Air suspension drying tank and system

Abstract

The utility model relates to an air suspension drying tank and system, and the drying tank comprises a tank body which is internally provided with a drying chamber and an electrical element; one end of the cable is connected with an electrical element, and the other end penetrates through the bottom of the tank body and extends; the pin is arranged outside the tank body and is connected with one end, extending out of the tank body, of the cable; the sealing element comprises a through hole pipeline, a ventilation plate, a rubber plug and sealant, the through hole pipeline is located in the tank body, the bottom end of the through hole pipeline penetrates through the bottom of the tank body and allows the cable to penetrate through, the ventilation plate is inserted into the top of the through hole pipeline, and the rubber plug is plugged into the ventilation plate and extends into the through hole pipeline; the cable penetrates through the rubber plug and penetrates out of the tank body from the bottom end of the through hole pipeline, and the through hole pipeline is filled with the sealant. Compared with the prior art, the utility model has high sealing performance, can meet the requirement of high leakage rate level, and greatly reduces the leakage risk.

Description

Technical Field

[0001] This utility model relates to the field of automotive technology, and in particular to an air suspension drying tank and system. Background Technology

[0002] As air suspension becomes increasingly prevalent in mid-to-high-end vehicles, it is evolving towards higher standards and greater controllability. Air suspension systems include open and closed types. In recent years, most new manufacturers have favored the development of closed suspension systems. Compared to open systems, closed suspension systems offer faster response and lower air consumption. However, closed air suspension dryers require high sealing performance; leaks will increase the frequency of air compressor starts and reduce compressor lifespan.

[0003] Current trends indicate that drying jars will incorporate various electrical components for heating, heat source control, and humidity control, requiring external pins to connect to the cables of these components. This necessitates significant adjustments to the sealing method of the drying jar and places higher demands on its airtightness, currently generally requiring a leakage rate of 1E-5 mbar.l / s. Currently, the market uses integrated injection-molded electrical connectors to connect the pins and cables, with the connection sealed with adhesive (e.g., ...). Figure 1 and 2 (As shown). However, the thickness of the adhesive coating cannot be controlled. If the coating is too thick, it will affect the connection between the pins and the cable, leading to loose connections, unstable signal transmission, frequent disconnections, increased contact resistance, overheating, and safety risks. Furthermore, it is prone to falling off due to vibration during vehicle operation. If the coating is too thin, the leakage rate level is often stable at 1E-3 mbar.l / s, which cannot meet the leakage rate requirement of 1E-5 mbar.l / s.

[0004] Patent publication number CN117922222A discloses an on-board air spring supply valve assembly and supply unit. The ECU control unit is directly connected to the distribution valve assembly. The ECU control unit includes a PCBA circuit board, and the distribution valve assembly includes multiple solenoid valves, each electrically connected to the PCBA circuit board. Pins are inserted and fixed into sockets on the PCBA circuit board, and the housing is integrally injection molded. It uses an integral injection molded electrical connector and adhesive application for sealing. However, the pressure in the ECU control unit is much lower than the pressure in the dryer canister. Therefore, this sealing method is suitable for ECU control units and dryer canisters with leakage rate requirements of 1E-3 mbar.l / s, but not for dryer canisters with leakage rate requirements of 1E-5 mbar.l / s. Utility Model Content

[0005] The purpose of this invention is to overcome the defects of the prior art by providing an air-suspended drying tank and system with high sealing performance, which can meet the requirements of high leakage rate and greatly reduce the risk of leakage.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] In one aspect, this utility model provides an air-suspended drying canister, the drying canister comprising:

[0008] The tank contains a drying chamber filled with desiccant and electrical components.

[0009] A cable with one end connected to the electrical component and the other end passing through the bottom of the tank and extending outwards;

[0010] A pin is disposed on the outside of the tank and connected to one end of the cable extending out of the tank.

[0011] And a sealing element for sealing the connection between the tank and the cable, comprising a through-hole pipe, a vent plate, a rubber plug, and sealant, wherein the through-hole pipe is located inside the tank and its bottom end passes through the bottom of the tank and through which the cable passes, the vent plate is inserted into the top of the through-hole pipe, the rubber plug is inserted into the vent plate and extends into the through-hole pipe, the cable passes through the rubber plug and exits the tank from the bottom end of the through-hole pipe, and the sealant fills the inside of the through-hole pipe.

[0012] Furthermore, an air outlet is provided at the bottom of the tank, and the through-hole pipe is provided on one side of the air outlet; an air inlet is provided at the top of the tank.

[0013] Furthermore, the vent plate is disposed at the bottom of the drying chamber, and the surface of the vent plate is provided with a plurality of vent holes for gas to pass through. The bottom of the vent plate is provided with a connecting ring for insertion into the through-hole pipe.

[0014] Furthermore, the diameter of the vent plate is the same as the inner diameter of the tank.

[0015] Furthermore, a sealing ring is provided between the through-hole pipe and the connecting ring.

[0016] Furthermore, the sealing ring is made of ethylene propylene diene monomer (EPDM) rubber.

[0017] Furthermore, the upper surface of the vent plate is also provided with a powder-proof sheet to prevent the desiccant from flowing out after being crushed.

[0018] Furthermore, the desiccant is a conventional desiccant in the art, including silica gel and molecular sieves.

[0019] Furthermore, the through-hole pipe includes a first pipe and a second pipe located at its top, the inner diameter of the second pipe being larger than the inner diameter of the first pipe, and a support surface for supporting the vent plate is formed at the connection between the first pipe and the second pipe.

[0020] Furthermore, the depth ratio of the first pipe to the second pipe is 11–12:1.9–2.1. The height of the connecting ring is consistent with the depth of the first pipe.

[0021] Furthermore, the inner diameter ratio of the first pipe and the second pipe is 5 to 6:2.

[0022] Furthermore, the rubber plug is provided with a through hole for the cable to pass through. The cable passes through the through hole, and then the rubber plug is inserted into the vent plate. Through tapered compression, the cable and the rubber plug are made to fit tightly together.

[0023] Furthermore, the sealant has a thickness of 13-15 mm and is used to seal the through-hole pipe, cable, vent plate, and rubber plug.

[0024] Furthermore, the rubber stopper is made of EPDM.

[0025] Furthermore, the sealant is an epoxy resin sealant.

[0026] Furthermore, the pin is connected to the outer wall of the can via the housing.

[0027] Furthermore, the shell and the tank are integrally injection molded.

[0028] Furthermore, the pin does not penetrate the side wall of the can; it is located on the outside of the can, where there is no risk of leakage.

[0029] Furthermore, the electrical components are disposed between the drying chamber and the tank.

[0030] Furthermore, the distance between the drying chamber and the tank body is 5-15 mm.

[0031] Furthermore, the cable passes upward through the rubber plug and connects to the electrical component, with the distance between the electrical component and the rubber plug being 3-4 mm.

[0032] Furthermore, the cable sheath located outside the tank is provided with a protective layer.

[0033] Furthermore, the cable is a conventional cable in the art, used for transmitting electrical energy and signals, including positive and negative conductors.

[0034] Furthermore, the cable is electrically connected to the pin.

[0035] Furthermore, the protective layer is an insulating protective adhesive layer, used to protect the cable and also to prevent operators from accidentally touching it and causing safety problems when the cable leaks electricity.

[0036] Furthermore, the electrical components are conventional electrical components in the art, such as heating elements (heating films, resistance wire heaters), temperature sensors (such as NTC thermistors, thermocouples), microcontrollers (MCUs), solid-state relays, current sensors, fuses, communication modules (CAN buses), HMIs, and protection circuits (TVS diodes).

[0037] Furthermore, the drying chamber inside the tank adopts a conventional configuration in the art. The top of the drying chamber is provided with a dust-proof sheet to prevent the desiccant from flowing out and a vent plate to allow gas to flow out. The top of the vent plate is provided with a pre-compression spring for adjusting the height of the filled desiccant.

[0038] On the other hand, the present invention also provides an air suspension system, which includes the aforementioned air suspension drying tank, and the air suspension system further includes an air compressor, an air storage tank, and an air spring connected to the drying tank.

[0039] Furthermore, the air compressor is connected to the air inlet, the air tank is connected to the air inlet, and the air spring is connected to the dryer, air compressor, and air tank. Other structures of the air suspension system employ conventional techniques in the art.

[0040] Compared with the prior art, the present invention has the following advantages:

[0041] (1) Traditional drying cans use pins that pass through the side wall of the can to connect to electrical component cables inside the can, enabling signal transmission. Adhesive is then applied to the interface between the can and the pins for sealing. This invention, however, leads the cable to the outside of the can and connects it to the pins outside the can, thus sealing the interface between the cable and the can. This avoids the risk of excessive adhesive application affecting the cable and pin connection, leading to a loose connection. This significantly improves the performance of the drying can, achieving a leakage rate of 1E-5 mbar.l / s.

[0042] (2) By filling the through-hole pipe with a relatively thick layer of sealant, this utility model allows for the risk of poor sealing in some layers during the coating process. The sealing performance can be compensated for by other layers. Furthermore, the elastic deformation of the sealant greatly increases the deformation capacity after adhesion, ensuring that the sealant adheres firmly to the cable surface regardless of cable expansion or contraction, without affecting electrical performance. In addition, this design reduces the requirements for the coating process during actual mass production, avoiding leakage caused by unstable coating processes.

[0043] (3) This utility model achieves a two-stage seal by using a rubber plug and a sealant. First, by setting a rubber plug to connect with the cable, the gas passing through the sealant is buffered, so that only a portion of the gas will pass through the connection between the rubber plug and the cable and then reach the sealant, thereby reducing the gas pressure on the filled sealant and thus achieving a better sealing effect.

[0044] (4) By setting a sealing ring between the connecting ring of the vent plate and the through-hole pipe, this utility model can isolate a large amount of gas and reduce the pressure of the gas impacting the sealant together with the rubber plug.

[0045] (5) This utility model adopts a method of leading the cable out to the outside of the tank, connecting the cable to the pin outside the tank, and then sealing the interface between the cable and the tank. This method is not limited by the distance between the drying chamber and the tank or by the manufacturing process. If the pin is extended and then inserted into the tank to connect the cable, it will be limited by the distance between the tanks and the manufacturing process, making it difficult to implement. In addition, the pin is usually a standard part and its length cannot be changed. If it is forcibly extended, it will greatly increase the production cost. Attached Figure Description

[0046] Figure 1 A three-dimensional structural diagram of a traditional drying can where cables and pins are connected inside the can.

[0047] Figure 2 A cross-sectional view of a traditional drying can where cables and pins are connected inside the can.

[0048] Figure 3 This is a three-dimensional structural schematic diagram of the drying tank in Example 1;

[0049] Figure 4 This is a front view of the drying tank shown in Example 1;

[0050] Figure 5 This is a cross-sectional view of the drying tank shown in Example 1;

[0051] Figure 6 A schematic diagram of the seal ( Figure 4 (Enlarged schematic diagram of part A in the middle).

[0052] 1-Tank body, 11-Drying chamber, 12-Electrical components, 13-Powder shield, 14-Air outlet, 15-Air inlet, 16-Preload spring;

[0053] 2-Cables;

[0054] 3-pin, 31-shell;

[0055] 4-Seal, 41-Through-hole pipe, 411-First pipe, 412-Second pipe, 413-Support surface, 42-Ventilation plate, 421-Connecting ring, 43-Rubber plug, 44-Sealant, 45-Sealing ring. Detailed Implementation

[0056] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The embodiments are implemented based on the technical solution of the present invention, providing detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments. In the following embodiments or examples, unless otherwise specified, the functional components or structures are conventional components or structures used in the art to achieve the corresponding functions.

[0057] It should be noted that in the description of this utility model, the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0058] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0059] An air-suspended drying canister, the drying canister comprising:

[0060] The tank 1 has a drying chamber 11 filled with desiccant and electrical components 12 inside;

[0061] A cable 2, one end of which is connected to the electrical component 12, and the other end passes through the bottom of the tank body 1 and extends outward;

[0062] Pin 3 is disposed outside the tank body 1 and connected to one end of the cable 2 extending out of the tank body 1;

[0063] And a sealing element 4 for sealing the connection between the tank body 1 and the cable 2, which includes a through-hole pipe 41, a vent plate 42, a rubber plug 43 and a sealant 44. The through-hole pipe 41 is located inside the tank body 1 and its bottom end passes through the bottom of the tank body 1 and allows the cable 2 to pass through. The vent plate 42 is inserted into the top of the through-hole pipe 41. The rubber plug 43 is inserted into the vent plate 42 and extends into the through-hole pipe 41. The cable 2 passes through the rubber plug 43 and exits the tank body 1 from the bottom end of the through-hole pipe 41. The sealant 44 fills the inside of the through-hole pipe 41.

[0064] In some specific embodiments, the bottom of the tank body 1 is provided with an air outlet 14, and the through-hole pipe 41 is provided on one side of the air outlet 14; the top of the tank body 1 is provided with an air inlet 15.

[0065] In a specific embodiment, the vent plate 42 is disposed at the bottom of the drying chamber 11, the surface of the vent plate 42 is provided with a plurality of vent holes for gas to pass through, and the bottom of the vent plate 42 is provided with a connecting ring 422 for insertion into the through-hole pipe 41.

[0066] In some specific embodiments, the diameter of the vent plate 42 is the same as the inner diameter of the tank body 1.

[0067] In some specific embodiments, a sealing ring 45 is provided between the through-hole pipe 41 and the connecting ring 422.

[0068] In some specific embodiments, the sealing ring 45 is made of EPDM.

[0069] In some specific embodiments, the upper surface of the vent plate 42 is also provided with a desiccant anti-powder sheet 13 to prevent the desiccant from flowing out after being crushed.

[0070] In some specific embodiments, the desiccant is a conventional desiccant in the art, including silica gel and molecular sieves.

[0071] In some specific embodiments, the through-hole pipe 41 includes a first pipe 411 and a second pipe 412 located at its top, the inner diameter of the second pipe 412 being larger than the inner diameter of the first pipe 411, and a support surface 413 for supporting the vent plate 42 is formed at the connection between the first pipe 411 and the second pipe 412.

[0072] In some specific embodiments, the depth ratio of the first pipe 411 to the second pipe 412 is 11-12:1.9-2.1. The height of the connecting ring 422 is the same as the depth of the first pipe 411.

[0073] In some specific embodiments, the inner diameter ratio of the first pipe 411 and the second pipe 412 is 5 to 6:2.

[0074] In some specific embodiments, the rubber plug 43 is provided with a through hole for the cable 2 to pass through. The cable 2 passes through the through hole, and then the rubber plug 43 is inserted into the vent plate 42. Through tapered compression, the cable 2 and the rubber plug 43 are made to fit tightly together.

[0075] In some specific embodiments, the sealant 44 has a thickness of 13-15 mm and is used to seal the through-hole pipe 41, cable 2, vent plate 42, and rubber plug 43.

[0076] In some specific embodiments, the rubber stopper 43 is made of EPDM.

[0077] In some specific embodiments, the sealant 44 is an epoxy resin sealant.

[0078] In some specific embodiments, the pin 3 is connected to the outer wall of the can 1 via the housing 31.

[0079] In some specific embodiments, the shell 31 and the tank 1 are integrally injection molded.

[0080] In some specific embodiments, the pin 3 does not pass through the side wall of the can 1, but is located on the outside of the can 1, where there is no risk of leakage.

[0081] In some specific embodiments, the distance between the drying chamber 11 and the tank body 11 is 5 to 15 mm.

[0082] In some specific embodiments, the cable 2 passes upward through the rubber plug 43 and connects to the electrical component 12, and the distance between the electrical component 12 and the rubber plug 43 is 3-4 mm.

[0083] In some specific embodiments, the cable 2 located outside the tank is covered with a protective layer 21.

[0084] In some specific embodiments, the cable 2 is a conventional cable in the art, used for transmitting electrical energy and signals, including positive and negative conductors.

[0085] In some specific embodiments, the cable 2 is plugged into the pin 3 to achieve electrical connection.

[0086] In some specific embodiments, the protective layer 21 is an insulating protective adhesive layer used to protect the cable 2 and also to prevent operators from accidentally touching the cable 2 when it leaks current, which could cause safety problems.

[0087] In some specific embodiments, the electrical component 12 adopts conventional electrical components in the art, such as heating elements (heating film, resistance wire heater), temperature sensors (such as NTC thermistors, thermocouples), microcontrollers (MCUs), solid-state relays, current sensors, fuses, communication modules (CAN bus), HMIs, and protection circuits (TVS diodes).

[0088] In some specific embodiments, the drying chamber 11 inside the tank 1 adopts a conventional configuration in the art. The top of the drying chamber 11 is provided with a dust-proof sheet 45 for preventing the desiccant from flowing out and a vent plate 42 for gas to flow out. The top of the vent plate 42 is provided with a pre-compression spring 16 for adjusting the height of the filled desiccant.

[0089] An air suspension system includes the aforementioned air suspension dryer, and the air suspension system further includes an air compressor, an air tank, and an air spring connected to the dryer.

[0090] In some specific embodiments, the air compressor is connected to the air inlet 15, the air tank is connected to the air inlet 14, and the air spring is connected to the dryer, the air compressor, and the air tank. Other structures of the air suspension system employ conventional techniques in the art.

[0091] Each of the above embodiments can be implemented individually or in any combination of two or more.

[0092] The following description uses specific examples to illustrate the point.

[0093] Example 1

[0094] An air-suspended drying canister, such as Figures 3-6 As shown, the drying tank includes:

[0095] The tank 1 has a drying chamber 11 filled with desiccant and electrical components 12 inside;

[0096] A cable 2, one end of which is connected to the electrical component 12, and the other end passes through the bottom of the tank body 1 and extends outward;

[0097] Pin 3 is disposed outside the tank body 1 and connected to one end of the cable 2 extending out of the tank body 1;

[0098] And a sealing element 4 for sealing the connection between the tank body 1 and the cable 2, which includes a through-hole pipe 41, a vent plate 42, a rubber plug 43 and a sealant 44. The through-hole pipe 41 is located inside the tank body 1 and its bottom end passes through the bottom of the tank body 1 and allows the cable 2 to pass through. The vent plate 42 is inserted into the top of the through-hole pipe 41. The rubber plug 43 is inserted into the vent plate 42 and extends into the through-hole pipe 41. The cable 2 passes through the rubber plug 43 and exits the tank body 1 from the bottom end of the through-hole pipe 41. The sealant 44 fills the inside of the through-hole pipe 41.

[0099] In this embodiment, the bottom of the tank 1 is provided with an air outlet 14, and the through-hole pipe 41 is provided on one side of the air outlet 14; the top of the tank 1 is provided with an air inlet 15.

[0100] In this embodiment, the vent plate 42 is disposed at the bottom of the drying chamber 11, and the surface of the vent plate 42 is provided with a plurality of vent holes for gas to pass through. The bottom of the vent plate 42 is provided with a connecting ring 421 for insertion into the through-hole pipe 41.

[0101] In this embodiment, the diameter of the vent plate 42 is the same as the inner diameter of the tank body 1.

[0102] In this embodiment, a sealing ring 45 is provided between the through-hole pipe 41 and the connecting ring 421. The sealing ring 45 is made of EPDM.

[0103] In this embodiment, the upper surface of the ventilation plate 42 is also provided with a desiccant anti-powder sheet 13 to prevent the desiccant from flowing out after being crushed.

[0104] In this embodiment, the desiccant molecular sieve is also a conventional desiccant in the art, such as silica gel.

[0105] In this embodiment, the through-hole pipe 41 includes a first pipe 411 and a second pipe 412 located at its top. The inner diameter of the second pipe 412 is larger than the inner diameter of the first pipe 411. A support surface 413 for supporting the vent plate 42 is formed at the connection between the first pipe 411 and the second pipe 412.

[0106] In this embodiment, the depths of the first pipe 411 and the second pipe 412 are 12 mm and 2 mm, respectively, with a depth ratio of 6:1. The height of the connecting ring 421 is the same as the depth of the first pipe 411.

[0107] In this embodiment, the inner diameters of the first pipe 411 and the second pipe 412 are 5.6 mm and 2 mm, respectively, and their inner diameter ratio is 2.8:1.

[0108] In this embodiment, the rubber plug 43 is provided with a through hole for the cable 2 to pass through. The cable 2 passes through the through hole, and then the rubber plug 43 is inserted into the vent plate 42. Through tapered compression, the cable 2 and the rubber plug 43 are made to fit tightly together.

[0109] In this embodiment, the sealant 44 has a thickness of 14mm and is used to seal the through-hole pipe 41, cable 2, vent plate 42, and rubber plug 43.

[0110] In this embodiment, the rubber stopper 43 is made of EPDM.

[0111] In this embodiment, the sealant 44 is an epoxy resin sealant, model ELAPLUS SIPA 3000.

[0112] In this embodiment, the cable 2 passes upward through the rubber plug 43 and connects to the electrical component 12, and the distance between the electrical component 12 and the rubber plug 43 is 5.5mm.

[0113] In this embodiment, the pin 3 is connected to the outer wall of the can 1 through the housing 31.

[0114] In this embodiment, the shell 31 and the tank 1 are integrally injection molded.

[0115] In this embodiment, the pin 3 does not pass through the side wall of the can 1, and it is located on the outside of the can 1, where there is no risk of leakage.

[0116] In this embodiment, the electrical component 12 is a heating element, disposed between the drying chamber 11 and the tank 1. The heating film is disposed on the outer wall of the drying chamber 11, and the distance between the drying chamber 11 and the tank 11 is 10 mm. The heating element is a PI heating film with a thickness of 0.2 mm. Alternatively, conventional heating elements in the art, such as resistance wire heaters or other heating elements, can also be used.

[0117] In this embodiment, the cable 2 located outside the tank is covered with a protective layer 21, which is an insulating protective adhesive layer used to protect the cable 2 and prevent operators from accidentally touching it when the cable 2 leaks electricity, thus avoiding safety problems.

[0118] In this embodiment, the cable 2 is a conventional cable in the art, used to transmit electrical energy and signals, including one positive wire and one negative wire, for a total of two wires.

[0119] In this embodiment, the cable 2 is plugged into the pin 3 to achieve electrical connection.

[0120] In this embodiment, the drying chamber 11 inside the tank 1 adopts a conventional configuration in the art. The top of the drying chamber 11 is provided with a dust-proof sheet 45 for preventing desiccant from flowing out and a vent plate 42 for gas to flow out. The top of the vent plate 42 is provided with a pre-compression spring 16 for adjusting the height of the filled desiccant.

[0121] In this embodiment, the working process and principle of the air-suspended drying tank are as follows:

[0122] A gas with a certain level of humidity enters the drying chamber 11 through the air inlet 15. The desiccant continues to adsorb the moisture in the gas, achieving the purpose of drying the gas. After drying, the gas flows out through the air inlet 14. When the desiccant is saturated with moisture, it is heated through the heating film to desorb the moisture. At this time, drying gas is introduced through the air inlet 14 to carry away the desorbed water vapor, thus regenerating the desiccant.

[0123] In this embodiment, the working process and principle of the sealing element 4 are as follows:

[0124] A sealing ring 45 is fitted over the connecting ring 421. The connecting ring 421 of the vent plate 41 is then inserted into the first pipe 411 of the vent pipe 41, so that it abuts against the support surface 413. The cable 2 passes through the through hole, and then the rubber plug 43 is inserted into the vent plate 42. Through tapered compression, the cable 2 and the rubber plug 43 are made to fit tightly together. Then, sealant 44 is filled into the second pipe 412 to a thickness of 14mm. After it cures, it can seal the through hole pipe 41, cable 2, vent plate 42, and rubber plug 43.

[0125] This embodiment uses a method of leading the cable out to the outside of the tank and connecting the cable to the pins outside the tank, thereby sealing the interface between the cable and the tank. This avoids the risk that excessive glue application will affect the cable and pin connection and lead to a loose connection, thus greatly improving the performance of the drying tank and achieving the required leakage rate level of 1E-5mbar.l / s.

[0126] Example 2

[0127] An air-suspended drying canister, compared to Example 1, Example 2 adds a temperature sensor. The drying canister includes:

[0128] The tank 1 has a drying chamber 11 filled with desiccant and electrical components 12 inside;

[0129] A cable 2, one end of which is connected to the electrical component 12, and the other end passes through the bottom of the tank body 1 and extends outward;

[0130] Pin 3 is disposed outside the tank body 1 and connected to one end of the cable 2 extending out of the tank body 1;

[0131] And a sealing element 4 for sealing the connection between the tank body 1 and the cable 2, which includes a through-hole pipe 41, a vent plate 42, a rubber plug 43 and a sealant 44. The through-hole pipe 41 is located inside the tank body 1 and its bottom end passes through the bottom of the tank body 1 and allows the cable 2 to pass through. The vent plate 42 is inserted into the top of the through-hole pipe 41. The rubber plug 43 is inserted into the vent plate 42 and extends into the through-hole pipe 41. The cable 2 passes through the rubber plug 43 and exits the tank body 1 from the bottom end of the through-hole pipe 41. The sealant 44 fills the inside of the through-hole pipe 41.

[0132] In this embodiment, the bottom of the tank 1 is provided with an air outlet 14, and the through-hole pipe 41 is provided on one side of the air outlet 14; the top of the tank 1 is provided with an air inlet 15.

[0133] In this embodiment, the vent plate 42 is disposed at the bottom of the drying chamber 11, and the surface of the vent plate 42 is provided with a plurality of vent holes for gas to pass through. The bottom of the vent plate 42 is provided with a connecting ring 421 for insertion into the through-hole pipe 41.

[0134] In this embodiment, the diameter of the vent plate 42 is the same as the inner diameter of the tank body 1.

[0135] In this embodiment, a sealing ring 45 is provided between the through-hole pipe 41 and the connecting ring 421. The sealing ring 45 is made of EPDM.

[0136] In this embodiment, the upper surface of the ventilation plate 42 is also provided with a desiccant anti-powder sheet 13 to prevent the desiccant from flowing out after being crushed.

[0137] In this embodiment, the desiccant molecular sieve is also a conventional desiccant in the art, such as silica gel.

[0138] In this embodiment, the through-hole pipe 41 includes a first pipe 411 and a second pipe 412 located at its top. The inner diameter of the second pipe 412 is larger than the inner diameter of the first pipe 411. A support surface 413 for supporting the vent plate 42 is formed at the connection between the first pipe 411 and the second pipe 412.

[0139] In this embodiment, the depths of the first pipe 411 and the second pipe 412 are 12 mm and 2 mm, respectively, with a depth ratio of 6:1. The height of the connecting ring 421 is the same as the depth of the first pipe 411.

[0140] In this embodiment, the inner diameters of the first pipe 411 and the second pipe 412 are 5.6 mm and 2 mm, respectively, and their inner diameter ratio is 2.8:1.

[0141] In this embodiment, the rubber plug 43 is provided with a through hole for the cable 2 to pass through. The cable 2 passes through the through hole, and then the rubber plug 43 is inserted into the vent plate 42. Through tapered compression, the cable 2 and the rubber plug 43 are made to fit tightly together.

[0142] In this embodiment, the sealant 44 has a thickness of 14mm and is used to seal the through-hole pipe 41, cable 2, vent plate 42, and rubber plug 43.

[0143] In this embodiment, the rubber stopper 43 is made of EPDM.

[0144] In this embodiment, the sealant 44 is an epoxy resin sealant, model ELAPLUS SIPA 3000.

[0145] In this embodiment, the pin 3 is connected to the outer wall of the can 1 through the housing 31.

[0146] In this embodiment, the shell 31 and the tank 1 are integrally injection molded.

[0147] In this embodiment, the pin 3 does not pass through the side wall of the can 1, and it is located on the outside of the can 1, where there is no risk of leakage.

[0148] In this embodiment, electrical component 12 includes a heating element (a heating film in this embodiment) and a temperature sensor, which are respectively connected to cable 2. The heating film is a PI heating film with a thickness of 0.2 mm, but conventional heating elements in the art, such as resistance wire heaters or other heating elements, can also be used. The temperature sensor is an NTC thermistor.

[0149] In this embodiment, the electrical component 12 is disposed between the drying chamber 11 and the tank 1, the heating film is disposed on the outer wall of the drying chamber 11, and the temperature sensor is disposed on the outer wall of the heating film.

[0150] In this embodiment, the distance between the drying chamber 11 and the tank body 11 is 10mm.

[0151] In this embodiment, the cable 2 passes upward through the rubber plug 43 and connects to the electrical component 12, and the distance between the electrical component 12 and the rubber plug 43 is 5.5mm.

[0152] In this embodiment, the cable 2 located outside the tank is covered with a protective layer 21, which is an insulating protective adhesive layer used to protect the cable 2 and prevent operators from accidentally touching it when the cable 2 leaks electricity, thus avoiding safety problems.

[0153] In this embodiment, the cable 2 is a conventional cable in the art, used for transmitting electrical energy and signals, including positive and negative wires. This embodiment has four wires: two positive wires and two negative wires. One positive wire and one negative wire are respectively connected to the heating film and the temperature sensor.

[0154] In this embodiment, the cable 2 is plugged into the pin 3 to achieve electrical connection.

[0155] In this embodiment, the drying chamber 11 inside the tank 1 adopts a conventional configuration in the art. The top of the drying chamber 11 is provided with a dust-proof sheet 45 for preventing desiccant from flowing out and a vent plate 42 for gas to flow out. The top of the vent plate 42 is provided with a pre-compression spring 16 for adjusting the height of the filled desiccant.

[0156] In this embodiment, the working process and principle of the air-suspended drying tank are as follows:

[0157] A gas with a certain level of humidity enters the drying chamber 11 through the air inlet 15. The desiccant continues to adsorb moisture from the gas, achieving the purpose of drying. After drying, the gas flows out through the air inlet 14. When the desiccant becomes saturated with moisture, it is heated by the heating film, causing the moisture in the desiccant to desorb. At this time, drying gas is introduced through the air inlet 14 to carry away the desorbed water vapor, thus regenerating the desiccant. A temperature sensor is used to detect the temperature of the heating film, and the control process is controlled by the on / off switch at the vehicle end.

[0158] In this embodiment, the working process and principle of the sealing element 4 are as follows:

[0159] A sealing ring 45 is fitted over the connecting ring 421. The connecting ring 421 of the vent plate 41 is then inserted into the first pipe 411 of the vent pipe 41, so that it abuts against the support surface 413. The cable 2 passes through the through hole, and then the rubber plug 43 is inserted into the vent plate 42. Through tapered compression, the cable 2 and the rubber plug 43 are made to fit tightly together. Then, sealant 44 is filled into the second pipe 412 to a thickness of 14mm. After it cures, it can seal the through hole pipe 41, cable 2, vent plate 42, and rubber plug 43.

[0160] This embodiment uses a method of leading the cable out to the outside of the tank and connecting the cable to the pins outside the tank, thereby sealing the interface between the cable and the tank. This avoids the risk that excessive glue application will affect the cable and pin connection and lead to a loose connection, thus greatly improving the performance of the drying tank and achieving the required leakage rate level of 1E-5mbar.l / s.

[0161] Example 3

[0162] An air suspension system includes the air suspension drying tank described in Example 1, and the air suspension system further includes an air compressor, an air tank, and an air spring connected to the drying tank.

[0163] In this embodiment, the air compressor is connected to the air inlet 15, the air tank is connected to the air inlet 14, and the air spring is connected to the dryer, the air compressor, and the air tank. Other structures of the air suspension system employ conventional techniques in the art.

[0164] Example 4

[0165] An air suspension system includes the air suspension drying tank described in Embodiment 2, and the air suspension system further includes an air compressor, an air tank, and an air spring connected to the drying tank.

[0166] In this embodiment, the air compressor is connected to the air inlet 15, the air tank is connected to the air inlet 14, and the air spring is connected to the dryer, the air compressor, and the air tank. Other structures of the air suspension system employ conventional techniques in the art.

[0167] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. An air suspension drying tank characterized by, The drying tank includes: The tank (1) has a drying chamber (11) filled with desiccant and electrical components (12) inside; A cable (2) with one end connected to the electrical component (12) and the other end passing through the bottom of the tank (1) and extending outward; A pin (3) is disposed outside the tank (1) and connected to one end of the cable (2) extending out of the tank (1); And a sealing element (4) for sealing the connection between the tank (1) and the cable (2), comprising a through-hole pipe (41), a vent plate (42), a rubber plug (43) and sealant (44), the through-hole pipe (41) being located inside the tank (1) and having its bottom end passing through the bottom of the tank (1) and through which the cable (2) passes, the vent plate (42) being inserted into the top of the through-hole pipe (41), the rubber plug (43) being inserted into the vent plate (42) and extending into the through-hole pipe (41), the cable (2) passing through the rubber plug (43) and exiting the tank (1) from the bottom end of the through-hole pipe (41), and the sealant (44) filling the inside of the through-hole pipe (41).

2. An air suspension drying vessel according to claim 1, wherein, The tank (1) has an air outlet (14) at the bottom and a through-hole pipe (41) on one side of the air outlet (14); the tank (1) has an air inlet (15) at the top.

3. An air suspension drying vessel as claimed in claim 1, wherein, The ventilation plate (42) is located at the bottom of the drying chamber (11). The surface of the ventilation plate (42) is provided with a plurality of ventilation holes for gas to pass through. The bottom of the ventilation plate (42) is provided with a connecting ring (422) for insertion into the through-hole pipe (41).

4. An air suspension drying vessel according to claim 3, wherein, A sealing ring (45) is provided between the through-hole pipe (41) and the connecting ring (422).

5. An air suspension drying vessel as claimed in claim 1, wherein, The upper surface of the ventilation plate (42) is also provided with a desiccant anti-powder sheet (13) to prevent the desiccant from flowing out.

6. An air suspension drying vessel according to claim 1, wherein The through-hole pipe (41) includes a first pipe (411) and a second pipe (412) located at its top. The inner diameter of the second pipe (412) is larger than the inner diameter of the first pipe (411). A support surface (413) for supporting the vent plate (42) is formed at the connection between the first pipe (411) and the second pipe (412).

7. An air suspension drying vessel as claimed in claim 1, wherein, The thickness of the sealant (44) is 13-15 mm.

8. An air suspension drying vessel according to claim 1 wherein, The pin (3) is connected to the outer wall of the can (1) through the housing (31).

9. An air suspension drying vessel according to claim 1 wherein, The electrical component (12) is disposed between the drying chamber (11) and the tank (1).

10. An air suspension system characterized by, It includes the air-suspended drying tank as described in any one of claims 1 to 9, and the air suspension system further includes an air compressor, an air tank, and an air spring connected to the drying tank.

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