Air suspension dryer

Abstract

The invention discloses an air suspension dryer, and aims to solve the problems that the sealing effect is poor in the heating process of a traditional dryer, and the sealing performance and the heating effect of the dryer are affected. The air suspension dryer comprises a dryer body, a heating assembly and a heat insulation cover, and the dryer body and the heating assembly are located in the heat insulation cover; the heating assembly comprises a first insulating layer, a heating resistance layer and a second insulating layer, the first insulating layer, the heating resistance layer and the second insulating layer are sequentially arranged on the outer side of the dryer body, the heating resistance layer is connected with an external circuit, and a gap is formed between the second insulating layer and the heat insulation cover. The heating assembly is directly sintered or attached to the outer side of the dryer body, and the heating function and the drying function are highly integrated. The external heating assembly can prevent the initial structure of the dryer body from being changed, and the sealing performance of the dryer body is ensured. The general arrangement design is facilitated, and meanwhile, the production and assembly cost can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile air suspension, in particular to an air suspension dryer. BACKGROUND

[0002] In the existing air suspension system, a dryer is needed to process air. Due to the small space left for passenger cars, the structure is often designed as an integral whole that cannot be replaced. In order to heat the air, a heating pipe needs to be installed on the dryer.

[0003] The existing scheme directly adds a heating pipe inside the dryer, and an external wiring harness is used to achieve temperature control. During the operation of the dryer, the internal pressure can reach 3.5MPA. After adding the heating pipe, an external wiring harness is necessarily needed, which leads to poor air tightness and affects the performance and heating effect of the dryer. SUMMARY

[0004] (I) Invention purpose

[0005] The purpose of the present application is to provide an air suspension dryer, which aims to solve the problem of poor sealing effect in the heating process of traditional dryers, which affects the sealing performance and heating effect of the dryer.

[0006] (II) Technical solution

[0007] To solve the above problems, the present application provides an air suspension dryer, which comprises a dryer main body, a heating assembly and a heat shield, wherein the dryer main body and the heating assembly are located in the heat shield.

[0008] The heating assembly comprises a first insulating layer, a heating resistor layer and a second insulating layer, which are arranged in sequence on the outside of the dryer main body. The heating resistor layer is connected with an external circuit, and a gap is provided between the second insulating layer and the heat shield.

[0009] Preferably, the air suspension dryer further comprises a connector terminal, and the heating assembly further comprises a limiting ring. The connector terminal passes through the heat shield and is connected with the limiting ring. The connector terminal is electrically connected with the heating resistor layer. The limiting ring is arranged outside the second insulating layer, and the outside of the limiting ring is connected with the inside of the heat shield.

[0010] Preferably, the heating assembly further comprises a negative temperature coefficient thermosensitive resistor, and the connector terminal is connected with the heating resistor layer through the negative temperature coefficient thermosensitive resistor.

[0011] Preferably, the outer periphery of the heat shield is formed with a protrusion, the inner side of the protrusion is formed with a limiting channel, the limiting channel is matched with the limiting ring, the protrusion is formed with a through hole, and the connector terminal is connected with the heating resistor layer through the through hole.

[0012] Preferably, the air suspension dryer further comprises a mounting assembly penetrating through the heat shield and connected with the dryer body.

[0013] Preferably, the mounting assembly is provided with a mounting hole, and the mounting hole is provided with a buffer portion.

[0014] Preferably, the dryer body comprises an air inlet assembly, a drying assembly, an air outlet assembly and a tank body, the air inlet assembly is communicated with the air outlet assembly through the drying assembly, the drying assembly is arranged in the tank body, the air inlet assembly comprises a first connector seat, and the air outlet assembly comprises a second connector seat.

[0015] Preferably, the air inlet assembly comprises a flow guide plate and a first steel mesh, the flow guide plate is formed with an air inlet hole communicated with the first connector seat, and the first steel mesh is located at the downstream side of the flow guide plate and is provided with a wind deflector corresponding to the air inlet hole.

[0016] Preferably, the air outlet assembly comprises a second steel mesh and a spring, the second steel mesh is arranged at the downstream side of the drying assembly, one end of the spring is connected with the second steel mesh, and the other end of the spring is connected with an inner arm of the tank body.

[0017] Preferably, the drying assembly is provided with a first felt plate and a second felt plate at two ends, the first felt plate is located at the downstream of the first steel mesh, and the second felt plate is located at the upstream of the second steel mesh.

[0018] (Three) beneficial effects

[0019] The above technical scheme of the present application has the following beneficial technical effects:

[0020] 1. The heating assembly is directly sintered or attached to the outer side of the dryer body, realizing high integration of the heating function and the drying function. This integrated design saves the installation space of the additional heating pipe and the complex internal wiring, making the whole device structure very compact. At the same time, the external heating assembly can avoid changing the initial structure of the dryer body, ensuring the sealing performance of the dryer body. It is convenient for overall layout design, and also helps to reduce production and assembly costs.

[0021] 2、By setting the heat shield and forming an air gap between it and the second insulating layer, the external radiation and convection loss of heat are effectively blocked. This structure makes the heat concentrated for heating the air flowing through the dryer body, greatly improves the thermal efficiency, reduces energy consumption, and meets the energy saving requirements of vehicles.

[0022] 3、The double insulation design of the first insulating layer and the second insulating layer ensures complete electrical isolation between the heating resistor layer and the metal shell of the dryer body and the external environment. Avoiding the risk of electric shock or electrical interference caused by current leakage; at the same time, the insulating layer can buffer the influence of vibration and friction on the heating resistor layer, prevent it from short circuit due to physical damage, and ensure long-term stable work of the heating assembly. In addition, the second insulating layer can also effectively protect the heating resistor layer from water vapor, dust and mechanical scratches, prolong the service life of the heating assembly, and improve the reliability of the entire dryer in harsh vehicle environments. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is an exploded view of an air suspension dryer according to the present application;

[0024] Figure 2 is a schematic view of the overall structure of an air suspension dryer according to the present application;

[0025] Figure 3 is a sectional view of an air suspension dryer according to the present application;

[0026] Figure 4 is an exploded view of a heating assembly of an air suspension dryer according to the present application;

[0027] Figure 5 is Figure 4 a schematic enlarged view of part A in

[0028] Figure 6 is a schematic view of the internal structure of an air suspension dryer according to the present application;

[0029] Figure 7 is an exploded view of a dryer body of an air suspension dryer according to the present application.

[0030] REFERENCE NUMERALS:

[0031] 1、dryer body;

[0032] 11、air inlet assembly; 111、first joint seat; 112、guide plate; 113、first steel mesh;

[0033] 12、drying assembly;

[0034] 13, air outlet assembly; 131, second joint seat; 132, second steel mesh; 133, spring;

[0035] 14, tank body; 141, upper end cover; 142, lower end cover;

[0036] 15, first felt plate;

[0037] 16, second felt plate;

[0038] 2, heating assembly; 21, first insulating layer; 22, heating resistance layer; 23, second insulating layer; 24, limiting ring; 25, negative temperature coefficient thermistor; 26, conductor layer;

[0039] 3, heat shield; 31, protruding part; 31a, limiting passage; 31b, through hole;

[0040] 4, connector terminal;

[0041] 5, mounting assembly; 5a, mounting hole; 51, first support; 52, second support;

[0042] 6, buffer part. DETAILED DESCRIPTION

[0043] To make the objectives, technical solutions and advantages of the present application clearer, further detailed description will be given below with reference to the specific embodiments and the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present application. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present application.

[0044] In the accompanying drawings, schematic diagrams of layer structures according to embodiments of the present application are shown. These diagrams are not drawn to scale, in which certain details are exaggerated for the purpose of clarity, and certain details can be omitted. The shapes of various regions, layers shown in the diagrams and their relative sizes, positional relationships are only exemplary, and in actuality, there can be deviations due to manufacturing tolerances or technical limitations, and regions / layers with different shapes, sizes, relative positions can be additionally designed by those skilled in the art according to actual needs.

[0045] Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present application.

[0046] In the description of the present application, it should be noted that the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0047] In combination withFigures 1 to 7 The application provides an air suspension dryer, which comprises a dryer body 1, a heating assembly 2 and a heat shield 3, the dryer body 1 and the heating assembly 2 are located in the heat shield 3; the heating assembly 2 comprises a first insulation layer 21, a heating resistance layer 22 and a second insulation layer 23, the first insulation layer 21, the heating resistance layer 22 and the second insulation layer 23 are sequentially arranged on the outside of the dryer body 1, the heating resistance layer 22 is connected with an external circuit, and a gap is arranged between the second insulation layer 23 and the heat shield 3.

[0048] Specifically, the dryer body 1 is used for air drying and circulation, and a drying agent is arranged in the dryer body 1 and used for adsorbing moisture in the air. The heating assembly 2 realizes electric heating conversion through the multilayer structure of the first insulation layer 21, the heating resistance layer 22 and the second insulation layer 23. The first insulation layer 21 ensures the electrical isolation between the heating resistance layer 22 and the dryer body 1 and prevents short circuit; the heating resistance layer 22 generates heat after being electrified and heats the dryer body 1; and the second insulation layer 23 protects the heating resistance layer 22 from external environment damage and avoids direct contact between the heating resistance layer 22 and the heat shield 3, so that electrical isolation is realized. The heat shield 3 wraps the dryer body 1 and the heating assembly 2, and the air gap between the heat shield 3 and the second insulation layer 23 forms a heat insulation layer, so that heat loss is reduced and heat efficiency is improved.

[0049] In the running process, an external current is input into the heating resistance layer 22. The resistance layer generates heat and heats the dryer body 1 in a heat conduction mode. The wet air in the dryer body 1 is heated and dried when flowing through.

[0050] By such a configuration, the heating assembly 2 is directly sintered or attached to the outside of the dryer body 1, realizing a high degree of integration of the heating function and the drying function. This integrated design eliminates the need for additional heating tube installation space and complex internal wiring, making the overall device structure very compact. At the same time, the external heating assembly 2 can avoid changing the original structure of the dryer body 1, ensuring the sealing performance of the dryer body 1. It is convenient for overall layout design, and also helps to reduce production and assembly costs. By setting the heat shield 3 and forming an air gap between it and the second insulation layer 23, the external radiation and convection loss of heat are effectively blocked. This structure makes the heat concentrated for heating the air flowing through the dryer body 1, greatly improving the thermal efficiency and reducing energy consumption, meeting the energy saving requirements of vehicles. The double insulation design of the first insulation layer 21 and the second insulation layer 23 ensures complete electrical isolation between the heating resistor layer 22 and the metal shell of the dryer body 1 and the external environment. Avoid the risk of electric shock or electrical interference caused by current leakage; at the same time, the insulation layer can buffer the influence of vibration and friction on the heating resistor layer 22, preventing it from short-circuiting due to physical damage, and ensuring the long-term stable operation of the heating assembly 2. In addition, the second insulation layer 23 can also effectively protect the heating resistor layer 22 from water vapor, dust and mechanical scratches, prolonging the service life of the heating assembly 2 and improving the reliability of the entire dryer in harsh vehicle environments.

[0051] Here, the specific way of external current input to the heating resistor layer 22 is not limited, which can be directly setting a conductive wire through the heat shield 3 to realize power supply of the heating resistor layer 22, or setting a connector on the heat shield 3, and the external conductive wire is quickly plugged into the connector, and the connector is electrically connected with the heating resistor layer 22. In the preferred case, the air suspension dryer further comprises a connector terminal 4, and the heating assembly 2 further comprises a limiting ring 24, the connector terminal 4 penetrates through the heat shield 3 and is connected with the limiting ring 24, the connector terminal 4 is electrically connected with the heating resistor layer 22, and the limiting ring 24 is arranged outside the second insulation layer 23, and the outside of the limiting ring 24 is connected with the inside of the heat shield 3.

[0052] Specifically, the connector terminal 4 serves as an electrical interface to connect the external power supply with the internal heating resistor layer 22. The limiting ring 24, as a ring-shaped or frame-shaped component fixed outside the second insulation layer 23, provides precise installation positioning and mechanical support for the connector terminal 4, while fixing the first insulation layer 21, the heating resistor layer 22 and the second insulation layer 23 on the dryer body 1, ensuring the integrity of the heating assembly. After penetrating through the heat shield 3 from the outside, the connector terminal 4 is electrically and mechanically connected with the limiting ring 24. The current is transmitted to the heating resistor layer 22 through the terminal. The connection between the limiting ring 24 and the inside of the heat shield 3 can be snap, thread or interference fit, etc., to ensure the stability of the electrical connection part and assist in positioning the heat shield 3.

[0053] It should be noted that the specific structure of the heat shield 3 and the limiting ring 24 is not limited here, and the gap formation method between the second insulating layer 23 and the heat shield 3 is not limited. It can be ensured that the heat shield 3 is not in contact with the second insulating layer 23 by setting multiple support points on the inner side of the heat shield 3. In a preferred case, a protruding portion 31 is formed on the outer circumferential side of the heat shield 3, the inner side of the protruding portion 31 forms a limiting channel 31a, the limiting channel 31a is matched with the limiting ring 24, the protruding portion 31 is formed with a through hole 31b, and the connector terminal 4 is connected with the heat generating resistor layer 22 through the through hole 31b.

[0054] Specifically, the protruding portion 31 is a structure that protrudes outward on the heat shield 3, used to accommodate other structures of the heat generating assembly, and at the same time provides a mounting and positioning basis for the connector terminal 4. The limiting channel 31a is located on the inner side of the protruding portion 31, and is a groove or track matched with the limiting ring 24 in shape. The through hole 31b is used for the connector terminal 4 to pass through. The limiting ring 24 is made of insulating material and is precisely embedded in the limiting channel 31a of the protruding portion 31. The radial and circumferential positioning between the heat shield 3 and the heating assembly 2 is achieved. At the same time, the thickness of the limiting ring 24 can be set to be greater than the depth of the limiting channel 31a, that is, after the limiting ring 24 is installed in the limiting channel 31a, the inner side of the limiting ring 24 is outside the limiting channel 31a, at this time the limiting ring 24 is equivalent to supporting the heat shield 3, so that a gap is left between the heat shield 3 and the second insulating layer 23.

[0055] Through such a setting, the connector terminal 4 is provided with a precise support base through the intermediary of the limiting ring 24, avoiding the problems of looseness, falling off or poor sealing that may be caused by the direct installation of the terminal on the thin wall of the heat shield 3. This structure can effectively resist the continuous vibration during vehicle driving, ensuring the long-term stability of the electrical connection. At the same time, the close fit of the limiting ring 24 with the heat shield 3 and the treatment at the place where the connector terminal 4 passes through, such as the use of a sealing ring or glue filling, forms a sealed barrier to prevent water vapor and dust from entering from the interface, protecting the internal circuit. At the same time, through the limiting channel 31a and the limiting ring 24, when installing the heat shield 3, the operator can quickly align and push the limiting ring 24 into the limiting channel 31a, completing the precise positioning in the circumferential and radial directions, ensuring that the connector terminal 4 is automatically aligned with the through hole 31b. Simplifying the assembly process, reducing the adjustment time, improving the production efficiency and assembly consistency. In addition, the design of the protrusion 31 is equivalent to adding a reinforcing structure to the weak link of the heat shield 3, and the protrusion 31 is preferably arranged at the center position of the heat shield 3. The limiting channel 31a surrounds and supports the limiting ring 24, and the various forces acting on the connector terminal 4 are more effectively transmitted to the protrusion 31 and even a larger area of the entire heat shield 3 through the limiting ring 24. Enhance the rigidity and overall deformation resistance of the connection point, effectively suppress the looseness and abnormal noise caused by vibration, and ensure the long-term reliability of the electrical connection. Through the limiting channel 31a and the limiting ring 24, the gap between the heat shield 3 and the second insulating layer 23 is ensured, improving the compactness of the overall structure, while forming an air insulation layer, further hindering the heat loss to the outside, and improving the heating efficiency.

[0056] In a preferred case, the heating assembly 2 further comprises a negative temperature coefficient thermosensitive resistor 25, and the connector terminal 4 is connected to the heating resistor layer 22 through the negative temperature coefficient thermosensitive resistor 25.

[0057] Specifically, the negative temperature coefficient thermosensitive resistor 25 (NTC) is a temperature sensor whose resistance value decreases with temperature rise. The NTC is connected in series with the heating resistor layer 22 in the circuit, and the system controller indirectly and accurately senses the real-time temperature of the heating area by detecting the resistance value change of the NTC, and dynamically adjusts the power supplied to the heating resistor layer 22 accordingly, realizing constant temperature control or overheat protection.

[0058] With such a configuration, the integrated NTC provides real-time temperature feedback, and the control system of the device can form a closed loop to accurately regulate the heating temperature. This avoids under-heating or over-heating, ensuring that the dryer always operates in the optimal temperature range and guarantees consistent drying results. In addition, when an abnormal temperature rise is detected, exceeding the preset safety threshold, such as due to control failure, air flow interruption, or dry burning, the controller can immediately cut off the power supply to prevent the heating component 2 and the dryer body 1 from being damaged by overheating, even causing a safety accident. This enhances the safety and reliability of the product.

[0059] It should be noted that the specific connection method of the connector terminal 4 and the NTC is not limited here and can be directly connected by a wire. In the preferred case, a conductor layer 26 is provided outside the second insulating layer 23, the connector terminal 4 is electrically connected to the conductor layer 26, and the conductor layer 26 is connected to the heating resistor layer 22 through the NTC.

[0060] Specifically, the conductor layer 26 is made of a low resistivity material, such as silver, and is sintered between the second insulating layer 23 and the heating resistor layer 22 to connect the connector terminal 4 assembly to the NTC. This allows efficient transmission of current to the heating resistor layer 22 while minimizing heat generation due to the low resistivity, ensuring the reliability of the electrical connection.

[0061] In the preferred case, the air suspension dryer further comprises a mounting assembly 5 that passes through the heat shield 3 and is connected to the dryer body 1.

[0062] Specifically, the mounting assembly 5 typically includes bolts, brackets, etc., for fixing the entire dryer assembly to the vehicle frame or subframe. One end of the mounting assembly 5 is firmly connected to a solid part of the dryer body 1, and the other end passes through the hole reserved on the heat shield 3 and is finally connected to the vehicle body. The heat shield 3 itself does not mainly bear the weight, but is limited outside the dryer body 1 by the mounting assembly 5.

[0063] Here, the specific structure of the mounting assembly 5 is not limited, and in the alternative case, the mounting assembly 5 includes a first bracket 51 and a second bracket 52, which are respectively arranged at the upper and lower ends of the dryer body 1 and distributed on the left and right sides, as shown in Figure 1 The first bracket 51 forms two connection points with the bottom of the dryer body 1, which are respectively fixedly connected to the outer side wall and the bottom wall of the dryer body 1; the second bracket 52 forms three connection points with the position close to the top end of the dryer body 1, two of which are located in the same vertical direction and are fixedly connected to the outer side wall of one side of the dryer body 1, and the other connection point is crossed with the first two and is fixedly connected to the outer side wall of the dryer body 1.

[0064] In the preferred embodiment, the mounting assembly 5 is provided with a mounting hole 5a, and a buffer 6 is arranged in the mounting hole 5a.

[0065] Specifically, the mounting hole 5a is arranged on the bracket of the mounting assembly 5, such as the end of the first bracket 51 and the second bracket 52, for connecting with the vehicle body through bolts. The buffer 6 is clamped in the mounting hole 5a, and after installation, the buffer 6 is sleeved on the mounting bolt. Here, the buffer 6 can be a rubber bushing or an elastic body in the mounting hole 5a. The buffer 6 is located between the metal bracket and the mounting surface of the vehicle body. It uses the deformation of the elastic material to absorb and attenuate the high-frequency vibrations from the vehicle body, and isolates the low-frequency large-amplitude impact, preventing these mechanical energies from being directly and completely transmitted to the dryer assembly.

[0066] Through such an arrangement, the mounting assembly 5 is directly connected with the strong dryer main body 1, ensuring that all vibrations and impact forces generated during vehicle driving are borne and transmitted by the core component with the highest strength. The heat shield 3 only serves as a cover, avoiding it from bearing the main structural load, thereby preventing the heat shield 3 from deforming, breaking or causing fatigue damage due to stress, protecting its heat preservation function and appearance integrity. The mounting assembly 5 passes through the heat shield 3, but there is usually a gap or a buffer material between them. The path of vibration from the dryer main body 1 directly transmitted to the heat shield 3 through rigid contact is cut off, improving the driving comfort of the vehicle.

[0067] In addition, the buffer 6 can effectively filter out high-frequency fine vibrations and large impacts from the road, greatly reducing the vibration energy transmitted to the dryer assembly. Not only does it protect the precision structure inside the dryer, but it also reduces the noise transmitted to the vehicle interior as a sound source. The buffer 6 attenuates the input stress, providing a relatively stable working environment for the entire dryer, effectively prolonging the service life of the desiccant and the reliability of all components, and ensuring the long-term stability of the drying efficiency.

[0068] In the preferred embodiment, the dryer main body 1 includes an air inlet assembly 11, a drying assembly 12, an air outlet assembly 13, and a tank body 14. The air inlet assembly 11 communicates with the air outlet assembly 13 through the drying assembly 12, and the drying assembly 12 is arranged in the tank body 14. The air inlet assembly 11 includes a first connector seat 111, and the air outlet assembly 13 includes a second connector seat 131.

[0069] Specifically, the air inlet assembly 11 guides the wet air to enter, and the first joint seat 111 is connected with the air inlet pipe; the drying assembly 12 contains a desiccant and absorbs the moisture in the air; the air outlet assembly 13 guides the dried air to exit, and the second joint seat 131 is connected with the air outlet pipe; the tank body 14 comprises an upper end cover 141 and a lower end cover 142, and constitutes a main pressure container of the dryer. The wet compressed air enters from the first joint seat 111, is dehumidified when flowing through the drying assembly 12, becomes dry air, and finally flows out from the second joint seat 131 to supply the air suspension system. The first joint seat 111 and the second joint seat 131 are connected with the air inlet and outlet pipes by using a standard air pipe joint and a base manufactured by a computer numerical control (CNC) processing technology, so as to enhance the overall air tightness and to withstand a high pressure of 3.5 MPa, thereby ensuring the basic performance of the dryer.

[0070] Through such a setting, the air inlet assembly 11 can focus on air flow distribution and pre-separation, the drying assembly 12 can focus on adsorption efficiency and service life, and the air outlet assembly 13 can focus on preventing the loss of desiccant. The air flow path is clear, the air and the desiccant are fully and uniformly contacted, the air flow short circuit or dead zone is avoided, and thus the highest drying efficiency is achieved.

[0071] In a preferred case, the air inlet assembly 11 comprises a flow guide plate 112 and a first steel mesh 113. The flow guide plate 112 is provided with air inlet holes which are communicated with the first joint seat 111. The first steel mesh 113 is located on the downstream side of the flow guide plate 112, and the first steel mesh 113 is provided with a wind deflector which corresponds to the air inlet holes.

[0072] Specifically, the flow guide plate 112 guides the air flow direction and is provided with specific air inlet holes. The first steel mesh 113 supports the drying assembly 12 and realizes flow equalization. The wind deflector is located on the first steel mesh 113 and is preferably arranged at the center of the circular first steel mesh 113 and directly faces the air inlet holes. The high-speed wet air enters from the first joint seat 111 and impacts the flow guide plate 112. The flow guide plate 112 converts the kinetic energy into pressure energy and preliminarily distributes the air flow. After the air flow passes through the air inlet holes, it directly impacts the wind deflector. The wind deflector disperses the concentrated air flow, so that the air flow becomes uniform and low-speed air flow, and then the air flow smoothly enters the drying assembly 12 through the first steel mesh 113.

[0073] Through such a setting, the flow guide plate 112 and the first steel mesh 113 with the wind deflector ensure that the air flow is uniformly distributed on the entire cross section of the desiccant. The uniform distribution makes all the desiccants in the drying assembly 12 participate in the adsorption work, improves the drying efficiency, and makes the dryness of the outlet air more stable. The structure of the wind deflector directly attacks the area where the air flow is most concentrated, consumes the kinetic energy and disperses it, and slows down the flow speed of the air flow which subsequently contacts the desiccant. The wear and powdering of the desiccant are reduced, the service life and replacement cycle of the desiccant are significantly prolonged, and the maintenance cost is reduced.

[0074] In the preferred embodiment, the air outlet assembly 13 comprises a second steel mesh 132 and a spring 133. The second steel mesh 132 is arranged downstream of the drying assembly 12. One end of the spring 133 is connected to the second steel mesh 132, and the other end of the spring 133 is connected to the inner arm of the tank body 14.

[0075] Specifically, the second steel mesh 132 is located downstream of the drying assembly 12 to prevent the drying agent particles from being carried out by the airflow. The spring 133 provides a continuous compression force. The spring 133 is compressed between the upper end cover 141 of the tank body 14 and the second steel mesh 132. The spring force is transmitted through the second steel mesh 132, the drying assembly 12, the first steel mesh 113, the flow guide plate 112, and the lower end cover 142, thereby continuously compressing the entire drying assembly 12 to a pre-tightened state. Further, a mounting groove is provided on the upper end cover 141, and the end of the spring 133 is clamped in the mounting groove to ensure the stability of the spring 133.

[0076] With such an arrangement, under the impact of the airflow, especially the pulsed airflow, the drying agent particle bed in the drying assembly 12 is easily carried along with the airflow, causing intense friction between the particles and resulting in pulverization. The fine powder may be carried away by the airflow, blocking the downstream valve or air bag. The continuous compression force provided by the spring 133 increases the friction between the particles and improves the critical airflow velocity required for fluidization, thereby effectively suppressing the fluidization phenomenon and preventing the loss and pulverization of the drying agent, ensuring the long-term reliable operation of the system. In long-term use and multiple adsorption / desorption cycles, the drying agent may undergo slight wear and volume shrinkage, and the internal components may become loose, producing noise under vehicle vibration, or even causing misalignment of parts. The pre-tightening force of the spring 133 can automatically compensate for this slight volume change, always ensuring that all internal components are in close contact, forming a stable whole, eliminating the abnormal noise and potential performance degradation caused by the gap. In addition, the spring 133 compression structure can relax the dimensional tolerance requirements of the internal components. During assembly, the spring 133 only needs to be compressed to a predetermined position, which can automatically adapt to the slight cumulative dimensional deviation of a set of components. This reduces the stringent requirements for the accuracy of individual parts, simplifies the assembly process, improves production efficiency and product qualification rate.

[0077] In the preferred embodiment, the drying assembly 12 is provided with a first felt plate 15 and a second felt plate 16 at both ends. The first felt plate 15 is located downstream of the first steel mesh 113, and the second felt plate 16 is located upstream of the second steel mesh 132.

[0078] Specifically, the first felt plate 15 and the second felt plate 16 are made of soft, porous fiber material and are located between the steel mesh and the drying agent. The felt plate is sandwiched between the hard steel mesh and the drying agent particles. It serves as a soft buffer layer and also assists in filtering airflow impurities.

[0079] Through such a setting, the desiccant particles are in direct contact with the hard metal steel mesh. Under the impact of vehicle vibration and air flow, extremely high contact stress is generated at the contact points, causing the particles to be crushed and ground. The soft felt board greatly increases the contact area, and its fiber structure can absorb and disperse these stresses, reducing friction and the generation of powder, prolonging the service life of the desiccant. The dense porous fiber structure of the felt board can effectively intercept these micron-sized powders, preventing them from passing through the steel mesh into the air outlet pipeline, avoiding failures caused by valve jamming and air bag wear, and improving the reliability of the entire air suspension system.

[0080] It should be understood that the above specific embodiments of the present application are only used for illustrative or explanatory purposes of the principles of the present application, and do not constitute a limitation of the present application. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present application shall be included in the protection scope of the present application. In addition, the appended claims of the present application are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. An air suspension dryer characterized by, It includes a dryer body (1), a heating assembly (2) and a heat insulation cover (3), wherein the dryer body (1) and the heating assembly (2) are located inside the heat insulation cover (3); The heating component (2) includes a first insulating layer (21), a heating resistance layer (22), and a second insulating layer (23). The first insulating layer (21), the heating resistance layer (22), and the second insulating layer (23) are sequentially disposed on the outside of the dryer body (1). The heating resistance layer (22) is connected to an external circuit, and a gap is provided between the second insulating layer (23) and the heat insulation cover (3).

2. The air suspension dryer according to claim 1, characterized in that, The air suspension dryer also includes a connector terminal (4), and the heating assembly (2) also includes a limiting ring (24). The connector terminal (4) passes through the heat insulation cover (3) and is connected to the limiting ring (24). The connector terminal (4) is electrically connected to the heating resistance layer (22). The limiting ring (24) is located outside the second insulation layer (23). The outer side of the limiting ring (24) is connected to the inner side of the heat insulation cover (3).

3. The air suspension dryer according to claim 2, characterized in that, The heating component (2) also includes a negative temperature coefficient thermistor (25), and the connector terminal (4) is connected to the heating resistance layer (22) through the negative temperature coefficient thermistor (25).

4. The air suspension dryer according to claim 2, characterized in that, The heat insulation cover (3) has a protrusion (31) on its outer periphery, and a limiting channel (31a) is formed on the inner side of the protrusion (31). The limiting channel (31a) is adapted to the limiting ring (24). A through hole (31b) is formed through the protrusion (31), and the connector terminal (4) passes through the through hole (31b) and is connected to the heating resistor layer (22).

5. The air suspension dryer according to claim 1, characterized in that, The air suspension dryer also includes a mounting assembly (5) that passes through the heat shield (3) and is connected to the dryer body (1).

6. The air suspension dryer according to claim 5, characterized in that, The mounting component (5) is provided with a mounting hole (5a), and a buffer part (6) is provided inside the mounting hole (5a).

7. The air suspension dryer according to claim 1, characterized in that, The dryer body (1) includes an air inlet assembly (11), a drying assembly (12), an air outlet assembly (13), and a tank (14). The air inlet assembly (11) is connected to the air outlet assembly (13) through the drying assembly (12). The drying assembly (12) is disposed inside the tank (14). The air inlet assembly (11) includes a first connector seat (111), and the air outlet assembly (13) includes a second connector seat (131).

8. The air suspension dryer according to claim 7, characterized in that, The air intake assembly (11) includes a guide plate (112) and a first steel mesh (113). An air intake hole is formed on the guide plate (112), and the air intake hole communicates with the first connector seat (111). The first steel mesh (113) is located downstream of the guide plate (112), and a wind baffle is provided on the first steel mesh (113), which corresponds to the air intake hole.

9. The air suspension dryer according to claim 8, characterized in that, The air outlet assembly (13) includes a second steel mesh (132) and a spring (133). The second steel mesh (132) is disposed on the downstream side of the drying assembly (12). One end of the spring (133) is connected to the second steel mesh (132), and the other end of the spring (133) is connected to the inner arm of the tank body (14).

10. The air suspension dryer according to claim 9, characterized in that, The drying assembly (12) has a first felt plate (15) and a second felt plate (16) at both ends. The first felt plate (15) is located downstream of the first steel mesh (113), and the second felt plate (16) is located upstream of the second steel mesh (132).

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