Dryer assembly and air suspension system

Abstract

The invention discloses a dryer assembly and an air suspension system, the dryer assembly is applied to the air suspension system, the dryer assembly comprises at least one barrel, the barrel is of a hollow cylindrical structure with the two ends sealed, a drying cavity is formed in the barrel, and a drying agent is contained in the drying cavity; the first air vent and the second air vent are communicated with the barrel and are close to the two ends of the barrel respectively, the first air vent is communicated with an air suspension system, the second air vent is communicated with the external environment, and an airflow channel is formed among the first air vent, the drying cavity and the second air vent; the heating assembly is located in the drying cavity; the throttling valve is located on the air flow path between the first air vent and the drying cavity and used for controlling the air flow rate; when the dryer assembly is in a regeneration state, gas passes through the gas flow channel, is accelerated by the throttling valve and is heated by the heating assembly, and then water vapor in the drying agent is discharged into the external environment. The regeneration effect of the dryer can be remarkably improved.

Description

Technical Field

[0001] This application belongs to the technical field of dryers, and particularly relates to a dryer assembly and an air suspension system. Background Art

[0002] With the rapid development of new energy vehicles, air medium still plays an important role in some key systems, such as air suspension systems. To ensure the stable operation of the air suspension system, the dryness of its internal environment is crucial. A dryer must be equipped in the air circuit of the air suspension system to absorb moisture in the air circuit, effectively avoiding problems such as blockage and rust caused by moisture, and ensuring that the system can operate stably and efficiently for a long time.

[0003] Modern high-performance air suspension systems usually adopt electronically controlled fully automatic regenerative dryers, which can restore the drying ability in a timely manner without relying on manual intervention. However, two conditions need to be met simultaneously during the regeneration of the dryer: one is the impact of high-speed air flow to carry away the moisture adsorbed on the molecular sieve; the other is to provide sufficient heat to promote the desorption of moisture. The current dryers are difficult to meet these two conditions simultaneously in design, resulting in poor regeneration effect after the molecular sieve absorbs moisture and being unable to fully restore its ability to adsorb water vapor. Summary of the Invention

[0004] The embodiments of this application provide a dryer assembly and an air suspension system, which can significantly improve the regeneration effect of the dryer and extend its service life.

[0005] In a first aspect, the embodiments of this application provide a dryer assembly applied to an air suspension system. The dryer assembly includes:

[0006] At least one cylinder, the cylinder is a hollow cylindrical structure sealed at both ends, and a drying chamber is formed inside it, and a desiccant is accommodated in the drying chamber;

[0007] A first vent and a second vent connected to the cylinder. The first vent and the second vent are respectively adjacent to both ends of the cylinder. The first vent is connected to the air suspension system, and the second vent is connected to the external environment. An air flow path is formed among the first vent, the drying chamber, and the second vent;

[0008] A heating component, the heating component is located in the drying chamber;

[0009] A throttle valve, the throttle valve is located on the air flow path between the first vent and the drying chamber and is used to control the gas flow rate;

[0010] Wherein, when the dryer assembly is in the regeneration state, the gas in the air suspension system passes through the air flow path, is accelerated by the throttle valve and heated by the heating component, and then the water vapor in the desiccant is discharged to the external environment.

[0011] In some feasible embodiments, the throttle valve includes a valve seat, in which a throttle baffle and a valve core are provided. The throttle baffle is adjacent to the drying chamber, and the valve core is adjacent to the first air vent.

[0012] A movable valve ball is provided between the throttle baffle and the valve core. The valve ball is used to adjust the flow rate of the gas passing through the throttle valve in the regeneration state to be higher than that in the normal state.

[0013] In some feasible embodiments, the throttle baffle is provided with a first throttle hole and a second throttle hole. The first throttle hole is arranged concentrically with the throttle baffle, and the diameter of the first throttle hole is larger than that of the second throttle hole.

[0014] The diameter of the valve ball is larger than that of the first throttle hole. In the regeneration state, the valve ball moves under the action of the air flow and blocks the first throttle hole, thereby reducing the flow area of the air flow path between the throttle valve and the drying chamber and increasing the gas flow rate.

[0015] In some feasible embodiments, the heating component extends along the axis of the cylinder body. The desiccant is evenly distributed between the circumferential direction of the heating component and the cylinder body. At least one threaded hole is provided at the first end of the cylinder body. The heating component is connected to at least one threaded hole through at least one bolt, so as to be fixedly installed on the first end, and the first end is the end of the cylinder body adjacent to the first air vent.

[0016] In some feasible embodiments, the heating component includes an electric heating element, a temperature sensor and an integrated wire harness.

[0017] A connector is installed at the first end of the cylinder body. The integrated wire harness is plugged into the connector to realize the electrical connection between the heating component and the external circuit.

[0018] In some feasible embodiments, a first retaining ring and a second retaining ring are provided in the drying chamber. The first retaining ring and the second retaining ring are respectively adjacent to the first air vent and the second air vent, and the desiccant is filled between the first retaining ring and the second retaining ring.

[0019] At least one air vent is provided on the first retaining ring and the second retaining ring for gas flow.

[0020] In some feasible embodiments, a first filter assembly is attached to the side of the first retaining ring facing the second retaining ring, and a second filter assembly is attached to the side of the second retaining ring facing the first retaining ring. The first filter assembly and the second filter assembly are used to adsorb the oil stains in the gas entering the dryer assembly.

[0021] In some feasible embodiments, an elastic member is further included. The two ends of the elastic member are respectively connected to the inner wall of the second end of the cylinder body and the second retaining ring, and are used to apply an axial pressing force to the second retaining ring. The second end is the end of the cylinder body adjacent to the second air vent.

[0022] In some feasible embodiments, a limiting boss is further provided at the first end of the cylinder body for restricting the movement of the first retaining ring.

[0023] In a second aspect, an embodiment of the present application provides an air suspension system, including the dryer assembly of any one of the above.

[0024] Function and effect of the invention

[0025] A dryer assembly and an air suspension system according to an embodiment of the present application, the dryer assembly includes: at least one cylinder body, the cylinder body is a hollow cylindrical structure sealed at both ends, a drying cavity is formed inside it, and a desiccant is accommodated in the drying cavity; a first ventilation port and a second ventilation port communicated with the cylinder body, the first ventilation port and the second ventilation port are respectively adjacent to both ends of the cylinder body, the first ventilation port is communicated with the air suspension system, the second ventilation port is communicated with the external environment, and an air flow path is formed among the first ventilation port, the drying cavity and the second ventilation port; a heating component, the heating component is located in the drying cavity; a throttle valve, the throttle valve is located on the air flow path between the first ventilation port and the drying cavity for controlling the gas flow rate; wherein, when the dryer assembly is in the regeneration state, the gas in the air suspension system passes through the air flow path, is accelerated by the throttle valve and heated by the heating component, and then the water vapor in the desiccant is discharged to the external environment. Thus, in the embodiment of the present application, by providing a heating component and a throttle valve in the dryer assembly, the throttle valve can be used to accelerate the gas to generate a high-speed air flow impact to more effectively remove the water in the desiccant. At the same time, the heating component can provide sufficient heat for the desiccant to promote the two key conditions of water desorption, significantly improving the regeneration effect of the dryer and extending its service life, thereby enhancing the reliability of the air suspension system.

[0026] Other features and advantages of the present invention will be described in the following description, and some will be obvious from the description or understood by implementing the present invention. The objectives and other advantages of the present invention are achieved and obtained by the structures specifically pointed out in the description, the claims and the drawings.

[0027] To make the above objectives, features and advantages of the present invention more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, makes the following detailed description. Description of the drawings

[0028] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art.

[0029] Figure 1 is a schematic structural diagram of the dryer assembly provided by the embodiment of the present application;

[0030] Figure 2It is a schematic cross-sectional structure diagram of the dryer assembly provided by an embodiment of the present application;

[0031] Figure 3 It is a schematic side cross-sectional view of the dryer assembly provided by an embodiment of the present application;

[0032] Figure 4 It is a schematic structural diagram of the throttle valve provided by an embodiment of the present application;

[0033] In the figure: 1, cylinder body; 10, drying chamber; 101, desiccant; 102, first retaining ring; 103, second retaining ring; 104, first filter assembly; 105, second filter assembly; 11, first vent port; 12, second vent port; 2, heating assembly; 3, throttle valve; 31, valve seat; 32, throttle baffle; 33, valve core; 34, valve ball; 321, first throttle hole; 322, second throttle hole; 4, connector; 5, elastic member. Detailed implementation manners

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that such an order can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0036] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0037] To solve the problems of the prior art, an embodiment of the present application provides a dryer assembly and an air suspension system. First, the dryer assembly provided by the embodiment of the present application will be introduced below.

[0038] Figures 1 to 3 The structural diagram and cross-sectional diagram of the dryer assembly provided by the embodiment of the present application are respectively shown. As Figures 1 to 3As shown in the figure, a dryer assembly is applied to an air suspension system. The dryer assembly includes:

[0039] Two cylinders 1, a first ventilation port 11 and a second ventilation port 12 connected to the cylinder 1, a heating component 2, and a throttle valve 3. The cylinder 1 is a hollow cylindrical structure sealed at both ends, and a drying chamber 10 is formed inside it. A desiccant 101 is accommodated in the drying chamber 10. Specifically, as Figures 1 to 3 shown, the two cylinders 1 are arranged in parallel in the axial direction and are rigidly connected by an intermediate connecting component to form an integral structure. The desiccant 101 is made of molecular sieve material and is filled in the drying chamber 10 in granular form.

[0040] It should be noted that the cylinder 1 is used to accommodate the desiccant 101 and provide necessary structural support for the working process of the dryer. The specific implementation manner thereof includes but is not limited to the cylindrical structure and the double-cylinder configuration provided in the embodiments of the present application. The dryer assembly shown in this embodiment is only for illustrative purposes and does not limit the specific number, shape, and arrangement manner of the cylinder 1. In practical applications, the number of cylinders 1 can be set to one or more according to requirements, and its shape can also be a square column, a polygonal column, or other special-shaped structures. The desiccant 101 is used to remove moisture in the gas through adsorption during normal operation, so as to provide dry air for the automotive air suspension system, and can prevent problems such as component corrosion, unstable air pressure, and performance degradation caused by moisture, ensuring the long-term stability and reliability of the air suspension system. In addition to molecular sieve, the desiccant 101 can also be silica gel, activated alumina, anhydrous calcium chloride, anhydrous magnesium sulfate, etc., which have good moisture absorption performance, and can be selected according to different application scenarios and requirements in other embodiments.

[0041] The first ventilation port 11 and the second ventilation port 12 are respectively adjacent to both ends of the cylinder 1. The first ventilation port 11 is connected to the air suspension system, and the second ventilation port 12 is connected to the external environment. An air flow path is formed among the first ventilation port 11, the drying chamber 10, and the second ventilation port 12. In the embodiments of the present application, the first ventilation port 11 and the second ventilation port 12 are opened on the above-mentioned intermediate connecting component. During the regeneration operation of the dryer, after the gas enters the dryer through the first ventilation port 11, it can be divided into two paths and enter the two drying chambers 10 simultaneously. After stripping the water vapor in the desiccant 101, it is then discharged from the second ventilation port 12 uniformly, so as to realize the regeneration of the desiccant 101.

[0042] The heating component 2 is located within the drying chamber 10 and is used to directly heat the desiccant 101. Under high-temperature conditions, the moisture in the desiccant 101 will change from the adsorbed state to the gaseous state due to the increase in temperature, making it easier to be carried away by the air flow, effectively removing the moisture in the desiccant 101, restoring its adsorption capacity, and thus improving the regeneration efficiency of the dryer. In the embodiment of the present application, the above-mentioned heating component 2 is selected as a PTC heater, and one PTC heater is installed in each of the two drying chambers 10. When the dryer is in the regeneration state, the gas in the air suspension system enters the drying chamber 10 from the first vent 11, carries away the moisture in the desiccant 101, and is discharged to the external environment through the second vent, realizing the regeneration of the desiccant. At the same time, the PTC heater will heat the desiccant 101. Under high-temperature conditions, the moisture in the desiccant 101 will change from the adsorbed state to the gaseous state due to the increase in temperature, enabling the gas to more effectively carry away the moisture in the desiccant 101 and be discharged to the external environment through the second vent 12, thereby improving the regeneration efficiency of the dryer. In other embodiments, in addition to the PTC heater, the above-mentioned heating component 2 can also be selected from various other types of heating elements, such as heating wires, infrared heaters, hot air heating devices, etc.

[0043] The throttle valve 3 is located on the gas flow path between the first vent 11 and the drying chamber 10 and is used to control the gas flow rate. Specifically, when the dryer is in the regeneration state, the gas enters the throttle valve 3 from the first vent 11, becomes a high-speed air flow after being adjusted and accelerated by the throttle valve 3, and then enters the drying chamber 10 to quickly carry away the water vapor released from the desiccant 101, thereby improving the regeneration efficiency. When the dryer is in the normal working state, the gas flows from the drying chamber 10 to the throttle valve 3 and then is directly discharged from the first vent 11. Therefore, in the regeneration state, the gas flow rate through the throttle valve 3 is significantly higher than that in the normal working state.

[0044] An air dryer assembly according to an embodiment of the present application includes: at least one cylinder, which is a hollow cylindrical structure with sealed ends, and a drying chamber is formed inside it, and a desiccant is accommodated in the drying chamber; a first vent and a second vent communicating with the cylinder, the first vent and the second vent are respectively adjacent to both ends of the cylinder, the first vent is communicated with the air suspension system, the second vent is communicated with the external environment, and an air flow path is formed among the first vent, the drying chamber and the second vent; a heating component, which is located in the drying chamber; a throttle valve, which is located on the air flow path between the first vent and the drying chamber and is used to control the gas flow rate; wherein, when the air dryer assembly is in the regeneration state, the gas in the air suspension system passes through the air flow path, is accelerated by the throttle valve and heated by the heating component, and then the water vapor in the desiccant is discharged to the external environment. Thus, in the embodiment of the present application, by arranging the heating component and the throttle valve in the air dryer assembly, the throttle valve can be used to accelerate the gas, generate a high-speed air flow impact, so as to more effectively take away the moisture in the desiccant. At the same time, the heating component can provide sufficient heat for the desiccant to promote the desorption of moisture, significantly improving the regeneration effect of the air dryer and extending its service life, and further enhancing the reliability of the air suspension system.

[0045] Figure 4 The structural schematic diagram of the throttle valve provided by the embodiment of the present application is shown, as Figure 4 shown, in the embodiment of the present application, the throttle valve 3 includes a valve seat 31, a throttle baffle 32 and a valve core 33 are arranged in the valve seat 31, the throttle baffle 32 is adjacent to the drying chamber 10, and the valve core 33 is adjacent to the first vent 11. In the regeneration state of the air dryer, the gas enters the throttle valve 3 through the first vent 11. In the throttle valve 3, the gas first passes through the valve core 33, then flows to the throttle baffle 32, and finally enters the drying chamber 10. A movable valve ball 34 is arranged between the throttle baffle 32 and the valve core 33, and the valve ball 34 is used to adjust the flow rate of the gas passing through the throttle valve 3 in the regeneration state to be higher than the flow rate in the normal state.

[0046] Specifically, a first throttle hole 321 and a second throttle hole 322 are formed in the throttle baffle 32. The first throttle hole is arranged concentrically with the throttle baffle 32, and the diameter of the first throttle hole 321 is larger than that of the second throttle hole 322; the diameter of the valve ball 34 is larger than that of the first throttle hole 321. During the regeneration process of the drying chamber, the air flow will exert a force on the valve ball 34, pushing the valve ball 34 to move towards the throttle baffle 32. When the valve ball 34 moves to the position of the throttle baffle 32, since the diameter of the valve ball 34 is larger than that of the first throttle hole 321, the valve ball 34 will block the first throttle hole 321, and the gas can only continue to flow through the second throttle hole 322. Also, because the diameter of the second throttle hole 322 is smaller than that of the first throttle hole 321, the flow area of the gas passage between the throttle valve 3 and the drying chamber 10 is reduced, forcing the gas flow rate to increase, thus meeting the requirement for high gas flow rate in the regeneration state, and further improving the regeneration efficiency of the dryer.

[0047] In the embodiment of the present application, the heating assembly 2 extends along the axis of the cylinder 1, and the desiccant 101 is evenly distributed between the circumferential direction of the heating assembly 2 and the cylinder 1, so that the heating assembly 2 can heat the desiccant 101 in the entire drying chamber 10 more evenly, thereby improving the heating efficiency and the desiccant regeneration effect. At least one threaded hole is formed in the first end of the cylinder 1, and the heating assembly 2 is connected to at least one threaded hole through at least one bolt, so as to be fixedly installed on the first end. This connection and installation method is not only simple and reliable, but also convenient for installation and maintenance. Among them, the first end is the end of the cylinder 1 adjacent to the first air vent 11.

[0048] In the embodiment of the present application, the heating assembly 2 includes an electric heating element, a temperature sensor and an integrated wire harness. Among them, the electric heating element, as the core component, is responsible for efficiently converting electrical energy into heat energy and directly heating the desiccant 101 to promote the rapid evaporation of the adsorbed water at high temperature, thereby realizing the regeneration of the desiccant. The temperature sensor is used to monitor the temperature change in the drying chamber 10 in real time to ensure that the heating process is always under precise control, and to avoid affecting the regeneration effect or damaging the desiccant due to too high or too low temperature. The integrated wire harness is used to connect the electric heating element and the temperature sensor to the external circuit to ensure that the heating assembly 2 can work stably and reliably. To realize the electrical connection between the heating assembly 2 and the external circuit, a connector 4 is installed at the first end of the cylinder 1, and the integrated wire harness is connected to the external power supply and the control system by plugging into the connector 4.

[0049] In the embodiment of the present application, a first retaining ring 102 and a second retaining ring 103 are provided in the drying chamber 10. The first retaining ring 102 and the second retaining ring 103 are adjacent to the first vent 11 and the second vent 12 respectively. The desiccant 101 is filled between the first retaining ring 102 and the second retaining ring 103. The filling area of the desiccant 101 is restricted by the first retaining ring 102 and the second retaining ring 103 to form a stable drying area, preventing the desiccant 101 from shifting or aggregating during the gas flow process, and ensuring the uniformity and stability of the drying process. In addition, at least one vent hole is provided on both the first retaining ring 102 and the second retaining ring 103. These vent holes provide a channel for the gas to flow through, enabling the gas to smoothly pass through the drying chamber 10 and realizing an efficient drying and regeneration process.

[0050] Furthermore, in the embodiment of the present application, a first filter assembly 104 is adhesively disposed on the side of the first retaining ring 102 facing the second retaining ring 10, and a second filter assembly 105 is adhesively disposed on the side of the second retaining ring 103 facing the first retaining ring 102. The first filter assembly 104 and the second filter assembly 105 are used to adsorb the oil stains in the gas entering the dryer assembly, thereby preventing the oil stains from entering the drying chamber 10, avoiding negative impacts on the adsorption performance of the desiccant 101, improving the service life and efficiency of the desiccant 101, and ensuring the stable performance of the dryer during long-term operation.

[0051] Furthermore, in the embodiment of the present application, a limiting boss is further provided at the first end of the cylinder body 1 for restricting the movement of the first retaining ring 102. Specifically, the limiting boss is located inside the cylinder body 1 near the first vent 11, and its shape and size match those of the first retaining ring 102, and it can closely fit the outer side of the first retaining ring 102. The limiting boss can prevent the first retaining ring 102 from axially displacing under external forces such as gas flow or mechanical vibration, thereby ensuring that the first retaining ring 102 always maintains a fixed position in the drying chamber 10.

[0052] In the embodiment of the present application, an elastic member 5 is further included in the dryer assembly. The two ends of the elastic member 5 are respectively connected to the inner wall of the second end of the cylinder body 1 and the second retaining ring 103 for applying an axial pressing force to the second retaining ring 103. Through the pressing action of the elastic member 5, it can ensure that the second retaining ring 103 remains stable during the operation of the dryer and prevent loosening caused by gas flow or other external forces. Wherein, the second end is the end of the cylinder body 1 adjacent to the second vent 12.

[0053] Combined with the dryer assembly in the above embodiments, the embodiment of the present application can provide an air suspension system, and the air suspension system includes the dryer assembly as described in any one of the above.

[0054] In this application, unless otherwise clearly defined and limited, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0055] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0056] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification. The above-described embodiments only represent several implementation manners of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. Therefore, the protection scope of this patent application shall be subject to the appended claims. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can still be made, and these all belong to the protection scope of this application.

Claims

1. A dryer assembly, characterized in that, Applied to an air suspension system, the dryer assembly includes: At least one cylinder body (1), the cylinder body (1) is a hollow cylindrical structure sealed at both ends, and a drying chamber (10) is formed inside it, and a desiccant (101) is accommodated in the drying chamber; A first vent port (11) and a second vent port (12) connected to the cylinder body (1), the first vent port (11) and the second vent port (12) are respectively adjacent to both ends of the cylinder body (1), the first vent port (11) is connected to the air suspension system, the second vent port (12) is connected to the external environment, and an air flow path is formed among the first vent port (11), the drying chamber (10) and the second vent port (12); A heating component (2), the heating component (2) is located in the drying chamber (10); A throttle valve (3), the throttle valve (3) is located on the air flow path between the first vent port (11) and the drying chamber (10) and is used to control the gas flow rate; Wherein, when the dryer assembly is in the regeneration state, the gas in the air suspension system passes through the air flow path, is accelerated by the throttle valve (3) and heated by the heating component (2), and then the water vapor in the desiccant (101) is discharged to the external environment.

2. The dryer assembly according to claim 1, wherein The throttle valve (3) includes a valve seat (31), a throttle baffle (32) and a valve core (33) are arranged in the valve seat (31), the throttle baffle (32) is adjacent to the drying chamber (10), and the valve core (33) is adjacent to the first vent port (11); A movable valve ball (34) is arranged between the throttle baffle (32) and the valve core (33), and the valve ball (34) is used to adjust the flow rate of the gas passing through the throttle valve (3) in the regeneration state to be higher than the flow rate in the normal state.

3. The dryer assembly according to claim 2, characterized in that, The throttle baffle (32) is provided with a first throttle hole (321) and a second throttle hole (322), the first throttle hole is arranged concentrically with the throttle baffle (32), and the diameter of the first throttle hole (321) is larger than the diameter of the second throttle hole (322); The diameter of the valve ball (34) is larger than the diameter of the first throttle hole (321). In the regeneration state, the valve ball (34) moves under the action of the air flow and blocks the first throttle hole (321), thereby reducing the flow area of the air flow path between the throttle valve (3) and the drying chamber (10) and increasing the gas flow rate.

4. The dryer assembly according to claim 1, wherein, The heating component (2) extends along the axis of the cylinder body (1), the desiccant (101) is evenly distributed between the circumference of the heating component (2) and the cylinder body (1), at least one threaded hole is opened at the first end of the cylinder body (1), and the heating component (2) is connected to the at least one threaded hole through at least one bolt, so as to be fixedly installed on the first end, and the first end is the end of the cylinder body (1) adjacent to the first vent port (11).

5. The dryer assembly according to claim 4, wherein, The heating component (2) includes an electric heating element, a temperature sensor and an integrated wire harness; A connector (4) is installed at the first end of the cylinder body (1), and the integrated wire harness is plugged into the connector (4) to realize the electrical connection between the heating component (2) and the external circuit.

6. The dryer assembly according to claim 1, characterized in that A first retaining ring (102) and a second retaining ring (103) are provided in the drying chamber (10). The first retaining ring (102) and the second retaining ring (103) are respectively adjacent to the first ventilation port (11) and the second ventilation port (12), and the desiccant (101) is filled between the first retaining ring (102) and the second retaining ring (103); At least one ventilation hole is formed in the first retaining ring (102) and the second retaining ring (103) for gas circulation.

7. The dryer assembly according to claim 6, characterized in that, A first filter assembly (104) is disposed on the side of the first retaining ring (102) facing the second retaining ring (10), and a second filter assembly (105) is disposed on the side of the second retaining ring (103) facing the first retaining ring (102). The first filter assembly (104) and the second filter assembly (105) are used to adsorb the oil stains in the gas entering the dryer assembly.

8. The dryer assembly according to claim 6, wherein, An elastic member (5) is further included. Two ends of the elastic member (5) are respectively connected to the inner wall of the second end of the cylinder body (1) and the second retaining ring (103) to apply an axial pressing force to the second retaining ring (103). The second end is the end of the cylinder body (1) adjacent to the second ventilation port (12).

9. The dryer assembly according to claim 6, characterized in that, A limiting boss is further provided at the first end of the cylinder body (1) for restricting the movement of the first retaining ring (102).

10. An air suspension system, characterized in that, The air suspension system includes the dryer assembly according to any one of claims 1-9.

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