Dryer, air suspension system and automobile

Abstract

The utility model relates to a high-pressure-resistant air dryer, an air suspension system and an automobile. The dryer comprises an air inlet unit and an exhaust unit which are communicated with each other, the exhaust unit comprises a lower shell with an exhaust nozzle, an inner cavity formed in the lower shell and used for containing a drying agent, an upper cover plate and a lower cover plate which are arranged at the upper end and the lower end of the drying agent, and a spring assembly arranged above the upper cover plate; the air inlet unit comprises an upper shell with an air inlet nozzle and a metal ring embedded in the outer edge of an opening of the upper shell, and the upper shell and the lower shell are connected in a sealing mode through a flange gasket and pressed tightly through a bolt. A flange sealing gasket is further adopted and is pressed by a bolt, a good sealing effect is achieved under the condition that the bursting pressure requirement is met, in addition, a plastic part is used for replacing a metal shell, and cost is greatly reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobiles and relates to a dryer, an air suspension system and an automobile, in particular to a high-pressure resistant air dryer, an air suspension system and an automobile. Background Art

[0002] In recent years, with the increasing NVH requirements in automobiles, the design of electronic products has trended towards integration, modularization, and miniaturization. An air suspension system is an advanced vehicle suspension system whose main components are adjustable air springs and an air supply unit, interconnected by pneumatic lines. The air springs cushion the vehicle body, while the air supply unit provides compressed air to the air suspension system. The air springs are filled or emptied by switching specific valves, allowing the air suspension system to actively change the height / level of the vehicle body relative to the axle or road surface. Currently, manufacturers have introduced new electronic devices for air supply units for vehicles with air suspension, including integrated dryers and split dryers. Integrated dryers integrate the dryer with the valve, but this design is bulky, cannot be easily adjusted, and is only suitable for a limited number of vehicle models, not fully compatible with existing models. While split dryers address the inconvenient installation and poor compatibility of existing air supply units, they also come with the added challenges of high cost and high leakage at high pressures. Utility Model Content

[0003] The purpose of the present invention is to provide a low-cost, leak-proof, high-pressure resistant air dryer, air suspension system and automobile. The present invention replaces the metal parts of the outer shell with plastic parts, and adopts bolt connection instead of welding. Specifically, flange sealing gaskets are adopted, which are tightened by bolts. Compared with traditional welding, the strength is higher, and the embedded metal ring is used to withstand axial force to ensure that the mounting surface will not deform under high blasting pressure. A good sealing effect is achieved while meeting the blasting pressure requirements, which greatly reduces the cost while improving its sealing and high-pressure resistance, solving the problems of high cost and large leakage under high pressure of traditional dryers, and improving the market adaptability of the product.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] The first aspect of the present invention provides a dryer, which is applied to an air suspension system, comprising an air intake unit and an exhaust unit that are interconnected, wherein the exhaust unit comprises a lower shell having an exhaust nozzle, an inner cavity provided in the lower shell for placing a desiccant, an upper cover plate and a lower cover plate provided at the upper and lower ends of the desiccant, and a spring assembly provided above the upper cover plate; the air intake unit comprises an upper shell having an air intake nozzle and a metal ring embedded in the outer edge of the opening of the upper shell; during backblowing, the metal ring can provide additional supporting force to help the upper shell and the lower shell resist axial force, thereby maintaining the stability of the system function; the upper shell and the lower shell are sealed and connected by a flange gasket and tightened by bolts; the flange gasket and the bolts provide sealing and high-pressure resistance for the entire dryer to ensure that gas leakage does not occur under high pressure and vibration environments.

[0006] Furthermore, the metal ring protrudes from the lower edge of the upper shell and abuts against the flange gasket.

[0007] Furthermore, the spring assembly includes a spring on the upper cover and a spring pressure plate fixedly connected to the spring. The upper inner wall of the lower housing is provided with an inwardly facing ridge that abuts the spring pressure plate. When the dryer's internal gas backflows, the ridge firmly presses against the spring pressure plate, keeping the desiccant firmly fixed between the upper and lower covers. The spring's elastic force constantly acts on the desiccant, ensuring that the desiccant is firmly pressed by the spring when the vehicle is in motion. This prevents the desiccant from moving around, causing dynamic wear and resulting in powder generation, thereby reducing the load on the desiccant filter.

[0008] Furthermore, the spring pressure plate, the upper cover plate and the lower cover plate are also provided with vents.

[0009] Furthermore, the air inlet nozzle and the air exhaust nozzle are arranged opposite to each other.

[0010] Furthermore, the desiccant is a molecular sieve, which can absorb moisture in the air to achieve the purpose of drying.

[0011] Furthermore, a non-woven fabric is provided between the desiccant and the lower cover plate to prevent tiny powders that may be generated by the desiccant after long-term use from entering the air suspension system.

[0012] Furthermore, the upper shell and the lower shell are plastic parts, and the plastic parts are preferably PA6 (Polyamide 6, i.e. polyamide 6 or nylon 6), so as to ensure the pressure resistance of the shell and greatly reduce the cost of the dryer.

[0013] A second aspect of the present invention provides an air suspension system, which includes the dryer as described in the first aspect.

[0014] A third aspect of the present invention provides a car, which includes the air suspension system described in the second aspect.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1) Traditional low-pressure plastic dryers use welding to solve the sealing problem, but under high-pressure conditions, plastic welding cannot meet the burst pressure requirement of more than 80 bar. The utility model uses a flange gasket and tightens it with bolts to achieve a good sealing effect while meeting the burst pressure requirement;

[0017] 2) The present invention adopts bolt connection, which has higher strength than traditional welding, and has an embedded metal ring to withstand axial force to ensure that the mounting surface will not deform under high blasting pressure;

[0018] 2) In order to achieve high bursting pressure requirements, the traditional dryer has a metal shell. The utility model uses a plastic shell to meet high bursting pressure requirements, which greatly reduces the cost compared to metal shells. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the high-pressure resistant air dryer of the utility model.

[0020] Description of the marks in the figure:

[0021] 1-Intake unit, 11-Intake nozzle, 12-Upper shell, 13-Metal ring, 2-Exhaust unit, 21-Lower shell, 22-Spring pressure plate, 23-Spring, 24-Desiccant upper cover, 25-Desiccant, 26-Non-woven fabric, 27-Desiccant lower cover, 28-Exhaust nozzle, 3-Flange gasket, 4-Bolt. DETAILED DESCRIPTION

[0022] The following embodiments are implemented based on the above technical solution of the present invention, and provide detailed implementation methods and specific operation processes, but the protection scope of the present invention is not limited to the following embodiments.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0024] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0025] In the following embodiments, unless otherwise specified, raw materials or processing techniques are conventionally available in the market or conventional processing techniques are used. Unless otherwise specified, functional components or structures are conventional components or structures used in the art to achieve the corresponding functions.

[0026] Example:

[0027] Figure 1 This is a schematic diagram of the structure of the high-pressure air dryer in the utility model. Figure 1 As shown, the high-pressure air dryer includes an interconnected air intake unit 1 and an exhaust unit 2. The exhaust unit 2 includes a lower housing 21 with an exhaust nozzle 28, an inner cavity within the lower housing 21 for placing a molecular sieve, an upper cover plate 24 and a lower cover plate 27 located at the upper and lower ends of the molecular sieve, and a spring assembly located above the upper cover plate 24. The molecular sieve can absorb moisture from the air, thereby achieving the purpose of drying. The upper housing 12 and the lower housing 21 are made of PA6 to ensure the pressure resistance of the housing while greatly reducing the cost of the dryer. The spring assembly includes a spring 23 on the upper cover plate 24 and a spring pressure plate 22 fixedly connected to the spring 23. The upper inner wall of the lower housing 21 is provided with an inward ridge that abuts the spring pressure plate 22. When the gas inside the dryer is backblown, the ridge tightly presses against the spring pressure plate 22, keeping the molecular sieve fixed between the upper cover plate 24 and the lower cover plate 27. The spring 23 relies on its elastic force to ensure that the molecular sieve in the moving dryer is always in a relatively static state. Vents are also provided on the spring pressure plate 22, upper cover plate 24, and lower cover plate 27 to allow air to circulate throughout the dryer. A non-woven fabric 26 is also provided between the molecular sieve and lower cover plate 27 to prevent fine powder, which may be generated by the desiccant after prolonged use, from entering the air suspension system. The air intake unit 1 comprises an upper shell 12 with an air inlet nozzle 11 and a metal ring 13 embedded in the outer edge of the opening of the upper shell 12. The air inlet nozzle 11 and the exhaust nozzle 28 are arranged opposite each other. The metal ring 13 protrudes from the lower edge of the upper shell 12 and abuts against the flange gasket 3. During backflush, the metal ring 13 provides additional support to help the upper shell 12 and lower shell 21 resist axial forces, thereby maintaining the stability of the system's functions. The upper shell 12 and lower shell 21 are sealed together by the flange gasket 3 and tightened by bolts 4. The flange gasket 3 and bolts 4 provide sealing and high-pressure resistance for the entire dryer, ensuring that gas leakage does not occur under high pressure and vibration environments.

[0028] The operation process of the high-pressure resistant air dryer of this embodiment is as follows: external air enters the air dryer through the air inlet nozzle 11, and the air is then dried by the molecular sieve and filtered by the non-woven fabric 26 to prevent the tiny powder that may be generated by the molecular sieve after long-term use from entering the air suspension system. At the same time, the pure dry gas in the air suspension system can enter the air filter dryer through the exhaust nozzle 28 in the reverse direction, forming a cycle, and then be discharged through the exhaust unit 2 and the air inlet unit 1 in turn. In this process, the moisture in the molecular sieve can be taken away by the gas backflushing function, thereby increasing the service life of the molecular sieve. During the backflushing, the gas will pass through the system at an extremely high pressure instantaneously, causing the internal air pressure of the air dryer to expand rapidly. At this time, the upper shell 12 and the lower shell 21 will be subjected to a large axial force. The metal ring 13 can provide them with a large support force at this time, playing a key supporting role in the backflushing process, preventing the shell from deformation, playing a good pressure-resistant role, and ensuring the stability of the system function.

[0029] The above description of the embodiments is intended to facilitate understanding and use of the utility model by those skilled in the art. Those skilled in the art will readily be able to make various modifications to these embodiments and apply the general principles described herein to other embodiments without requiring inventive effort. Therefore, the utility model is not limited to the above-described embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of this utility model without departing from the scope of this utility model should be within the scope of protection of this utility model.

Claims

1. A dryer, applied to an air suspension system, characterized in that: The invention comprises an air intake unit (1) and an air exhaust unit (2) which are interconnected. The air exhaust unit (2) comprises a lower shell (21) having an air exhaust nozzle (28), an inner cavity provided in the lower shell (21) for placing a desiccant (25), an upper cover plate (24) and a lower cover plate (27) provided at the upper and lower ends of the desiccant (25), and a spring assembly provided above the upper cover plate (24); the air intake unit (1) comprises an upper shell (12) having an air intake nozzle (11) and a metal ring (13) embedded in the outer edge of the opening of the upper shell (12); the upper shell (12) and the lower shell (21) are sealed and connected by a flange gasket (3) and are compressed by bolts (4).

2. The dryer according to claim 1, characterized in that The metal ring (13) protrudes from the lower edge of the upper shell (12) and abuts against the flange gasket (3).

3. The dryer according to claim 1, characterized in that The spring assembly comprises a spring (23) on an upper cover plate (24) and a spring pressure plate (22) fixedly connected to the spring (23); an inner wall of the upper edge of the lower shell (21) is provided with a ridge inwardly, and the ridge abuts against the spring pressure plate (22).

4. The dryer according to claim 3, characterized in that The spring pressure plate (22), the upper cover plate (24) and the lower cover plate (27) are also provided with ventilation holes.

5. The dryer according to claim 1, characterized in that The air inlet nozzle (11) and the air outlet nozzle (28) are arranged opposite to each other.

6. The dryer according to claim 1, characterized in that The desiccant (25) is a molecular sieve.

7. The dryer according to claim 1, characterized in that A non-woven fabric (26) is further provided between the desiccant (25) and the lower cover plate (27).

8. The dryer according to claim 1, wherein The upper shell (12) and the lower shell (21) are plastic parts.

9. An air suspension system, characterized in that: The air suspension system includes the dryer according to any one of claims 1 to 8.

10. An automobile, characterized in that: The vehicle comprises the air suspension system as claimed in claim 9 .

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