connecting end is provided at one end of the cylinder body, and a circulation port is formed in the connecting end; the connecting pipe assembly is provided with a lumen penetrating along its own axis, and the connecting pipe assembly includes a pipe body and a seat body connected to the pipe body. At least part of the seat body is inserted into the circulation port and is provided with a crimping portion. The lumen is communicated with the liquid storage cavity. The surface of the crimping portion facing the connecting end is a crimping surface, and the crimping surface is arranged at an angle with respect to the axial direction and the radial direction of the cylinder body respectively. Along the axial direction of the cylinder body, the outer diameter dimension of the crimping portion gradually increases in the direction towards the pipe body; wherein, a mating surface is formed at the port of the connecting end, and the mating surface can be tightly pressed against the crimping surface and welded by resistance welding.
[0005] It can be understood that the connecting pipe assembly is welded to the cylinder body of the liquid accumulator through the seat body, and the seat body is inserted into the circulation port to facilitate cooperation with the inner wall of the connecting end. Among them, the crimping portion can be pressed against the mating surface of the connecting end to achieve a tight fit. Since the outer diameter dimension of the crimping portion gradually increases in the direction towards the pipe body, the crimping portion has sufficient thickness for welding and melting. At the same time, when the connecting end is welded and melted at the mating surface, it will not affect the thickness of other parts of the connecting end, and has little impact on the overall structural strength of the connecting end. Therefore, the connection between the cylinder body and the seat body has sufficient connection strength, high welding quality, and can reduce or avoid leakage at the connection between the connecting pipe assembly and the cylinder body. At the same time, since the pipe body and the seat body are of the same material, the connection between the two is easier and leakage is not likely to occur.
[0006] In one embodiment, the projection of the crimping surface along the radial direction of the seat body forms an angle α with the thickness direction of the side wall of the seat body, and α is between 20° and 80°.
[0007] It can be understood that by defining the angle of the crimping surface, the mating area can be appropriately increased and the connection strength can be improved.
[0008] In one embodiment, along the radial direction of the cylinder body, the dimension a of the crimping portion accounts for 50% - 70% of the dimension h of the end face of the connection end; and / or, along the axial direction of the cylinder body, the dimension b of the crimping portion accounts for 45% - 65% of the dimension d of the seat body inserted into the flow port; and / or, along the axial direction of the cylinder body, the dimension d of the seat body inserted into the flow port accounts for 40% - 70% of the dimension D of the connection end.
[0009] It can be understood that by defining the dimensions of the crimping portion along the radial direction and the axial direction of the cylinder body, it is ensured that the crimping portion has sufficient dimensions for welding, which is beneficial to improving the welding quality. By defining the dimension of the seat body inserted into the flow port, it is beneficial to ensure the stability of the seat body assembled in the flow port and not easily cause a great impact on the structural strength of the connection end.
[0010] In one embodiment, the seat body further has a limiting portion, the limiting portion protrudes along the radial direction of the seat body, and the limiting portion abuts against the end face of the connection end.
[0011] It can be understood that by the limiting portion abutting against the end face of the connection end, the depth of the seat body inserted into the flow port is limited, which is beneficial to achieving rapid positioning and assembly.
[0012] In one embodiment, the seat body has a first through hole penetrating along its own axis, the pipe body is provided with a second through hole penetrating along its own axial direction, and the first through hole and the second through hole are communicated to form the pipe cavity; the pipe body and the seat body are integrally formed.
[0013] It can be understood that the integrally formed setting can obtain the connecting pipe assembly through one processing, and the operation is simple.
[0014] In one embodiment, the seat body has a first through hole penetrating along its own axis, the pipe body is provided with a second through hole penetrating along its own axial direction, and the first through hole and the second through hole are communicated to form the pipe cavity; the pipe body and the seat body are separately arranged and connected.
[0015] It can be understood that the pipe body and the seat body are separately arranged to facilitate separate processing, with low processing difficulty and being beneficial to mass production.
[0016] In one embodiment, the tube body is inserted into the first through hole, the seat body and the tube body are interference fit, and solder is filled between the outer peripheral wall of the tube body and the hole wall of the first through hole.
[0017] It can be understood that the interference fit ensures the tightness of the fit between the seat body and the tube body, and the welding is achieved by the solder penetrating between the outer peripheral wall of the tube body and the hole wall of the first through hole.
[0018] In one embodiment, the first through hole is configured with a gradually expanding structure along its axis toward one end of the tube body, and the inner diameter of the gradually expanding structure gradually increases along the axis of the first through hole toward the tube body.
[0019] It can be understood that the provision of the gradually expanding structure is beneficial to increasing the initial penetration space of the solder and improving the permeability of the solder.
[0020] In one embodiment, an angle β is formed between a projection of the gradually expanding structure along the radial direction of the seat body and a thickness direction of the side wall of the tube body, and the angle β is between 20° and 80°.
[0021] It can be understood that such an arrangement is used to ensure the gradual expansion of the gradual expansion structure, thereby ensuring a larger space for solder to enter.
[0022] In one embodiment, along the radial direction of the connecting pipe assembly, the minimum dimension t1 of the gradually expanding structure accounts for 90% to 95% of the maximum dimension t2 of the gradually expanding structure.
[0023] It can be understood that such a configuration not only appropriately increases the initial space for solder penetration, but also facilitates the solder to be quickly filled into the gradually expanding structure, thereby accelerating the welding speed. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0025] Figure 1 A cross-sectional view of a reservoir provided for this application;
[0026] Figure 2 for Figure 1 A partial enlarged view of the middle A;
[0027] Figure 3 A cross-sectional view of a pipe assembly in a liquid reservoir provided in the present application;
[0028] Figure 4For Figure 3 Partial enlarged view at B in
[0029] Figure 5 Isometric view of the connecting pipe assembly in the liquid storage device provided by the present application.
[0030] Reference numerals: 100, liquid storage device; 10, cylinder body; 101, liquid storage cavity; 102, circulation port; 11, connection end; 111, mating surface; 20, connecting pipe assembly; 201, pipe cavity; 21, pipe body; 2101, second through hole; 22, seat body; 2201, first through hole; 22011, gradually expanding structure; 221, crimping portion; 2211, crimping surface; 222, limiting portion. Specific embodiments
[0031] In order to make the above objects, features and advantages of the present application more obvious and understandable, the following detailed description of the specific embodiments of the present application will be made in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.
[0032] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or there can also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of the present application are only for the purpose of illustration and do not represent the only implementation manner.
[0033] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.
[0034] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first feature is in direct contact with the second feature, or the first feature is in indirect contact with the second feature through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is lower than that of the second feature.
[0035] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the related listed items.
[0036] Please refer to Figures 1 to 5 , this application provides a liquid storage device 100, which includes a cylinder body 10 and a connecting pipe assembly 20; a liquid storage cavity 101 is formed inside the cylinder body 10; a connecting end 11 is provided at one end of the cylinder body 10, and a communication port 102 is formed on the connecting end 11; the connecting pipe assembly 20 is formed with a lumen 201 penetrating along its own axis, and the lumen 201 can communicate with the liquid storage cavity 101 through the communication port 102; the connecting pipe assembly 20 includes a pipe body 21 and a seat body 22 connected to the pipe body 21, at least part of the seat body 22 is inserted into the communication port 102 and is formed with a crimping portion 221, the surface of the crimping portion 221 facing the connecting end 11 is a crimping surface 2211, and the crimping surface 2211 is arranged at an angle to the axial and radial directions of the cylinder body 10 respectively, that is, the crimping surface 2211 is an inclined surface. Along the axial direction of the cylinder body 10, the outer diameter dimension of the crimping portion 221 gradually increases in the direction towards the pipe body 21; wherein, a mating surface 111 is formed at the port of the connecting end 11, and the mating surface 111 can be pressed against the crimping surface 2211 and welded by resistance welding.
[0037] Among them, the accumulator 100 is mainly used in the air-conditioning system. The accumulator 100 is connected between the indoor unit and the compressor, and can filter and store the liquid refrigerant in the refrigerant output by the indoor unit, and then discharge the gaseous refrigerant to the compressor to achieve the purpose of preventing liquid slugging. Since the air-conditioning pipeline mainly uses copper pipelines, the cylinder body 10 of the accumulator 100 is equipped with a connecting pipe assembly 20 at the connecting end 11. The connecting pipe assembly 20 is made of copper or made by plating copper on carbon steel, so as to be welded and connected with the copper pipeline. Among them, the connecting pipe assembly 20 made of copper can directly select copper pipes for processing during processing, and the operation is simple. The connecting pipe assembly 20 made by plating copper on carbon steel has higher hardness, can also meet the connection with the copper pipeline, and the price of carbon steel is lower, which is beneficial to reducing the production cost. Specifically, the copper layer plated on the surface of the carbon steel is more than 0.2 mm to ensure the connection strength. Exemplarily, the thickness of the copper layer is 0.2 mm, 0.5 mm or 1 mm.
[0038] Thus, in order to realize the inflow and outflow of the fluid, the connecting pipe assembly 20 is connected to the connecting end 11 so that the pipe cavity 201 communicates with the communication port 102. Specifically, the connecting pipe assembly 20 is connected to the connecting end 11 through the seat body 22. The seat body 22 is inserted into the communication port 102, and the outer wall of the seat body 22 can cooperate with and limit the inner wall of the connecting end 11 to ensure the stability of the assembly of the seat body 22 before welding. At the same time, the seat body 22 is provided with a crimping portion 221 pressed on the connecting end 11. The crimping surface 2211 of the crimping portion 221 is mutually attached to the mating surface 111 of the connecting end 11 and is mutually extruded during the welding process. Under resistance welding, the material at the crimping surface 2211 of the crimping portion 221 melts or is in a plastic state, and the material at the mating surface 111 of the connecting end 11 melts, thereby realizing the metal combination of the crimping surface 2211 and the mating surface 111.
[0039] Furthermore, when welding is performed using resistance welding, the local part is heated by the resistance heat, and the heat is controlled and concentrated between the mating surface 111 and the crimping surface 2211. Moreover, the mating surface 111 and the crimping surface 2211 are also inclined planes and have a larger thickness dimension, which has little influence on the parts of the connecting end 11 that do not cooperate with the crimping surface 2211, and will not reduce the thickness dimension of other parts of the connecting end 11. The connecting end 11 as a whole has sufficient structural strength. In addition, along the axial direction of the cylinder body 10, the outer diameter dimension of the crimping portion 221 gradually increases in the direction towards the pipe body 21, so that the crimping portion 221 also has sufficient thickness for welding and melting, is not easy to affect the wall thickness of the seat body 22, is beneficial to improving the connection strength, enhancing the welding quality, and reducing leakage.
[0040] In a specific embodiment, during the resistance welding process, after the surface temperature of the welded parts rises, the welded parts can be brought into close contact by applying pressure, thereby achieving welding. The high temperature on the surface of the welded parts will oxidize the metal surface and form an oxide layer. This oxide layer will reduce the electrical conductivity of the metal, increase the resistance value of the welded parts, and thus generate more heat. This heat can further heat the welded parts to make the welding more solid. Resistance welding does not require filler metal, has high productivity, small deformation of the welded parts, and there will be no phenomena such as broken welding, pores, and poor solder penetration in the welded workpieces, and the airtightness is better.
[0041] Furthermore, the welding direction of resistance welding is perpendicular to the crimping surface 2211. Therefore, the dimension of the connecting end 11 in the direction perpendicular to the crimping surface 2211 at the mating surface 111 is the dimension for welding and melting. In this way, the dimension of the connecting end 11 for welding and melting is further increased, and it is not easy to reduce the overall wall thickness of the connecting end 11. Furthermore, the connection strength can be improved, and the welding part is located at the port of the cylinder 10, reducing the risk of leakage due to holes generated by welding on the side wall of the cylinder 10.
[0042] As Figures 1 to 3 shown, in a specific embodiment, the seat body 22 has a first through hole 2201 running through its own axis, and the tube body 21 is provided with a second through hole 2101 running through its own axis. The first through hole 2201 and the second through hole 2101 are communicated to form a tube cavity 201, so as to be communicated with the liquid storage cavity 101.
[0043] As Figures 1 to 3 shown, in an alternative embodiment, the seat body 22 further has a limiting portion 222. The limiting portion 222 protrudes along the radial direction of the seat body 22. The limiting portion 222 abuts against the end face of the connecting end 11. The limiting portion 222 and the end face of the connecting end 11 can be mutually limited along the axial direction of the seat body 22 to ensure the stable assembly of the seat body 22 and limit the depth of insertion of the seat body 22 into the connecting end 11.
[0044] As Figure 3 shown, in an alternative embodiment, the projection of the crimping surface 2211 along the radial direction of the seat body 22 forms an angle α with the thickness direction of the side wall of the seat body 22. α is between 20° and 80°. That is, the crimping surface 2211 is set as an inclined surface. Since the welding direction is perpendicular to the crimping surface 2211, different inclined angles of the crimping surface 2211 correspond to different welding thicknesses of the connecting end 11 and the crimping portion 221. Therefore, by limiting the angle of the crimping surface 2211, the connecting end 11 and the crimping portion 221 can have sufficient welding dimensions to ensure the welding quality. Exemplarily, α = 20°, 45° or 80°.
[0045] As Figure 2As shown, in a further embodiment, along the radial direction of the cylinder body 10, the dimension a of the crimping portion 221 accounts for 50% - 70% of the dimension h of the end face of the connecting end 11, so that the crimping portion 221 has sufficient dimension along the radial direction of the cylinder body 10 for welding, ensuring the welding quality and connection strength. In a specific embodiment, along the radial direction of the cylinder body 10, the dimension a of the crimping portion 221 accounts for 50%, 60% or 70% of the dimension h of the end face of the connecting end 11.
[0046] As Figure 2 shown, in a further embodiment, along the axial direction of the cylinder body 10, the dimension b of the crimping portion 221 accounts for 45% - 65% of the dimension d of the seat body 22 inserted into the flow port 102, so that the crimping portion 221 has sufficient dimension along the axial direction of the cylinder body 10 to cooperate with the mating surface 111 of the connecting end 11, increasing the mating area and ensuring the connection strength. In a specific embodiment, along the axial direction of the cylinder body 10, the dimension b of the crimping portion 221 accounts for 45%, 50% or 65% of the dimension d of the seat body 22 inserted into the flow port 102.
[0047] As Figure 1 and Figure 2 shown, in a further embodiment, along the axial direction of the cylinder body 10, the dimension d of the seat body 22 inserted into the flow port 102 accounts for 40% - 70% of the dimension D of the connecting end 11, to ensure that there is sufficient mating and limiting area between the outer wall of the seat body 22 and the inner wall of the connecting end 11, promoting the stability of the assembly of the seat body 22 relative to the connecting end 11, and controlling the depth of the seat body 22 inserted into the connecting end 11 to avoid interference with the structure inside the cylinder body 10 due to excessive insertion depth. In a specific embodiment, along the axial direction of the cylinder body 10, the dimension d of the seat body 22 inserted into the flow port 102 accounts for 40%, 50% or 70% of the dimension D of the connecting end 11.
[0048] In some embodiments, the pipe body 21 and the seat body 22 are integrally formed. In this way, the pipe body 21 and the seat body 22 can be processed in one step without further connection, which is beneficial to reducing the assembly steps, and the pipe body 21 and the seat body 22 are not easily leaked due to the connection between the two.
[0049] In other embodiments, the pipe body 21 and the seat body 22 are welded together. That is, the pipe body 21 and the seat body 22 are separately provided, which is beneficial to their respective processing and then assembly. The processing is simple and it is beneficial to realize batch production.
[0050] During actual operation, the pipe body 21 and the seat body 22 can be welded first to form the connecting pipe assembly 20, and then the connecting pipe assembly 20 is connected to the cylinder body 10. Or the seat body 22 can be welded to the cylinder body 10 first, and then the seat body 22 is connected to the pipe body 21. Specifically, the welding of the pipe body 21 and the seat body 22 can adopt furnace welding, flame welding, etc. Among them, the furnace welding method is beneficial to reducing the inclusions at the weld, the weld is more uniform, full, and the welding quality is higher.
[0051] like Figures 1 to 3 As shown, in a specific embodiment, part of the tube body 21 is inserted into the first through hole 2201, and the seat body 22 and the tube body 21 are interference fit, so as to achieve a close fit between the inner wall of the seat body 22 and the outer wall of the tube body 21, improve the accuracy during assembly, and avoid the relative shaking of the two along the radial direction of the pipe assembly 20. Further, solder is filled between the outer peripheral wall of the tube body 21 and the hole wall of the first through hole 2201, and the solder is melted and cooled to achieve welding connection. In other embodiments, the seat body 22 can also be inserted into the second through hole 2101, and the seat body 22 and the tube body 21 are interference fit, and solder is filled between the outer peripheral wall of the seat body 22 and the hole wall of the second through hole 2101.
[0052] like Figures 2 to 4 As shown, in a further embodiment, the first through hole 2201 is configured with a gradually expanding structure 22011 along its own axis toward one end of the tube body 21, and the inner diameter of the gradually expanding structure 22011 gradually increases along the axis of the first through hole 2201 toward the tube body 21, thereby increasing the entrance for solder filling, allowing the solder to fully penetrate into between the tube body 21 and the seat body 22, promoting uniform solder filling, and helping to improve welding quality and avoid fluid leakage.
[0053] like Figure 4 As shown, in a further embodiment, the projection of the gradually expanding structure 22011 along the radial direction of the seat body 22 forms an angle β with the thickness direction of the side wall of the tube body 21, and the angle β is between 20° and 80°. By limiting the angle of the gradually expanding structure 22011, the degree of gradual expansion of the gradually expanding structure 22011 can be controlled, providing a larger space for the entry of solder, promoting the full entry of solder, and at the same time, avoiding the gradual expansion of the gradually expanding structure 22011 from being too large, saving the amount of solder filled in the gradually expanding structure 22011 while ensuring full penetration of solder. In a specific embodiment, β=20°, 45° or 80°.
[0054] like Figure 3 As shown, in a further embodiment, along the radial direction of the pipe assembly 20, the minimum dimension t1 of the gradually expanding structure 22011 accounts for 90% to 95% of the maximum dimension t2 of the gradually expanding structure 22011, so as to ensure that the spatial dimension of the gradually expanding structure 22011 satisfies the requirement for sufficient solder filling and penetration, and the solder can fill the gradually expanding structure 22011 in a shorter time, thus shortening the processing time and improving production efficiency. In a specific embodiment, along the radial direction of the pipe assembly 20, the minimum dimension t1 of the gradually expanding structure 22011 accounts for 90%, 92% or 95% of the maximum dimension t2 of the gradually expanding structure 22011.
[0055] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.
[0056] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application shall be subject to the appended claims.
Claims
1. A liquid reservoir, characterized in that, Including: A cylinder body (10) with a liquid storage cavity (101) internally constructed; one end of the cylinder body (10) is provided with a connection end (11), and the connection end (11) is constructed with a circulation port (102); A connection pipe assembly (20) constructed with a pipe cavity (201) penetrating along its own axis. The connection pipe assembly (20) includes a pipe body (21) and a seat body (22) connected to the pipe body (21). At least part of the seat body (22) is inserted into the circulation port (102) and is constructed with a crimping part (221). The pipe cavity (201) is communicated with the liquid storage cavity (101). The surface of the crimping part (221) facing the connection end (11) is a crimping surface (2211). The crimping surface (2211) is arranged at an angle with the axis and the radial direction of the cylinder body (10) respectively. Along the axis of the cylinder body (10), the outer diameter dimension of the crimping part (221) gradually increases in the direction towards the pipe body (21); Wherein, a mating surface (111) is constructed at the port of the connection end (11), and the mating surface (111) can be pressed tightly against the crimping surface (2211) and welded by resistance welding.
2. The liquid storage container according to claim 1, wherein, The projection of the crimping surface (2211) along the radial direction of the seat body (22) forms an angle α with the thickness direction of the side wall of the seat body (22), and α is between 20° and 80°.
3. The liquid storage device according to claim 2, wherein, Along the radial direction of the cylinder body (10), the dimension a of the crimping part (221) accounts for 50% - 70% of the end face dimension h of the connection end (11); and / or, along the axis of the cylinder body (10), the dimension b of the crimping part (221) accounts for 45% - 65% of the dimension d of the seat body (22) inserted into the circulation port (102); and / or, along the axis of the cylinder body (10), the dimension d of the seat body (22) inserted into the circulation port (102) accounts for 40% - 70% of the dimension D of the connection end (11).
4. The liquid reservoir according to claim 1, characterized in that, The seat body (22) further has a limiting part (222), and the limiting part (222) protrudes along the radial direction of the seat body (22), and the limiting part (222) abuts against the end face of the connection end (11).
5. The liquid reservoir according to any one of claims 1 to 4, characterized in that The seat body (22) has a first through hole (2201) penetrating along its own axis, and the pipe body (21) is provided with a second through hole (2101) penetrating along its own axis. The first through hole (2201) and the second through hole (2101) are communicated to form the pipe cavity (201); the pipe body (21) and the seat body (22) are integrally formed.
6. The liquid reservoir according to any one of claims 1 to 4, characterized in that The seat body (22) has a first through hole (2201) penetrating along its own axis, and the pipe body (21) is provided with a second through hole (2101) penetrating along its own axis. The first through hole (2201) and the second through hole (2101) are communicated to form the pipe cavity (201); the pipe body (21) and the seat body (22) are separately arranged and connected.
7. The liquid reservoir according to claim 6, characterized in that, A part of the pipe body (21) is inserted into the first through hole (2201), the seat body (22) is in interference fit with the pipe body (21), and a solder is filled between the outer peripheral wall of the pipe body (21) and the hole wall of the first through hole (2201).
8. The liquid reservoir according to claim 7, characterized in that, One end of the first through hole (2201) along its own axis towards the pipe body (21) is constructed with a gradually expanding structure (22011), and the inner diameter of the gradually expanding structure (22011) gradually increases along the axis of the first through hole (2201) towards the pipe body (21).
9. The liquid reservoir according to claim 8, wherein, An included angle β is formed between the projection of the gradually expanding structure (22011) along the radial direction of the seat body (22) and the thickness direction of the side wall of the pipe body (21), and the included angle β is between 20° and 80°.
10. The liquid storage container according to claim 8, characterized in that, Along the radial direction of the connecting pipe assembly (20), the minimum dimension t1 of the gradually expanding structure (22011) accounts for 90% - 95% of the maximum dimension t2 of the gradually expanding structure (22011).