A liquid storage device production process and compressor for improving yield rate

Abstract

The present invention relates to the technical field of air-conditioning equipment production and processing, and specifically to a liquid storage device production process and compressor for improving the yield rate. A liquid storage device production process for improving the yield rate comprises the following steps: S1, welding the lower cover to the cylinder; S2, first pressing the separation plate into the cylinder, and at the same time passing one side of the straight pipe portion through the lower cover and the first through hole of the separation plate in sequence, and then pressing the filter screen into the cylinder; S3, carving two circles of grooves on the inner wall of the cylinder at positions corresponding to the upper and lower sides of the separation plate; S4, carving a circle of grooves on the inner wall of the cylinder at a position corresponding to the bottom of the filter screen; S5, welding the upper cover to the cylinder; S6, carving a circle of grooves on the inner wall of the cylinder at a position corresponding to the top of the filter screen; S7, passing the air intake pipe through the second through hole of the upper cover, and welding the two together. The present invention solves the problem that the existing liquid storage device production process is prone to produce defective products.

Description

Technical Field

[0001] The present invention relates to the technical field of air-conditioning equipment production and processing, and in particular to a liquid storage device production process and a compressor for improving the yield rate. Background Art

[0002] As an important component in the air conditioning system, the liquid accumulator is suitable for the suction end of the compressor. Its function is to absorb the refrigerant that has passed through the air conditioning refrigeration cycle, filter it, and then transport it to the compression chamber of the compressor for the next round of refrigeration cycle. Due to the refrigeration cycle, a small amount of refrigeration oil and impurities are mixed into the refrigerant. In addition, affected by the surrounding low temperature environment, the refrigerant condenses into small droplets. Through the liquid accumulator, impurities are filtered, and the oil droplets and refrigerant droplets are atomized and enter the refrigeration cycle again to prevent impurities from entering the compressor and causing the compressor and compressed liquid to be stuck.

[0003] The existing liquid storage device includes a cylinder, an upper cover, a lower cover, an air inlet pipe, an exhaust pipe, a separation plate, a filter screen and other components. The separation plate, the filter screen and the cylinder need to be pressed and grooved during assembly to ensure that the separation plate and the filter screen are firmly connected to the cylinder. In the existing production process of the liquid storage device, after the separation plate and the filter screen are pressed into the cylinder, four grooves are carved on the cylinder to fix the separation plate and the filter screen (for details, please refer to the Chinese invention patent with publication number CN114193099A). When the top groove is pressed, the top of the cylinder will be deformed to a certain extent, which will cause a matching deviation between the cylinder and the upper cover, resulting in insufficient welding strength and easy splashing of waste chips into the cylinder.

[0004] Therefore, it is necessary to provide a technical solution to solve the above problems. Summary of the invention

[0005] The present invention provides a liquid storage device production process and a compressor with improved yield rate, aiming to solve the problem that the liquid storage devices produced by the existing liquid storage device production process are prone to defective products.

[0006] To achieve the above-mentioned object, the present invention provides a production process of a liquid reservoir with improved yield, wherein: the liquid reservoir comprises a cylinder, an upper cover, a lower cover, an air inlet pipe, an air exhaust pipe, a separation plate and a filter screen, the outer diameters of the separation plate and the filter screen are equal to the inner diameter of the cylinder, the lower cover and the separation plate have a first through hole for the exhaust pipe to pass through, and the upper cover has a second through hole for the air inlet pipe to pass through; the production process comprises the following steps:

[0007] S1, installing the lower cover on one end of the cylinder, placing the two on a resistance welding device, connecting current to generate resistance heat at the contact surface between the lower cover and the cylinder to weld the two;

[0008] S2, first press the separation plate into the cylinder, and at the same time pass the straight pipe portion of the exhaust pipe through the lower cover and the first through hole of the separation plate in sequence, and then press the filter into the cylinder;

[0009] S3, carving two circular grooves on the cylinder along the circumference of the cylinder, so that the inner wall of the cylinder forms first limiting convex rings on the upper and lower sides corresponding to the separation plate respectively;

[0010] S4, carving a circle of grooves on the cylinder along the circumference of the cylinder, so that a circle of second limiting convex rings is formed on the inner wall of the cylinder below the corresponding filter screen;

[0011] S5, installing the upper cover on the other end of the cylinder, placing the two on a resistance welding device, and connecting current to generate resistance heat at the contact surface between the upper cover and the cylinder to weld the two;

[0012] S6, carving a circle of grooves on the cylinder along the circumference of the cylinder, so that the inner wall of the cylinder forms another circle of second limiting convex ring above the corresponding filter screen;

[0013] S7, passing the air inlet pipe through the second through hole of the upper cover, and welding the two together.

[0014] More specifically, before step S1, the cylinder is obtained by laser cutting, and hot-melt portions are left at both ends of the cylinder.

[0015] More specifically, the upper cover and the lower cover are both provided with an annular positioning groove at one end close to the cylinder, and the inner side of the annular positioning groove forms a gear position; the two ends of the cylinder are respectively placed in the two annular positioning grooves.

[0016] More specifically, the depth of the annular positioning groove is 0.5 mm-2 mm.

[0017] More specifically, in step S3, a double-line notching wheel is used to notch the cylinder.

[0018] More specifically, in both step S4 and step S6, a single-line notching wheel is used to notch the cylinder.

[0019] More specifically, in step S2, the separation plate is interference fit with the straight pipe portion of the exhaust pipe.

[0020] More specifically, the exhaust pipe includes a steel straight pipe and a copper bent pipe. In step S2, after the separation plate is pressed into the cylinder, the steel straight pipe is passed through the lower cover and the first through hole of the separation plate in sequence, and then the copper bent pipe is assembled with the steel straight pipe, and the copper bent pipe, the steel straight pipe and the lower cover are welded and fixed.

[0021] More specifically, after step S7 is completed, the liquid reservoir is subjected to a water test to detect its air tightness.

[0022] A compressor comprises a liquid reservoir produced by any of the above-mentioned liquid reservoir production processes for improving yield.

[0023] The technical effects of the liquid storage device production process and compressor for improving the yield rate involved in the present invention are as follows:

[0024] The present application improves the grooving step in the production process. When the filter screen is pressed into the cylinder, a circle of second limiting convex rings is first carved at the position of the cylinder below the filter screen to limit the bottom of the filter screen and prevent the filter screen from sliding down. Due to the support of the filter screen, the cylinder is not easy to deform during the processing of the second limiting convex ring. Then the upper cover and the cylinder are directly assembled and welded. Finally, another circle of second limiting convex rings is carved at the position of the cylinder above the filter screen to limit the upward position of the filter screen. With the design of the present application, since the cylinder has not yet carved the second second limiting convex ring when the upper cover and the cylinder are welded, the cylinder itself does not deform, and thus has good centering, stable welding, high welding quality, and high fitting accuracy between the upper cover and the cylinder, which can effectively prevent the waste generated during the welding process from splashing into the cylinder, thereby improving the yield rate of the output liquid storage device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the liquid storage device involved in the present invention;

[0026] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0027] Figure 3 for Figure 1 The enlarged schematic diagram of point B in the middle;

[0028] Figure 4 It is a structural schematic diagram of the double-line groove wheel involved in the present invention;

[0029] Figure 5 It is a schematic structural diagram of the single-line groove wheel involved in the present invention.

[0030] Markings in the figure:

[0031] 1—cylinder body; 11—first limiting convex ring; 12—second limiting convex ring; 2—upper cover; 21—annular positioning groove; 22—gear position; 3—lower cover; 4—intake pipe; 5—exhaust pipe; 51—steel straight pipe; 52—copper bent pipe; 6—separation plate; 61—connecting ring; 7—filter screen; 8—double-line groove wheel; 81—annular protrusion; 9—single-line groove wheel. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] It should be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be a central element at the same time; when an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] In the description of the embodiments of the present invention, it should be understood that the directions or positional relationships indicated by “up”, “down”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside”, etc., are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0036] In order to more clearly illustrate the technical solution of the present invention, a preferred embodiment is provided below. Figure 1 to Figure 5 A production process for a liquid storage device with improved yield, wherein: the liquid storage device comprises a cylinder 1, an upper cover 2, a lower cover 3, an air inlet pipe 4, an exhaust pipe 5, a separation plate 6 and a filter screen 7, the outer diameters of the separation plate 6 and the filter screen 7 are equal to the inner diameter of the cylinder 1, the lower cover 3 and the separation plate 6 have a first through hole for the exhaust pipe 5 to pass through, and the upper cover 2 has a second through hole for the air inlet pipe 4 to pass through; the production process comprises the following steps:

[0037] S1, installing the lower cover 3 on one end of the cylinder 1, and welding the two together;

[0038] S2, first press the separation plate 6 into the cylinder 1, and at the same time, pass the straight pipe portion of the exhaust pipe 5 through the lower cover 3 and the first through hole of the separation plate 6 in sequence, and then press the filter screen 7 into the cylinder 1;

[0039] S3, carving two circular grooves on the cylinder 1 along the circumference of the cylinder 1, so that the inner wall of the cylinder 1 forms first limiting convex rings 11 on the upper and lower sides corresponding to the separation plate 6;

[0040] S4, carving a circle of grooves on the cylinder 1 along the circumference of the cylinder 1, so that the inner wall of the cylinder 1 forms a circle of second limiting convex rings 12 below the corresponding filter screen 7;

[0041] S5, installing the upper cover 2 on the other end of the cylinder 1, and welding the two together;

[0042] S6, carving a circle of grooves on the cylinder 1 along the circumference of the cylinder 1, so that the inner wall of the cylinder 1 forms another circle of second limiting convex rings 12 above the corresponding filter screen 7;

[0043] S7, passing the air inlet pipe 4 through the second through hole of the upper cover 2, and welding the two together.

[0044] Compared with the traditional technology, the production process of a liquid storage device with improved yield rate involved in the present invention has improved the grooving step. After the filter screen 7 is pressed into the cylinder 1, a circle of second limiting convex ring 12 is first carved at the position of the cylinder 1 below the filter screen 7 to limit the bottom of the filter screen 7 and prevent the filter screen 7 from sliding down. Due to the support of the filter screen 7, the cylinder 1 is not easy to deform during the processing of the second limiting convex ring 12. Then the upper cover 2 and the cylinder 1 are directly assembled and welded. Finally, another circle of second limiting convex ring 12 is carved at the position of the cylinder 1 above the filter screen 7 to limit the upward position of the filter screen 7. With the design of the present application, when the upper cover 2 is welded to the cylinder body 1, the cylinder body 1 has not yet engraved the second circle of the second limiting convex ring 12, so the cylinder body 1 itself does not deform, and thus has good alignment, stable welding, high welding quality, and high adaptation accuracy between the upper cover 2 and the cylinder body 1, which can effectively prevent waste chips generated during the welding process from splashing into the cylinder body 1, thereby improving the yield rate of the produced liquid storage device.

[0045] Before step S1, the cylinder 1 is obtained by laser cutting, and hot-melt portions are left at both ends of the cylinder 1.

[0046] Preferably, in step S3, a double-line groove wheel 8 is used to groove the cylinder 1. Specifically, the separation plate 6 is provided with a connecting ring 61 formed by a 90-degree bend, and the double-line groove wheel 8 is provided with two annular protrusions 81, and the distance between the two annular protrusions 81 is the same as the width of the connecting ring 61.

[0047] Preferably, in both step S4 and step S6, a single-line notching wheel 9 is used to notch the cylinder 1.

[0048] As a preferred solution of this embodiment, in step S1, the lower cover 3 and the cylinder body 1 are welded by resistance welding. Specifically, the two are placed on a resistance welding device, and current is connected to generate resistance heat at the contact surface between the lower cover 3 and the cylinder body 1 to weld the two.

[0049] Preferably, in step S5, the upper cover 2 and the cylinder body 1 are welded by resistance welding, and the specific welding process is the same as the welding process of the lower cover 3 and the cylinder body 1.

[0050] As a preferred solution of this embodiment, the cylinder 1 is cut from a tube by a laser cutting machine. The laser cutting process can ensure that the cross section of the cylinder 1 is smooth, which is beneficial to ensuring the subsequent welding yield.

[0051] Furthermore, the laser-cut barrel 1 is fed into a chamfering machine. The chamfering blade of the chamfering machine is a conical structure, and its conical tip is aligned with the inner and outer walls of the two ends of the barrel 1 for chamfering, so that a hot melt portion with a gradually increasing thickness from the end to the middle is formed at both ends of the barrel 1. The formation of the hot melt portion reduces the contact area between the barrel 1 and the upper cover 2 or the lower cover 3 at the welding position. Since resistance welding is mainly a method of heating the workpiece to a molten or plastic state through the resistance heat effect generated by the current flowing through the contact surface and the adjacent area of ​​the workpiece to form a metal bond, according to the heat formula Q=I 2 Rt, under the condition of constant current and time, according to R=ρL / S, it can be known that the resistance value is inversely proportional to the contact area. The smaller the contact area, the greater the resistance, and thus the more resistance heat is generated, so that the welding efficiency is improved and the energy consumption can be reduced. And the burrs generated at both ends of the cylinder 1 due to laser cutting can be removed by chamfering.

[0052] As a preferred solution of this embodiment, the upper cover 2 and the lower cover 3 are both provided with an annular positioning groove 21 at one end close to the cylinder 1, and the inner side of the annular positioning groove 21 forms a stop 22; the two ends of the cylinder 1 are respectively placed in the two annular positioning grooves 21 (corresponding to the annular positioning grooves 21). Specifically, the setting of the stop 22 can block the spatter and waste generated during the welding process, and prevent the waste from entering the interior of the cylinder 1.

[0053] Preferably, the depth of the annular positioning groove 21 is 0.5 mm-2 mm. It should be noted that if the depth of the annular positioning groove 21 is too small, the stop 22 cannot play a good blocking role, and if the depth of the annular positioning groove 21 is too large, the stop 22 affects the welding of the filter screen 7.

[0054] As a preferred solution of this embodiment, in step S2, the separation plate 6 and the straight pipe portion of the exhaust pipe 5 are interference fit. Specifically, a plurality of convex points arranged in a circumferential array are provided in the first through hole of the separation plate 6, and the exhaust pipe 5 is in close contact with the convex points, so as to achieve interference fit between the separation plate 6 and the exhaust pipe 5. In step S2, the press-fitting sequence of the separation plate 6, the filter screen 7 and the exhaust pipe 5 is that the separation plate 6 is first pressed into the interior of the cylinder 1 by the press-fitting device, and then the straight pipe portion of the exhaust pipe 5 is pressed into the lower cover 3 and the first through hole of the separation plate 6, and finally the filter screen 7 is pressed into. In this way, when the straight pipe portion of the exhaust pipe 5 is pressed to pass through the separation plate 6, the separation plate 6 can be supported by the press-fitting device to prevent the separation plate 6 from being pushed during the press-fitting process of the exhaust pipe 5, thereby ensuring the connection stability between the separation plate 6 and the cylinder 1 and between the exhaust pipe 5 and the separation plate 6, and improving the quality of the output liquid storage device.

[0055] As a preferred solution of this embodiment, the exhaust pipe 5 includes a steel straight pipe 51 and a copper curved pipe 52. In step S2, after the separation plate 6 is pressed into the cylinder 1, the steel straight pipe 51 is passed through the lower cover 3 and the first through hole of the separation plate 6 in sequence, and then the copper curved pipe 52 is assembled with the steel straight pipe 51, and the copper curved pipe 52, the steel straight pipe 51 and the lower cover 3 are welded and fixed. It should be noted that in order to ensure the stable connection between the liquid reservoir and the compressor, the connecting end of the liquid reservoir and the compressor needs to be made of copper, and the traditional exhaust pipe 5 is made of copper as a whole, resulting in a high production cost. Therefore, in this embodiment, the straight pipe part of the exhaust pipe 5 located inside the cylinder 1 is replaced by steel. In this way, the stable connection between the liquid reservoir and the compressor is ensured, and the production cost of the exhaust pipe 5 is reduced.

[0056] Furthermore, the copper curved tube 52, the steel straight tube 51 and the lower cover 3 are fixed by flame brazing. The welding process is as follows: first, the connection between the steel straight tube 51 and the cylinder 1 is preheated for 12s-16s by a flame welding gun, and then the copper curved tube 52 is inserted into the steel straight tube 51 and filled with solder. At the same time, the connection between the copper curved tube 52, the steel straight tube 51 and the lower cover 3 is heated and welded for 12s-16s by a flame welding gun. It should be noted that, refer to Figure 1Due to the limitation of the liquid reservoir structure, if the liquid reservoir is directly heated and welded, the flame welding gun can only directly heat the top of the copper elbow 52 and the steel straight pipe 51, and the heat transfer efficiency of the steel straight pipe 51 is low during the process. In order to ensure that the solder is completely melted and infiltrated, the steel straight pipe 51 needs to be heated for a long time. However, when the flame heating time is too long, the temperature at the copper elbow 52 is too high, which can easily cause the crystal grain size of the copper elbow 52 to change, thereby causing the copper elbow 52 to become brittle and easy to break, thereby shortening its service life. Therefore, in this embodiment, the steel straight tube 51 is preheated before heating and welding, so that a temperature difference is generated between the steel straight tube 51 and the copper bent tube 52. When the copper bent tube 52 is lowered into the steel straight tube 51 and heated and welded, the steel straight tube 51 can quickly transfer heat downward, so that the position where the steel straight tube 51 contacts the solder quickly reaches the required temperature, thereby avoiding the copper bent tube 52 from becoming brittle due to excessive temperature.

[0057] As a preferred solution of this embodiment, the air inlet pipe 4 is made of steel and is welded to the upper cover 2 by flame brazing.

[0058] Furthermore, the above-mentioned flame brazing welding process is: firstly, the air intake pipe 4 is lifted up to a certain height, and then the flame welding gun is aimed at the air intake pipe 4 for 12s-16s of preheating, and then the air intake pipe 4 is lowered and reset, and solder is filled, and at the same time, the flame welding gun is used to heat and weld the connection between the air intake pipe 4 and the upper cover 2 for 12s-16s. It should be noted that, refer to Figure 1 Due to the limitation of the liquid reservoir structure, the flame welding gun can only heat the portion of the air inlet pipe 4 exposed outside the upper cover 2, so that the heat is transferred to the portion of the air inlet pipe 4 in contact with the upper cover 2, so that the solder can completely penetrate and improve the welding quality. However, there is heat loss in the process. Therefore, during the processing, the heat of the portion of the air inlet pipe 4 exposed outside the upper cover 2 is much greater than the heat of the portion of the air inlet pipe 4 in contact with the upper cover 2. As a result, the portion of the air inlet pipe 4 exposed outside the upper cover 2 is prone to oxidation due to excessively high temperature, making the connection between the paint and the air inlet pipe 4 loose during painting. Therefore, in this embodiment, before heating and welding, the air intake pipe 4 is first lifted upward to expose the portion of the air intake pipe 4 that was originally in contact with the upper cover 2, and the flame welding gun is used to preheat the portion to generate a temperature difference between the upper and lower sides of the air intake pipe 4. When the air intake pipe 4 is lowered and reset, the flame welding gun heats the portion of the air intake pipe 4 exposed outside the upper cover 2, and the portion of the air intake pipe 4 that is in contact with the upper cover 2 is rapidly heated to melt the solder and seep downward. In this way, it can effectively prevent the portion of the air intake pipe 4 exposed outside the upper cover 2 from being heated for too long and oxidized.

[0059] In this embodiment, the welding of the exhaust pipe 5 and the lower cover 3 and the welding of the intake pipe 4 and the upper cover 2 are both performed on a flame brazing machine. The flame brazing machine is provided with a clamping and lifting mechanism, a first welding gun and a second welding gun. During the welding process, the clamping and lifting mechanism is used to clamp the intake pipe 4 / exhaust pipe 5. Specifically, the intake pipe 4 / exhaust pipe 5 is first installed on the clamping and lifting mechanism manually. When the intake pipe 4 / exhaust pipe 5 is transported to the position corresponding to the first welding gun, the clamping and lifting mechanism drives the intake pipe 4 / exhaust pipe 5 to rise, and the first welding gun performs preheating. After the preheating is completed, the clamping and lifting mechanism drives the intake pipe 4 / exhaust pipe 5 downward, and the second welding gun performs heating and welding. The other structures of the flame brazing machine are the same as those in the prior art, so they are not described here.

[0060] As a preferred solution of this embodiment, after step S7 is completed, the liquid reservoir is subjected to a water test to detect its air tightness.

[0061] A compressor comprises a liquid reservoir produced by any of the above-mentioned liquid reservoir production processes for improving yield.

[0062] The invention relates to a liquid storage device production process and a compressor for improving the yield rate, which solves the problem that the liquid storage devices produced by the existing liquid storage device production process are prone to defective products through reasonable structural settings.

[0063] The above description is only a preferred embodiment of the present invention, and its structure is not limited to the shapes listed above. 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 present invention.

Claims

1. A liquid storage device production process for improving the yield rate, in: The liquid storage device comprises a cylinder, an upper cover, a lower cover, an air inlet pipe, an air exhaust pipe, a separation plate and a filter screen, wherein the outer diameters of the separation plate and the filter screen are equal to the inner diameter of the cylinder, the lower cover and the separation plate have a first through hole for the air exhaust pipe to pass through, and the upper cover has a second through hole for the air inlet pipe to pass through; characterized in that the production process comprises the following steps: S1, installing the lower cover on one end of the cylinder, and welding the two together; S2, first press the separation plate into the cylinder, then pass the straight pipe portion of the exhaust pipe through the lower cover and the first through hole of the separation plate in sequence, and then press the filter into the cylinder; S3, carving two circular grooves on the cylinder along the circumference of the cylinder, so that the inner wall of the cylinder forms first limiting convex rings on the upper and lower sides corresponding to the separation plate respectively; S4, carving a circle of grooves on the cylinder along the circumference of the cylinder, so that a circle of second limiting convex rings is formed on the inner wall of the cylinder below the corresponding filter screen; S5, installing the upper cover on the other end of the cylinder, and welding the two together; S6, carving a circle of grooves on the cylinder along the circumference of the cylinder, so that the inner wall of the cylinder forms another circle of second limiting convex ring above the corresponding filter screen; S7, passing the air inlet pipe through the second through hole of the upper cover, and welding the two together.

2. A liquid storage device production process for improving the yield rate according to claim 1, Features: Before step S1, the cylinder is obtained by laser cutting, and hot-melt portions are left at both ends of the cylinder.

3. A liquid storage device production process for improving the yield rate according to claim 2, Features: The upper cover and the lower cover are both provided with an annular positioning groove at one end close to the cylinder, and the inner side of the annular positioning groove forms a gear position; the two ends of the cylinder are respectively placed in the two annular positioning grooves.

4. A liquid storage device production process for improving the yield rate according to claim 3, Features: The depth of the annular positioning groove is 0.5mm-2mm.

5. A liquid storage device production process for improving the yield rate according to claim 1, Features: In step S3, a double-line groove wheel is used to groove the cylinder.

6. A liquid storage device production process for improving the yield rate according to claim 1, Features: In both step S4 and step S6, a single-line notching wheel is used to notch the cylinder.

7. A liquid storage device production process for improving the yield rate according to claim 1, Features: In step S2, the separation plate is interference-fitted with the straight pipe portion of the exhaust pipe.

8. A liquid storage device production process for improving the yield rate according to claim 1, Features: The exhaust pipe includes a steel straight pipe and a copper bent pipe. In step S2, after the separation plate is pressed into the cylinder, the steel straight pipe is passed through the lower cover and the first through hole of the separation plate in sequence, and then the copper bent pipe is assembled with the steel straight pipe, and the copper bent pipe, the steel straight pipe and the lower cover are welded and fixed.

9. A liquid storage device production process for improving the yield rate according to claim 1, Features: After step S7 is completed, the liquid reservoir is subjected to a water test to detect its air tightness.

10. A compressor, Features: A liquid reservoir formed by the liquid reservoir production process for improving the yield rate as described in any one of claims 1-9.

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