Dryer with electric heating module and vehicle suspension air supply system using same

Abstract

The dryer comprises a dryer shell, an inner cavity of the dryer shell is divided into a drying agent cavity and a heating module wiring cavity which are independent of each other through an end face structure, a heating module barrel sleeve is arranged on the end face structure in a penetrating mode, and the two ends of the heating module barrel sleeve stretch into the two independent cavities respectively. Two air tap connectors communicated with the drying agent cavity are arranged on the outer wall of the dryer shell at intervals, a drying agent drying assembly is arranged between the outer wall, located between the two air tap connectors, of the heating module barrel sleeve and the inner wall of the dryer shell, and a heating body assembly is arranged in the heating module barrel sleeve. A connector assembly is arranged on the outer wall of the dryer shell and used for being connected with an external power source, and the heating body assembly is electrically connected with the connector assembly. According to the invention, related connector design is simplified, product cost is reduced, airtightness failure caused by structural deformation after long-term work of the plastic assembly is avoided, high-efficiency and low-loss heating control can be realized, and system arrangement is more flexible.

Description

Technical Field

[0001] The invention relates to a dryer with an electric heating module and a vehicle suspension air supply system using the dryer, belonging to the technical field of automobile air suspension. Background Art

[0002] The air suspension system uses air springs instead of traditional steel springs. The air springs can be used to control the intake and exhaust of the air springs to adjust the vehicle height and suspension stiffness, providing better ride comfort and handling performance. In this system, the air compressor sucks in and compresses the outside air and then delivers it to the air springs, air tanks and other components. When the system is running, the compressed air circulates between the air springs and air tanks through the air circuit and control valve. Since there is a certain amount of water vapor in the outside air, liquid water will cause many problems in the system, such as accelerating the aging of the rubber parts inside the air springs, corroding and jamming the metal parts of the air circuit valves, etc., thus affecting the service life of the entire suspension system. For this reason, the dryer becomes a very important component in the air circuit of the suspension air supply system.

[0003] In order to ensure efficient drying performance in both high and low temperature environments, the dryer in the air suspension system generally uses molecular sieves as water-absorbing materials. At the same time, in order to ensure that the drying function remains effective during the life cycle of the vehicle, it is necessary to consider using the regeneration function of the desiccant. At present, air dryers in suspension air supply systems generally use molecular sieves as desiccant, and regeneration is achieved by heating. In order to obtain the high temperature required during the regeneration process, the air dryer usually needs to be close to the high-power heating components of the system, so the layout flexibility is poor. At the same time, due to the many limiting factors of the heat source heating rate and steady-state temperature, it is often difficult to meet the regeneration temperature range requirements under actual circumstances, resulting in low regeneration efficiency or even failure to achieve the regeneration function. Therefore, the art is in urgent need of a dryer with an independent heating module to make up for the above functional and layout defects. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a dryer with an electric heating module and a vehicle suspension air supply system using the same, which can make the installation arrangement of the dryer more flexible and realize precise temperature control during the desiccant regeneration process, thereby improving the desiccant regeneration conversion efficiency and extending the life of the dryer.

[0005] In order to achieve the above technical objectives and the above technical effects, this application is implemented through the following technical solutions:

[0006] In the first aspect, the present invention provides a dryer with an electric heating module, including a dryer shell, which is a high-temperature resistant non-metallic material structure. The dryer shell is provided with an end face structure, and the inner cavity of the dryer shell is divided by the end face structure to form two independent chambers, one is a desiccant chamber, and the other is a heating module wiring chamber. At least one heating module sleeve is passed through the end face structure, and the two ends of the heating module sleeve extend into the two independent chambers respectively. Two air nozzle interfaces connected to the desiccant chamber are arranged on the outer wall of the dryer shell at intervals, and a desiccant drying component is arranged between the outer wall of the heating module sleeve located between the two air nozzle interfaces and the inner wall of the dryer shell. A heating element component is arranged in the heating module sleeve, and a connector component is arranged on the outer wall of the dryer shell on one side of the heating module wiring chamber for connecting an external power supply. One end of the heating element component located in the heating module wiring chamber is electrically connected to the connector component.

[0007] Preferably, the desiccant drying component includes a filter felt, a perforated baffle and a desiccant material, wherein two filter felts are provided and are sleeved and fixed on the outer wall of the heating module sleeve at intervals, and the desiccant material is filled between the two filter felts, and two perforated baffles are provided and are sleeved and fixed on the outer wall of the heating module sleeve on the side opposite to each other of the two filter felts, the perforated baffle is pressed together with the filter felt, and the outer walls of the filter felt and the perforated baffle are both gap-matched with the inner wall of the inner cavity of the dryer shell.

[0008] Preferably, a connecting hole connecting the desiccant chamber and the heating module wiring chamber is opened on the end face structure, the heating module sleeve is inserted in the connecting hole, a boss is provided on the outer wall of the heating module sleeve located in the desiccant chamber, the side wall surface of the boss is in contact with the end face of the end face structure, and a locking piece is detachably provided on the outer wall of the heating module sleeve extending into the heating module wiring chamber, and the locking piece is clamped on the end face of the end face structure.

[0009] Furthermore, a groove is provided at an opening of one side of the communicating hole toward the boss, and the groove includes but is not limited to a chamfered or arc-shaped groove, and a sealing ring is embedded in the groove.

[0010] Furthermore, the dryer shell is located at one side opening of the desiccant chamber and is detachably provided with a rear end cover, and an elastic member is provided between the inner wall of the rear end cover and the desiccant drying assembly to press and fix the desiccant drying assembly in the desiccant chamber.

[0011] Furthermore, the locking member includes but is not limited to a retaining spring locking member or a threaded locking member.

[0012] Preferably, the dryer housing is located at one side opening of the heating module wiring chamber and is detachably provided with a front end cover.

[0013] Furthermore, the connector assembly is arranged on the outer wall of the dryer shell or on the front end cover.

[0014] Furthermore, the connector assembly includes a connector interface and a connector pin, the connector interface is arranged on the outer wall of the dryer shell or on the front end cover, the connector pin is arranged on the connector interface, and one end is located in the connector interface and the other end extends into the wiring chamber of the heating module, and the end of the connector pin extending into the wiring chamber of the heating module is electrically connected to the heating element assembly through a lead.

[0015] In the second aspect, the present invention also provides a vehicle suspension air supply system, including a dryer element, an electric heating drive and feedback wiring harness, an air supply system electronic control unit, an air supply system valve body assembly, a first air pipe and a second air pipe, the dryer element uses the above-mentioned dryer with an electric heating module, the two air nozzle interfaces on the dryer element are respectively connected to the air supply system valve body assembly through the first air pipe and the second air pipe, the connector assembly is electrically connected to the air supply system electronic control unit through the electric heating drive and feedback wiring harness, and the air supply system electronic control unit is electrically connected to the air supply system valve body assembly.

[0016] The dryer with electric heating module provided by the present invention and the vehicle suspension air supply system using the same have the following advantages:

[0017] 1. The dryer with an electric heating module of the present invention, through the sealing structure design of the heating module and the dryer shell, air-tightly isolates the desiccant chamber involving high-pressure gas sealing requirements from the heating module wiring chamber, thereby reducing the air-tightness requirements of the lead part of the heating module, simplifying the related connector design, and reducing product costs.

[0018] 2. In the dryer with an electric heating module of the present invention, the air tightness of the sealing structure between the heating module and the dryer shell does not depend on the fitting clearance between the heating module and the wall of the shell mounting hole. Therefore, it is not affected by the cyclic heating and cooling of the heating module, thus avoiding air tightness failure caused by structural deformation of the plastic component after long-term work.

[0019] 3. The dryer with an electric heating module of the present invention realizes direct contact heat conduction between the heating module and the desiccant in structure, and cooperates with the dryer shell with low thermal conductivity to effectively control the heat inside the desiccant chamber, thereby realizing efficient and low-loss heating control.

[0020] 4. The dryer with electric heating module of the present invention uses an independent electric heating module, so the regeneration function of the dryer is not dependent on its installation position, and the system layout is more flexible.

[0021] 5. The vehicle suspension air supply system with electric heating module can realize accurate temperature control of the desiccant regeneration process through electric heating power adjustment and temperature detection, improve the regeneration conversion efficiency and extend the life of the dryer. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a dryer with an electric heating module in which a connector assembly provided in an embodiment of the present invention is arranged on a front end cover;

[0023] Figure 2 A schematic diagram of the structure of a dryer with an electric heating module in which a connector assembly provided by an embodiment of the present invention is integrated and axially led out from the side of the dryer shell;

[0024] Figure 3 A schematic diagram of the structure of a dryer with an electric heating module in which a connector assembly provided by an embodiment of the present invention is integrated and radially led out from the side of the dryer shell;

[0025] Figure 4 This is a schematic diagram of the local structure of the heating module sleeve and the end surface structure in a state where the sleeve and the end surface structure are locked by a retaining spring according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of a local structure of the heating module sleeve and the end surface structure in a thread-locked state according to an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of a local structure of an embodiment of the present invention, mainly showing a state in which the boss diameter is larger than the groove outer diameter;

[0028] Figure 7 This is a schematic diagram of a local structure of an embodiment of the present invention, mainly showing a state in which the boss diameter is smaller than the groove outer diameter;

[0029] Figure 8 A schematic diagram of the structure of a vehicle suspension air supply system provided by an embodiment of the invention;

[0030] In the figure:

[0031] 1-dryer housing; 11-end face structure; 111-connecting hole; 112-groove; 12-desiccant chamber; 13-heating module wiring chamber; 14-nozzle interface; 2-heating module sleeve; 21-boss; 3-desiccant drying assembly; 31-filter felt; 32-perforated baffle; 33-desiccant material; 4-heating element assembly; 5-connector assembly; 51-connector interface; 52-connector pin; 6-sealing ring; 7-locking piece; 8-rear end cover; 9-elastic piece; 10-front end cover; 15-lead; 16-dryer element; 17-electric heating drive and feedback harness; 18-air supply system electronic control unit; 19-air supply system valve body assembly; 22-first air pipe; 23-second air pipe. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technical personnel in this field without making creative work are within the scope of protection of the present invention.

[0033] Reference Figure 1-Figure 3 A dryer with an electric heating module provided by the present invention includes a dryer shell 1, which is made of a high-temperature resistant non-metallic material and can be a structural member of any shape. An end face structure 11 is integrally formed in the dryer shell 1, and the inner cavity of the dryer shell 1 is divided by the end face structure 11 to form two independent chambers, one is a desiccant chamber 12 for providing a storage space for the desiccant, and the other is a heating module wiring chamber 13. Two air nozzle interfaces 14 connected to the desiccant chamber 12 are integrally formed and spaced on the outer wall of the dryer shell 1. In this embodiment, the dryer shell 1 is preferably a cylindrical shell made of high-temperature resistant plastic. The air nozzle interfaces 14 can be spaced radially along the dryer shell 1, or can be spaced around the circumference of the dryer shell 1. The air nozzle interfaces 14 are preferably spaced radially along the dryer shell 1.

[0034] Reference Figure 1-Figure 7A dryer with an electric heating module, further comprising a heating module sleeve 2, a desiccant drying component 3, a heating element component 4 and a connector component 5, at least one heating module sleeve 2 is installed on the end surface structure 11, and both ends of the heating module sleeve 2 extend into two independent chambers respectively, and a connecting hole 111 is opened on the end surface structure 11 to connect the desiccant chamber 12 and the heating module wiring chamber 13 and for the heating module sleeve 2 to be inserted, and the outer wall of the heating module sleeve 2 and the hole wall of the connecting hole 111 are preferably installed in a clearance fit or transition fit manner, and the desiccant drying component 3 is installed on the outer wall of the heating module sleeve 2 between the two air nozzle interfaces 14 and the dryer shell. 1 is used for dehumidifying the air flowing into the desiccant chamber 12 by convection. The heating element component 4 is installed in the heating module sleeve 2. The connector component 5 is installed on the outer wall of the dryer housing 1 on one side of which the heating module wiring chamber 13 is provided. One end of the heating element component 4 located in the heating module wiring chamber 13 is electrically connected to the connector component 5. The heating element component 4 can be a PTC heater or a ceramic heating element. In this embodiment, the heating element component 4 is preferably a PTC heater. The heating principle and installation and use of the PTC heater are existing technologies and will not be described in detail. The connector component 5 is used to connect an external power supply to provide the heating element component 4 with the electric energy required for heating.

[0035] Furthermore, the heating module sleeve 2 and the heating element assembly 4 can be integrated into an integral structure.

[0036] The heating module sleeve 2 is located in the desiccant chamber 12 and has an integrally formed boss 21 on its outer wall. The heating module sleeve 2 and the boss 21 are preferably cylindrical and coaxially arranged. The side wall of the boss 21 fits the end face of the end face structure 11. A groove 112 is provided at the opening of the connecting hole 111 on one side of the boss 21. The groove 112 includes but is not limited to a chamfered or arc-shaped groove. The outer diameter of the boss 21 can be larger than the outer diameter of the groove 112, and the installation limit of the heating module sleeve 2 can be achieved through the boss 21. The outer diameter of the boss 21 can also be smaller than the outer diameter of the groove 112, and the boss 21 does not have an insertion limit function. A sealing ring 6 is embedded in the groove 112, and the sealing ring 6 is preferably a high-temperature resistant rubber ring. A locking member 7 is detachably installed on the outer wall of the heating module sleeve extending into the heating module wiring chamber 13. The locking member 7 is clamped on the end face of the end face structure 11. The locking member 7 includes but is not limited to a retaining spring locking member 7 or a threaded locking member 7. The locking method is the existing technology and will not be elaborated on. The locking force of the locking member 7 acts on the heating module sleeve 2 to ensure that the sealing ring 6 is continuously in a compressed state, thereby achieving a fitting seal between the groove 112 surface and the sealing ring 6, as well as a fitting seal between the sealing ring 6 and the end face of the boss 21.

[0037] Reference Figure 1-Figure 3The dryer shell 1 is located at one side of the opening of the desiccant chamber 12 and is detachably installed with a rear end cover 8 for sealing the desiccant chamber 12. An elastic member 9 is installed between the inner wall of the rear end cover 8 and the desiccant drying component 3 to press and fix the desiccant drying component 3 in the desiccant chamber 12. In this embodiment, the elastic member 9 is preferably a coil spring, and a protrusion can be integrally formed on the inner wall of the rear end cover 8 to provide positioning for one end of the elastic member 9; the dryer shell 1 is located at one side of the opening of the heating module wiring chamber 13 and is detachably installed with a front end cover 10 to facilitate the installation of the heating element component 4 and the connector component 5. The rear end cover 8 and the front end cover 10 can be installed with the dryer shell 1 in the form of an interference fit plug-in sleeve, or can be connected by a threaded connection. In this embodiment, the rear end cover 8 and the front end cover 10 are preferably connected in a plug-in sleeve fixed manner, and the inside of the heating module wiring chamber 13 can also be sealed by pouring potting glue. In this case, the front end cover 10 is not required.

[0038] Furthermore, the desiccant drying component 3 includes a filter felt 31, a perforated baffle 32 and a desiccant material 33. The filter felt 31 and the perforated baffle 32 are both annular structures with a hole in the middle. Two filter felts 31 are installed and are installed on the outer wall of the heating module sleeve 2 at intervals. The desiccant material 33 is filled and clamped between the two filter felts 31. Two perforated baffles 32 are installed and are respectively installed on the outer wall of the heating module sleeve 2 on the side away from each other of the two filter felts 31. The filter felt 31 and the perforated baffle 32 are installed with the outer wall of the heating module sleeve 2 with a clearance fit. The outer walls of the felt 31 and the perforated baffle 32 are both loosely matched with the inner wall of the inner cavity of the dryer shell 1. One side of the perforated baffle 32 close to the end face structure 11 is axially limited by the boss 21 on the heating module sleeve 2, and the other side of the perforated baffle 32 is pressed with the first filter felt 31 to provide a clamping end face of the desiccant chamber 12; one side of the perforated baffle 32 installed away from the end face structure 11 is pressed by the elastic member 9, and the other side of the perforated baffle 32 is pressed with the second filter felt 31 to provide a clamping end face on the other side of the desiccant chamber 12, wherein the perforated baffle 32 is preferably made of corrosion-resistant metal material, such as stainless steel.

[0039] Reference Figure 1-Figure 3, the connector component 5 is installed on the outer wall of the dryer shell 1 or on the front end cover 10, the connector component 5 includes a connector interface 51 and a connector pin 52, the connector interface 51 is integrally formed on the outer wall of the dryer shell 1 or on the front end cover 10 according to the layout method, specifically, the connector interface 51 can be axially led out from the side of the dryer shell 1, can be radially led out from the side wall of the dryer shell 1, or can be led out from the side of the front end cover 10 away from the dryer shell 1, the connector pin 52 is installed on the connector interface 51, and one end is located in the connector interface 51 and the other end extends into the heating module wiring chamber 13, the end of the connector pin 52 extending into the heating module wiring chamber 13 is electrically connected to the heating element component 4 through the lead 15, the heating module wiring chamber 13 provides a layout space for the lead 15, in this embodiment, the way in which the heating element component 4 is connected to the connector pin 52 through the lead 15 is the prior art, and no further elaboration is made, the connector interface 51 is preferably led out from the side of the front end cover 10 away from the dryer shell 1.

[0040] The dryer with electric heating module in this embodiment only illustrates the solution of a single heating module sleeve 2. The parallel structure of two or more heating module sleeves 2 of this structure still belongs to an embodiment of this patent.

[0041] The implementation principle of the dryer with electric heating module of the present invention is as follows:

[0042] The desiccant chamber 12 is sealed for high pressure gas: a boss 21 is provided at the connection part between the heating module sleeve 2 and the dryer shell 1, and a sealing groove 112 is provided corresponding to the inner end surface structure 11 of the dryer shell 1. A sealing ring 6 is installed between the boss 21 and the groove 112. After the heating module sleeve 2 is inserted into the dryer shell 1, the end of the heating module sleeve 2 provides a locking force through the locking member 7 to ensure that the sealing ring 6 is continuously in a compressed state, thereby achieving a fitting seal between the groove 112 surface and the sealing ring 6, and a fitting seal between the sealing ring 6 and the end surface of the boss 21; in this structure, the sealing function does not depend on Due to the gap between the outer wall of the heating module sleeve 2 and the wall of the connecting hole 111 on the end face structure 11, the expansion and contraction of the outer diameter of the heating module sleeve 2 during operation does not affect the sealing performance; under this sealing structure, the high air pressure in the chamber will produce additional compression force on the sealing surface, further ensuring the excellent air tightness of the high-pressure sealing surface; because no high-pressure gas flows into the heating module wiring chamber 13, there is no need for special sealing design to prevent high-pressure leakage for the connector interface 51, connector pins 52 and front end cover 10, which simplifies the design of corresponding components and reduces product costs.

[0043] Reference Figure 8The present invention also provides a vehicle suspension air supply system, including a dryer element 16, an electric heating drive and feedback harness 17, an air supply system electronic control unit 18, an air supply system valve body assembly 19, a first air pipe 22 and a second air pipe 23. The dryer element 16 uses the above-mentioned dryer with an electric heating module. The two air nozzle interfaces 14 on the dryer element 16 are respectively connected to the air supply system valve body assembly 19 through the first air pipe 22 and the second air pipe 23 to provide a gas drying and flow path; the connector assembly 5 is electrically connected to the air supply system electronic control unit 18 through the electric heating drive and feedback harness 17, and the air supply system electronic control unit 18 is electrically connected to the air supply system valve body assembly 19. In this embodiment, the electric heating drive and feedback harness 17, the air supply system electronic control unit 18, and the air supply system valve body assembly 19 are all prior arts and will not be described in detail.

[0044] When regenerating the desiccant in the dryer element 16, the air supply system electronic control unit 18 provides power to the dryer element 16 through the electric heating drive and feedback harness 17, starts heating, and monitors the temperature of the heating element component 4 at the same time; when the heating temperature rises to the set range, the air supply system electronic control unit 18 controls the air supply system valve body component 19 to switch to the back-blowing air path, inhales dry gas through the first air pipe 22 and the second air pipe 23, and blows out gas containing water vapor to the outside of the system.

[0045] The above is only a preferred embodiment of the present invention, and is not any formal or substantial limitation of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the present invention, and these improvements and supplements should also be regarded as the protection scope of the present invention. Any technician familiar with this profession, without departing from the spirit and scope of the present invention, can make some changes, modifications and equivalent changes made by using the technical content disclosed above, which are equivalent embodiments of the present invention; at the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments based on the essential technology of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A dryer with an electric heating module, characterized in that: The invention comprises a dryer shell (1), wherein an end surface structure (11) is provided in the dryer shell (1), and the inner cavity of the dryer shell (1) is divided by the end surface structure (11) to form two independent chambers, one of which is a desiccant chamber (12) and the other is a heating module wiring chamber (13), at least one heating module sleeve (2) is passed through the end surface structure (11), and the two ends of the heating module sleeve (2) extend into the two independent chambers respectively, and two heating module sleeves (2) are provided on the outer wall of the dryer shell (1) at intervals and are connected to the desiccant chamber (12). The heating module sleeve (2) is provided with a desiccant drying component (3) between the outer wall between the two air nozzle interfaces (14) and the inner wall of the dryer shell (1), a heating element component (4) is provided in the heating module sleeve (2), and a connector component (5) is provided on the outer wall of one side of the heating module wiring chamber (13) of the dryer shell (1) for connecting to an external power supply, and one end of the heating element component (4) located in the heating module wiring chamber (13) is electrically connected to the connector component (5).

2. The dryer with electric heating module according to claim 1, characterized in that: The desiccant drying component (3) comprises a filter felt (31), a perforated baffle (32) and a desiccant material (33); two filter felts (31) are provided and are sleeved and fixed on the outer wall of the heating module sleeve (2) at intervals; the desiccant material (33) is filled between the two filter felts (31); two perforated baffles (32) are provided and are sleeved and fixed on the outer wall of the heating module sleeve (2) on the side opposite to each other of the two filter felts (31); the perforated baffle (32) is pressed together with the filter felt (31); and the outer walls of the filter felt (31) and the perforated baffle (32) are both gap-matched with the inner wall of the inner cavity of the dryer shell (1).

3. The dryer with electric heating module according to claim 1, characterized in that: The end face structure (11) is provided with a connecting hole (111) connecting the desiccant chamber (12) and the heating module wiring chamber (13); the heating module sleeve (2) is inserted into the connecting hole (111); a boss (21) is provided on the outer wall of the heating module sleeve (2) located in the desiccant chamber (12); the side wall surface of the boss (21) is in contact with the end face of the end face structure (11); a locking piece (7) is detachably provided on the outer wall of the heating module sleeve extending into the heating module wiring chamber (13); the locking piece (7) is clamped on the end face of the end face structure (11).

4. The dryer with electric heating module according to claim 3, characterized in that: A groove (112) is provided at an opening of one side of the communicating hole (111) facing the boss (21), wherein the groove (112) includes but is not limited to a chamfered or arc-shaped groove body, and a sealing ring (6) is embedded in the groove (112).

5. The dryer with electric heating module according to claim 3, characterized in that: The dryer housing (1) is opened at one side of the desiccant chamber (12) and is detachably provided with a rear end cover (8), and an elastic member (9) is provided between the inner wall of the rear end cover (8) and the desiccant drying assembly (3) to press and fix the desiccant drying assembly (3) in the desiccant chamber (12).

6. The dryer with electric heating module according to claim 3, characterized in that: The locking member (7) includes but is not limited to a retaining spring locking member (7) or a threaded locking member (7).

7. The dryer with electric heating module according to claim 1, characterized in that: The dryer housing (1) is located at a side opening of the heating module wiring chamber (13) and is detachably provided with a front end cover (10).

8. The dryer with electric heating module according to claim 7, characterized in that: The connector assembly (5) is arranged on the outer wall of the dryer housing (1) or on the front end cover (10).

9. The dryer with electric heating module according to claim 8, characterized in that: The connector assembly (5) comprises a connector interface (51) and a connector pin (52); the connector interface (51) is arranged on the outer wall of the dryer housing (1) or on the front end cover (10); the connector pin (52) is arranged on the connector interface (51), with one end located in the connector interface (51) and the other end extending into the wiring chamber (13) of the heating module; the end of the connector pin (52) extending into the wiring chamber (13) of the heating module is electrically connected to the heating element assembly (4) via a lead wire (15).

10. A vehicle suspension air supply system, comprising a dryer element (16), an electric heating drive and feedback harness (17), an air supply system electronic control unit (18), an air supply system valve body assembly (19), a first air pipe (22) and a second air pipe (23), characterized in that: The dryer element (16) uses a dryer with an electric heating module as described in any one of claims 1 to 9, and the two air nozzle interfaces (14) on the dryer element (16) are connected to the air supply system valve body assembly (19) through the first air pipe (22) and the second air pipe (23), respectively, and the connector assembly (5) and the air supply system electronic control unit (18) are electrically connected through the electric heating drive and feedback harness (17), and the air supply system electronic control unit (18) is electrically connected to the air supply system valve body assembly (19).

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