Liquid reservoir

Abstract

A liquid reservoir. The liquid reservoir comprises a filter assembly and a hole portion; the hole portion is provided with a hole cavity; the filter assembly comprises a limiting portion and a deformation portion; at least part of the limiting portion and the deformation portion is located in the hole cavity; the direction in which the limiting portion is mounted in the hole cavity is defined as a first direction; the hole portion comprises a first wall surface; in the first direction, the limiting portion and the deformation portion are located on the same side of the first wall surface; the deformation portion can deform; and at least part of the limiting portion is in limiting connection with the first wall surface. In this way, the assembling convenience can be improved.

Description

Liquid reservoir

[0001] This application claims priority to two Chinese patent applications, application number 202420647845.9 filed with the China Patent Office on March 29, 2024, with the invention name “Liquid Reservoir”, and application number 202421407894.1 filed with the China Patent Office on June 19, 2024, with the invention name “Liquid Reservoir”, the entire contents of which are incorporated into this application by reference. Technical Field

[0002] The present application relates to the field of thermal management technology, and in particular to a liquid reservoir. Background Art

[0003] The main functions of the liquid receiver are to store the refrigerant in the system, filter impurities, and absorb moisture. The liquid receiver for automotive air conditioners is generally composed of an aluminum upper body (or head) and a lower body welded together to form a container for storing liquid refrigerant.

[0004] However, in the related art, the filter portion in the liquid reservoir needs to be fixed to the liquid reservoir with additional parts, which increases the installation steps and materials. Summary of the Invention

[0005] The purpose of this application is to provide a liquid reservoir that can improve the convenience of assembly.

[0006] To achieve the above objectives, one embodiment of the present application adopts the following technical solution:

[0007] A liquid reservoir comprises a filter assembly and a hole portion, the hole portion having a cavity, the filter assembly comprising a limiting portion and a deformable portion, at least portions of the limiting portion and the deformable portion being located in the cavity; a direction in which the limiting portion is installed into the cavity is defined as a first direction; the hole portion comprises a first wall surface, along which the limiting portion and the deformable portion are located on the same side of the first wall surface, the deformable portion being capable of deformation, and at least portions of the limiting portion being connected to the first wall surface in a limiting manner.

[0008] In one embodiment provided herein, a liquid reservoir includes a filter assembly and a hole portion. Along a first direction, a limiting portion and a deformable portion are located on the same side of a first wall surface, and at least a portion of the limiting portion is in position-limiting connection with the first wall surface. When the limiting portion is inserted into the hole cavity along the first direction, the deformable portion can deform to facilitate smoother insertion of the limiting portion into the hole cavity, thereby enhancing assembly convenience. Furthermore, the first wall surface can exert a certain limiting effect on the limiting portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] FIG1 is a schematic diagram of the three-dimensional structure of the liquid reservoir in this application;

[0010] FIG2 is a schematic diagram of the structure of the liquid reservoir shown in FIG1 from above;

[0011] FIG3 is a schematic cross-sectional view of the structure at AA in FIG2 ;

[0012] FIG4 is a schematic structural diagram of FIG1 without the housing;

[0013] FIG5 is a partial enlarged view of point B in FIG3;

[0014] FIG6 is a schematic structural diagram of the filter assembly in FIG4 being separated from the head;

[0015] FIG7 is an exploded view of FIG4;

[0016] FIG8 is a schematic diagram of the three-dimensional structure of the filter assembly in FIG4;

[0017] FIG9 is a cross-sectional view of another embodiment of the liquid reservoir of the present application before riveting;

[0018] FIG10 is a partial enlarged view of point C in FIG9;

[0019] FIG11 is a cross-sectional view of another embodiment of the liquid reservoir of the present application after riveting;

[0020] FIG12 is a partial enlarged view of point D in FIG11 .

[0021] Explanation of the main component symbols: 100, liquid reservoir; 10, housing; 11, liquid storage chamber; 20, head; 2, hole portion; 21, hole cavity; 211, mounting section; 212, limiting section; 213, sealing section; 22, first port; 23, second port; 24, protrusion; 30, filter assembly; 301, cavity; 31, embedded portion; 32, limiting portion; 321, first end wall; 322, side wall; 323, second end wall; 324. First wall; 33. Frame; 3. Deformation portion; 331. Deformation groove; 34. Sealing portion; 40. Flow guide tube; 41. Sealing ring; 50. Riveting groove; 51. First retaining net; 511. First supporting portion; 512. First limiting portion; 52. Second retaining net; 521. Second supporting portion; 522. Second limiting portion; 53. First filter disc; 54. Second filter disc; 55. Desiccant.

[0022] The above description of the main component symbols is combined with the accompanying drawings and specific implementation methods to further illustrate this application in detail. DETAILED DESCRIPTION

[0023] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0024] The present application will be further described below with reference to the accompanying drawings and specific embodiments:

[0025] As shown in Figures 1 to 6, the present application provides a liquid reservoir 100, which includes a head 20 and a filter assembly 30. The head 20 has a hole portion 2, and the hole portion 2 has a cavity 21. The filter assembly 30 includes a limit portion 32 and a deformable portion 3, at least part of which is located in the cavity 21. The direction in which the limit portion 32 is inserted into the cavity 21 is defined as a first direction (as shown by H in Figure 3). The hole portion 2 includes a first wall 324. Along the first direction, the limit portion 32 and the deformable portion 3 are located on the same side of the first wall 324. The deformable portion 3 can be deformed, and at least part of the limit portion 32 is connected to the first wall 324. It should be noted that when the limit portion 32 is inserted into the limit section 212 along the first direction, the deformable portion 3 can be deformed so that the limit portion 32 can be more smoothly inserted into the cavity 21, thereby improving the convenience of assembly. Furthermore, the limiting portion 32 is connected to the first wall surface 324 in a limiting manner, so that the first wall surface 324 can have a certain limiting effect on the limiting portion 32 .

[0026] The limiting portion 32 includes a first end wall 321. The deformable portion 32 has a deformable groove 331, at least a portion of which is located in the cavity 21. The deformable groove 331 is recessed from the first end wall 321 in a direction opposite to the first direction. It should be noted that because the deformable groove 331 is recessed from the first end wall 321 in a direction away from the head 20, when the limiting portion 32 is installed into the limiting section 212 in the first direction, the deformable groove 331 can deform inward, allowing the limiting portion 32 to be installed in the cavity 21, thereby improving assembly convenience.

[0027] Please refer to Figure 8 for details. The filter assembly 30 has a cavity 301. The wall forming the cavity 301 includes at least two limiting portions 32. The limiting portions 32 are at least two in number. The at least two limiting portions 32 are located at both ends of one of the deformation grooves 331. The limiting portions 32 can be deformed toward the cavity 301. It should be noted that in this embodiment, there are four limiting portions 32, and the number of limiting portions 32 corresponds to the number of deformation grooves 331. Since every two limiting portions 32 are located on both sides of a deformation groove 331, each limiting portion 32 can be deformed independently. In addition, the cavity 301 provides deformation space. Therefore, the multiple limiting portions 32 can be deformed toward the cavity 301, so that the limiting portions 32 can be smoothly installed in the cavity 21.

[0028] As shown in conjunction with Figures 5 and 6 , in this embodiment, a plane perpendicular to the first direction is defined as a reference plane; the hole portion 2 includes a limiting section 212, which includes a first wall surface 324. Along the first direction, the projection of the limiting section 32 on the reference plane at least partially overlaps with the projection of the first wall surface 324 on the reference plane. Specifically, along the first direction, the projection of the limiting section 32 on the reference plane at least partially overlaps with the projection of the first wall surface 324 on the reference plane. This interaction between the limiting section 32 and the first wall surface 324 effectively prevents the filter assembly 30 from falling off, thereby reducing the risk of the filter assembly 30 falling off.

[0029] In this embodiment, the limiting portion 32 has a sidewall 322. Along a first direction, the radial dimension of the sidewall 322 increases from the first end wall 321 toward the first wall surface 324. The sidewall 322 can abut or loosely fit with the limiting section 212. The second end wall 323 can abut against the first wall surface 324, specifically in a direction opposite to the first direction, to prevent the filter from retreating. It should be noted that, based on the perspective of Figure 6, in this embodiment, the first end wall 321 is arranged along the horizontal direction of the liquid reservoir 100, and the sidewall 322 is arranged to expand in diameter from the first end wall 321 toward the first wall surface 324. In this way, the sidewall 322 can play a certain guiding role, allowing the filter structure to be more smoothly installed in the cavity 21.

[0030] In some embodiments, the limiting portion 32 has a second end wall 323. Along the first direction, the first end wall 321 is away from the first wall surface 324 relative to the second end wall 323. When the limiting portion 32 is inserted into the cavity 21 along the first direction, the second end wall 323 abuts against the first wall surface 324. This can better limit the limiting portion 32 in the limiting section 212, thereby preventing backward movement. The limiting portion 32 is not easy to loosen and has good stability.

[0031] In some embodiments, the limiting section 212 is adjacent to the first wall 324, and the limiting section 212 is disposed opposite to the side wall 322. It should be noted that the "relative arrangement" here means that the limiting section 212 can be disposed parallel to the side wall 322 or at a certain angle to the side wall 322, as long as the second end wall 323 abuts the first wall 324 when the filter structure is at least partially installed in the cavity 21. This can effectively restrain the filter assembly 30 and prevent the filter assembly 30 from falling out of the cavity 21.

[0032] Referring to Figures 1 to 6 , the liquid reservoir 100 includes a housing 10, a sealing head 20 fixedly connected or positionally connected to the housing 10, the sealing head 20 having an aperture 2, the aperture 2 including a mounting section 211, and a filter assembly 30 including an insert 31. The insert 31 is fixedly connected or positionally connected to a retaining section 32, or is an integral structure. Along a first direction, the insert 31 is spaced away from the first end wall 321 relative to the retaining section 32, at least a portion of the insert 31 is located within the aperture 21, and at least a portion of the insert 31 is capable of abutting the mounting section 211. In this embodiment, the housing 10 and the sealing head 20 are fixedly connected by welding, although other fixing methods may be used in other embodiments.

[0033] Specifically, the embedded portion 31 and the limiting portion 32 are fixedly connected or limitedly connected or form an integral structure, and at least a portion of the embedded portion 31 is located within the cavity 21 and abuts the mounting section 211. Along the radial direction of the liquid reservoir 100, the size of the embedded portion 31 is larger than the size of the mounting section 211. The embedded portion 31 requires external extrusion force to assemble at least a portion of the embedded portion 31 into the mounting section 211. This effectively restricts the filter assembly 30 and prevents the filter assembly 30 from loosening. The dimensions mentioned in the above embodiments are dimensions perpendicular to the first direction, such as diameter, width, etc. Furthermore, at least a portion of the limiting portion 32 is located within the cavity 21. When the filter assembly 30 is assembled into the cavity 21, the limiting portion 32 can abut against the first wall 324, which can provide a certain anti-regression effect, thereby reducing the risk of the filter assembly 30 falling off.

[0034] As shown in Figures 3, 5, 6 and 8, the filter assembly 30 includes a frame 33, which is used to fix the filter screen structure (not shown in the figure). The embedded portion 31 and the frame 33 are an integral structure, and the embedded portion 31 extends from the frame 33 toward the reference plane. In this embodiment, the embedded portion 31 is interference fit with the mounting section 211. It should be noted that in the related art, it is often necessary to rivet the aluminum ring and the frame 33 onto the head 20 through tooling to achieve the fixation of the frame 33. In the present application, the frame 33 and the embedded portion 31 are an integral structure, which can directly reduce the investment in the aluminum ring and reduce the cost of parts. Specifically, the frame 33 and the embedded portion 31 are integrally injection molded. The weight difference between the frame 33 with the embedded portion 31 structure and the frame 33 without the embedded portion 31 structure is not much. The weight change of the frame 33 is less than 0.2 grams, which has a small impact. In addition, it can be seen that due to the reduction of aluminum rings, the radial diameter of the frame 33 along the liquid reservoir 100 can be made larger, and the effective filtration area is correspondingly increased, which can reduce the flow resistance of the product and reduce the risk of clogging of the frame 33.

[0035] The terms "first", "second", "third" and "fourth" in this specification 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.

[0036] It should be noted that the directional words such as up, down, left, right, front, and back mentioned in this specification are based on the directions in the drawings of the specification. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on this application.

[0037] Furthermore, the filter assembly 30 includes a sealing portion 34, and the aperture 2 includes a sealing section 213. Along the first direction, the sealing portion 34 is located between the embedded portion 31 and the stopper 32, and the sealing section 213 is located between the mounting section 211 and the stopper 212. At least a portion of the sealing portion 34 is located within the aperture 21, and at least a portion of the sealing portion 34 is capable of abutting or interference fitting with the wall of the sealing section 213. Specifically, along the first direction, the embedded portion 31 is closer to the liquid storage chamber 11 than the stopper 32, with the embedded portion 31 located above the sealing portion 34 and the stopper 32 located below the sealing portion 34. It should be noted that, along the first direction, the sealing portion 34 is located between the embedded portion 31 and the limiting portion 32, and the cross-section of the sealing portion 34 is semicircular. On the one hand, the sealing portion 34 can play a certain anti-backward effect, and the anti-backward effect is good; on the other hand, because the end of the sealing portion 34 close to the sealing section 213 is arc-shaped and can abut against the sealing section 213, it can play a certain sealing effect, without the need to set a separate sealing structure, which can prevent impurities from flowing out of the gap and can also play a certain limiting role. Specifically, the sealing portion 34 is generally made of elastic material, and an injection molding material can be selected. In this embodiment, the frame 33, the embedded portion 31, the sealing portion 34 and the limiting portion 32 are all integrated structures, and are injection molded using plastic raw materials. This can reduce the assembly steps and improve the convenience of assembly.

[0038] In the present application, along the radial direction of the liquid reservoir 100, the size of the embedded portion 31 is larger than the size of the limiting portion 32, so that the strength of the embedded portion 31 is relatively high. When the external structure squeezes the cavity 21, the deformation of the cavity 21 will generate greater pressure on the embedded portion 31 located at the upper part, and a greater friction force can be generated between the embedded portion 31 and the mounting section 211. This has a better restriction effect on the embedded portion 31, and the embedded portion 31 will not easily detach from the cavity 21.

[0039] Please refer to Figure 3 for details. The liquid reservoir 100 includes a flow conduit 40, which is arranged along the length of the liquid reservoir 100. The shell 10 has a liquid storage chamber 11, and the head 20 has a first port 22 and a second port 23. In some embodiments, the first port 22 can be either an inlet or an outlet. When the first port 22 is an inlet, the second port 23 is an outlet; when the first port 22 is an outlet, the second port 23 is an inlet. The filter assembly 30 is connected to the first port 22, and at least part of the frame 33 is located within the liquid storage chamber 11. One end of the flow conduit 40 is connected to the second port 23, and the other end of the flow conduit 40 is connected to the liquid storage chamber 11. It should be noted that in this embodiment, the first port 22 is the outlet, and the second port 23 is the inlet. Specifically, the refrigerant flows from the second port 23 through the flow conduit 40 into the liquid storage chamber 11, and then passes through the frame 33 to filter internal impurities and finally flows out of the first port 22.

[0040] Please refer to Figure 8 specifically. In some embodiments, the deformation groove 331 extends from the first end wall 321 to the sealing portion 34 in the opposite direction of the first direction. There are multiple deformation grooves 331, and the deformation grooves 331 can be semicircular, rectangular or triangular, etc. In this embodiment, the deformation groove 331 is U-shaped, and the number of the deformation grooves 331 is four, and the four deformation grooves 331 are arranged around the bottom of the limiting portion 32. Specifically, the deformation groove 331 is arranged through the frame 33, so that when the filter component 30 is squeezed into the cavity 21 by the external structure, the deformation groove 331 can provide a certain amount of deformation, which can reduce the damage to the filter component 30 during the squeezing process and play a certain protective role for the filter component 30. In addition, the deformation groove 331 can be deformed inward so that the limiting portion 32 can be installed in the cavity 21, which can improve the convenience of assembly.

[0041] 3 , the liquid reservoir 100 preferably further includes a sealing ring 41. The sealing ring 41 surrounds the flow conduit 40 along the circumference of the liquid reservoir 100 and abuts against the flow conduit 40 and the end cap 20. The sealing ring 41 abuts against the inner walls of the flow conduit 40 and the end cap 20, respectively, thereby providing a good sealing effect and effectively preventing refrigerant leakage.

[0042] Please refer to Figure 7 for details. The head 20 has two or more riveted grooves 50, which are circumferentially arranged around the outer periphery of the filter assembly 30. It should be noted that when the filter assembly 30 is assembled into the cavity 21, at least part of the embedded portion 31 is located in the cavity 21 and abuts against the mounting section 211, and at least part of the limiting portion 32 is located in the cavity 21 and abuts against the limiting section 212. At this time, the second end wall 323 abuts against the first wall 324, and at least part of the filter assembly 30 is confined within the cavity 21. The external structure then squeezes the riveted grooves 50, causing the mounting section 211 to deform toward the frame 33, thereby better fixing the frame 33 in the cavity 21. This has a good limiting effect and is less likely to loosen or fall off. Generally speaking, the number of rivet grooves 50 is preferably but not limited to four. The four rivet grooves 50 are evenly distributed on the periphery of the frame 33. Riveting can cause slight changes in the shape of the nearby cavity 21. The wall forming the cavity 21 will squeeze the peripheral side structure at the bottom of the frame 33, so that the friction between the peripheral side structure at the bottom of the frame 33 and the wall forming the cavity 21 is greatly increased, which can better confine the frame 33 to the cavity 21.

[0043] As shown in Figures 3, 4 and 7, the liquid reservoir 100 also includes a first screen 51, a second screen 52 and a first filter 53. The first screen 51 and the second screen 52 are both located in the liquid storage chamber 11. Along the axial direction of the liquid reservoir 100, the first screen 51 is close to the head 20 relative to the second screen 52, and the filter is located between the first screen 51 and the second screen 52.

[0044] The liquid reservoir 100 further includes a second filter disc 54 and a desiccant 55 . The first filter disc 53 is located at the upper end of the first retaining net 51 , the second filter disc 54 is located at the lower end of the second retaining net 52 , and the desiccant 55 is located between the first filter disc 53 and the second filter disc 54 .

[0045] The first retaining net 51 includes a first supporting portion 511 and a first limiting portion 512. The first supporting portion 511 abuts against the inner wall of the shell 10. The first limiting portion 512 extends from the first supporting portion 511 toward the head 20. The guide tube 40 abuts against the first supporting portion 511 and is used to limit the guide tube 40 in the radial direction.

[0046] The second retaining net 52 includes a second supporting portion 521 and a second limiting portion 522. The second supporting portion 521 abuts against the inner wall of the shell 10. The second limiting portion 522 extends from the second supporting portion 521 in a direction away from the head 20. The guide tube 40 abuts against the second supporting portion 521. The first limiting portion 512 and the second limiting portion 522 cooperate with each other to limit the guide tube 40 in the radial direction, and the restrictive effect is good.

[0047] Specifically, in this embodiment, the refrigerant flows into the liquid storage chamber 11 from the second port 23 through the guide tube 40, and then passes through the second baffle 52, the second filter 54 and the desiccant 55 in sequence. The desiccant 55 is used to dry and absorb moisture in the refrigerant, and then passes through the first filter 53 and the first baffle 51. The first filter 53 is used to filter internal impurities, and finally passes through the frame 33 to further filter the internal impurities and flows out from the first port 22.

[0048] As shown in Figures 9 to 12, in some embodiments, based on the basic structure of the above embodiments, the frame 33 in this embodiment further includes a protrusion 24, which is inclined toward the frame 33, and at least part of the protrusion 24 abuts against the outer peripheral side of the frame 33. Please refer to Figures 11 and 12 for details. It should be noted that before riveting, the protrusion 24 extends from the head 20 toward the liquid storage chamber 11, and the protrusion 24 is arranged around the outer periphery of the frame 33, as shown in Figures 9 and 10; when the filter assembly 30 is assembled in the cavity 21, it is necessary to rivet the protrusion 24 inward through the external structure so that the protrusion 24 is deformed toward the frame 33, as shown in Figures 11 and 12. This can better fix the frame 33 in the cavity 21 and achieve a good limiting effect.

[0049] In other embodiments, the embedded portion 31 can be omitted, and the filter assembly can be restricted by a combination of the limiting portion 32, the frame 33, the sealing portion 34, and the protrusions 24. This provides a good restriction and a certain degree of anti-reversal effect. Furthermore, the number of protrusions 24 can be one or more, with "multiple" here meaning at least two. When there is only one protrusion 24, the protrusion 24 is an annular protrusion 24 that surrounds the outer periphery of the frame 33. When there are multiple protrusions 24, the multiple protrusions 24 are spaced apart and arranged in a circle around the outer periphery of the frame 33.

[0050] The present application also provides a method for installing a filter assembly 30 for assembling a liquid reservoir 100. The method for installing the filter assembly 30 includes the following steps:

[0051] Installing at least a portion of the filter assembly 30 into the cavity 21;

[0052] The deformation groove 331 deforms inwardly, enabling at least a portion of the limiting portion 32 to be in a position-limiting connection with the wall forming the cavity 21. In this embodiment, when at least a portion of the filter assembly 30 is installed in the cavity 21, the deformation groove 331 deforms inwardly, enabling the limiting portion 32 to be installed in the cavity 21 and to be in a position-limiting connection with the wall forming the cavity 21. This improves assembly convenience. By squeezing the riveting groove 50, the wall forming the mounting section 211 is deformed toward the frame 33, thereby better restraining the filter assembly 30 and reducing the risk of the filter assembly 30 falling off.

[0053] It should be noted that the above embodiments are only used to illustrate the present application and are not intended to limit the technical solutions described in the present application. Although this specification has described the present application in detail with reference to the above embodiments, ordinary technicians in this field should understand that technicians in the relevant technical field can still modify or replace the present application with equivalents, and all technical solutions and improvements that do not depart from the spirit and scope of the present application should be included in the scope of the claims of the present application.

Claims

1. A liquid reservoir, characterized in that: The invention comprises a filter assembly (30) and a hole portion (2), wherein the hole portion (2) has a hole cavity (21). The filter assembly (30) comprises a limiting portion (32) and a deformable portion (3), and at least a portion of the limiting portion (32) and at least a portion of the deformable portion (3) are located in the cavity (21); The direction in which the limiting portion (32) is installed into the cavity (21) is defined as a first direction; The hole portion (2) includes a first wall surface (324); along the first direction, the limiting portion (32) and the deformable portion (3) are located on the same side of the first wall surface (324); the deformable portion (3) is capable of deformation; and at least a portion of the limiting portion (32) is connected to the first wall surface (324) in a limiting manner.

2. The liquid reservoir according to claim 1, characterized in that The limiting portion (32) comprises a first end wall (321), and the deformable portion (3) has a deformable groove (331), wherein the deformable groove (331) is recessed from the first end wall (321) in a direction opposite to the first direction.

3. The liquid reservoir according to claim 2, characterized in that The filter assembly (30) has a cavity (301), and the wall forming the cavity (301) includes at least the limiting portion (32). The number of the limiting portions (32) is at least two, and at least two of the limiting portions (32) are located at both ends of one of the deformation grooves (331). The limiting portions (32) can be deformed toward the cavity (301).

4. The liquid reservoir according to claim 2, characterized in that A plane perpendicular to the first direction is defined as a reference plane; the hole portion (2) includes a limiting section (212), the limiting section (212) includes the first wall surface (324), the limiting portion (32) includes a second end wall (323), along the first direction, the first end wall (321) is away from the first wall surface (324) relative to the second end wall (323), and the projection of the limiting portion (32) on the reference plane at least partially overlaps with the projection of the first wall surface (324) on the reference plane.

5. The liquid reservoir according to claim 4, characterized in that The limiting portion (32) has a side wall (322). Along the first direction, the radial dimension of the side wall (322) increases from the first end wall (321) toward the first wall surface (324). The side wall (322) can abut or fit with the limiting section (212) in a clearance manner, and the second end wall (323) can abut against the first wall surface (324).

6. The liquid reservoir according to claim 4 or 5, characterized in that: The liquid storage device comprises a shell (10) and a sealing head (20), wherein the shell (10) is fixedly connected or position-limitedly connected to the sealing head (20), the sealing head (20) has the hole portion (2), and the hole portion (2) includes a mounting section (211); The filter assembly (30) includes an embedded portion (31), and along the first direction, the embedded portion (31) is away from the first end wall (321) relative to the limiting portion (32), at least a portion of the embedded portion (31) is located in the cavity (21), and at least a portion of the embedded portion (31) can abut against the mounting section (211).

7. The liquid reservoir according to claim 6, characterized in that The filter assembly (30) further includes a sealing portion (34), and the hole portion (2) includes a sealing section (213); Along the first direction, the sealing portion (34) is located between the embedded portion (31) and the limiting portion (32), at least a portion of the sealing portion (34) is located in the cavity (21), and at least a portion of the sealing portion (34) can abut against the sealing section (213).

8. The liquid reservoir according to claim 6, characterized in that The filter assembly (30) comprises a frame (33), the embedded portion (31) and the frame (33) are an integral structure, and the embedded portion (31) extends from the frame (33) toward the reference plane.

9. The liquid reservoir according to claim 8, characterized in that The sealing head (20) further comprises a protrusion (24), the protrusion (24) being inclined toward the frame (33), and at least a portion of the protrusion (24) being in contact with the outer peripheral side of the frame (33).

10. The liquid reservoir according to claim 8 or 9, characterized in that: The liquid reservoir comprises a flow guide tube (40), the housing (10) has a liquid storage cavity (11), and the sealing head (20) has a first port (22) and a second port (23); The filter assembly (30) is in communication with the first port (22), and at least a portion of the frame (33) is located within the liquid storage cavity (11); One end of the flow guide tube (40) is in communication with the second port (23), and the other end of the flow guide tube (40) is in communication with the liquid storage chamber (11).

11. The liquid reservoir according to claim 10, characterized in that The liquid reservoir further comprises a sealing ring (41), which surrounds the flow guide tube (40) along the circumference of the liquid reservoir, and the sealing ring (41) abuts against the flow guide tube (40) and the sealing head (20) respectively.

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