Liquid storage device

Abstract

The utility model aims at providing a liquid storage device which comprises a filtering and drying assembly, the filtering and drying assembly comprises a filtering cavity and a drying cavity, and a drying piece is located in the drying cavity and used for drying gas in a first shell; the accommodating cavity is communicated with the filter cavity through meshes of the filter screen to filter gas entering the pipe body; compared with the mode that the filter and the drying piece are separately fixed in the first shell, in the technical scheme, the filter screen and the second shell are fixedly connected or connected in a limiting mode, the second shell can contain the drying piece, the filtering and drying assembly integrates the filtering function and the drying function, the filter screen and the drying piece can be installed in the first shell together during assembling, and therefore the filtering and drying effects are improved. And moreover, the second shell is of an integrated structure, so that the number of parts during installation is reduced.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, specifically to a liquid storage device. Background Technology

[0002] The liquid storage device includes a gas-liquid separator and a liquid receiver. The gas-liquid separator is one of the important components of the air conditioning system. Its main function is to separate the gas and liquid refrigerant, so that the refrigerant entering the compressor is a gaseous refrigerant.

[0003] In such liquid storage devices, drying components such as molecular sieve bags are often used. The molecular sieve bags are usually fixed to the tube body by strapping. In order to reduce impurities in the refrigerant, a filter screen can be set in the tank to achieve the function of filtering the refrigerant. How to simplify the assembly has always been the focus of research for those skilled in the art. Utility Model Content

[0004] One objective of this application is to provide a liquid storage device that facilitates simplified assembly.

[0005] To achieve the above objectives, this application adopts the following technical solution: a liquid storage device, the liquid storage device comprising a first housing and a tube, the first housing having a receiving cavity, a portion of the tube being located within the receiving cavity, the tube having an inlet; the liquid storage device comprising a filtration and drying assembly, the filtration and drying assembly being located within the receiving cavity, the filtration and drying assembly being limited or fixedly connected to the tube; the filtration and drying assembly comprising a second housing, the second housing being an integral structure, the second housing having a drying cavity and a filtering cavity, the inlet being located within the filtering cavity, the filtration and drying assembly comprising a filter screen, the filter screen being fixedly or limitedly connected to the second housing, the receiving cavity communicating with the filtering cavity through the mesh of the filter screen; the filtration and drying assembly comprising a drying element, the drying element being located within the drying cavity.

[0006] In the technical solution of this application, the filter-drying assembly includes a filter chamber and a drying chamber. The drying element is located in the drying chamber and dries the gas in the first housing. The receiving chamber is connected to the filter chamber through the mesh of the filter screen to filter the gas entering the tube. Compared with fixing the filter and the drying element separately in the first housing, in this technical solution, the filter screen is fixedly connected or limited to the second housing, and the second housing can accommodate the drying element. This allows the filter-drying assembly to integrate the functions of filtering and drying. During assembly, the filter screen and the drying element can be installed together in the first housing, which simplifies assembly. Furthermore, the integrated structure of the second housing reduces the number of parts during installation. Attached Figure Description

[0007] Figure 1 An exploded view of an embodiment of a gas-liquid separator for a liquid storage device is shown;

[0008] Figure 2 It shows Figure 1 A cross-sectional view of the liquid storage device shown at one angle;

[0009] Figure 3 It shows Figure 2 A partially enlarged view of one embodiment of the liquid storage device shown;

[0010] Figure 4 It shows Figure 3 A three-dimensional structural diagram of the filter drying assembly shown.

[0011] Figure 5 It shows Figure 4 A cross-sectional structural schematic diagram of one embodiment of the filter drying assembly shown;

[0012] Figure 6 It shows Figure 4 A cross-sectional structural schematic diagram of one embodiment of the filter drying assembly shown;

[0013] Figure 7 It shows Figure 4 A three-dimensional structural schematic diagram of one embodiment of the filter drying assembly shown;

[0014] Figure 8 It shows Figure 4 A cross-sectional structural schematic diagram of one embodiment of the filter drying assembly shown;

[0015] Figure 9 It shows Figure 8 An exploded view of one embodiment of the filter drying assembly shown;

[0016] Figure 10 It shows Figure 8 A three-dimensional structural schematic diagram of one embodiment of the drying component and connector shown;

[0017] Figure 11 A cross-sectional structural schematic diagram of another embodiment of the liquid storage device is shown.

[0018] 100. Liquid storage device; 1. First shell; 2. Tube; 3. Filter and dry assembly; 4. Drying component; 5. Partition; 341. First through hole; 31. Drying chamber; 32. Filter chamber; 33. Filter screen; 35. Second shell; 351. First wall; 352. Second wall; 353. First end; 354. Second end; 355. First connecting hole; 356. Third through hole; 357. Fourth through hole; 36. Support component; 342. Second through hole; 361. Extension; 362. Fixing part; 37. Inner wall; 38. Support plate; 39. Connecting component; 391. First limiting part; 392. Second limiting part; 393. Connecting part; 41. Second connecting hole; 11. Receiving cavity; 21. Inlet; 22. Heat exchange tube; 23. Sleeve; 24. First flow channel; 6. Dispersing cup; 8. End cap; 81. Inlet. Detailed Implementation

[0019] The embodiments are described in detail below with reference to the accompanying drawings.

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. In this document, relational terms such as "first" and "second" are used merely to distinguish one component from another with the same name, and do not necessarily require or imply any such actual relationship or order between these components. It should be noted that "limiting connection" in this application includes abutment, hinge, snap-fit, etc., and "fixed connection" includes welding, bonding, riveting, vulcanization fixing, etc.

[0021] like Figure 1 and Figure 2As shown, in this embodiment, the liquid storage device 100 is a gas-liquid separator. The gas-liquid separator 100 is one of the important components of the automotive air conditioning system. Its main function is to store the refrigerant in the automotive air conditioning system and separate the gas and liquid phases of the refrigerant, so that the refrigerant entering the compressor is a gaseous refrigerant. The gas-liquid separator 100 includes a first housing 1 and a head 8. The first housing 1 is cylindrical. The head 8 and the first housing 1 are connected by a limiting connection or a fixed connection. Preferably, the head 8 and one end of the first housing 1 are fixed by welding. The first housing 1 has a receiving cavity 11. The gas-liquid separator 100 includes a liquid distribution cup 6, which is located on one side of the head 8. The head 8 includes an inlet 81. There is a gap between the liquid distribution cup 6 and the inlet 81 of the head 8. After the gas and liquid phase refrigerant enters the receiving cavity 11 from the tube 21 of the head 8, the refrigerant impacts the liquid distribution cup 6. The liquid refrigerant flows downward from the periphery of the liquid distribution cup 6, and the gaseous refrigerant is contained in the receiving cavity 11. The gas-liquid separator 100 includes a tube body 2, a portion of which is located in the receiving cavity 11. The tube body 2 includes an inlet 21, a heat exchange tube 22, and a sleeve 23. The heat exchange tube 22 is limited or fixedly connected to the end cap 8. The sleeve 23 is sleeved on the radially outer side of at least a portion of the heat exchange tube 22. A first flow channel 24 is provided between the heat exchange tube 22 and the sleeve 23. The first flow channel 24 has an opening at one end near the liquid distribution cup 6, which is the inlet 21. Gaseous refrigerant enters the interior of the tube body 2 from the inlet 21, and gaseous refrigerant is discharged from the outlet of the heat exchange tube 22 into the gas-liquid separator 100.

[0022] like Figure 11 As shown, in other embodiments, the liquid storage device 100 can also be a liquid reservoir. When the liquid storage device 100 is used as a liquid reservoir, the liquid reservoir includes a first housing 1 and a head 8. The first housing 1 and the head 8 are fixedly connected. The interior of the first housing 1 is a receiving cavity 11. At least a portion of the tube 2 is located in the receiving cavity 11. The inlet 21 of the tube 2 is close to the lower end of the first housing 1. The head 8 includes an inlet 81. The gas-liquid two-phase refrigerant enters the receiving cavity 11 from the inlet 81. The liquid accumulates at the lower end of the first housing 1 under the action of gravity. The liquid refrigerant can flow into the tube 2 from the inlet 21.

[0023] like Figure 2 and Figure 3As shown, in this embodiment, the liquid storage device 100 is a gas-liquid separator. The gas-liquid separator 100 includes a filter-drying assembly 3, which is located inside the receiving cavity 2. The filter-drying assembly 3 is limited or fixedly connected to the tube body 2. The filter-drying assembly 3 includes a second housing 35, which is an integral structure. The second housing 35 has a drying cavity 31 and a filter cavity 32. The inlet 21 is located in the filter cavity 32. The filter-drying assembly 3 includes a filter screen 33, which is fixedly or limitedly connected to the second housing 35. The receiving cavity 11 communicates with the filter cavity 32 through the first mesh 331 of the filter screen 33. The gas is filtered by the filter screen 33 before entering the inlet 21, which can reduce the amount of gaseous refrigerant in the filter. Impurities are removed, improving the filtration effect of the gas-liquid separator 100; the filter drying assembly 3 includes a drying element 4, which is located in the drying chamber 31. The drying element 4 can dry the gaseous refrigerant, which helps to reduce the amount of liquid refrigerant entering the pipe body 2; compared with fixing the filter and the drying element 4 separately in the first housing 1, in this technical solution, the filter screen 33 is fixedly connected or limited to the second housing 35, and the second housing 35 can accommodate the drying element 4, so that the filter drying assembly 3 integrates the functions of filtration and drying. During assembly, the filter screen 33 and the drying element 4 can be installed together in the first housing 1, which helps to simplify the assembly. In addition, the second housing 35 has an integral structure, reducing the number of parts during installation.

[0024] It is worth noting that the receiving cavity 11 and the drying cavity 31 and filter cavity 32 in the filter-drying assembly 3 are non-overlapping cavities. The receiving cavity 11 is used to store refrigerant and partially accommodate the internal components of the gas-liquid separator. The drying cavity 31 and filter cavity 32 in the filter-drying assembly 3 are used to filter and dry the refrigerant.

[0025] like Figure 3 As shown, a gas-liquid separator 100 is disclosed. A second housing 35 surrounds the outer periphery of a tube 2. The second housing 35 extends along the extension direction of the tube 2. Preferably, the second housing 35 is cylindrical. The extension direction of the second housing 35 is the same as that of the tube 2, which helps to reduce the radial dimension of the second housing 35. The wall that partially forms the drying chamber 31 is located in the second housing 35. Along the radial direction of the tube 2, the second housing 35 is located on one side of the drying element 4, and the tube 2 is located on the other side of the drying element 4. Along the radial direction of the filter-drying assembly 3, the drying element 4 is limited and connected to the wall forming the drying chamber 31. The drying element 4 is located between the second housing 35 and the tube 2. The second housing 35 has a certain limiting and supporting effect on the drying element 4, which helps to reduce the vibration and displacement of the drying element 4 and helps to stabilize the installation position of the drying element 4.

[0026] like Figure 3As shown, in some embodiments, the drying chamber 31 and the filter chamber 32 are arranged along the axial direction of the tube body 2. The drying chamber 31 is far away from the inlet 21 relative to the filter chamber 32. When the drying chamber 31 is close to the inlet 21, the drying element 4 in the drying chamber 31 may interfere with the gaseous refrigerant entering the inlet 21, thereby affecting the gaseous refrigerant intake efficiency, and there is even a risk that the drying element 4 will block the inlet 21.

[0027] like Figures 5 to 8 As shown, in some embodiments, the filter-drying assembly 3 includes a partition 5. Along the axial direction of the tube body 2, the drying chamber 31 is located on one side of the partition 5, and the filter chamber 32 is located on the other side of the partition 5. The partition 5 can prevent the drying element 4 from detaching from the drying chamber 31 and entering the filter chamber 32, thus avoiding interference of the drying element 4 with the inlet 21. Figure 6 As shown, when the drying component 4 is granular, the partition 5 also helps to reduce the possibility of particles clogging the filter screen 33 in the filter chamber 32, and also reduces the risk of particles entering the inlet 21; the partition 5 has a first through hole 341, and part of the tube 2 is located in the first through hole 341. The partition 5 extends from the second housing 35 to the tube 2. The partition 5 and the tube 2 are in clearance fit or abutment. The partition 5 is provided with through holes, and the filter drying component 3 can be fitted onto the tube 2, which helps to reduce the radial dimension of the filter drying component 3, and the fitting and installation steps are simple and easy to operate.

[0028] like Figure 2 and Figure 3 As shown, another gas-liquid separator 100 is disclosed. The gas-liquid separator includes a liquid distribution cup 6. The axial direction of the filter-drying assembly 3 is defined as the extension direction of the tube body 2. The second housing 35 includes a first end 353. Along the axial direction of the filter-drying assembly 3, the first end 353 is located at the end of the second housing 35 away from the drying chamber 31. The second housing 35 is limitedly connected to the liquid distribution cup 6. The liquid distribution cup 6 closes the first end 353. The liquid distribution cup 6 closes the first end 353, reducing the risk of gaseous refrigerant entering the inlet 21 from the first end 353, which is beneficial to improving the filtration effect of gaseous refrigerant. The limited connection between the second housing 35 and the liquid distribution cup 6 facilitates the disassembly and assembly of the filter-drying assembly 3. Preferably, the second housing 35 and the liquid distribution cup 6 are snap-fitted together. In the existing gas-liquid separator 100, after the gas and liquid refrigerants collide with the liquid distribution cup 6, the gaseous refrigerant enters the pipe body 2 and is discharged, while the liquid refrigerant accumulates around the liquid distribution cup 6 at the bottom of the first housing 1. When the dryer 4 comes into contact with the liquid refrigerant, the dryer 4 will generate a large number of bubbles, causing boiling, which will generate a lot of noise. When the second housing 35 is connected to the liquid distribution cup 6, the dryer 4 is relatively far away from the liquid refrigerant at the bottom of the housing, which helps to reduce the contact between the dryer 4 and the liquid refrigerant at the bottom of the housing, and helps to reduce the noise generated by the dryer 4 due to boiling.

[0029] In some implementations, such as Figure 3 As shown, the filter drying assembly 3 includes a support member 36. Along the axial direction of the tube body 2, the support member 36 is located at one end of the axial direction of the filter drying assembly 3. The support member 36 is limited or fixedly connected to the second housing 35 and to the guide tube. The support member 36 is used to connect to the second housing 35 and the guide tube. The support member 36 can be connected to the second housing 35 first, and then the connected filter drying assembly 3 can be connected to the tube body 2. Alternatively, the support member 36 can be connected to the tube body 2 first, and then the second housing 35 and its drying component 4 can be connected to the support member 36.

[0030] like Figure 3 As shown, in some embodiments of the support member 36, the axial direction of the filter drying assembly 3 is defined as the extension direction of the tube body 2. The second housing 35 includes a second end 354. Along the axial direction of the filter drying assembly 3, the second end 354 is located at the end of the second housing 35 away from the filter chamber 32. The support member 36 closes the second end 354. One end of the filter drying assembly 3 is limited or fixedly connected to the liquid dispersing cup 6, and the other end is limited or fixedly connected to the tube body 2. The installation method is simple and reliable, which is beneficial to improving the stability of the filter drying assembly 3. The support member 36 includes an extension 361 and a fixing part 362. At least part of the extension 361 is located on the circumferential outer side of the second housing 35. The extension 361 is snapped into the second housing 35. The snap-fit ​​connection between the support member 36 and the second housing 35 is beneficial to the disassembly and assembly of the filter installation assembly. The second end 354 is directly connected to the drying chamber 31, which is convenient for replacing the drying element 4 in the drying chamber 31, which is beneficial to improving the service life of the filter drying assembly 3.

[0031] like Figure 3 As shown, the fixing part 362 extends from the extension part 361 towards the tube body 2. The fixing part 362 has a second through hole 342, and part of the tube body 2 is located inside the second through hole 342. The fixing part 362 is fixedly connected to the second through hole 342. Preferably, the fixing part 362 is riveted to the second through hole 342. During installation, the second housing 35 is first connected to the support member 36, the filter drying assembly 3 is fitted onto the outer periphery of the tube body 2, the support member 36 is connected to the tube body 2, and finally the support member 36 is connected to the dispersing cup 6; or, the support member 36 is first connected to the tube body 2, and then both ends of the second housing 35 are connected to the support member 36 and the dispersing cup 6 respectively.

[0032] like Figures 3 to 9As shown, it is worth noting that the drying component 4 includes a molecular sieve package and molecular sieve particles. Currently, the molecular sieve package is often fixed to the tube body 2 by binding it with cable ties. However, the cable tie installation method requires high skill from the installer, and the cable ties are prone to loosening on the tube body 2. How to improve the stability of the filter installation is one of the key research focuses of those skilled in the art. Therefore, the inventors have integrated the filtration and drying functions into a filter drying component 3. The drying cavity 31 formed by the second housing 35 is used to accommodate and limit the drying component 4, and a support 36 is provided to connect to the tube body 2. During the installation process, the installation operation can be completed simply by placing the drying component 4 into the drying cavity 31 and then connecting the support 36 to the tube body 2. This reduces the difficulty of operation, reduces the risk of the filter sliding and falling off due to improper operation, and also helps to reduce the shaking and displacement of the drying component 4.

[0033] like Figures 5 to 9 As shown, another gas-liquid separator 100 is disclosed. The second housing 35 includes a first wall portion 351 and a second wall portion 352, which are fixedly connected or integrally formed. Along the axial direction of the tube body 2, the second wall portion 352 is located on one side of the partition 5, and the first wall portion 351 is located on the other side of the partition 5. The wall that partially forms the drying chamber 31 is located in the first wall portion 351, and the wall that partially forms the filter chamber 32 is located in the second wall portion 352. Figure 4 As shown, the first wall portion 351 has a third through hole 356, and at least two third through holes 356 have openings on the outer surface of the second housing 35. The third through holes 356 connect the receiving cavity 11 and the drying cavity 31. The second wall portion 352 has a fourth through hole 357, which connects the receiving cavity 11 and the filter cavity 32. Gaseous refrigerant can enter the drying cavity 31 through the third through hole 356 and enter the filter cavity 32 through the fourth through hole 357. The filter screen 33 is located only within the fourth through hole 356 and is used to filter the refrigerant entering the filter cavity 32. Figure 6 As shown, when the drying component 4 is composed of molecular sieve particles, the filter screen 33 can also be located inside the third through hole 356. The filter screen 33 is used to prevent the molecular sieve particles from leaking out of the filtration and drying assembly 3. Preferably, the filter screen 33 is connected to the second housing 35 by injection molding.

[0034] During the research process, the inventors discovered that due to the small internal space of the gas-liquid separator 100 housing, the area of ​​the drying chamber 31 is small in order to reduce the volume occupied by the filter-drying component 3. If the filter-drying component 3 is connected to the tube 2 first, the operating space is small, and it is difficult to insert the drying component 4 into the drying chamber 31, making installation difficult. If the drying component 4 is placed into the drying chamber 31 first and then connected to the tube 2, the drying component 4 located inside the drying chamber 31 will interfere with the installation of the tube 2, making installation difficult. In order to solve the problem of difficult installation of the drying component 4, the inventors pre-installed the drying component 4 by connecting it to the wall limiting connection forming the drying chamber 31, and then connected the whole assembly containing the drying component 4 to the tube 2 and the liquid dispersing cup 6, which helps to reduce the installation difficulty.

[0035] like Figures 5 to 6 As shown, in one embodiment that reduces the installation difficulty of the drying component 4, the filter-drying assembly 3 includes an inner wall portion 37, which surrounds the outer periphery of the tube body 2. The inner wall portion 37 and the first wall portion 351 are spaced apart. Along the axial direction of the tube body 2, one end of the inner wall portion 37 is fixedly connected to the partition plate 5 or is an integral structure therewith, and the other end of the inner wall portion 37 is fixedly connected to the support member 36 or is limited by a connection. Along the radial direction of the filter-drying assembly 3, the inner wall portion 37 is located on one side of the drying component 4, and the first wall portion 351 is located on the other side of the drying component 4. The drying component 4 is pre-installed by placing it into the cavity formed by the inner wall portion 37 and the first wall portion 351. During installation, the drying component 4 is simply placed into the drying cavity 31, and then the second shell 35 is fitted onto the outer periphery of the tube body 2, reducing the difficulty of operation. It is worth noting that, in order to reduce the radial dimension of the filter-drying assembly 3, the wall thickness of the inner wall portion 37 is preferably 0.2-1 mm, and the drying component 4 in the drying cavity 31 can be a molecular sieve bag or molecular sieve particles.

[0036] like Figure 7 As shown, in another embodiment that reduces the installation difficulty of the drying component 4, the filter-drying assembly 3 includes at least two support plates 38, which are spaced apart on the outer periphery of the tube body 2 and extend axially along the tube body 2. The support plates 38 are fixedly connected to the partition plate 5 or are integrally formed. Along the radial direction of the filter-drying assembly 3, the support plates 38 are located on one side of the drying component 4, and the first wall portion 351 is located on the other side of the drying component 4. The drying component 4 is pre-installed by placing it into the cavity formed by the support plates 38 and the first wall portion 351. During installation, the drying component 4 is simply placed into the drying cavity 31, and then the second housing 35 is fitted onto the outer periphery of the tube body 2, reducing the operational difficulty. It is worth noting that, in order to reduce the radial dimension of the filter-drying assembly 3, the wall thickness of the support plates 38 is preferably 0.2-1 mm.

[0037] like Figures 8 to 9As shown, in another embodiment that reduces the installation difficulty of the drying component 4, the filter drying assembly 3 includes a connector 39. Along the radial direction of the filter drying assembly 3, one end of the connector 39 is limited to the drying component 4, and the other end of the connector 39 is limited to the first wall portion 351. The drying component 4 and the second housing 35 are limited to each other by the connector 39. During installation, it is only necessary to limit the connection between the drying component 4 and the second housing 35, and then fit the second housing 35 onto the outer periphery of the tube body 2, which reduces the difficulty of operation.

[0038] like Figures 8 to 9 As shown, preferably, the connector 39 includes a first limiting part 31, a connecting part 393, and a second limiting part 392. The first wall part 351 includes a first connecting hole 355, and the drying component 4 includes a second connecting hole 41. The first limiting part 31 is located radially outside the first wall part 351, and the radial dimension of the first limiting part 31 is larger than the inner diameter of the first connecting hole 355. The second limiting part 392 is located radially inside the first wall part 351, and the radial dimension of the second limiting part 392 is larger than the inner diameter of the second connecting hole 41. The connecting part 393 passes through the first connecting hole 355 and the second connecting hole 41, and the connecting part 393 is fixedly connected to the first limiting part 31 and the second limiting part 392 or is an integral structure. The drying component 4 and the second housing 35 are limited and connected by the pin-like connector 39 structure, which is simple to operate. Then, the second housing 35 is fitted onto the outer periphery of the tube body 2, which reduces the difficulty of operation.

[0039] The terms “first,” “second,” “third,” and “fourth” used in this specification are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0040] It should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present invention. All technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A liquid storage device, characterized by, The liquid storage device comprises a first shell (1) and a pipe body (2), the first shell (1) has a containing cavity (11), at least part of the pipe body (2) is located in the containing cavity (11), and the pipe body (2) has an inlet (21); the liquid storage device comprises a filter drying assembly (3), the filter drying assembly (3) is located in the containing cavity (11), and the filter drying assembly (3) is limitingly connected or fixedly connected with the pipe body (2); the filter drying assembly (3) comprises a second shell (35), the second shell (35) is a one-piece structure, the second shell (35) has a drying cavity (31) and a filter cavity (32), the inlet (21) is located in the filter cavity (32), the filter drying assembly (3) comprises a filter screen (33), the filter screen (33) is fixedly connected or limitingly connected with the second shell (35), and the containing cavity (11) is in communication with the filter cavity (32) through mesh holes of the filter screen (33); the filter drying assembly (3) comprises a drying piece (4), and the drying piece (4) is located in the drying cavity (31).

2. The liquid storage device of claim 1, wherein, The second shell (35) surrounds the outer periphery of the pipe body (2), the second shell (35) extends along the extension direction of the pipe body (2), and along the radial direction of the pipe body (2), the second shell (35) is located on one side of the drying piece (4), and the pipe body (2) is located on the other side of the drying piece (4); along the radial direction of the filter drying assembly (3), the drying piece (4) is limitingly connected with the wall forming the drying cavity (31).

3. The liquid storage device of claim 2, wherein, The filter drying assembly (3) comprises a partition plate (5), along the axial direction of the pipe body (2), the drying cavity (31) is located on one side of the partition plate (5), the filter cavity (32) is located on the other side of the partition plate (5), and the drying cavity (31) is away from the inlet (21) relative to the filter cavity (32); the partition plate (5) has a first through hole (341), part of the pipe body (2) is located in the first through hole (341), the partition plate (5) extends from the second shell (35) to the pipe body (2), and the partition plate (5) is in clearance fit or abutment with the pipe body (2).

4. The liquid storage device of claim 2, wherein, The liquid storage device (100) is a gas-liquid separator, the gas-liquid separator comprises a liquid scattering cup (6), the axial direction of the filter drying assembly (3) is defined as the extension direction of the pipe body (2), the second shell (35) comprises a first end (353), along the axial direction of the filter drying assembly (3), the first end (353) is located at one end of the second shell (35) away from the drying cavity (31), the second shell (35) is limitingly connected with the liquid scattering cup (6), and the liquid scattering cup (6) seals the first end (353).

5. The liquid storage device of claim 4, wherein, The filter-drying assembly (3) comprises a support (36) located at one end of the filter-drying assembly (3) in the axial direction of the tube body (2), and the support (36) is limitingly connected or fixedly connected with the second shell (35) and the tube body (2).

6. The liquid storage device of claim 5, wherein, The axial direction of the filter-drying assembly (3) is defined as the extending direction of the tube body (2), the second shell (35) comprises a second end (354) located at one end of the second shell (35) away from the filter cavity (32) in the axial direction of the filter-drying assembly (3), and the support (36) closes the second end (354); the support (36) comprises an extending portion (361) and a fixing portion (362), at least part of the extending portion (361) is located outside the circumferential direction of the second shell (35), and the extending portion (361) is clamped with the second shell (35); the fixing portion (362) extends from the extending portion (361) to the tube body (2), the fixing portion (362) has a second through hole (342), and part of the tube body (2) is located in the second through hole (342), and the fixing portion (362) is fixedly connected with the second through hole (342).

7. The liquid storage device of claim 5, wherein, The second shell (35) comprises a first wall portion (351) and a second wall portion (352); in the axial direction of the tube body (2), part of the wall forming the drying cavity (31) is located in the first wall portion (351), and part of the wall forming the filter cavity (32) is located in the second wall portion (352); the first wall portion (351) has a third through hole (356), at least two third through holes (356) have openings on the outer surface of the second shell (35), and the third through hole (356) communicates the containing cavity (11) and the drying cavity (31); the second wall portion (352) has a fourth through hole (357), and the fourth through hole (357) communicates the containing cavity (11) and the filter cavity (32); the filter screen (33) is located in the third through hole (356) and the fourth through hole (357), or the filter screen (33) is only located in the fourth through hole (357).

8. The liquid storage device of claim 7, wherein, The filter drying assembly (3) comprises an inner wall portion (37) which is arranged around the outer periphery of the pipe body (2), the inner wall portion (37) is arranged in a spaced manner with the first wall portion (351), the filter drying assembly (3) comprises a partition plate (5), along the axial direction of the pipe body (2), one end of the inner wall portion (37) is fixedly connected with the partition plate (5) or is in an integral structure, the other end of the inner wall portion (37) is fixedly connected with the support (36) or is in a limiting connection; along the radial direction of the filter drying assembly (3), the inner wall portion (37) is located on one side of the drying piece (4), the first wall portion (351) is located on the other side of the drying piece (4); or, the filter drying assembly (3) comprises at least two support plates (38), the support plates (38) are arranged in a spaced manner around the outer periphery of the pipe body (2), the support plates (38) extend along the axial direction of the pipe body (2), the support plates (38) are fixedly connected with the partition plate (5) or are in an integral structure; along the radial direction of the filter drying assembly (3), the support plates (38) are located on one side of the drying piece (4), the first wall portion (351) is located on the other side of the drying piece (4).

9. The liquid storage device of claim 7, wherein, The filter drying assembly (3) comprises a connecting piece (39), the connecting piece (39) comprises a first limiting portion (391), a connecting portion (393) and a second limiting portion (392), the first wall portion (351) comprises a first connecting hole (355), the drying piece (4) comprises a second connecting hole (41), the first limiting portion (391) is located on the radial outer side of the first wall portion (351), the radial dimension of the first limiting portion (391) is greater than the inner diameter of the first connecting hole (355); the second limiting portion (392) is located on the radial inner side of the first wall portion (351), the radial dimension of the second limiting portion (392) is greater than the inner diameter of the second connecting hole (41); the connecting portion (393) passes through the first connecting hole (355) and the second connecting hole (41), the connecting portion (393) is fixedly connected with the first limiting portion (391) and the second limiting portion (392) or is in an integral structure.

10. The liquid storage device of any one of claims 1-9, wherein, The liquid storage device (100) is a gas-liquid separator, the gas-liquid separator comprises a head (8) and a liquid distribution cup (6), the head (8) is limit connected or fixedly connected with the shell, the liquid distribution cup (6) is close to the head (8) relative to the filter drying assembly (3), the head (8) comprises an inlet (81), and a gap is formed between the liquid distribution cup (6) and the inlet (81), the pipe body (2) comprises a heat exchange pipe (22), the pipe body (2) comprises the heat exchange pipe (22) and a sleeve pipe (23), the sleeve pipe (23) is sleeved on the radial outer side of at least part of the heat exchange pipe (22), the heat exchange pipe (22) is limit connected or fixedly connected with the head (8), a first flow channel (24) is formed between the heat exchange pipe (22) and the sleeve pipe (23), and the first flow channel (24) has an opening at one end close to the liquid distribution cup (6), and the opening is the inlet (21).

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