Air dryer and vehicle with same

Abstract

The utility model discloses an air dryer and a vehicle with the same. The air dryer comprises a shell and a heating device, the shell is provided with a drying cavity used for containing a drying agent, a first inlet-outlet and a second inlet-outlet, the first inlet-outlet and the second inlet-outlet are both communicated with the drying cavity, the first inlet-outlet is used for being connected with an air compressor, the second inlet-outlet is used for being connected with an air storage tank, and the heating device is connected with the shell. And the drying agent is heated. The air dryer disclosed by the embodiment of the utility model has a better cleaning effect on moisture and impurities adsorbed by a drying agent and is higher in regeneration efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile air drying equipment, in particular to an air dryer and a vehicle with the same. Background Art

[0002] The function of the car air dryer is to dry and filter the air, prevent moisture and impurities from entering the car's suspension system with the air, and keep the car's suspension system sensitive and effective. The air dryer has a certain regeneration function to remove moisture and impurities from the desiccant, restore its adsorption capacity, and ensure that the air dryer can continue to work effectively.

[0003] In the related art, air dryers use compressed air to flow in reverse through the desiccant to remove moisture and impurities adsorbed on the surface of the desiccant, i.e., back-blowing desorption, to achieve desiccant regeneration. However, back-blowing regeneration is greatly affected by temperature and humidity, and the regeneration efficiency is unstable. At the same time, the back-blowing airflow mainly acts on the surface of the desiccant, and has limited effect on removing deep-layer adsorbed impurities, resulting in low desiccant regeneration efficiency. Utility Model Content

[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the utility model provides an air dryer, which has a better effect of removing moisture and impurities adsorbed by a desiccant and a higher regeneration efficiency.

[0006] The air dryer of an embodiment of the utility model includes a shell and a heating device, the shell having a drying chamber for accommodating a desiccant, a first inlet and a second inlet, the first inlet and the second inlet are both connected to the drying chamber, the first inlet and the second inlet are used to connect to an air compressor, the second inlet and the second inlet are used to connect to an air tank, and the heating device is connected to the shell to heat the desiccant.

[0007] In some embodiments, a filter element is disposed on at least one axial side of the drying chamber, and the filter element includes a fitting surface for fitting the desiccant.

[0008] In some embodiments, the filter element includes a stop surface disposed opposite to the fitting surface, and a stop member is disposed on at least one axial side of the drying chamber, and the stop member abuts against the stop surface.

[0009] In some embodiments, the shell includes end covers arranged opposite to each other along the axial direction of the drying chamber, and the stop member is arranged between the filter element and the end cover on the same axial side of the drying chamber, and the end surface of the stop member facing away from the filter element stops at the end cover.

[0010] In some embodiments, the shell includes a cylinder and a cover body, the cylinder extends axially along the drying chamber, one axial end of the cylinder is provided with an opening, and the other end is provided with a cylinder bottom, the cover body is connected to the cylinder and blocks the opening, and the cylinder bottom and the cover body both form the end cover; the air dryer also includes an elastic member, which is arranged between the stop member and the cylinder bottom, and the elastic member is used to apply a biasing force toward the filter element to the stop member.

[0011] In some embodiments, the stop member has a channel penetrating along the axial direction of the drying chamber.

[0012] In some embodiments, the stop member includes a plate body and a protrusion, the surface of the plate body facing the filter element abuts against the filter element, the plate body has a through hole extending axially through the drying chamber, the protrusion is provided on a side of the plate body facing away from the filter element, and an end of the protrusion facing away from the plate body abuts against the shell.

[0013] In some embodiments, the heating device includes a rod portion, which is connected to the shell and inserted into the drying chamber; the rod portion has a first limiting portion, and the stop member has a second limiting portion, and the first limiting portion stops at the second limiting portion along the axial direction of the drying chamber.

[0014] In some embodiments, the heating device further comprises a protective sleeve, wherein the protective sleeve is sleeved on the rod.

[0015] The vehicle of the embodiment of the utility model comprises an air tank, an exhaust valve, an air compressor and the air dryer described in any of the above embodiments, the air compressor and the exhaust valve are both connected to the first inlet and outlet, and the air tank is connected to the second inlet and outlet.

[0016] The air dryer of the embodiment of the utility model can realize the flow direction of the gas by changing the pressure difference. When the gas flows in the forward direction, the gas flows through the first inlet and outlet, the desiccant and the second inlet and outlet in sequence. This is the drying mode of the dryer, which can realize the drying of the gas; when the gas flows in the reverse direction, the gas flows through the second inlet and outlet, the desiccant and the first inlet and outlet in sequence. This is the regeneration mode of the dryer, which can realize the back-blowing desorption of the desiccant.

[0017] The desiccant is heated by a heating device so that the moisture and impurities deeply adsorbed by the desiccant are desorbed, and the desiccant can be desorbed and regenerated at a deeper level. Under the effects of the two regeneration methods of back-blowing desorption and heating desorption, the regeneration efficiency of the air dryer can be improved.

[0018] In addition, when the gas flows through the desiccant in the reverse direction, it can take away the impurities and moisture desorbed from the desiccant under the action of heating, thereby improving the impurity removal effect of the desiccant and further improving the regeneration efficiency of the desiccant. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model is a schematic diagram of the connection of an air dryer, an air storage tank and an exhaust valve of a car according to an embodiment of the utility model.

[0020] Figure 2 It is a schematic structural diagram of an air dryer according to an embodiment of the utility model (the one-way throttle valve is not shown).

[0021] Figure 3 It is a cross-sectional view of an air dryer according to an embodiment of the utility model.

[0022] Figure 4 It is a schematic diagram of an explosion of an air dryer according to an embodiment of the utility model.

[0023] Figure 5 The utility model is a schematic structural diagram of a heating rod and a heating sleeve of an air dryer according to an embodiment of the utility model.

[0024] Reference numerals:

[0025] 10. Air dryer;

[0026] 1. Shell; 11. Accommodating chamber; 111. Drying chamber; 112. Desiccant; 113. Positioning step; 12. First inlet and outlet; 121. First sealing ring; 13. Second inlet and outlet; 14. Cylinder; 141. Connecting part; 142. Cylinder bottom; 15. Cover; 151. Second sealing ring;

[0027] 2. Heating device; 21. Rod; 211. First limiting portion; 22. Head; 23. Mounting portion; 24. Protective cover;

[0028] 3. One-way throttle valve;

[0029] 41, first filter element; 411, fitting surface; 412, stop surface; 42, second filter element;

[0030] 51, first stop member; 511, plate body; 512, protrusion; 52, second stop member; 521, second limit portion;

[0031] 6. Elastic parts;

[0032] 7. Circlip;

[0033] 20. Gas storage tank;

[0034] 30. Exhaust valve;

[0035] 40. Air compressor;

[0036] 50. Solenoid valve. DETAILED DESCRIPTION

[0037] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0038] like Figure 1 and Figure 2 As shown, the vehicle includes an air dryer 10, an air tank 20, an exhaust valve 30 and an air compressor 40. The air dryer 10 has a first inlet and outlet 12 and a second inlet and outlet 13. The air compressor 40 and the exhaust valve 30 are both connected to the first inlet and outlet 12, and the air tank 20 is connected to the second inlet and outlet 13.

[0039] In the drying mode, the air is compressed by the air compressor 40 and flows forward through the air dryer 10, and then enters the air tank 20 for storage so as to be used in the vehicle's suspension system; in the regeneration mode, the air in the air tank 20 flows reversely through the air dryer 10 and is discharged through the exhaust valve 30.

[0040] like Figures 1 to 4 As shown, the air dryer 10 of the embodiment of the utility model includes a shell 1 and a heating device 2. The shell 1 has a drying chamber 111 for accommodating a desiccant 112, a first inlet and outlet 12 and a second inlet and outlet 13. The first inlet and outlet 12 and the second inlet and outlet 13 are both connected to the drying chamber 111. The first inlet and outlet 12 is used to connect to the air compressor 40, and the second inlet and outlet 13 is used to connect to the air tank 20. The heating device 2 is connected to the shell 1 to heat the desiccant 112.

[0041] The air dryer 10 of the utility model embodiment can realize the flow direction of the gas by changing the pressure difference. When the gas flows in the forward direction, the gas flows through the first inlet and outlet 12, the desiccant 112 and the second inlet and outlet 13 in sequence. This is the drying mode of the dryer, which can realize the drying of the gas; when the gas flows in the reverse direction, the gas flows through the second inlet and outlet 13, the desiccant 112 and the first inlet and outlet 12 in sequence. This is the regeneration mode of the dryer, which can realize the back-blowing desorption of the desiccant 112.

[0042] The desiccant 112 is heated by the heating device 2 so that the moisture and impurities deeply adsorbed by the desiccant 112 are desorbed, and the desiccant 112 can be desorbed and regenerated at a deeper level. Under the effects of the two regeneration methods of back-blowing desorption and heating desorption, the regeneration efficiency of the air dryer 10 can be improved.

[0043] In addition, when the gas flows through the desiccant 112 in the reverse direction, it can take away the impurities and moisture desorbed from the desiccant 112 under the action of heating, thereby improving the impurity removal effect of the desiccant 112 and further improving the regeneration efficiency of the desiccant 112.

[0044] It is understandable that, according to parameters such as the frequency and time of use of the desiccant 112, different regeneration modes may be selected for the air dryer 10, for example: only turning on the backflush regeneration function, only turning on the heating regeneration function, or turning on both the heating function and the regeneration function.

[0045] Specifically, the flow direction of the gas is achieved through pressure difference; in the drying mode, the air compressor 40 is in operation, and the pressure of the air increases after being compressed by the air compressor 40 (the pressure of the first inlet and outlet 12 is greater than the pressure of the second inlet and outlet 13), so that the air flows forward through the air dryer 10 and then enters the air storage tank 20 for storage; in the regeneration mode, the air compressor 40 is in the shutdown state, and the pressure in the air storage tank 20 is relatively large (the pressure of the second inlet and outlet 13 is greater than the pressure of the first inlet and outlet 12), and the gas in the air storage tank 20 flows reversely through the air dryer 10 and is discharged through the exhaust valve 30.

[0046] Furthermore, if Figure 1 As shown, a solenoid valve 50 is provided between the air storage tank 20 and the air dryer 10, and the solenoid valve 50 can control the on-off of the air path between the air dryer 10 and the air storage tank 20, thereby making it easier to control the air dryer 10 to switch between the drying mode and the regeneration mode.

[0047] Furthermore, if Figure 1 As shown, the air dryer 10 also includes a one-way throttle valve 3, which includes a first port, a second port and a third port. When gas flows in from the first port, it passes through the one-way control part of the one-way throttle valve 3 and flows out from the second port. At this time, the airflow is not affected by the one-way throttle valve 3, and the air pressure remains unchanged; when gas flows in from the second port, it passes through the throttling part of the one-way throttle valve 3 and flows out from the third port. The throttling part of the one-way throttle valve 3 can play a throttling regulating role on the gas.

[0048] The first port and the third port of the one-way throttle valve 3 are both connected to the second inlet and outlet 13, and the second port of the one-way throttle valve 3 is connected to the gas storage tank 20. In the drying mode, the gas flows through the air dryer 10 in the forward direction, and flows in from the first port of the one-way throttle valve 3 and flows out from the second port, and is then stored or used directly; in the regeneration mode, the gas flows in from the second port of the one-way throttle valve 3 and flows out from the third port, and the gas flows through the throttling part of the one-way throttle valve 3, which can adjust the gas pressure, so that the gas flows into the air dryer 10 at a suitable pressure, thereby realizing the desorption and regeneration of the desiccant 112 under the action of the pressure difference.

[0049] Furthermore, the one-way throttle valve 3 is arranged separately from the housing 1 , and the one-way throttle valve 3 can be installed on other carriers.

[0050] Thus, the overall weight of the components carried by the housing 1 can be reduced, thereby making it easier to transport and install the housing 1.

[0051] Of course, in other embodiments, the one-way throttle valve 3 can also be installed on the housing 1 .

[0052] Furthermore, if Figure 3 and Figure 4 As shown, first sealing rings 121 are disposed at the first inlet and outlet 12 and the second inlet and outlet 13 .

[0053] Thereby, the sealing performance of the connection between the air dryer 10 and other components can be improved.

[0054] In some embodiments, a filter is disposed on at least one axial side of the drying chamber 111 , and the filter includes a fitting surface 411 for fitting the desiccant 112 .

[0055] By providing a filter, the filter is attached to the desiccant 112, and the filter can filter the gas flowing out of the desiccant 112 to prevent particulate impurities in the desiccant 112 from being carried out by the gas, thereby preventing the gas from carrying impurities and causing damage to other components.

[0056] Furthermore, the filter element may be made of felt.

[0057] The felt has a high fiber density and fine pores, which can more effectively intercept suspended impurities and have a higher filtration efficiency. In addition, in the regeneration mode, when the heating device 2 heats the desiccant 112, the temperature of the filter element will rise. Since the felt is resistant to high temperatures, the stability of the filter element in a high temperature environment can be improved.

[0058] As an example, Figure 2 and Figure 3 As shown, the outer contour of the housing 1 is cylindrical, and a connecting portion 141 integrally formed with the housing 1 is provided on the housing 1. The connecting portion 141 is connected to other parts of the automobile by bolt connection, thereby realizing the installation of the housing 1.

[0059] The shell 1 has a cylindrical accommodating chamber 11 inside, the filter is in the shape of a circular plate and fits with the side cavity wall of the accommodating chamber 11, there are two filter elements, the two filter elements are arranged at intervals along the axial direction of the accommodating chamber 11, and the two filter elements and the side wall of the shell 1 form the above-mentioned drying chamber 111, that is, the drying chamber 111 is a part of the accommodating chamber 11, and the axial direction of the drying chamber 111 is consistent with the axial direction of the accommodating chamber 11.

[0060] The first inlet and outlet 12 and the second inlet and outlet 13 are both connected to the accommodating chamber 11. The first inlet and outlet 12 and the second inlet and outlet 13 are respectively arranged on both sides of the drying chamber 111 along the axial direction of the accommodating chamber 11. The filter element close to the first inlet and outlet 12 is the first filter element 41, and the filter element arranged close to the second inlet and outlet 13 is the second filter element 42.

[0061] Through the above arrangement, when the gas flows through the desiccant 112 in the forward direction, it needs to be filtered by the second filter element 42 and then flow out from the second inlet and outlet 13. When the gas flows through the desiccant 112 in the reverse direction, it needs to be filtered by the first filter element 41 and then flow out from the first inlet and outlet 12. Thus, the purity of the gas flowing out of the air dryer 10 can be guaranteed in both the drying mode and the regeneration mode.

[0062] In some embodiments, the filter element includes a stop surface 412 disposed opposite to the fitting surface 411 , and a stop member is disposed on at least one axial side of the drying chamber 111 , and the stop member abuts against the stop surface 412 .

[0063] By providing a stop member, the stop member stops at the filter element, and the stop member can apply pressure to the filter element toward the desiccant 112, so that the filter element is tightly attached to the desiccant 112, thereby improving the stability of the relative position of the filter element and the desiccant 112.

[0064] In some embodiments, the shell 1 includes end covers arranged opposite to each other along the axial direction of the drying chamber 111. On the same axial side of the drying chamber 111, a stop member is arranged between the filter element and the end cover, and the end surface of the stop member facing away from the filter element stops at the end cover.

[0065] The stop member is stopped against the end cover, and the relative position of the stop member and the filter element can be limited by the relative position of the stop member and the end cover, thereby limiting the relative position of the filter element and the desiccant 112.

[0066] In some embodiments, Figure 3 and Figure 4 As shown, the shell 1 includes a cylinder 14 and a cover 15. The cylinder 14 extends axially along the drying chamber 111. An opening is provided at one axial end of the cylinder 14, and a cylinder bottom 142 is provided at the other end. The cover 15 is connected to the cylinder 14 and blocks the opening. The cylinder bottom 142 and the cover 15 both form end covers. The air dryer 10 also includes an elastic member 6, which is provided between the stop member and the cylinder bottom 142. The elastic member 6 is used to apply a biasing force toward the filter element to the stop member.

[0067] During the long-term use of the air dryer 10, the filter element, desiccant 112 and other components may be deformed. Under the biasing force of the elastic member 6, the stop member can always stop against the filter element, so that the filter element and the desiccant 112 are tightly attached, thereby ensuring the stability of the internal structure of the shell 1 and ensuring the drying effect of the gas.

[0068] As an example, Figure 3 As shown, there are two stop members, one stop member is a first stop member 51, and the other stop member is a second stop member 52. The two sides of the first stop member 51 respectively stop at the first filter member 41 and the cover body 15, and the two sides of the second stop member 52 respectively stop at the second filter member 42 and the elastic member 6.

[0069] The side cavity wall of the accommodating cavity 11 has a positioning step 113 for positioning the second stop member 52. The positioning step 113 is arranged between the second filter element 42 and the cylinder bottom 142. The second stop member 52 can limit the extreme position of the second stop member 52 moving in the direction close to the cylinder bottom 142. An installation space for installing the elastic member 6 is reserved between the second stop member 52 and the cylinder bottom 142.

[0070] Furthermore, the elastic member 6 may be a spring, the biasing force is the elastic force, the expansion and contraction direction of the spring is consistent with the axial direction of the drying chamber 111, and the spring is in a compressed state.

[0071] The spring has the characteristics of high strength and high toughness, and can maintain good stability during long-term use, thereby applying a relatively stable biasing force to the second stop member 52 to ensure the stability between the components in the housing 1.

[0072] like Figure 3 and Figure 4 As shown, when assembling the air dryer 10, the elastic member 6, the second stop member 52, the second filter member 42, the desiccant 112 and other components are placed into the cylinder 14 in sequence, and then the cover body 15 and the cylinder 14 are sealed and connected via the second sealing ring 151, and a retaining spring 7 is provided on the side of the cover body 15 away from the cylinder bottom 142. The retaining spring 7 is engaged with the cylinder 14 to limit the cover body 15, thereby realizing the assembly of the components in the cylinder 14.

[0073] No welding is required during the above assembly process, the operation is simple and the production cost is low; at the same time, the various components of the above structure are easy to disassemble. When some components of the air dryer 10 (such as the desiccant 112, filter, spring, etc.) are damaged, they can be replaced separately, so the maintenance cost is low.

[0074] In some embodiments, the stop member has a channel that penetrates the drying chamber 111 along the axial direction.

[0075] By setting the channel, when the stop member is arranged near the first inlet and outlet 12, the drying chamber 111 can be connected with the first inlet and outlet 12 through the channel of the stop member, and when the stop member is arranged near the second inlet and outlet 13, the drying chamber 111 can be connected with the second inlet and outlet 13 through the channel of the stop member, thereby reducing the impact of setting the stop member and ensuring the smooth flow of gas between the first inlet and outlet 12, the drying chamber 111 and the second inlet and outlet 13.

[0076] In some embodiments, Figure 3 and Figure 4 As shown, the stop member includes a plate body 511 and a protrusion 512. The surface of the plate body 511 facing the filter element stops at the filter element. The plate body 511 has a through hole that passes through the drying chamber 111 along the axial direction. The protrusion 512 is arranged on the side of the plate body 511 facing away from the filter element. The end of the protrusion 512 facing away from the plate body 511 stops at the shell 1.

[0077] Through the above arrangement, a connecting gap is formed between the protrusion 512 and the side cavity wall of the accommodating cavity 11 , and the through hole and the connecting gap together form the above-mentioned channel, so that the gas can flow between the first inlet and outlet 12 , the drying cavity 111 and the second inlet and outlet 13 .

[0078] Furthermore, if Figure 3 and Figure 4 As shown, the plate body 511 is in the shape of a circular plate and matches the shape of the filter element. The plate body 511 abuts against the filter element through the plate surface.

[0079] In this way, the contact area between the stop member and the filter element can be increased, so that the filter element is subjected to uniform force, thereby improving the operating stability of the air dryer 10.

[0080] Furthermore, there are multiple protrusions 512 , and the multiple protrusions 512 are arranged at intervals on the plate body 511 .

[0081] In the drying mode, the gas flows from the first inlet and outlet 12 into the accommodating chamber 11 at a relatively high velocity, and the gas hits the plurality of protrusions 512, which can achieve the effect of breaking up the airflow, so that the airflow flows through the drying chamber 111 in a more dispersed state, and the gas fully contacts the desiccant 112, thereby improving the drying efficiency. Similarly, in the regeneration mode, the gas fully contacts the desiccant 112, which can improve the regeneration efficiency.

[0082] Furthermore, there are multiple through holes, and the multiple through holes are evenly distributed on the plate body 511 .

[0083] As a result, the gas can flow through the drying chamber 111 in a more uniform flow state through the multiple through holes, thereby further improving the drying efficiency and the regeneration efficiency.

[0084] As an example, Figure 3As shown, the first stop member 51 and the second stop member 52 are arranged symmetrically with each other, and the multiple protrusions 512 of the first stop member 51 are stopped at the cover body 15; the end of the elastic member 6 facing away from the bottom 142 of the cylinder is stopped at the plate body 511 of the second stop member 52, and some protrusions 512 of the second stop member 52 are inserted into the elastic member 6, which can play a positioning role for the elastic member 6 and limit the radial displacement along the accommodating cavity 11.

[0085] In some embodiments, Figure 3 and Figure 4 As shown, the heating device 2 includes a rod portion 21, which is connected to the shell 1 and inserted into the drying chamber 111; the rod portion 21 has a first limiting portion 211, and the stop member has a second limiting portion 521, and the first limiting portion 211 stops at the second limiting portion 521 along the axial direction of the drying chamber 111.

[0086] By inserting the rod 21 into the drying chamber 111 , the rod 21 directly heats the desiccant 112 from the inside of the desiccant 112 , so that the heat conduction efficiency is higher and the heating efficiency is higher, thereby achieving a higher regeneration efficiency.

[0087] By providing the first limiting portion 211 and the second limiting portion 521 , the position of the rod 21 can be limited to ensure the stability of the rod 21 during long-term use.

[0088] Furthermore, the rod portion 21 is cylindrical and is coaxially disposed with the drying chamber 111 . In other words, the rod portion 21 is inserted in the center of the drying chamber 111 .

[0089] Thus, the rod portion 21 radiates heat from the center of the drying chamber 111 , and the desiccant 112 is heated more evenly, so that a better desorption effect can be achieved, thereby improving the regeneration efficiency.

[0090] As an example, Figure 3 and Figure 4 As shown, the heating device 2 also includes a head 22 and a mounting portion 23. The mounting portion 23 is plate-shaped, and is disposed on the side of the retaining spring 7 away from the end cover, and is connected to the shell 1; the head 22 is disposed on the side of the mounting portion 23 away from the accommodating cavity 11, and the rod 21 is passed through the mounting portion 23. The rod 21, the head 22 and the mounting portion 23 are all connected to each other, and the head 22 is used to connect to a power source to realize the heating function of the rod 21.

[0091] When installing the heating device 2, the rod 21 needs to pass through the cover body 15, the first stop member 51 and the first filter element 41 in sequence and then be inserted into the desiccant 112. The cover body 15, the first stop member 51 and the first filter element 41 are all provided with a clearance hole for the rod 21 to pass through.

[0092] The second limiting portion 521 is arranged on the second stop member 52, and the second limiting portion 521 is a limiting column. The end of the limiting column away from the plate body 511 is hemispherical, and the first limiting portion 211 is a groove. The groove is arranged on the end surface of the rod portion 21 facing the second filter element 42, and the shape of the groove matches that of the limiting column. The limiting column passes through the second filter element 42 and is inserted into the groove. The end of the limiting column stops at the groove wall of the groove, thereby realizing the limitation of the rod portion 21.

[0093] In some embodiments, the heating device 2 further includes a protective sleeve 24 , which is sleeved on the rod 21 .

[0094] By providing the protective cover 24 , the desiccant 112 can be prevented from directly contacting the rod 21 , thereby reducing the risk of the desiccant 112 at the center of the drying chamber 111 being damaged in a high temperature environment, thereby increasing the service life of the desiccant 112 .

[0095] As an example, Figure 5 As shown, the protective sleeve 24 includes a protective net and a frame. The frame is used to support the protective net so that the protective net is cylindrical and is sleeved on the rod 21 of the heater.

[0096] Furthermore, the protective sleeve 24 is made of nylon by injection molding.

[0097] Therefore, the manufacturing cost of the protective sleeve 24 is lower. At the same time, since the nylon material has the advantages of high strength and high wear resistance, the protective sleeve 24 can play a better isolation role between the rod 21 and the desiccant 112.

[0098] The vehicle of the embodiment of the utility model includes an air tank 20, an exhaust valve 30, an air compressor 40 and the air dryer 10 described in any of the above embodiments, the air compressor 40 and the exhaust valve 30 are both connected to the first inlet and outlet 12, and the air tank 20 is connected to the second inlet and outlet 13.

[0099] When the air dryer 10 is applied to a vehicle, it can dry the air entering the vehicle suspension system. When the air dryer 10 needs to be regenerated, the air dryer 10 is switched to the regeneration mode, and the heating device 2 heats the desiccant 112, so that the moisture and impurities deeply adsorbed by the desiccant 112 are desorbed. At the same time, the air flows through the desiccant 112 in the reverse direction, and the desiccant 112 is desorbed under the action of the pressure difference. Moreover, when the air flows through the desiccant 112 in the reverse direction, the impurities and moisture desorbed from the desiccant 112 under the action of the heating can be taken away, thereby improving the regeneration efficiency of the air dryer 10.

[0100] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. An air dryer (10), characterized in that: include: A housing (1), the housing (1) comprising a drying chamber (111) for accommodating a desiccant (112), a first inlet and outlet (12), and a second inlet and outlet (13), the first inlet and outlet (12) and the second inlet and outlet (13) both being in communication with the drying chamber (111), the first inlet and outlet (12) being used to connect to an air compressor (40), and the second inlet and outlet (13) being used to connect to an air storage tank (20); A heating device (2), the heating device (2) is connected to the shell (1) to heat the desiccant (112).

2. The air dryer (10) according to claim 1, characterized in that A filter is provided on at least one axial side of the drying chamber (111), and the filter comprises a fitting surface (411) for fitting the desiccant (112).

3. The air dryer (10) according to claim 2, characterized in that: The filter element comprises a stop surface (412) disposed opposite to the fitting surface (411), and a stop element is provided on at least one axial side of the drying chamber (111), and the stop element abuts against the stop surface (412).

4. The air dryer (10) according to claim 3, characterized in that The housing (1) comprises end covers which are arranged opposite to each other along the axial direction of the drying chamber (111); the stop member is arranged between the filter element and the end cover on the same axial side of the drying chamber (111); and the end surface of the stop member which faces away from the filter element abuts against the end cover.

5. The air dryer (10) according to claim 4, characterized in that The shell (1) comprises a cylinder (14) and a cover (15); the cylinder (14) extends in the axial direction of the drying chamber (111); an opening is provided at one axial end of the cylinder (14) and a cylinder bottom (142) is provided at the other end; the cover (15) is connected to the cylinder (14) and blocks the opening; the cylinder bottom (142) and the cover (15) both form the end cover; The air dryer (10) further comprises an elastic member (6), wherein the elastic member (6) is arranged between the stop member and the cylinder bottom (142), and the elastic member (6) is used to apply a biasing force to the stop member toward the filter element.

6. The air dryer (10) according to claim 3, characterized in that: The stop member has a passage which penetrates along the axial direction of the drying chamber (111).

7. The air dryer (10) according to claim 6, characterized in that The stop member comprises a plate body (511) and a protrusion (512); the surface of the plate body (511) facing the filter element stops at the filter element; the plate body (511) has a through hole extending axially through the drying chamber (111); the protrusion (512) is arranged on a side of the plate body (511) facing away from the filter element; and an end of the protrusion (512) facing away from the plate body (511) stops at the housing (1).

8. The air dryer (10) according to claim 6, characterized in that The heating device (2) comprises a rod portion (21), the rod portion (21) is connected to the housing (1), and the rod portion (21) is inserted into the drying chamber (111); The rod portion (21) has a first limiting portion (211), the abutting member has a second limiting portion (521), and the first limiting portion (211) abuts against the second limiting portion (521) along the axial direction of the drying chamber (111).

9. The air dryer (10) according to claim 8, characterized in that The heating device (2) further comprises a protective sleeve (24), wherein the protective sleeve (24) is sleeved on the rod portion (21).

10. A vehicle, characterized in that: The invention comprises an air storage tank (20), an exhaust valve (30), an air compressor (40), and an air dryer (10) according to any one of claims 1 to 9, wherein the air compressor (40) and the exhaust valve (30) are both connected to the first inlet and outlet (12), and the air storage tank (20) is connected to the second inlet and outlet (13).

Images