Liquid storage device

Abstract

The utility model relates to a liquid storage device, which comprises a middle barrel body, the upper end cover is connected with the upper end of the middle barrel body through laser welding, and a top punched hole is formed in the upper end cover; the lower end cover is connected with the lower end of the middle barrel body through laser welding, and a bottom punched hole is formed in the lower end cover; the filter screen and the partition plate are connected with the inner wall of the middle cylinder body through laser welding; the air inlet pipe is connected with the inner wall of the top punched hole of the upper end cover through laser welding; the inner pipe is connected with the inner wall of the bottom punched hole of the lower end cover through laser welding, and the inner pipe is provided with a bottom flaring; and the air outlet pipe is connected with the inner wall of the bottom flaring of the inner pipe through laser welding. Compared with the prior art, the utility model has the advantages of high production efficiency, low cost, environmental protection and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary compressors, and more particularly to a liquid receiver. Background Art

[0002] The liquid receiver is one of the core components of a rotary compressor. Its function is to separate gas and liquid of the refrigerant, and it is a pressure vessel. It includes a liquid receiver cylinder body, an intake pipe and an outlet pipe which are combined on the liquid receiver cylinder body and communicate with the inside of the liquid receiver cylinder body. At present, there are three structures of liquid receivers, namely, a stretching type, a three-section type and a spinning type. Among them, for the stretching type and three-section type liquid receivers, furnace brazing is usually required to connect the cylinder body with internal filter screens and partitions, and flame brazing is required to weld the intake pipe and the outlet pipe. Both welding methods require the use of copper welding wires, resulting in high material costs. Furnace brazing causes large environmental pollution and low energy utilization rate, and high processing costs. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a liquid receiver with laser welding.

[0004] The purpose of the utility model can be achieved by the following technical solutions: A liquid receiver, comprising:

[0005] A middle cylinder;

[0006] An upper end cover laser-welded to the upper end of the middle cylinder, and the upper end cover is provided with a top punching;

[0007] A lower end cover laser-welded to the lower end of the middle cylinder, and the lower end cover is provided with a bottom punching;

[0008] A filter screen and a partition laser-welded to the inner wall of the middle cylinder;

[0009] An intake pipe laser-welded to the inner wall of the top punching of the upper end cover;

[0010] An inner pipe laser-welded to the inner wall of the bottom punching of the lower end cover, and the inner pipe is provided with a bottom flaring;

[0011] An outlet pipe laser-welded to the inner wall of the bottom flaring of the inner pipe.

[0012] Preferably, the inner diameter of the middle cylinder is d1, the outer diameter is d2, and the outer diameter of the filter screen is d3, where d2>d3≥d1.

[0013] More preferably, d2>d3>d1.

[0014] Even more preferably, -0.4mm<d1-d3<0mm.

[0015] Preferably, the inner diameter of the middle cylinder is d1, the outer diameter is d2, the outer diameter of the partition is d4, and d2 > d4 ≥ d1.

[0016] More preferably, -0.4mm < d1 - d4 < 0mm.

[0017] Preferably, both the filter screen and the partition are provided with smooth outward flanges, and the flanges are fitted with the inner wall of the middle cylinder.

[0018] Preferably, the outer diameter of the middle cylinder is d2, the inner diameter of the upper end cap is d5, the inner diameter of the top punching is d8, and the outer diameter of the air inlet pipe is d 10 , d5 ≤ d2, d 10 ≤ d8.

[0019] More preferably, -0.6mm < d5 - d2 < 0mm.

[0020] Preferably, the inner diameter of the middle cylinder is d1, the outer diameter of the lower end cap is d6, the inner diameter of the bottom punching is d9, and the outer diameter of the bottom flaring is d7, d6 ≥ d1, d7 ≥ d9.

[0021] More preferably, -0.6mm < d6 - d1 < 0mm.

[0022] More preferably, the inner diameter of the bottom flaring is d 12 , the outer diameter of the air outlet pipe is d 11 , d 11 ≤ d 12 .

[0023] Preferably, a filter screen and a partition are assembled inside the middle cylinder by interference fit and fixedly connected by laser spot welding.

[0024] More preferably, the filter screen and the partition are respectively connected and fixed to the middle cylinder through more than 2 welding points.

[0025] Preferably, the outer wall of the bottom flaring and the inner wall of the bottom punching are fixedly connected by laser wire filling welding.

[0026] Preferably, the inner wall of the bottom flaring and the outer wall of the air outlet pipe are fixedly connected by laser wire filling welding.

[0027] Preferably, the inner wall of the top punching and the outer wall of the air inlet pipe are fixedly connected by laser wire filling welding.

[0028] Preferably, the welding wire used for the laser wire filling welding and the cylinder body structure are of the same material.

[0029] Preferably, the bottom flaring is a straight section, and an outward turning R corner is provided at the bottom.

[0030] Preferably, the middle cylinder, the upper end cover and the lower end cover form a cylinder structure, and the filter screen, the partition plate and the inner pipe are arranged inside the cylinder structure.

[0031] Further preferably, the inner pipe is vertically arranged inside the cylinder structure, the filter screen is arranged above the inner pipe, and the partition plate is horizontally arranged between the inner pipe and the middle cylinder.

[0032] Further preferably, the outer wall of the upper end of the middle cylinder is connected to the inner wall of the lower end of the upper end cover by laser welding.

[0033] Further preferably, the inner wall of the lower end of the middle cylinder is connected to the outer wall of the upper end of the lower end cover by laser welding.

[0034] Compared with the prior art, the utility model has the following beneficial effects:

[0035] 1. The liquid storage device of the utility model comprises a plurality of components connected by laser welding, without pre-filling copper welding wires at the connection parts, thus reducing the material cost.

[0036] 2. Through the design of the outer diameter and inner diameter relationships among the upper end cover, the lower end cover, the filter screen, the partition plate and the middle cylinder components of the utility model, the components can be tightly assembled, which is convenient for laser welding connection.

[0037] 3. Through the design of the bottom flaring of the inner pipe of the utility model, the turned-out edge of the inner pipe can be fitted with the lower surface of the lower end cover, which is convenient for laser welding connection.

[0038] 4. For the liquid storage device of the utility model, the whole is laser welded, the turned-up edges of the filter screen and the partition plate are smooth surfaces, and the flared part of the inner pipe is a straight line segment. There is no need to pre-fill brass welding wires at the connection parts, which can reduce the material cost.

[0039] 5. The liquid storage device of the utility model has lower production cost, less environmental pollution, fewer assembly processes and higher production efficiency.

[0040] 6. The liquid storage device of the utility model adopts laser welding, with concentrated energy points, no need for overall heating, uses clean energy, has high production efficiency, high energy utilization rate, low cost and is environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a schematic structural diagram of the liquid storage device of the utility model;

[0042] Figure 2 is a schematic structural diagram of the air inlet pipe of the utility model;

[0043] Figure 3 is a schematic structural diagram of the upper end cover of the utility model;

[0044] Figure 4It is a schematic structural diagram of the cylinder body in the present utility model;

[0045] Figure 5 It is a schematic structural diagram of the filter screen of the present utility model;

[0046] Figure 6 It is a schematic structural diagram of the partition plate of the present utility model;

[0047] Figure 7 It is a schematic structural diagram of the lower end cover of the present utility model;

[0048] Figure 8 It is a schematic structural diagram of the cylinder body in the present utility model;

[0049] Figure 9 It is a schematic structural diagram of the air outlet pipe of the present utility model;

[0050] In the figure: 1 - middle cylinder body, 2 - upper end cover, 21 - top punching, 3 - lower end cover, 31 - bottom punching, 4 - filter screen, 5 - partition plate, 6 - intake pipe, 7 - inner pipe, 71 - bottom flaring, 8 - air outlet pipe. Detailed implementation manners

[0051] The present utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present utility model, and the detailed implementation manners and specific operation processes are given, but the protection scope of the present utility model is not limited to the following embodiments.

[0052] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0053] Some implementation manners of the present utility model will be described in detail below in conjunction with the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0054] Embodiment 1

[0055] A liquid storage device includes a middle cylinder body 1, an upper end cover 2, a lower end cover 3, a filter screen 4, a partition plate 5, an intake pipe 6, an inner pipe 7 and an air outlet pipe 8.

[0056] Among them, the upper end of the middle cylinder body 1 is connected with the upper end cover 2 by laser welding, the lower end is connected with the lower end cover 3 by laser welding, and the inner wall is connected with the filter screen 4 and the partition plate 5 by laser welding. The upper end cover 2 is provided with a top punching 21, the inner wall of the top punching 21 is connected with the intake pipe 6 by laser welding, the lower end cover 3 is provided with a bottom punching 31, the inner wall of the bottom punching 31 is connected with the inner pipe 7 by laser welding, the inner pipe 7 is provided with a bottom flaring 71, and the inner wall of the bottom flaring 71 is connected with the air outlet pipe 8 by laser welding.

[0057] Example 2

[0058] A new - structure liquid reservoir, as Figure 1 shown, the liquid reservoir has components: an air inlet pipe 6, an air outlet pipe 8, a filter screen 4, a partition plate 5, an upper end - cover 2, a lower end - cover 3, an inner pipe 7, and a middle cylinder 1, and the whole is hermetically connected by laser welding.

[0059] Specifically, as Figure 4 shown, the inner diameter of the middle cylinder 1 is d1, and the outer diameter is d2. As Figure 5 shown, the outer diameter of the filter - screen 4 support is d3, and d2 > d3≥d1. As Figure 6 shown, the outer diameter of the partition plate 5 is d4, and d2 > d4≥d1. Both the filter screen 4 and the partition plate 5 are designed with outward - turned flanges, and the flanges are fitted to the inner wall of the middle cylinder 1. As Figure 3 shown, the inner diameter of the upper end - cover 2 is d5, and the inner diameter of the punched hole (top punched hole 21) is d8, and d5≤d2. As Figure 7 shown, the outer diameter of the lower end - cover 3 is d6, and the inner diameter of the punched hole (bottom punched hole 31) is d9, and d6≥d1. As Figure 8 shown, the inner pipe 7 is flared and has an outward - turned R - corner design at the end. The flared part is a straight section, and its (bottom flare 71) outer diameter is d7, and the inner diameter is d 12 , and d7≥d9. As Figure 2 shown, the outer diameter of the air inlet pipe 6 is d 10 , d 10 ≤d8. As Figure 9 shown, the outer diameter of the air outlet pipe 8 is d 11 , d 11 ≤d 12 .

[0060] Example 3

[0061] A manufacturing method of the new - structure liquid reservoir in Example 2. First, press the filter screen 4 and the partition plate 5 into the middle cylinder 1. Through interference fit, the flanges of the filter screen 4 and the partition plate 5 are closely attached to the inner wall of the middle cylinder 1, and then fix them by laser spot - welding. The number of spot - welds n is more than 2. Then, assemble the upper end - cover 2 and the lower end - cover 3 with the middle cylinder 1, and perform circumferential welding by laser wire - filling welding. Then, press the inner pipe 7 into the lower end - cover 3. The straight section of the flared part of the inner pipe 7 is tightly fitted to the punched hole of the lower end - cover 3, and use laser autogenous welding to weld and seal the inner pipe 7 and the lower end - cover 3. Then, insert the air inlet pipe 6 into the punched hole of the upper end - cover 2 and perform welding by laser wire - filling welding. Then, insert the air outlet pipe 8 into the flared part of the inner pipe 7 and perform welding by laser wire - filling welding. The welding wire and the cylinder are of the same material. The power of the laser welder is 1500W - 3000W, the wire - feeding speed is 12mm / s, and the welding time is 31s.

[0062] Comparative Example 1

[0063] A liquid reservoir and its manufacturing method. The structure consists of an intake pipe 6, an upper end cap 2, a filter screen 4, a partition plate 5, a middle cylinder 1, a lower end cap 3, an inner pipe 7, and an outlet pipe 8. The assembly method is as follows: First, groove the sides of the filter screen 4 and the partition plate 5, pre-install brass welding wires in the grooves, and then press them into the designated positions of the middle cylinder 1. Next, press-fit the upper and lower end caps with the middle cylinder 1, and pre-fill brass welding wires at the joints. Then, press-fit the inner pipe 7 with the lower end cap 3 and pre-fill brass welding wires. Then, send the assembled cylinder body into a high-temperature furnace and use the in-furnace welding process to weld between the components for a time between 1.5 and 2.5 hours. After the in-furnace welding is completed, install the intake pipe 6 for flame welding, and finally install the outlet pipe 8 for flame welding. Both the in-furnace welding and the flame welding use natural gas for heating, adopt the overall heating method, and require brass welding wires as welding materials. This structure and processing method are complex, have low efficiency, and high production costs.

[0064] The above description of the embodiments is to enable those of ordinary skill in the art to understand and use the utility model. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative efforts. Therefore, the present utility model is not limited to the above embodiments, and the improvements and modifications made by those skilled in the art without departing from the scope of the present utility model according to the disclosure of the present utility model should be within the protection scope of the present utility model.

Claims

1. A liquid reservoir, characterized in that, Comprising: A middle cylinder body (1); An upper end cover (2) laser welded to the upper end of the middle cylinder body (1), the upper end cover (2) being provided with a top punching (21); A lower end cover (3) laser welded to the lower end of the middle cylinder body (1), the lower end cover (3) being provided with a bottom punching (31); A filter screen (4) and a partition plate (5) laser welded to the inner wall of the middle cylinder body (1); An air inlet pipe (6) laser welded to the inner wall of the top punching (21) of the upper end cover (2); An inner pipe (7) laser welded to the inner wall of the bottom punching (31) of the lower end cover (3), the inner pipe (7) being provided with a bottom flared opening (71); An air outlet pipe (8) laser welded to the inner wall of the bottom flared opening (71) of the inner pipe (7).

2. The liquid storage container according to claim 1, wherein, The inner diameter of the middle cylinder body (1) is d1, the outer diameter is d2, the outer diameter of the filter screen (4) is d3, and d2 > d3 ≥ d1.

3. The liquid reservoir according to claim 1, characterized in that The inner diameter of the middle cylinder body (1) is d1, the outer diameter is d2, the outer diameter of the partition plate (5) is d4, and d2 > d4 ≥ d1.

4. The liquid storage device according to claim 1, characterized in that, Both the filter screen (4) and the partition plate (5) are provided with outward flanges, and the flanges are fitted to the inner wall of the middle cylinder body (1).

5. The liquid reservoir according to claim 1, wherein, The outer diameter of the middle cylinder body (1) is d2, the inner diameter of the upper end cover (2) is d5, the inner diameter of the top punching hole (21) is d8, and the outer diameter of the air inlet pipe (6) is d 10 , d5 ≤ d2, d 10 ≤ d8.

6. The liquid reservoir according to claim 1, characterized in that, The inner diameter of the middle cylinder body (1) is d1, the outer diameter of the lower end cover is d6, the inner diameter of the bottom punching (31) is d9, the outer diameter of the bottom flared opening (71) is d7, and d6 ≥ d1, d7 ≥ d9.

7. The liquid storage device according to claim 6, wherein, The inner diameter of the bottom flared opening (71) is d 12 , and the outer diameter of the air outlet pipe is d 11 , d 11 ≤ d 12 .

8. The liquid reservoir according to claim 1, characterized in that, The filter screen (4) and the partition plate (5) are assembled to the inner side of the middle cylinder body (1) by interference fit and fixedly connected by laser spot welding.

9. The liquid reservoir according to claim 1, characterized in that, The outer wall of the bottom flared opening (71) and the inner wall of the bottom punching (31), the inner wall of the bottom flared opening (71) and the outer wall of the air outlet pipe (8), and the inner wall of the top punching (21) and the outer wall of the air inlet pipe (6) are respectively fixedly connected by laser wire filling welding.

10. The liquid reservoir according to any one of claims 1 to 9, characterized in that, The middle cylinder body (1), the upper end cover (2) and the lower end cover (3) form a cylinder structure, and the filter screen (4), the partition plate (5) and the inner pipe (7) are arranged inside the cylinder structure.

Images