Liquid storage device and manufacturing method of liquid storage device

Abstract

The invention relates to the technical field of compressors, and particularly discloses a liquid storage device and a manufacturing method, and the liquid storage device comprises a barrel body, a baffle plate and a connecting pipe. The baffle is located in the barrel, the edge of the baffle is connected with the inner wall of the barrel, a mounting hole is formed in the baffle, and a first flange is arranged along the peripheral edge of the mounting hole. The connecting pipe penetrates into the cylinder body and penetrates through the mounting hole, the connecting pipe is in interference fit with the baffle at the mounting hole, a fastening structure is arranged in the circumferential direction of the outer wall of the connecting pipe, the first turned-over edge is arranged on the periphery of the fastening structure in a sleeving mode, and the fastening structure is used for increasing friction force between the first turned-over edge and the outer wall of the connecting pipe. The manufacturing method of the liquid storage device is used for manufacturing the liquid storage device and comprises a spinning necking process, a press-fitting process, a spinning etching process and an interference fit mounting process. According to the liquid accumulator and the manufacturing method, the connecting mode of the baffle and the connecting pipe is simple, the connecting strength is high, and the mounting difficulty of the baffle is reduced; and on the other hand, equipment use is reduced, cost can be reduced, energy consumption is small, and pollution is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a liquid reservoir and a method for manufacturing the liquid reservoir. Background Art

[0002] The liquid accumulator is one of the important components in the air conditioning refrigeration system. It is installed in the air conditioning evaporator and the compressor suction pipe. It is a protective component to prevent liquid refrigerant from flowing into the compressor and causing liquid hammer. Usually, the liquid accumulator is composed of a cavity, an end cover, an air inlet pipe, an air outlet pipe, a baffle and a filter screen, and the air inlet pipe, the air outlet pipe, the baffle and the filter screen are installed in the cavity. The specific manufacturing method of the liquid accumulator in the prior art mainly includes the following steps: forming an upper cavity with a metal pipe; pressing the filter assembly into the upper cavity; fixing the filter assembly in the upper cavity; welding the baffle and the internal metal pipe into one; pressing the baffle welded with the internal metal pipe into the upper cavity; fixing the baffle welded with the internal metal pipe in the upper cavity; stamping the metal sheet into a lower end cover, the lower end cover has at least one mounting hole, and the mounting hole has two shapes of inner flange or outer flange; the lower end cover and the external metal pipe are welded at one time, and the internal metal pipe is welded to the external metal pipe; the lower end cover and the upper cavity are welded.

[0003] During the manufacturing process of this type of liquid storage device, the baffle is connected to the internal metal tube by welding. On the one hand, the welding cost is high, the energy consumption is large, and there is pollution. On the other hand, due to the limited operating space in the upper cavity, when installing the baffle, it is necessary to first weld the internal metal tube to the baffle and then install the baffle with the internal metal tube welded to the upper cavity, which increases the difficulty of installing the baffle. In addition, the contact area between the baffle and the internal metal tube is small, the friction is small, and the connection strength is low.

[0004] Therefore, there is an urgent need to provide a liquid reservoir and a manufacturing method thereof to solve the above problems. Summary of the invention

[0005] According to one aspect of the present invention, the present invention provides a liquid reservoir to solve the problems of difficulty in installing the baffle, low connection strength, high welding cost, high energy consumption and pollution caused by the connection method between the connecting pipe and the baffle in the liquid reservoir in the prior art.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A liquid reservoir, comprising:

[0008] Cylinder;

[0009] A baffle, the baffle is located in the cylinder, the edge of the baffle is connected to the inner wall of the cylinder, a mounting hole is provided on the baffle, and a first flange is provided along the outer peripheral edge of the mounting hole;

[0010] A connecting tube, wherein the connecting tube passes through the cylinder and the mounting hole, the connecting tube is interference-connected with the baffle at the mounting hole, a fastening structure is provided along the circumference of the outer wall of the connecting tube, the first flange is sleeved on the outer circumference of the fastening structure, and the fastening structure is used to increase the friction between the first flange and the outer wall of the connecting tube.

[0011] Optionally, a dimension of the fastening structure in the axial direction of the connecting pipe is larger than a dimension of the first flange in the axial direction of the connecting pipe.

[0012] Optionally, the fastening structure is a plurality of protrusions, or a plurality of ribs arranged along the axial direction of the connecting pipe.

[0013] Optionally, the fastening structure is formed by a spin engraving process.

[0014] Optionally, an extension direction of the first flange is the same as an insertion direction of the connecting tube.

[0015] Optionally, the liquid reservoir further comprises an end cover, the first end of the cylinder has an opening, the end cover is connected to the opening of the cylinder, an assembly hole is provided on the end cover, and the connecting pipe passes through the assembly hole and the installation hole in sequence.

[0016] Optionally, the liquid reservoir further comprises a filter screen, an edge of which is connected to the inner wall of the cylinder, and the connecting pipe passes through the assembly hole, the installation hole and the filter screen in sequence.

[0017] Optionally, a second groove is provided along the circumference of the inner wall of the cylinder, and the edge of the filter is inserted into the second groove.

[0018] Optionally, a first groove is provided along the circumference of the inner wall of the cylinder, and the edge of the baffle is inserted into the first groove.

[0019] According to another aspect of the present invention, a method for manufacturing a liquid storage device is provided to solve the problems in the prior art of low connection strength between the connecting pipe and the baffle, difficulty in installing the baffle, high welding cost, high energy consumption and pollution.

[0020] A method for manufacturing a liquid reservoir, used to manufacture the above-mentioned liquid reservoir, the method for manufacturing the liquid reservoir comprising:

[0021] A stamping process is adopted to stamp a first flange along the peripheral edge of the mounting hole of the baffle; and a rotary engraving process is adopted to rotary engrave a fastening structure along the circumferential direction of the outer wall of the connecting pipe.

[0022] The connecting pipe is installed to the baffle by interference fit.

[0023] The beneficial effects of the present invention are:

[0024] The liquid storage device provided by the present invention includes a cylinder, a baffle and a connecting tube. The baffle is connected to the inner wall of the cylinder to support and fix the connecting tube in the cylinder. A mounting hole is provided on the baffle, and the mounting hole enables an interference connection between the connecting tube and the baffle. Compared with the welding connection between the baffle and the connecting tube in the prior art, this connection method is simple; and it is not limited to the operating space. The baffle can be installed first, and then the baffle and the connecting tube are connected, which reduces the difficulty of installing the baffle. On the other hand, the use of equipment is reduced, the cost is reduced, the energy consumption is small, and there is no pollution. A first flange is provided on the outer peripheral edge of the mounting hole and a fastening structure is provided on the outer wall of the connecting tube, which increases the friction between the first flange and the outer wall of the connecting tube, thereby increasing the connection strength between the baffle and the connecting tube.

[0025] The manufacturing method of the liquid reservoir provided by the present invention is used to manufacture the above-mentioned liquid reservoir, which can make the connection method simple, the connection strength high, the manufacturing and installation difficulty low, the cost low, the energy consumption low, and no pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of a liquid reservoir in an embodiment of the present invention;

[0027] Figure 2 Schematic diagram of the connection structure between the connecting pipe and the baffle in the liquid reservoir in an embodiment of the present invention;

[0028] Figure 3 for Figure 2 A partial enlarged view of point A.

[0029] In the figure:

[0030] 100, cylinder; 200, baffle; 210, first flange; 300, connecting pipe; 310, fastening structure; 400, end cover; 410, second flange; 500, filter screen. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] The present invention provides a liquid reservoir and a method for manufacturing the liquid reservoir, which can make the component connection method simple, the connection strength high, the installation difficulty low, the cost low, the energy consumption low, and no pollution.

[0036] like Figure 1 and Figure 2As shown, the liquid storage device provided by the present invention includes a cylinder 100, a baffle 200 and a connecting pipe 300. The baffle 200 is located in the cylinder 100, the edge of the baffle 200 is connected to the inner wall of the cylinder 100, the baffle 200 is provided with a mounting hole, and a first flange 210 is provided along the outer peripheral edge of the mounting hole. The connecting pipe 300 penetrates the cylinder 100 and passes through the mounting hole, and the connecting pipe 300 is interference-connected with the baffle 200 at the mounting hole, and a fastening structure 310 is provided along the circumference of the outer wall of the connecting pipe 300, and the first flange 210 is sleeved on the outer periphery of the fastening structure 310, and the fastening structure 310 is used to increase the friction between the first flange 210 and the outer wall of the connecting pipe 300.

[0037] The cylinder 100 is provided to form a liquid storage space, the connecting pipe 300 is used as an inlet and outlet channel for gas, and the baffle 200 supports the connecting pipe 300 in the cylinder 100, thereby increasing the service life of the connecting pipe 300 and thus increasing the service life of the liquid storage device. The connecting pipe 300 is connected with the baffle 200 by interference fit, and the interference fit makes the connection strength between the connecting pipe 300 and the baffle 200 high. Moreover, compared with the connection method of the connecting pipe 300 and the baffle 200 in the prior art by welding, this connection method is simple, and when installing the baffle 200, it is not limited to the operating space of the cylinder 100, and the baffle 200 can be installed in the cylinder 100 first and then connected to the connecting pipe 300, without the need to install the baffle 200 with the connecting pipe 300, thereby reducing the difficulty of installing the baffle 200. On the other hand, the equipment and materials used for welding are reduced, the cost is reduced, and the energy consumption is small and there is no pollution.

[0038] The first flange 210 is used to increase the contact area between the outer wall of the connecting pipe 300 and the baffle 200. The fastening structure 310 and the first flange 210 together increase the connection strength between the connecting pipe 300 and the baffle 200, thereby extending the service life of the liquid reservoir.

[0039] In this specific embodiment, the connecting pipe 300 includes an inner pipe and an outer pipe. The inner pipe is located in the cylinder 100, and the outer pipe is connected to one end of the inner pipe. The outer pipe can be a curved pipe to facilitate connection with external equipment pipelines.

[0040] It is worth noting that there can be multiple connecting pipes 300, and the multiple connecting pipes 300 are all connected to the baffle 200 by interference fit. In this specific embodiment, there are two connecting pipes 300, and the connecting pipes 300 include an inner pipe and an outer pipe, the outer pipe is a curved pipe, and the inner pipe and the outer pipe are connected by brazing.

[0041] See also Figure 1The liquid storage device further comprises an end cap 400. The first end of the cylinder 100 has an opening. The end cap 400 is connected to the opening of the cylinder 100. An assembly hole is provided on the end cap 400. The connecting pipe 300 is provided with the assembly hole and the mounting hole in sequence. The cylinder 100 is provided with an opening to facilitate the installation of the baffle 200 and the connecting pipe 300. The end cap 400 is sealed and connected to the opening of the cylinder 100. The assembly hole is used for the connecting pipe 300 to be inserted into the cylinder 100. In some embodiments, a second flange 410 is provided along the periphery of the assembly hole to increase the contact area between the end cap 400 and the connecting pipe 300, thereby increasing the connection strength between the connecting pipe 300 and the end cap 400. The extension direction of the second flange 410 may be the same as the insertion direction of the connecting pipe 300, or may be opposite to the insertion direction of the connecting pipe 300. The present invention does not specifically limit this.

[0042] In this specific embodiment, the cylinder 100 has a second end opposite to the first end, and the second end of the cylinder 100 has a constriction, and the gas enters the external pipe connected to the second end through the constriction. The constriction is provided, and it is not necessary to provide a sealing cover like the end cover 400 for the second end of the cylinder 100.

[0043] It is worth noting that the cylinder 100 with the constricted opening is formed by spinning and constricting a metal pipe.

[0044] In order to filter the gas entering the cylinder 100, the liquid storage device further includes a filter screen 500, the edge of which is connected to the inner wall of the cylinder 100, and the connecting pipe 300 is penetrated by an assembly hole, a mounting hole and the filter screen 500 in sequence.

[0045] See also Figure 2 and Figure 3 Furthermore, the dimension of the fastening structure 310 in the axial direction of the connecting tube 300 is greater than the dimension of the first flange 210 in the axial direction of the connecting tube 300. The fastening structure 310 has a large length, which facilitates the installation and matching between the fastening structure 310 and the first flange 210, and also leaves a margin for adjusting the position of the connecting tube 300 in the cylinder 100, which facilitates the adjustment of the position of the connecting tube 300 in the cylinder 100.

[0046] The fastening structure 310 has various structural forms. In some embodiments, the fastening structure 310 is a plurality of protrusions, which may be a plurality of circles of protrusions along the circumference of the connecting tube 300. The radius of the protrusions is less than or equal to 1 mm. For example, it may be 1 mm, 0.8 mm, 0.6 mm, 0.4 mm or 0.2 mm. In other embodiments, the fastening structure 310 is a plurality of convex ribs arranged along the axial direction of the connecting tube 300. In still other embodiments, the fastening structure 310 is an embossed structure of a specific shape. The specific structural form of the fastening structure 310 is not specifically limited in the present invention, as long as it can increase the friction between the outer wall of the connecting tube 300 and the baffle 200, thereby increasing the connection strength between the connecting tube 300 and the baffle 200.

[0047] In this embodiment, the fastening structure is processed by a rotary engraving process, which is simple and convenient to process.

[0048] Continue as Figure 2 and Figure 3 As shown, the extension direction of the first flange 210 is the same as the insertion direction of the connecting tube 300. The first flange 210 is arranged along the insertion direction of the connecting tube 300, so that the connecting tube 300 can enter the contact part with the first flange 210 after being inserted into the installation hole, and the installation is smooth. In this specific embodiment, a circular arc transition area is arranged at the connection between the first flange 210 and the installation hole, so that the connecting tube 300 can be inserted into the installation hole.

[0049] Furthermore, the connection between the filter screen 500 and the cylinder 100 can be detachable, and a second groove is provided along the circumference of the inner wall of the cylinder 100, and the edge of the filter screen 500 is inserted into the second groove. Compared with welding and other connection methods, this connection method is simple and low in cost.

[0050] Similarly, the baffle 200 and the cylinder 100 can also be connected in a detachable manner, with a first groove provided along the circumference of the inner wall of the cylinder 100, and the edge of the baffle 200 inserted into the first groove. Compared with welding and other connection methods, this connection method is simple and low in cost.

[0051] The present invention also provides a method for manufacturing a liquid reservoir, which is used to manufacture the above-mentioned liquid reservoir, and the method for manufacturing the liquid reservoir comprises:

[0052] S1. A stamping process is used to stamp a first flange 210 along the outer peripheral edge of the mounting hole on the baffle 200 ; a rotary engraving process is used to rotary engrave a fastening structure 310 along the circumferential direction of the outer wall of the connecting pipe 300 .

[0053] S2. Install the connecting pipe 300 to the baffle 200 by interference fit.

[0054] The first flange 210 and the fastening structure 310 are processed to increase the contact area and friction between the baffle 200 and the connecting tube 300, thereby increasing the connection strength between the baffle 200 and the connecting tube 300. The spin engraving process is simple and easy to process.

[0055] Compared with the method of welding the connecting pipe 300 and the baffle 200 in the prior art, the manufacturing method of the liquid reservoir makes it easier to connect the baffle 200 and the connecting pipe 300, and the baffle 200 is easy to install, which reduces the manufacturing difficulty of the liquid reservoir as a whole. At the same time, the manufacturing cost of the liquid reservoir is low, the energy consumption is small, and there is no pollution.

[0056] It is worth noting that the manufacturing method of the liquid storage device specifically further includes the following steps:

[0057] The cylinder 100 is formed by spinning and compression molding process to form one end of the metal pipe.

[0058] The spinning and compression forming process in the steps of the method is an advanced forming process method for continuously and locally plastically accumulating metal pipes into hollow rotating parts. The spinning and compression forming process is to feed the metal pipe into an automatic CNC spinning machine, and expose the part to be formed from it. When the main shaft drives the metal pipe to rotate at high speed, the CNC system automatically controls the spinning wheel to reciprocate according to the prescribed shape trajectory. When the direction is changed each time, a certain amount of lateral feed is given to gradually reduce the outer diameter of the metal pipe to obtain a part with a throat diameter shape, such as the barrel 100 in this embodiment.

[0059] The baffle 200 is press-fitted into the cylinder 100 by using a press-fitting process; a second groove is engraved on the inner wall of the cylinder 100 by using a spinning grooving process, and the edge of the baffle 200 is inserted into the second groove.

[0060] The spinning groove plug-in connection is simple and low-cost.

[0061] The filter screen 500 is press-fitted into the cylinder 100 by using a press-fitting process; a first groove is engraved on the inner wall of the cylinder 100 by using a spinning grooving process, and the edge of the filter screen 500 is inserted into the first groove.

[0062] The metal sheet is punched into an end cover 400 by a stamping process. The end cover 400 has one, two, or more than two assembly holes, and a second flange 410 is punched at the assembly hole.

[0063] The end cover 400 and the opening of the cylinder 100 are welded into shape by using carbon dioxide shielded arc welding, argon arc welding or other melting welding processes.

[0064] The shielding gas of CO2 gas shielded arc welding is CO2. CO2 is cheap, which further reduces the manufacturing cost of the reservoir.

[0065] The complete process steps of the present invention are:

[0066] 1) Using a spinning and compression process, one end of the metal pipe is spun and compressed to form a cylinder 100;

[0067] 2) Using a press-fitting process, the filter screen 500 is press-fitted into the cylinder 100; using a spinning grooving process, a first groove is engraved on the inner wall of the cylinder 100, and the edge of the filter screen 500 is inserted into the first groove;

[0068] 3) Using a stamping process, a first flange 210 is formed by stamping along the outer peripheral edge of the mounting hole of the baffle 200;

[0069] 4) Using a press-fitting process, the baffle 200 with the first flange 210 is press-fitted into the cylinder 100; using a spinning grooving process, a second groove is engraved on the inner wall of the cylinder 100, and the edge of the baffle 200 is inserted into the second groove;

[0070] 5) Using a rotary engraving process, the fastening structure 310 is rotary engraved along the circumference of the outer wall of the connecting tube 300;

[0071] 6) Install the connecting pipe 300 to the baffle 200 by interference fit;

[0072] In steps 4)-6), the baffle 200 is first installed in the cylinder 100, and then the connecting pipe 300 is installed on the baffle 200. Compared with the prior art, it is necessary to first weld the connecting pipe 300 to the baffle 200, and then install the baffle 200 with the connecting pipe 300 to the cylinder 100. This step sequence reduces the difficulty of installing the baffle 200.

[0073] 7) Using a stamping process, a metal plate is stamped into an end cover 400, and the end cover 400 has one or two, or more than two assembly holes, and a second flange 410 is stamped at the assembly hole;

[0074] 8) After the connecting pipe 300 passes through the assembly hole on the end cover 400, the end cover 400 and the opening of the cylinder 100 are welded into shape using carbon dioxide shielded arc welding, argon arc welding or other melting welding processes.

[0075] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A liquid storage device, characterized in that: include: Cylinder (100); a baffle (200), the baffle (200) being located inside the cylinder (100), the edge of the baffle (200) being connected to the inner wall of the cylinder (100), the baffle (200) being provided with a mounting hole, and a first flange (210) being provided along the outer peripheral edge of the mounting hole; A connecting pipe (300), the connecting pipe (300) penetrates into the cylinder (100) and passes through the mounting hole, the connecting pipe (300) is interference-connected with the baffle (200) at the mounting hole, a fastening structure (310) is provided along the circumference of the outer wall of the connecting pipe (300), the first flange (210) is sleeved on the outer circumference of the fastening structure (310), and the fastening structure (310) is used to increase the friction between the first flange (210) and the outer wall of the connecting pipe (300).

2. The liquid storage device according to claim 1, characterized in that: The dimension of the fastening structure (310) in the axial direction of the connecting tube (300) is greater than the dimension of the first flange (210) in the axial direction of the connecting tube (300).

3. The liquid storage device according to claim 1, characterized in that: The fastening structure (310) is a plurality of protruding points, or a plurality of protruding ribs arranged along the axial direction of the connecting pipe (300).

4. The liquid reservoir according to claim 1, characterized in that The fastening structure is processed by a rotary engraving process.

5. The liquid storage device according to claim 1, characterized in that: The extension direction of the first flange (210) is the same as the insertion direction of the connecting pipe (300).

6. The liquid reservoir according to claim 1, characterized in that The liquid storage device further comprises an end cover (400), the first end of the cylinder (100) has an opening, the end cover (400) is connected to the opening of the cylinder (100), an assembly hole is provided on the end cover (400), and the connecting pipe (300) passes through the assembly hole and the installation hole in sequence.

7. The liquid reservoir according to claim 6, characterized in that The liquid storage device further comprises a filter screen (500), the edge of the filter screen (500) being connected to the inner wall of the cylinder (100), and the connecting pipe (300) is penetrated in sequence by the assembly hole, the installation hole and the filter screen (500).

8. The liquid reservoir according to claim 7, characterized in that A second groove is provided along the circumference of the inner wall of the cylinder (100), and the edge of the filter screen (500) is inserted into the second groove.

9. The liquid storage device according to any one of claims 1 to 8, characterized in that: A first groove is provided along the circumference of the inner wall of the cylinder (100), and the edge of the baffle (200) is inserted into the first groove.

10. A method for manufacturing a liquid reservoir, used for manufacturing the liquid reservoir according to any one of claims 1 to 9, characterized in that: The manufacturing method of the liquid reservoir comprises: S1. Using a stamping process, a first flange (210) is stamped along the outer peripheral edge of the mounting hole of the baffle (200); using a rotary engraving process, a fastening structure (310) is rotary engraved along the circumference of the outer wall of the connecting pipe (300); S2. Install the connecting pipe (300) to the baffle (200) by interference fit.

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