Liquid storage device and air conditioning system

Abstract

The liquid storage device comprises a shell, a first pipe and a second pipe, the shell is provided with a containing cavity, the first pipe and the second pipe are communicated with each other, at least part of the first pipe is located in the containing cavity and connected to a port of the shell, the first pipe is communicated with the containing cavity, the second pipe is located outside the containing cavity, and the first pipe and the second pipe are communicated with each other. A first branch and a second branch are arranged at the end, away from the first pipe, of the second pipe and communicate with the compressor. According to the liquid storage device and the air conditioning system, the problems that the assembling process of the liquid storage device is complex and the assembling efficiency is low due to the fact that multiple welding point positions exist among multiple parts of the liquid storage device are solved.

Description

Technical Field

[0001] The present application relates to the field of liquid storage technology, and in particular to a liquid storage device and an air conditioning system thereof. Background Art

[0002] The liquid accumulator is an important component in the air conditioning system. It is usually installed between the evaporator and the compressor. The liquid accumulator includes an air inlet pipe, a shell, a connecting pipe and an air outlet pipe. The air inlet pipe is connected to the evaporator, the connecting pipe is connected to the air outlet pipe, and the air outlet pipe is connected to the inlet of the compressor. The refrigerant coming out of the evaporator enters the liquid accumulator through the air inlet pipe for gas-liquid separation. The liquid refrigerant is located at the bottom of the liquid accumulator, while the gaseous refrigerant enters the air outlet pipe through the connecting pipe, and then enters the compressor to prevent the liquid refrigerant from flowing into the compressor and causing liquid hammer.

[0003] When the compressor is a two-cylinder compressor with two cylinders, two independent pipes are usually welded in the liquid reservoir, and two air outlet pipes are respectively welded to the two pipes to form two "pipe-air outlet-cylinder" gaseous refrigerant passages. However, in the actual installation process, the shell and the two pipes need to be positioned and welded separately, and the two air outlet pipes need to be positioned and welded to the two pipes separately. In this way, there are many welding points between the multiple parts of the liquid reservoir, which makes the assembly process of the liquid reservoir more complicated and the assembly efficiency is low. Summary of the invention

[0004] Based on this, it is necessary to provide a liquid reservoir and an air conditioning system to solve the problem that there are many welding points between the multiple components of the liquid reservoir, resulting in a more complicated assembly process of the liquid reservoir and low assembly efficiency.

[0005] A liquid reservoir comprises: a shell having a accommodating cavity, a first tube and a second tube, the first tube and the second tube are connected to each other, the first tube is connected to the accommodating cavity, and at least part of the first tube is located in the accommodating cavity and connected to a port of the shell; the second tube is connected to the first tube and is arranged outside the accommodating cavity, and a first branch and a second branch are opened at one end of the second tube away from the first tube.

[0006] In one embodiment, a buffer cavity is provided at the junction of the first branch and the second branch, and the cross-sectional area of ​​the buffer cavity increases along the direction from the first tube to the second tube. It can be understood that such a configuration enables the refrigerant in the second tube to flow into the first branch and the second branch more evenly.

[0007] In one embodiment, the second tube includes a main tube section and a liquid separation head, the main tube section is arranged closer to the first tube than the liquid separation head, and the cross-sectional area of ​​the liquid separation head is larger than the cross-sectional area of ​​the main tube section; the first branch and the second branch are both arranged at the liquid separation head. It can be understood that such an arrangement facilitates the formation of a buffer chamber at the liquid separation head.

[0008] In one embodiment, the first branch and the second branch have openings at one end away from the main pipe section, and the first air outlet pipe and the second air outlet pipe are respectively inserted in the two openings. The compressor can understand that, in this configuration, the first air outlet pipe and the second air outlet pipe of required shape and length can be set according to the actual connection requirements of the compressor and the liquid accumulator.

[0009] In one of the embodiments, the liquid reservoir further includes a first air outlet pipe and a second air outlet pipe of a connecting cover plate, the connecting cover plate is sleeved on an end of the liquid dispensing head away from the main pipe section, and is connected to the liquid dispensing head; the connecting cover plate is provided with a first assembly hole connected to the first branch, the first air outlet pipe is inserted into the first assembly hole, and is welded to the connecting cover plate; the connecting cover plate is provided with a second assembly hole connected to the second branch, the second air outlet pipe is inserted into the second assembly hole, and is connected to the connecting cover plate. The first assembly hole is configured as a flanged hole extending toward the first branch; the second assembly hole is configured as a flanged hole extending toward the second branch. It can be understood that such a configuration can increase the welding area between the first air outlet pipe and the connecting cover plate, as well as the welding area between the second air outlet pipe and the connecting cover plate.

[0010] In one embodiment, the first tube and the second tube are integrally formed, and a positioning installation section is provided at the connection between the first tube and the main tube section, and the outer diameter of the positioning installation section is respectively larger than the outer diameter of the first tube and the outer diameter of the main tube section; the housing is provided with a mounting hole corresponding to the positioning installation section, and the positioning installation section is passed through the mounting hole and connected to the mounting hole. It can be understood that such a setting eliminates the welding point between the first tube and the second tube, which is conducive to simplifying the assembly process of the liquid reservoir.

[0011] In one embodiment, the port is configured as a mounting hole, the first tube is inserted into the mounting hole and connected to the mounting hole, the first tube is sleeved on the outer periphery of one end of the second tube and connected to the second tube. The first tube includes a first section and a second section, the second section is used to connect the second tube, the outer diameter of the second section is larger than the outer diameter of the first section, the mounting hole is provided with a flange structure extending toward the accommodating cavity corresponding to the second section, and the second section is connected to the flange structure. It can be understood that such a configuration is conducive to increasing the welding area between the first tube and the shell.

[0012] In one of the embodiments of the compressor point position, the liquid reservoir further includes a first air outlet pipe and a second air outlet pipe, the main pipe section, the liquid distributor, the first air outlet pipe and the second air outlet pipe are integrally formed, the end of the first air outlet pipe away from the main pipe section is bent toward one side of the main pipe section, the second air outlet pipe includes a straight pipe section and a curved pipe section, the straight pipe section extends along the axis direction of the main pipe section, and the curved pipe section is located at the end of the straight pipe section away from the first air outlet pipe, so that the first air outlet pipe and the curved pipe section are staggered along the axis direction of the main pipe section. The bending angle of the first air outlet pipe relative to the axis of the main pipe section is the same as the bending angle of the curved pipe section relative to the axis of the main pipe section. It can be understood that such a setting can avoid interference between the first branch pipe and the curved pipe section. And it is conducive to ensuring that the first branch pipe and the curved pipe section have similar impact resistance.

[0013] In one embodiment, a reflux hole is provided on the side wall of the first tube, and the reflux hole is connected to the accommodating chamber. There are multiple reflux holes, and the multiple reflux holes are arranged at intervals along the axial direction of the first tube, and the aperture of the reflux holes tends to decrease along the direction from the first tube to the second tube. It can be understood that such an arrangement allows the refrigerant oil in the accommodating chamber to flow back into the compressor.

[0014] The present application also provides an air-conditioning system, which includes a compressor and a liquid storage device as described in any one of the above embodiments, and the first branch and the second branch are respectively connected to the compressor.

[0015] Compared with the prior art, the liquid reservoir and air conditioning system provided by the present application, since the first tube is inside the accommodating cavity and the second tube is outside the accommodating cavity, that is, the gaseous refrigerant is divided outside the accommodating cavity, thereby forming two independent gaseous refrigerant passages of "first tube-first branch-one cylinder of the compressor" and "first tube-second branch-another cylinder of the compressor". Moreover, when assembling the liquid reservoir, it is only necessary to position and connect the first tube to the shell, which is beneficial to reduce the welding points between the parts of the liquid reservoir compared to the method of respectively loading two independent connecting tubes into the accommodating cavity and positioning and installing them on the shell. Moreover, arranging the first branch and the second branch outside the accommodating cavity can reduce the space occupied inside the accommodating cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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.

[0017] Figure 1 A cross-sectional view of a liquid reservoir according to an embodiment of the present application;

[0018] Figure 2 A cross-sectional view of a liquid reservoir according to another embodiment of the present application;

[0019] Figure 3 A cross-sectional view of a liquid reservoir according to another embodiment of the present application;

[0020] Figure 4 A cross-sectional view of a liquid reservoir according to another embodiment of the present application.

[0021] Figure numerals: 10, shell; 11, accommodating chamber; 12, mounting hole; 121, flanging structure; 13, upper end cover; 14, cylinder; 15, lower end cover; 20, first pipe; 21, first section; 22, second section; 23, reflux hole; 30, second pipe; 31, first branch; 32, second branch; 33, main pipe section; 331, buffer chamber; 34, liquid separation head; 371, straight pipe section; 372, curved pipe section; 40, first air outlet pipe; 50, second air outlet pipe; 60, connecting cover plate; 61, first assembly hole; 62, second assembly hole; 70, positioning and mounting section; 80, air inlet pipe; 90, filter screen. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of 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 violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0023] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0024] 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 at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0025] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0026] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art 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 related listed items.

[0027] See also Figure 1-Figure 4 In order to solve the problem that there are many welding points between the multiple parts of the liquid reservoir, which leads to a complicated assembly process and low assembly efficiency of the liquid reservoir, the present application provides a liquid reservoir, which includes: a shell 10, a first tube 20 and a second tube 30, the shell 10 has a receiving chamber 11, the first tube 20 and the second tube 30 are connected to each other, and at least part of the first tube 20 is located in the receiving chamber 11 and connected to the port of the shell 10, the first tube 20 is connected to the receiving chamber 11, the second tube 30 is located outside the receiving chamber 11, and the second tube 30 is opened at one end of the second tube 30 away from the first tube 20. The first branch 31 and the second branch 32 of the compressor are respectively connected to the cylinder of the compressor. Among them, the gaseous refrigerant in the receiving chamber 11 can enter the second tube 30 through the first tube 20, and then enter the cylinder of the compressor through the first branch 31 and the second branch 32.

[0028] In this way, since the first tube 20 is inside the accommodating cavity 11 and the second tube 30 is outside the accommodating cavity 11, that is, the gaseous refrigerant is split in the second tube 30, thereby splitting into two gaseous refrigerant passages, namely, "first tube 20-first branch 31-one cylinder of the compressor" and "first tube 20-second branch 32-another cylinder of the compressor". In addition, when assembling the liquid reservoir, it is only necessary to load the first tube 20 into the accommodating cavity 11 and position it to be connected to the shell port. Compared with the method of loading two independent connecting pipes into the accommodating cavity respectively and positioning them to the shell port, it is beneficial to reduce the welding points between the parts of the liquid reservoir. In addition, arranging the first branch 31 and the second branch 32 outside the accommodating cavity 11 can reduce the space occupied inside the accommodating cavity.

[0029] like Figure 1 As shown, the shell includes an upper end cover 13, a cylinder 14 and a lower end cover 15, the upper end cover 13 and the lower end cover 15 are respectively sleeved on the two ends of the cylinder 14, and the upper end cover 13, the lower end cover 15 and the cylinder 14 are surrounded to form a receiving chamber 11, and the liquid reservoir also includes an air intake pipe 80, which is inserted through the upper end cover 13 and extends into the receiving chamber 11. In order to reduce the cost of the liquid reservoir, the upper end cover 13, the cylinder 14 and the lower end cover 15 are all made of steel. Among them, the upper end cover 13, the cylinder 14 and the lower end cover 15 are welded by furnace welding, and the solder is copper. The air intake pipe 80 is a copper pipe, and the air intake pipe 80 and the upper end cover 13 are welded by flame welding, and the solder is brass. The liquid reservoir also includes a filter screen 90, which is arranged in the receiving chamber 11 and is used to filter impurities carried in the refrigerant entering the receiving chamber 11 from the air intake pipe 80.

[0030] A reflux hole 23 is formed on the side wall of the first tube 20 , and the reflux hole 23 is connected to the accommodating chamber 11 .

[0031] In order to ensure lubrication between the operating parts of the compressor, an appropriate amount of refrigerant oil is usually injected into the compressor. The refrigerant oil and the refrigerant have a certain miscibility, so that part of the refrigerant oil will circulate in the air-conditioning system with the refrigerant. By opening a reflux hole 23 on the side wall of the first tube 20, the gaseous refrigerant oil in the accommodating chamber 11 is deposited at the bottom of the liquid reservoir, and enters the first tube 20 through the reflux hole 23, and then flows back to the compressor through the first branch 31 or the second branch 32.

[0032] Furthermore, there are multiple reflux holes 23 , which are spaced apart along the axis of the first tube 20 , and the diameters of the reflux holes 23 tend to decrease along the direction from the first tube 20 to the second tube 30 .

[0033] This is conducive to the refrigeration oil fully entering the first tube 20. In addition, when part of the liquid refrigerant enters the outlet pipe through the return hole 23, it can be throttled through the return hole 23 with a smaller aperture and evaporated into gas for the second time to ensure that the refrigerant sucked into the compressor is gaseous.

[0034] There are three types of reservoir settings:

[0035] Embodiment 1:

[0036] like Figure 1As shown, the port is configured to be provided with a mounting hole 12, the outer side of one end of the first tube 20 is inserted into the mounting hole 12 and welded to the mounting hole 12, the first tube 20 is sleeved on the outer periphery of one end of the second tube 30, and welded to the second tube 30. The second tube 30 includes a main tube section 33 and a liquid distributor 34, the main tube section 33 is arranged closer to the first tube 20 than the liquid distributor 34, and the cross-sectional area of ​​the liquid distributor 34 is larger than the cross-sectional area of ​​the main tube section 33; the first branch 31 and the second branch 32 are both arranged at the liquid distributor 34. The liquid reservoir also includes a first air outlet pipe 40 and a second air outlet pipe 50, the first air outlet pipe 40 is connected to the liquid distributor 34, and the first branch 31 is connected to one cylinder of the compressor through the first air outlet pipe 40; the second air outlet pipe 50 is connected to the liquid distributor 34, and the second branch 32 is connected to another cylinder of the compressor through the second air outlet pipe 50.

[0037] The main pipe section 33 is used to connect the first pipe 20, and the liquid distributor 34 is used to distribute the gaseous refrigerant flowing into the main pipe section 33. By setting the cross-sectional area of ​​the liquid distributor 34 to be larger than the cross-sectional area of ​​the main pipe section 33, it is convenient to form the first branch 31 and the second branch 32 inside the liquid distributor. The first outlet pipe 40 and the second outlet pipe 50 of suitable shape and length can be manufactured according to the actual connection requirements of the liquid storage device and the compressor.

[0038] Furthermore, along the direction from the first tube 20 to the second tube 30, the cross-sectional area of ​​the liquid separator 34 tends to increase. In addition, the liquid separator 34 is provided with a buffer chamber 331 at the diversion point between the first branch 31 and the second branch 32, and along the direction from the first tube 20 to the second tube 30, the cross-sectional area of ​​the buffer chamber 331 tends to increase. Since the flow velocity of the fluid at the position with a large cross-sectional area is smaller than the flow velocity at the position with a small cross-sectional area when the fluid flows in the pipeline, when the gaseous refrigerant enters the buffer chamber 331 with a larger cross-sectional area from the main tube section 33 with a smaller cross-sectional area, its flow velocity will gradually decrease, which is conducive to more uniform diversion of the gaseous refrigerant at the connection point between the buffer chamber 331 and the first branch 31, and at the connection point between the buffer chamber 331 and the second branch 32.

[0039] Furthermore, the first air outlet pipe 40 and the second air outlet pipe 50 are respectively welded to the liquid dispensing head 34. There are two welding forms of the first air outlet pipe 40, the second air outlet pipe 50 and the liquid dispensing head 34.

[0040] Welding form 1:

[0041] like Figure 1 and Figure 2 As shown, the first air outlet pipe 40 is inserted into the open end of the first branch 31 away from the main section 33 and welded to the liquid distributor 34. The second air outlet pipe 50 is inserted into the open end of the second branch 32 away from the main section 33 and welded to the liquid distributor 34.

[0042] That is, the first air outlet pipe 40 and the second air outlet pipe are directly welded to the liquid dispensing head 34 .

[0043] Welding form 2:

[0044] like Figure 3 As shown, the liquid reservoir also includes a connecting cover plate 60, which is sleeved on the end of the liquid dispensing head 34 away from the main pipe section 33 and welded to the liquid dispensing head 34; the connecting cover plate 60 is provided with a first assembly hole 61 connected to the first branch 31, and the first air outlet pipe 40 is inserted in the first assembly hole 61 and welded to the connecting cover plate 60; the connecting cover plate 60 is provided with a second assembly hole 62 connected to the second branch 32, and the second air outlet pipe 50 is inserted in the second assembly hole 62 and welded to the connecting cover plate 60.

[0045] That is, the first air outlet pipe 40 and the second air outlet pipe 50 are welded to the liquid dispensing head 34 through the connecting cover plate 60. In this way, the internal space of the first branch 31 occupied by the first air outlet pipe 40 and the internal space of the second branch 32 occupied by the second air outlet pipe 50 can be reduced.

[0046] The first assembly hole 61 is configured as a flanged hole extending toward the first branch 31 ; the second assembly hole 62 is configured as a flanged hole extending toward the second branch 32 .

[0047] In this way, the welding area between the first air outlet pipe 40 and the connection cover plate 60 can be increased. In addition, the welding area between the second air outlet pipe 50 and the connection cover plate 60 can also be increased.

[0048] Furthermore, if Figure 1 As shown, the first tube 20 includes a first section 21 and a second section 22, the second section 22 is used to connect the second tube 30, the outer diameter of the second section 22 is larger than the outer diameter of the first section 21, the mounting hole 12 corresponds to the second section 22 and is provided with a flange structure 121 extending toward the accommodating cavity 11, and the second section 22 is welded to the flange structure 121.

[0049] The mounting hole 12 is opened in the lower end cover 15. Since the outer diameter of the second section 22 is larger than the outer diameter of the first section 21, an obvious step feature is formed at the connection between the second section 22 and the first section 21, so that when the first tube 20 and the lower end cover 15 are assembled, they are conveniently positioned through the second section 22 and the flange structure 121. In addition, the second section 22 is welded to the flange structure 121, which is conducive to increasing the welding area between the first tube 20 and the lower end cover 15.

[0050] Specifically, the first tube 20 is made of steel, and the first tube 20 is welded to the lower end cover 15 by furnace welding, and the solder is copper. The second tube 30 is a copper tube, and the second tube 30 is welded to the first tube 20 by flame welding, and the solder is brass. Alternatively, the above welding methods are all furnace welding, and the same solder is used.

[0051] Embodiment 2:

[0052] like Figure 2 and Figure 3 As shown, the difference between this embodiment and the first embodiment is that, in this embodiment, the first tube 20 and the second tube 30 are an integrally formed part, and a positioning installation section 70 is provided at the connection between the first tube 20 and the second tube 30, and the outer diameter of the positioning installation section 70 is larger than the outer diameter of the first tube 20 and the outer diameter of the main tube section 33; the shell 10 is provided with a mounting hole 12 corresponding to the positioning installation section 70, and the positioning installation section 70 is penetrated through the mounting hole 12 and welded to the mounting hole 12.

[0053] By providing the positioning installation section 70 , a distinct step feature is formed at the connection between the first tube 20 and the second tube 30 , so that when the first tube 20 , the second tube 30 and the lower end cover 15 are assembled, the positioning installation section 70 and the installation hole 12 are conveniently positioned and matched.

[0054] Specifically, the first tube 20 and the second tube 30 are made of steel, and the first tube 20 and the second tube 30 are welded to the lower end cover 15 by furnace welding, and the solder is red copper. Since the cost of steel is relatively low, the first tube 20 and the second tube 30 are provided as an integrally formed part made of steel, which is conducive to reducing the cost of the liquid reservoir, and the welding points of the first tube 20 and the second tube 30 are cancelled, which is conducive to further simplifying the assembly process of the liquid reservoir and improving the assembly efficiency of the liquid reservoir.

[0055] Embodiment three:

[0056] like Figure 4 As shown, the difference between this embodiment and embodiment one is that, in this embodiment, the main pipe section 33, the liquid separation head 34, the first air outlet pipe 40 and the second air outlet pipe 50 are made into an integrally formed part, one end of the first air outlet pipe 40 is connected to the main pipe section 33, and the other end can be connected to a cylinder of the compressor; one end of the second air outlet pipe 50 is connected to the main pipe section 33, and the other end can be connected to another cylinder of the compressor.

[0057] In this embodiment, the main pipe section 33, the first air outlet pipe 40 and the second air outlet pipe 50 are integrally formed of red copper. The main pipe section 33 and the first pipe 20 are welded by flame welding, and the solder is brass. The assembly process of the liquid storage device is as follows: first, the filter screen 90 is positioned and installed in the cylinder 14; then, the upper end cover 13 and the lower end cover 15 are positioned and sleeved at both ends of the cylinder 14 respectively; then, the air inlet pipe 80 is positioned and inserted into the port of the upper end cover 13, and the first pipe 20 is positioned and inserted into the port of the lower end cover 15; further, the above-mentioned structure formed by the assembly is furnace welded; finally, the second pipe 30 and the first pipe 20 are welded by flame welding.

[0058] In this way, by making the second tube 30 into an integrally formed part, the welding points between the components in the second tube 30 are eliminated, and the welding points between the components of the liquid reservoir are further reduced, which is conducive to further simplifying the assembly process of the liquid reservoir and improving the assembly efficiency of the liquid reservoir.

[0059] Furthermore, one end of the first air outlet pipe 40 away from the main pipe section 33 is bent toward one side of the main pipe section 33, and the second air outlet pipe 50 includes a straight pipe section 371 and a curved pipe section 372. The straight pipe section 371 extends along the axial direction of the main pipe section 33, and the curved pipe section 372 is located at one end of the straight pipe section 371 away from the first air outlet pipe 40, so that the first air outlet pipe 40 and the curved pipe section 372 are staggered along the axial direction of the main pipe section 33.

[0060] In this way, interference between the first air outlet pipe 40 and the curved pipe section 372 of the second air outlet pipe 50 can be avoided.

[0061] The bending angle of the first air outlet pipe 40 relative to the axis of the main pipe section 33 is the same as or approximately the same as the bending angle of the curved pipe section 372 relative to the axis of the main pipe section 33 .

[0062] Since the refrigerant will impact the first air outlet pipe 40 when entering the first air outlet pipe 40 from the main pipe section 33, similarly, the refrigerant will also impact the bent pipe section 372 when entering the bent pipe section 372 from the main pipe section 33. Therefore, by setting the bending angle of the first air outlet pipe 40 relative to the axis of the main pipe section 33 and the bending angle of the bent pipe section 372 relative to the axis of the main pipe section 33 to be the same or approximately the same, it can be ensured that the first air outlet pipe 40 and the bent pipe section 372 have similar impact resistance.

[0063] The present application also provides an air-conditioning system, which includes a compressor and a liquid reservoir as described in any one of the above embodiments, wherein the first branch 31 and the second branch 32 are respectively connected to the compressor so that the gaseous refrigerant in the liquid reservoir can flow into the two cylinders of the compressor through the first pipe 20 and the second pipe 30.

[0064] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, 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, they should be considered to be within the scope of this specification.

[0065] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A liquid storage device, characterized in that: The liquid reservoir comprises: A housing (10), wherein the housing (10) has a receiving chamber (11); a first tube (20), the first tube (20) being in communication with the accommodating cavity (11), and at least a portion of the first tube (20) being located in the accommodating cavity (11) and connected to a port of the housing (10); A second tube (30), the second tube (30) is connected to the first tube (20) and is arranged outside the accommodating chamber (11), and a first branch (31) and a second branch (32) are formed at one end of the second tube (30) away from the first tube (20).

2. The liquid storage device according to claim 1, characterized in that: A buffer cavity (331) is provided at the divergence point between the first branch (31) and the second branch (32), and the cross-sectional area of ​​the buffer cavity (331) tends to increase along the direction from the first tube (20) to the second tube (30).

3. The liquid storage device according to claim 1, characterized in that: The second tube (30) comprises a main tube section (33) and a liquid separation head (34); the main tube section (33) is arranged closer to the first tube (20) than the liquid separation head (34); the cross-sectional area of ​​the liquid separation head (34) is larger than the cross-sectional area of ​​the main tube section (33); and the first branch (31) and the second branch (32) are both arranged at the liquid separation head (34).

4. The liquid reservoir according to claim 3, characterized in that The first branch (31) and the second branch (32) have openings at one end away from the main pipe section (33), and a first air outlet pipe (40) and a second air outlet pipe (50) are inserted into the two openings respectively.

5. The liquid reservoir according to claim 3, characterized in that: The liquid storage device further comprises a connecting cover plate (60), a first air outlet pipe (40) and a second air outlet pipe (50); the connecting cover plate (60) is sleeved on an end of the liquid dispensing head (34) away from the main pipe section (33) and is connected to the liquid dispensing head (34); The connecting cover plate (60) is provided with a first assembly hole (61) communicating with the first branch (31); the first air outlet pipe (40) is inserted into the first assembly hole (61) and connected to the connecting cover plate (60); The connecting cover plate (60) is provided with a second assembly hole (62) communicating with the second branch (32); the second air outlet pipe (50) is inserted into the second assembly hole (62) and connected to the connecting cover plate (60); The first assembly hole (61) is configured as a flanged hole extending toward the first branch (31); and the second assembly hole (62) is configured as a flanged hole extending toward the second branch (32).

6. The liquid storage device according to claim 4 or 5, characterized in that: The first tube (20) and the second tube (30) are integrally formed parts, and a positioning installation section (70) is provided at the connection between the first tube (20) and the main tube section (33), and the outer diameter of the positioning installation section (70) is respectively larger than the outer diameter of the first tube (20) and the outer diameter of the main tube section (33); The housing (10) is provided with a mounting hole (12) corresponding to the positioning mounting section (70); the positioning mounting section (70) is passed through the mounting hole (12) and connected to the mounting hole (12).

7. The liquid reservoir according to claim 3, characterized in that The port is configured as a mounting hole (12), the first tube (20) is inserted into the mounting hole (12) and connected to the mounting hole (12), and the first tube (20) is sleeved on the outer periphery of one end of the second tube (30) and connected to the second tube (30); The first tube (20) comprises a first section (21) and a second section (22), the second section (22) being used to connect the second tube (30), the outer diameter of the second section (22) being greater than the outer diameter of the first section (21), the mounting hole (12) being provided with a flange structure (121) extending toward the accommodating cavity (11) corresponding to the second section (22), and the second section (22) being connected to the flange structure (121).

8. The liquid reservoir according to claim 7, characterized in that The liquid storage device further comprises a first air outlet pipe (40) and a second air outlet pipe (50); the main pipe section (33), the liquid dispensing head (34), the first air outlet pipe (40) and the second air outlet pipe (50) are integrally formed. One end of the first air outlet pipe (40) away from the main pipe section (33) is bent toward one side of the main pipe section (33); the second air outlet pipe (50) comprises a straight pipe section (371) and a curved pipe section (372); the straight pipe section (371) extends along the axial direction of the main pipe section (33); the curved pipe section (372) is located at one end of the straight pipe section (371) away from the first air outlet pipe (40), so that the first air outlet pipe (40) and the curved pipe section (372) are staggered along the axial direction of the main pipe section (33); Furthermore, the bending angle of the first air outlet pipe (40) relative to the axis of the main pipe section (33) is the same as the bending angle of the curved pipe section (372) relative to the axis of the main pipe section (33).

9. The liquid reservoir according to claim 1, characterized in that A reflux hole (23) is provided on the side wall of the first tube (20), and the reflux hole (23) is connected to the accommodating cavity (11); The number of the reflux holes (23) is multiple, and the multiple reflux holes (23) are arranged at intervals along the axial direction of the first tube (20), and the apertures of the reflux holes (23) tend to decrease along the direction from the first tube (20) to the second tube (30).

10. An air conditioning system, characterized in that: It comprises a compressor and a liquid accumulator according to any one of claims 1 to 9, wherein the first branch (31) and the second branch (32) are respectively connected to the compressor.

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