Reservoir drier

By designing a main cylinder and a secondary cylinder, the liquid storage space of the liquid receiver dryer is expanded, solving the problem of limited installation location of the liquid receiver cylinder and realizing flexible arrangement and efficient refrigerant storage of the liquid receiver dryer.

CN224470507UActive Publication Date: 2026-07-07SHANGHAI BEHR THERMAL SYST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI BEHR THERMAL SYST
Filing Date
2025-07-29
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

The internal space of the liquid storage cylinder of existing liquid storage dryers is limited, and the installation location is greatly restricted by the shape, making it impossible to arrange flexibly.

Method used

It adopts a main cylinder and a secondary cylinder structure. The main cylinder is equipped with a liquid inlet and a liquid outlet and includes a dehumidification module. The secondary cylinder is connected to the main cylinder and is used to store the dried refrigerant. By adding a secondary cylinder on the basis of the main cylinder, the liquid storage space is expanded, and the shape can be flexibly adjusted to adapt to different installation positions.

Benefits of technology

Without increasing material usage or reducing pressure resistance, the liquid storage space is expanded, enabling flexible arrangement and compact installation of the liquid storage dryer, thus ensuring the drying effect of the refrigerant.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to vehicle air conditioning manufacturing technical field discloses a kind of liquid storage dryer. The liquid storage dryer includes main cylinder and auxiliary cylinder, main cylinder is connected to auxiliary cylinder, and inlet and outlet are equipped on main cylinder, and main cylinder has main cavity with inlet communication, dehumidification module is equipped in main cavity, auxiliary cylinder has auxiliary cavity, auxiliary cavity one end is communicated with main cavity and other end is communicated outlet;After installing liquid storage dryer in the installation position of refrigeration system, refrigerant can flow into main cavity from inlet, enter auxiliary cavity after drying via dehumidification module, auxiliary cylinder is mainly used to store the refrigerant after dehumidification, and refrigerant can flow out from outlet as required, by further adding auxiliary cylinder on the basis of main cylinder, more refrigerant can be stored, and the appearance of liquid storage dryer can be changed according to the relative position of main cylinder and auxiliary cylinder, so that the liquid storage dryer can be arranged flexibly, and the installation position is prevented from being limited by appearance.
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Description

Technical Field

[0001] This utility model relates to the field of vehicle air conditioning manufacturing technology, and in particular to a liquid storage dryer. Background Technology

[0002] The automotive air conditioning receiver-dryer is one of the key components of the automotive air conditioning refrigeration system. It is mainly used to store refrigerant. The receiver-dryer can absorb moisture in the refrigerant to prevent corrosion of the air conditioning pipes. At the same time, it can also block impurities to prevent ice blockage and dirt blockage in the refrigeration system pipes, ensuring the normal operation of the refrigeration system.

[0003] In existing technologies, a cylindrical body is usually used as the liquid storage tank of the liquid storage dryer. The internal space of the cylinder is limited, so the only way to increase the internal liquid storage space is to enlarge the outer diameter of the cylinder. The installation position is greatly restricted by the shape, making it impossible to arrange the liquid storage tank flexibly.

[0004] That is, the existing liquid storage dryer has a cylindrical liquid storage tank. While expanding the liquid storage space, its installation position is greatly restricted by its shape, which has the disadvantage of not being able to arrange it flexibly. Utility Model Content

[0005] The purpose of this invention is to provide a liquid storage dryer that optimizes the cylinder shape while expanding the liquid storage space, making the arrangement of the liquid storage dryer more flexible.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] This utility model provides a liquid storage dryer, including a main cylinder and a secondary cylinder. The main cylinder is connected to the secondary cylinder. The main cylinder is provided with a liquid inlet and a liquid outlet. The main cylinder has a main cavity communicating with the liquid inlet. The main cavity is provided with a dehumidification module. The secondary cylinder is provided with a secondary cavity. One end of the secondary cavity is connected to the main cavity and the other end is connected to the liquid outlet, so that refrigerant flows into the main cavity from the liquid inlet, is dried by the dehumidification module, enters the secondary cavity, and flows out from the liquid outlet.

[0008] As an optional technical solution for a liquid storage dryer, the main cylinder is provided with an isolation component that divides the main cavity into a first cavity and a second cavity. The dehumidification module is located in the first cavity, the secondary cavity is connected to the liquid inlet through the first cavity, and the secondary cavity is connected to the liquid outlet through the second cavity.

[0009] As an optional technical solution for a liquid storage dryer, the main cylinder is provided with a first connecting hole and a second connecting hole at intervals on the side near the secondary cylinder. The first cavity is connected to the secondary cavity through the first connecting hole, and the second cavity is connected to the secondary cavity through the second connecting hole.

[0010] As an optional technical solution for a liquid storage dryer, one auxiliary cylinder is provided, or multiple auxiliary cylinders are provided around the outer periphery of the main cylinder, and each auxiliary cavity is connected to the main cavity and the liquid outlet.

[0011] As an optional technical solution for a liquid storage dryer, both the main cylinder and the auxiliary cylinder are cylindrical and their axes are parallel.

[0012] As an optional technical solution for a liquid storage dryer, it also includes a main end cap, wherein the end of the main cylinder is provided with a main opening, and the main end cap is placed on the main cylinder and closes the main opening;

[0013] And / or, it also includes a secondary end cap, wherein the end of the secondary cylinder is provided with a secondary opening, and the secondary end cap is disposed on the secondary cylinder and closes the secondary opening.

[0014] As an optional technical solution for a liquid storage dryer, an auxiliary sealing assembly is also included, which is disposed between the main cylinder and the main end cap.

[0015] As an optional technical solution for a liquid storage dryer, the main end cap is inserted into the main cylinder. The outer periphery of one end of the main end cap located in the main cylinder is provided with an annular groove. The auxiliary sealing assembly includes a sealing ring, which is embedded in the annular groove. One side of the sealing ring is attached to the bottom of the annular groove and the other side is attached to the inner wall of the main cylinder.

[0016] As an optional technical solution for a liquid storage dryer, the auxiliary sealing assembly also includes a retaining spring, and the inner wall of the main cylinder is provided with a retaining groove. The retaining spring is connected to the main end cap and engages with the retaining groove.

[0017] As an optional technical solution for a liquid storage dryer, the main cylinder includes a main cylinder and a base, the auxiliary cylinder is connected to the main cylinder, the main cylinder is provided with the main cavity, one side of the base is connected to the main cylinder, the other side of the base has an mounting plane, and the liquid inlet and the liquid outlet are disposed on the mounting plane.

[0018] Beneficial effects:

[0019] This utility model provides a liquid storage dryer, which includes a main cylinder and a secondary cylinder. The main cylinder is connected to the secondary cylinder. The main cylinder is provided with a liquid inlet and a liquid outlet. The main cylinder has a main cavity that communicates with the liquid inlet. A dehumidification module is provided in the main cavity. The secondary cylinder has a secondary cavity. One end of the secondary cavity is connected to the main cavity and the other end is connected to the liquid outlet, so that the refrigerant flows into the main cavity from the liquid inlet, is dried by the dehumidification module, enters the secondary cavity, and flows out from the liquid outlet. A dehumidification module is installed in the main cavity of the main cylinder to remove moisture from the refrigerant. A secondary cylinder is further installed on the main cylinder. After the liquid receiver dryer is installed at the installation position in the refrigeration system, the refrigerant can flow into the main cavity from the liquid inlet, be dried by the dehumidification module, and then enter the secondary cavity. The secondary cylinder is mainly used to store the dehumidified refrigerant. The refrigerant can flow out from the liquid outlet as needed. By adding a secondary cylinder on the basis of the main cylinder, more refrigerant can be stored, and the shape of the liquid receiver dryer can be changed according to the different relative positions of the main cylinder and the secondary cylinder, so that the liquid receiver dryer can be flexibly arranged and the installation position is not greatly restricted by the shape. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the liquid storage dryer provided in this embodiment of the utility model;

[0021] Figure 2 This is a first-view structural schematic diagram of the liquid storage dryer provided in this embodiment of the utility model;

[0022] Figure 3 This is a second-view structural schematic diagram of the liquid storage dryer provided in this embodiment of the present invention;

[0023] Figure 4 This is a third-view structural schematic diagram of the liquid storage dryer provided in this embodiment of the utility model;

[0024] Figure 5 This is a fourth-view structural schematic diagram of the liquid storage dryer provided in this embodiment of the utility model;

[0025] Figure 6 This is a structural schematic diagram of the liquid storage dryer provided in the embodiment of this utility model from the fifth perspective.

[0026] In the picture:

[0027] 1. Main cylinder; 10a. Main cylinder; 10b. Base; 101. Mounting plane; 102. Threaded hole; 11. Main cavity; 111. First cavity; 112. Second cavity; 12. First connecting hole; 13. Second connecting hole; 14. Liquid inlet; 15. Liquid outlet;

[0028] 2. Secondary cylinder; 21. Secondary cavity; 4. Dehumidification module; 5. Isolation component; 6. Main end cover; 6a. First main end cover; 6b. Second main end cover; 7. Secondary end cover; 7a. First secondary end cover; 7b. Second secondary end cover; 8. Auxiliary sealing assembly; 81. Sealing ring; 82. Snap ring. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0033] like Figures 1 to 4As shown, this embodiment provides a liquid storage dryer, which includes a main cylinder 1 and a secondary cylinder 2. The main cylinder 1 is connected to the secondary cylinder 2. The main cylinder 1 is provided with a liquid inlet 14 and a liquid outlet 15. The main cylinder 1 has a main cavity 11 that communicates with the liquid inlet 14. The main cavity 11 is provided with a dehumidification module 4. The secondary cylinder 2 has a secondary cavity 21. One end of the secondary cavity 21 is connected to the main cavity 11 and the other end is connected to the liquid outlet 15, so that the refrigerant flows into the main cavity 11 from the liquid inlet 14, is dried by the dehumidification module 4, enters the secondary cavity 21, and flows out from the liquid outlet 15.

[0034] A dehumidification module 4 is installed inside the main cavity 11 of the main cylinder 1 to remove moisture from the refrigerant. A secondary cylinder 2 is further installed on the main cylinder 1. After the liquid receiver dryer is installed at the installation position of the refrigeration system, the refrigerant can flow into the main cavity 11 from the liquid inlet 14, and after being dried by the dehumidification module 4, it enters the secondary cavity 21. The secondary cylinder 2 is mainly used to store the dehumidified refrigerant. The refrigerant can flow out from the liquid outlet 15 as needed. By further adding the secondary cylinder 2 on the basis of the main cylinder 1, more refrigerant can be stored, and the shape of the liquid receiver dryer can be changed according to the different relative positions of the main cylinder 1 and the secondary cylinder 2, so that the liquid receiver dryer can be flexibly arranged and the installation position is not greatly restricted by the shape.

[0035] Optionally, multiple auxiliary cylinders 2 are arranged around the outer periphery of the main cylinder 1, and each auxiliary cylinder 21 is connected to the main cavity 11 and the liquid outlet 15. Multiple auxiliary cylinders 2 can be arranged around the outer periphery of the main cylinder 1 according to the actual installation space and refrigerant storage needs, so that each auxiliary cylinder 2 can store refrigerant. The arrangement is flexible and can be adapted to different installation spaces.

[0036] Optionally, both the main cylinder 1 and the auxiliary cylinder 2 are cylindrical and their axes are parallel. By making the main cylinder 1 and the auxiliary cylinder 2 cylindrical, compared with a cuboid cylinder, the compressive strength is greater with the same amount of material, the space occupied is smaller with the same internal volume, and the level of lightweighting is better.

[0037] Optionally, the main cylinder 1 includes a main cylinder 10a and a base 10b, and the auxiliary cylinder 2 is connected to the main cylinder 10a. The main cylinder 10a has a main cavity 11. One side of the base 10b is connected to the main cylinder 10a, and the other side of the base 10b has a mounting plane 101. The liquid inlet 14 and the liquid outlet 15 are disposed on the mounting plane 101. By setting the main cylinder 10a and the base 10b, and placing the liquid inlet 14 and the liquid outlet 15 on the mounting plane 101 of the base 10b away from the main cylinder 10a, it helps to ensure installation stability and facilitates the connection of the liquid inlet 14 and the liquid outlet 15 to the corresponding pipelines of the refrigeration system.

[0038] In this embodiment, one auxiliary cylinder 2 is provided; both the main cylinder 10a and the auxiliary cylinder 2 are cylindrical; the main cylinder 10a, the auxiliary cylinder 2, and the base 10b are arranged side by side; the side of the base 10b closest to the main cylinder 10a has an arc surface that matches the main cylinder 10a. In other embodiments, the base 10b may be omitted, and the inlet 14 and outlet 15 may be directly provided on the main cylinder 10a; and both the main cylinder 10a and the auxiliary cylinder 2 may be configured as cylinders with an elliptical cross-section; the main cylinder 10a and the auxiliary cylinder 2 are not limited to being arranged on the same plane, but may also be arranged at a certain angle.

[0039] In this embodiment, the mounting plane 101 of the base 10b is also provided with a threaded hole 102; when the liquid storage dryer is installed, it is fastened to the installation position of the refrigeration system through the threaded hole 102 on the base 10b by bolts.

[0040] Furthermore, the main cylinder 10a is equipped with an isolation element 5, which divides the main cavity 11 into a first cavity 111 and a second cavity 112. The dehumidification module 4 is located in the first cavity 111. The secondary cavity 21 is connected to the liquid inlet 14 through the first cavity 111 and to the liquid outlet 15 through the second cavity 112. By setting the isolation element 5 to divide the main cavity 11 into the first cavity 111 and the second cavity 112, the flow path of the refrigerant is restricted. The refrigerant is dried by the dehumidification module 4 in the first cavity 111 before entering the secondary cavity 21, and then flows from the secondary cavity 21 into the second cavity 112 and out through the liquid outlet 15. This ensures the drying effect of the refrigerant and prevents the refrigerant from bypassing the dehumidification module 4 and directly entering the secondary cavity 21, which would cause dehumidification failure.

[0041] In this embodiment, the spacer 5 is a sealing gasket, which is made of pressure-resistant sealing material or elastic sealing material; the sealing gasket can be fixed in the main cylinder 10a by means of threaded engagement, groove or other fixing methods.

[0042] Specifically, the main cylinder 10a has a first connecting hole 12 and a second connecting hole 13 spaced apart on the side near the auxiliary cylinder 2. The first cavity 111 is connected to the auxiliary cavity 21 through the first connecting hole 12, and the second cavity 112 is connected to the auxiliary cavity 21 through the second connecting hole 13. By setting individual connecting holes for refrigerant flow, the position, diameter, and extension direction of the connecting holes can be flexibly set according to actual needs, which facilitates guiding the refrigerant or controlling the refrigerant flow rate. Correspondingly, if multiple auxiliary cylinders 2 are set, corresponding first connecting holes 12 and second connecting holes 13 need to be set on the main cylinder 10a, so that the auxiliary cavity 21 of each auxiliary cylinder 2 is connected to the main cavity 11 and the liquid outlet 15.

[0043] In this embodiment, the base 10b, main cylinder 10a, and auxiliary cylinder 2 are an integral structure; the first connecting hole 12 is located near the top of the main cylinder 10a, and the second connecting hole 13 is located near the bottom of the main cylinder 10a; the main cylinder 10a and the auxiliary cylinder 2 extend vertically, the first connecting hole 12 extends upward at an angle towards the side near the auxiliary cylinder 2, and the second connecting hole 13 extends horizontally. By setting the inclined first connecting hole 12, the refrigerant, after being dried by the dehumidification module 4, reaches a specific liquid level before gradually overflowing into the auxiliary cavity 21, forcing the refrigerant to fully contact the dehumidification module 4 and improving the moisture adsorption efficiency. It is understood that the dehumidification module 4 can be a molecular sieve desiccant or a filter screen, and the specific installation and fixing method of the dehumidification module 4 can refer to the design of existing technology.

[0044] Furthermore, the liquid storage dryer also includes a main end cap 6, and the main cylinder 1 has a main opening at its end. The main end cap 6 covers the main cylinder 1 and closes the main opening.

[0045] Optionally, the liquid storage dryer also includes a secondary end cap 7, and the secondary cylinder 2 has a secondary opening at its end. The secondary end cap 7 covers the secondary cylinder 2 and closes the secondary opening.

[0046] See Figure 5 and Figure 6 In this embodiment, a main end cap 6 is provided at both ends of the main cylinder 10a, and a secondary end cap 7 is provided at both ends of the secondary cylinder 2; the two main end caps 6 are respectively a first main end cap 6a and a second main end cap 6b, and the structures of the first main end cap 6a and the second main end cap 6b can be the same or different; the two secondary end caps 7 are respectively a first secondary end cap 7a and a second secondary end cap 7b, and the structures of the first secondary end cap 7a and the second secondary end cap 7b can be the same or different.

[0047] By providing an opening at the end of the cylinder and sealing it with an end cap, the cylinder and end cap can be manufactured separately. This allows the cylinder and end cap to be assembled together after the internal parts (e.g., dehumidification module 4) are installed. In other embodiments, the end cap can be omitted, and the cylinder can be directly molded into a seamless structure in one piece to achieve overall sealing. In other embodiments, a desiccant or filter can also be further provided in the secondary cavity 21 of the secondary cylinder 2.

[0048] To ensure a tight seal, the liquid receiver dryer also includes an auxiliary sealing assembly 8, which is positioned between the main cylinder 1 and the main end cap 6. By providing the auxiliary sealing assembly 8, the installation positions of the main cylinder 1 and the main end cap 6 are restricted, further ensuring a tight seal. Correspondingly, a similar auxiliary sealing assembly can also be provided between the secondary cylinder 2 and the secondary end cap 7.

[0049] Specifically, the main end cap 6 is partially inserted into the main cylinder 1. One end of the main end cap 6 located inside the main cylinder 1 has an annular groove on its outer periphery. The auxiliary sealing assembly 8 includes a sealing ring 81, which is embedded in the annular groove. One side of the sealing ring 81 is attached to the bottom of the annular groove, and the other side is attached to the inner wall of the main cylinder 1. By setting the sealing ring 81 and the corresponding annular groove, refrigerant leakage is effectively blocked through contact pressure.

[0050] Optionally, the auxiliary sealing assembly 8 also includes a retaining spring 82. The inner wall of the main cylinder 10a has a retaining groove, and the retaining spring 82 is connected to the main end cap 6 and engages with the retaining groove. By providing the retaining spring 82, the retaining spring 82 elastically deforms and engages with the retaining groove, thus limiting the position between the main cylinder 10a and the main end cap 6, preventing axial relative movement, and also indirectly positioning the sealing ring 81 to ensure sealing performance. In this embodiment, the sealing ring 81 and the retaining spring 82 are spaced apart along the axial direction of the main cylinder 10a, with the sealing ring 81 located on the side of the retaining spring 82 facing the main cavity 11. In other embodiments, the main cylinder 10a and the main end cap 6, and the auxiliary cylinder 2 and the auxiliary end cap 7, can also be sealed by threaded connection or welding.

[0051] The following is the specific usage process of the liquid receiver dryer:

[0052] During operation, the refrigerant flows into the first cavity 111 of the main cylinder 10a through the liquid inlet 14. The isolation member 5 separates the liquid inlet 14 and the liquid outlet 15, ensuring that after the refrigerant flows into the liquid inlet 14 from the side of the isolation member 5, it first flows through the dehumidification module 4 inside the first cavity 111. The dehumidification module 4 absorbs water and dries the refrigerant. Then, it enters the secondary cavity 21 of the secondary cylinder 2 through the first connecting hole 12, and then flows into the second cavity 112 from the second connecting hole 13. At this time, the refrigerant flows from the other side of the isolation member 5 to the liquid outlet 15 and enters the next component in the refrigeration system.

[0053] Compared to traditional cylindrical liquid storage dryers, which can only expand their internal volume radially when necessary, this embodiment increases the internal volume of the liquid storage dryer laterally by adding a secondary cylinder 2 to the main cylinder 1 and improving the external shape of the liquid storage dryer. This allows for a change in the arrangement of the liquid storage dryer without increasing material usage, reducing internal volume, or lowering pressure resistance, resulting in a more compact and flexible arrangement with less installation space required.

[0054] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A liquid reservoir dryer characterized by, The device includes a main cylinder (1) and a secondary cylinder (2). The main cylinder (1) is connected to the secondary cylinder (2). The main cylinder (1) is provided with a liquid inlet (14) and a liquid outlet (15). The main cylinder (1) has a main cavity (11) that communicates with the liquid inlet (14). The main cavity (11) is provided with a dehumidification module (4). The secondary cylinder (2) is provided with a secondary cavity (21). One end of the secondary cavity (21) is connected to the main cavity (11) and the other end is connected to the liquid outlet (15), so that the refrigerant flows into the main cavity (11) from the liquid inlet (14), is dried by the dehumidification module (4), enters the secondary cavity (21), and flows out from the liquid outlet (15).

2. The liquid reservoir dryer of claim 1, wherein, The main cylinder (1) is provided with an isolation member (5), which divides the main cavity (11) into a first cavity (111) and a second cavity (112). The dehumidification module (4) is located in the first cavity (111). The secondary cavity (21) is connected to the liquid inlet (14) through the first cavity (111), and the secondary cavity (21) is connected to the liquid outlet (15) through the second cavity (112).

3. The liquid reservoir dryer of claim 2, wherein, The main cylinder (1) is provided with a first connecting hole (12) and a second connecting hole (13) at intervals on the side near the secondary cylinder (2). The first cavity (111) is connected to the secondary cavity (21) through the first connecting hole (12), and the second cavity (112) is connected to the secondary cavity (21) through the second connecting hole (13).

4. The liquid reservoir dryer of claim 1, wherein, There is one sub-cylinder (2), or multiple sub-cylinders (2) are arranged around the outer periphery of the main cylinder (1), and each sub-cavity (21) is connected to the main cavity (11) and the liquid outlet (15).

5. The solution reservoir of claim 1, wherein Both the main cylinder (1) and the secondary cylinder (2) are cylindrical and their axes are parallel.

6. The liquid reservoir dryer of claim 1, wherein, It also includes a main end cap (6), the main cylinder (1) has a main opening at the end, and the main end cap (6) covers the main cylinder (1) and closes the main opening; And / or, it also includes a secondary end cap (7), wherein the secondary cylinder (2) has a secondary opening at its end, and the secondary end cap (7) covers the secondary cylinder (2) and closes the secondary opening.

7. The liquid reservoir dryer of claim 6, wherein, It also includes an auxiliary sealing assembly (8), which is disposed between the main cylinder (1) and the main end cap (6).

8. The liquid reservoir dryer of claim 7, wherein, The main end cap (6) is partially inserted into the main cylinder (1). The outer periphery of one end of the main end cap (6) located inside the main cylinder (1) is provided with an annular groove. The auxiliary sealing assembly (8) includes a sealing ring (81). The sealing ring (81) is embedded in the annular groove. One side of the sealing ring (81) is attached to the bottom of the annular groove and the other side is attached to the inner wall of the main cylinder (1).

9. The liquid reservoir dryer of claim 8, wherein, The auxiliary sealing assembly (8) also includes a retaining ring (82). The inner wall of the main cylinder (1) is provided with a retaining groove. The retaining ring (82) is connected to the main end cap (6) and engages with the retaining groove.

10. The liquid reservoir dryer of any one of claims 1-9, wherein, The main cylinder (1) includes a main cylinder (10a) and a base (10b). The auxiliary cylinder (2) is connected to the main cylinder (10a). The main cylinder (10a) is provided with the main cavity (11). One side of the base (10b) is connected to the main cylinder (10a), and the other side of the base (10b) has an mounting plane (101). The liquid inlet (14) and the liquid outlet (15) are disposed on the mounting plane (101).