Integrated air supply mechanism and air suspension system

Abstract

The invention relates to the technical field of automobile air suspensions, in particular to an integrated air supply mechanism and an air suspension system.The integrated air supply mechanism comprises a controller, a first mounting block and a second mounting block; wherein the controller and the second mounting block are fixedly connected with two opposite side surfaces of the first mounting block respectively; a compressor is mounted in the second mounting block; a motor is mounted in the first mounting block; and the motor is electrically connected with the controller and is in transmission connection with the compressor. The compressor and the controller are arranged on the two opposite sides of the first mounting block correspondingly, and the controller can be prevented from being affected by high temperature generated when the compressor works. Due to the fact that the second mounting block is easy to conduct heat, the compressor can be cooled, and meanwhile heat generated by the compressor is beneficial to improving the regeneration effect of the dryer. In addition, the integrated air supply mechanism is more compact in structure, small in occupied space and high in integration degree, and the stability is high when the compressor works.

Description

Technical Field

[0001] The invention relates to the technical field of automobile air suspension, and in particular to an integrated air supply mechanism and an air suspension system. Background Art

[0002] The air suspension system inflates or deflates the air spring to raise or lower the vehicle body. To achieve the above functions, an air supply mechanism is required in the air suspension system.

[0003] Existing air suspension air supply mechanisms mostly adopt an integrated structure. A Chinese patent with publication number CN106232398B discloses an integrated air supply unit, including an air compressor with a motor and an air dryer. The air compressor, the motor, the air dryer and a plurality of pneumatic connections form a functional unit. The functional unit is formed by at least a pneumatic block and an electronic controller. The pneumatic valve is partially arranged in the pneumatic block and partially arranged in the electronic controller. The air compressor is arranged in the pneumatic block and driven by a motor installed in front of the pneumatic block. The electronic controller is arranged on the side of the pneumatic block opposite to the motor.

[0004] In this prior art, the air compressor in the pneumatic block generates a lot of heat during operation. When this heat is not easy to dissipate, the air compressor will continue to be in a high temperature environment, and its service life will be reduced. In addition, even if the heat is dissipated through the pneumatic block, since the electronic controller is connected to the pneumatic block, the heat generated by the air compressor will also affect the electronic controller, making the performance of the electronic controller easily degraded due to high temperature. Summary of the invention

[0005] In order to solve the above problems existing in the prior art, an object of the present invention is to provide an integrated air supply mechanism and an air suspension system.

[0006] The technical solution provided by the present invention is:

[0007] In a first aspect, an integrated air supply mechanism includes a controller, a first mounting block and a second mounting block; wherein the controller and the second mounting block are both fixedly connected to the first mounting block, and the controller and the second mounting block are respectively located on two opposite sides of the first mounting block;

[0008] A plurality of air passages are provided inside the first mounting block and the second mounting block;

[0009] It also includes a motor and a compressor; the compressor is arranged inside the second mounting block, and the air inlet and the air outlet of the compressor are respectively connected to the airway; the motor is electrically connected to the controller; the motor is inserted inside the first mounting block, and the output shaft of the motor is drivingly connected to the compressor;

[0010] The controller is used to control the start and stop of the motor; when the motor is turned on, the motor drives the compressor to work, so that the gas enters the compressor from the compressor inlet and flows out from the compressor outlet.

[0011] As an optional technical solution of the first aspect, it also includes a dryer, which is at least partially arranged inside the second mounting block; the dryer is connected to the gas path, and when the gas in the gas path passes through the dryer, the dryer is used to dry the gas; the material of the second mounting block is heat-conducting metal.

[0012] Optionally, the second mounting block is provided with a compressor mounting cavity and a desiccant mounting cavity for mounting a compressor and a dryer respectively;

[0013] There is a pair of desiccant installation cavities, and the pair of desiccant installation cavities are respectively located on both sides of the compressor installation cavity.

[0014] Optionally, the first mounting block is provided with a straight hole, both ends of which extend to the controller and the second mounting block respectively; and the motor is installed in the straight hole.

[0015] Optionally, the axes of the desiccant installation cavity and the compressor installation cavity are substantially parallel and substantially perpendicular to the axial direction of the motor.

[0016] Optionally, the desiccant includes a desiccant placed in a desiccant installation cavity, and the desiccant is in direct contact with a cavity wall of the desiccant installation cavity; an end cover is installed at the cavity opening of the desiccant installation cavity.

[0017] Optionally, the first mounting block and the second mounting block are arranged separately; the first mounting block and / or the second mounting block are provided with a sealing structure, which is located at the adjacent ends of the first mounting block and the second mounting block; the sealing structure is used to make the air duct provided in the first mounting block and the air duct provided in the second mounting block sealed and connected.

[0018] As an optional technical solution of the first aspect, a valve installation position is provided on the end face of the first installation block close to the controller; when the valve is installed, the length extension direction of the protruding part of the valve protruding from the first installation block is roughly parallel to the axial direction of the motor.

[0019] As an optional technical solution of the first aspect, an empty spring air nozzle installation position is provided on the end face of the first mounting block close to the second mounting block; the second mounting block is provided with an avoidance space; when the empty spring air nozzle is installed, the empty spring air nozzle is located in the avoidance space, and the axial direction of the empty spring air nozzle is roughly parallel to the axial direction of the motor.

[0020] In a second aspect, an air suspension system comprises the integrated air supply mechanism in the first aspect or any one of the technical solutions in the first aspect.

[0021] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0022] In the integrated air supply mechanism proposed by the present invention, the compressor and the controller are respectively arranged on opposite sides of the first mounting block, which can prevent the controller from being affected by the high temperature generated when the compressor is working. In addition, the compressor and the dryer are both installed in the second mounting block that is easy to conduct heat. Since the second mounting block is easy to conduct heat, the compressor can be cooled. At the same time, the heat generated by the compressor also helps to improve the regeneration effect of the dryer. In addition, the integrated air supply mechanism proposed by the present invention has a more compact structure, occupies less space, has a higher degree of integration, and has higher stability when the compressor is working. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional diagram of an integrated air supply mechanism in one embodiment of the present application;

[0024] Figure 2 This is an exploded view of an integrated air supply mechanism in one embodiment of the present application;

[0025] Figure 3 This is a cross-sectional view of an integrated air supply mechanism in one embodiment of the present application;

[0026] Figure 4 A cross-sectional view of a second mounting block in one embodiment of the present application;

[0027] Figure 5 A three-dimensional diagram of a first mounting block in an embodiment of the present application at a viewing angle;

[0028] Figure 6 This is a three-dimensional diagram of a first mounting block in an embodiment of the present application at another viewing angle;

[0029] Figure 7 This is a schematic diagram of an air suspension system when an air storage tank is provided in one embodiment of the present application;

[0030] Figure 8 This is a schematic diagram of an air suspension system when a high-pressure air storage tank and a low-pressure air storage tank are provided in one embodiment of the present application;

[0031] Fig. 9 This is a schematic diagram of an air suspension system when a high-pressure air storage tank and a low-pressure air storage tank are provided in another embodiment of the present application.

[0032] Explanation of the symbols in the schematic diagram:

[0033] Air spring 101, air spring solenoid valve 102, charging solenoid valve 103, deflation solenoid valve 104, air supply check valve 105, sealing valve 106, blowback solenoid valve 107, blowback pneumatic valve 108, air supply solenoid valve 109;

[0034] Gas storage tank 201, high pressure gas storage tank 202, low pressure gas storage tank 203;

[0035] A first gas path 301, a second gas path 302, a third gas path 303, and a fourth gas path 304;

[0036] Controller 401 , first mounting block 402 , air spring air nozzle 403 , straight hole 404 , second mounting block 405 , motor 406 , compressor 407 , dryer 408 , desiccant mounting cavity 409 , compressor mounting cavity 410 . DETAILED DESCRIPTION

[0037] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.

[0038] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of implementation. The change or adjustment of their relative relationship should also be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0039] This application proposes an integrated gas supply mechanism, such as Figure 1-2 As shown, it includes a controller 401, a first mounting block 402 and a second mounting block 405. The controller 401 and the second mounting block 405 are respectively fixedly connected to two opposite sides of the first mounting block 402. The controller 401 can be directly mounted on the first mounting block 402, or it can be firstly mounted in the controller housing, and then the housing is connected to the first mounting block 402. The connection method of the housing, the second mounting block 405 and the first mounting block 402 can be a snap connection, or a bolt connection, or other connection methods in the prior art that can realize fixing the housing and the first mounting block 402 together, which is relatively mature in the prior art and will not be repeated or limited here.

[0040] like Figure 3As shown, a compressor 407 is installed in the second mounting block 405, and a motor 406 is installed in the first mounting block 402, wherein the output shaft of the motor 406 is transmission-connected with the compressor 407. When the output shaft of the motor 406 rotates, the compressor 407 can be driven to compress air. The transmission connection mode between the motor 406 and the compressor 407 is relatively mature in the prior art, and will not be repeated here. The motor 406 is also electrically connected to the controller 401, and the start and stop of the motor 406 and the speed of the motor 406 can be controlled by the controller 401, which is also relatively mature in the prior art and will not be repeated here.

[0041] Since the controller 401 and the second mounting block 405 are respectively located on two opposite sides of the first mounting block 402, and the compressor 407 is installed in the second mounting block 405, the controller 401 is far away from the compressor 407, and the temperature generated by the operation of the compressor 407 is not likely to affect the controller 401.

[0042] like Figure 5-6 As shown, the first mounting block 402 is provided with a straight hole 404, and the two ends of the straight hole 404 extend to the controller 401 and the second mounting block 405 respectively, and the motor 406 is installed in the straight hole 404. At this time, the motor 406 can be regarded as being installed on the same side as the controller 401. After the main body of the motor 406 or at least its output shaft passes through the first mounting block 402, the output shaft is connected to the compressor 407 in a transmission manner. Through such an arrangement, the entire height direction of the first mounting block 402 and the partial height direction of the second mounting block 405 can overlap with the axial direction of the motor 406, and the radial direction of the motor 406 also completely overlaps with the first mounting block 402. At this time, the overall size of the integrated air supply mechanism is basically determined by the controller 401, the first mounting block 402, and the second mounting block 405. The motor 406 will not increase the size of the integrated air supply mechanism, thereby making the overall size of the air supply mechanism of the present application smaller. In addition, the straight hole 404 can be located roughly in the middle of the first mounting block 402, so that the motor 406 can be arranged in the middle of the integrated air supply mechanism, the center of gravity of the integrated air supply mechanism will be more central, and when the motor 406 drives the compressor 407 to operate, the vibration generated by the air supply mechanism will be smaller and the stability of the air supply mechanism will be higher.

[0043] like Figure 1 As shown, the end surface of the first mounting block 402 close to the second mounting block 405 is provided with an empty spring air nozzle mounting position, and the second mounting block 405 leaves an escape space, and the empty spring air nozzle 403 is located in the escape space. The axial direction of the empty spring air nozzle is roughly parallel to the axial direction of the motor 406, that is, at this time, in the height direction, the empty spring air nozzle 403 and the second mounting block 405 are overlapped, which is conducive to making the overall size of the air supply mechanism of the present application smaller.

[0044] When the compressor 407 is installed in the second mounting block 405, the dryer 408 is also installed in the second mounting block 405. The material of the second mounting block 405 can be a metal with good thermal conductivity, such as aluminum. When the compressor 407 is working, part of the heat generated is conducted to the dryer 408 through the second mounting block 405, and the other part is dissipated through the surface of the second mounting block 405, which is beneficial to the heat dissipation of the compressor 407 and can also improve the regeneration effect of the dryer 408.

[0045] It should be noted that the dryer 408 can be completely installed in the second installation block 405, or only part of the dryer 408 can be installed in the second installation block 405. In both cases, the heat conducted by the second installation block 405 is conducive to the regeneration of the dryer 408. Preferably, the dryer 408 can be completely installed in the second installation block 405.

[0046] In order to improve the heat dissipation effect, heat dissipation fins may also be arranged around the second mounting block 405 .

[0047] Specifically, Figure 4 As shown, the second mounting block 405 is provided with a compressor mounting cavity 410 and a desiccant mounting cavity 409 for mounting a compressor 407 and a dryer 408, respectively. The compressor mounting cavity 410 is provided with an inlet and an outlet communicating with the deflation air path and the inflation air path. The desiccant mounting cavity 409 is also provided with an inlet and an outlet communicating with the inflation air path.

[0048] The dryer 408 includes a desiccant placed in a desiccant installation cavity 409, and an end cap is installed at the cavity opening of the desiccant installation cavity 409 to prevent leakage of the desiccant. The desiccant is directly arranged in the second installation block 405, and the desiccant is directly in contact with the cavity wall of the desiccant installation cavity 409, eliminating the shell of the external air drying device. The heat generated by the compressor 407 conducted by the second installation block 405 can directly increase the temperature of the desiccant and improve the regeneration effect of the desiccant. In addition, the external air drying device will also increase the size of the integrated air supply mechanism. Therefore, the present solution arranges the desiccant directly in the second installation block 405, which can also reduce the size and weight of the integrated air supply mechanism of the present application.

[0049] As an optional embodiment, there is a pair of desiccant installation chambers 409, and the pair of desiccant installation chambers 409 are respectively located on both sides of the compressor installation chamber 410. The desiccant installation chambers 409 are symmetrically distributed on both sides of the compressor installation chamber 410, so that the center of gravity of the overall structure of the second installation block 405 is roughly centered. When the compressor 407 is working, the air supply mechanism is relatively stable as a whole and is not easy to shake. In addition, the provision of a pair of desiccant installation chambers 409 is equivalent to increasing the heat dissipation area of ​​the second installation block 405, which is more conducive to the heat dissipation of the compressor 407. At the same time, the desiccant is dispersed in the two desiccant installation chambers 409, which can not only increase the total amount of desiccant, but also facilitate backflush regeneration.

[0050] The axes of the desiccant installation cavity 409 and the compressor installation cavity 410 are roughly parallel, which can further improve the stability of the air supply mechanism when the compressor 407 is working. The axes of the desiccant installation cavity 409 and the compressor installation cavity 410 are roughly perpendicular to the axial direction of the motor 406, which can avoid the air supply mechanism from being too large in height direction, making the air supply mechanism smaller in size.

[0051] As an optional embodiment, a valve installation position is provided on the end surface of the first mounting block 402 close to the controller 401. When the valve is installed, the length extension direction of the protruding part of the valve protruding from the first mounting block 402 is roughly parallel to the axial direction of the motor 406. Arranging various valves on the side close to the controller 401 can prevent the temperature generated by the operation of the compressor 407 from affecting the valve. At the same time, making the length extension direction of the protruding part of the valve protruding from the first mounting block 402 roughly parallel to the axial direction of the motor 406 can prevent the valve from extending laterally, and the connection path between the valve and the controller is the shortest, which not only reduces the size of the air supply mechanism, but also saves connecting pipelines, and reduces product weight and cost.

[0052] The first mounting block 402 and the second mounting block 405 are provided with an inflating gas path, a deflation gas path, and a back-blowing gas path. The above gas paths can be formed by machining airflow channels on the first mounting block 402 and the second mounting block 405, and then installing various valves and gas path accessories on the airflow channels. The switching and circulation of the gas paths can be achieved through various valves. At the same time, a certain gas path can be formed separately in the first mounting block 402 or the second mounting block 405, or a part of the gas path can be set in the first mounting block 402, and the rest of the gas path can be set in the second mounting block 405. The gas paths set in the first mounting block 402 and the second mounting block 405 together constitute a complete gas path.

[0053] When the first mounting block 402 and the second mounting block 405 are connected separately, the airway connection port between the first mounting block 402 and the second mounting block 405 needs to be sealed, so a sealing structure is provided in the first mounting block 402 and / or the second mounting block 405, and the sealing structure is located at the adjacent ends of the first mounting block 402 and the second mounting block 405. The sealing structure is used to seal the airway provided in the first mounting block 402 with the airway provided in the second mounting block 405, thereby preventing gas leakage. Common sealing structures may be sealing rings, etc.

[0054] The air inlet of the compressor 407 is connected to the deflation air path, and the air outlet of the compressor 407 is connected to the inflation air path. When the motor 406 drives the compressor 407 to work, the compressor 407 can compress the gas in the deflation air path and transport it to the inflation air path.

[0055] A dryer 408 is also installed inside the second mounting block 405. The dryer 408 is arranged on the inflation gas path. When the gas flows in the inflation gas path, the gas flowing through the dryer 408 can be dried.

[0056] When the gas flows in reverse through the dryer 408, the dryer 408 can be back-blown and regenerated. In this embodiment, the back-blowing gas circuit includes the first gas circuit 301, the second gas circuit 302, the third gas circuit 303, the fourth gas circuit 304, the back-blowing solenoid valve 107, and the back-blowing pneumatic valve 108. Specifically, one end of the first gas circuit 301 is connected to the high-pressure end of the dryer 408, and the other end is connected to the back-blowing solenoid valve 107. One end of the second gas circuit 302 is connected to the back-blowing solenoid valve 107, and the other end is connected to the air nozzle of the back-blowing pneumatic valve 108. One end of the third gas circuit 303 is connected to the low-pressure end of the dryer 408, and the other end is connected to the back-blowing pneumatic valve 108. One end of the fourth gas circuit 304 is connected to the back-blowing pneumatic valve 108.

[0057] In this embodiment, the dryer 408 is arranged on the inflation gas path, and the dryer 408 is closer to the high-pressure end of the gas path. When back-blowing, the higher the gas pressure, the better the back-blowing effect.

[0058] In this solution, the back-blowing solenoid valve 107 can be used to control the on-off of the back-blowing pneumatic valve 108, that is, when the back-blowing solenoid valve 107 is turned on, a high-pressure gas passes through the first gas path 301, the back-blowing solenoid valve 107, and the second gas path 302 to reach the back-blowing pneumatic valve 108, and the high-pressure gas causes the valve core of the back-blowing pneumatic valve 108 to switch to a connected state. At this time, the third gas path 303 is connected to the fourth gas path 304, and the high-pressure gas of another path back-blowing the dryer 408. The back-blowing gas passes through the third gas path 303 and the back-blowing pneumatic valve 108 in sequence, and then is discharged from the fourth gas path 304. In this solution, the back-blowing solenoid valve 107 and the dryer 408 are in a parallel gas path, and the gas of the back-blowing dryer 408 will not enter the back-blowing solenoid valve 107, which can prevent the powdered desiccant from entering the precision solenoid valve core, causing the solenoid valve core to be blocked or damaged, so that there is no need to worry about the inconvenience of repairing and replacing the solenoid valve after damage, so that the integrated gas supply mechanism can be widely used. The back-blowing pneumatic valve 108 is actually a mechanical valve, and its valve core is not easily blocked or damaged by powdered desiccant. The present application can realize the on-off of the back-blowing air path by electrically and automatically controlling the back-blowing solenoid valve 107, thereby retaining the function of automatic control of the air suspension system, and at the same time, the present application can avoid the problem of the solenoid valve core being blocked or damaged by powdered desiccant.

[0059] An inflating solenoid valve 103 is installed on the inflating gas circuit, and the inflating gas circuit is connected to at least one air spring solenoid valve 102. For example, the number of air spring solenoid valves 102 can correspond to the number of air springs, or multiple air springs can be connected to the same air spring solenoid valve 102. A deflation solenoid valve 104 is installed on the deflation gas circuit, and the air spring solenoid valve 102 is also connected to the deflation gas circuit.

[0060] The air spring air nozzle 403 is connected to the air spring solenoid valve 102, and the air spring can be connected to the air spring air nozzle 403 through an air pipe. When the air spring solenoid valve 102 is switched to a connected state, the deflation solenoid valve 104 or the inflation solenoid valve 103 is switched to connect the air spring to the inflation air path or the deflation air path.

[0061] As an optional solution, the air inlet of the compressor 407 is connected to an air supply circuit, on which an air supply solenoid valve 109 or an air supply check valve 105 is installed, and the inlet of the air supply circuit is arranged on the first mounting block 402. The air supply solenoid valve 109 can be opened, so that gas is drawn from the atmosphere into the air circuit through the compressor 407.

[0062] Optionally, a filter is also provided on the air supply path, and the gas supplied from the atmosphere can be filtered through the filter. The filter is installed in the second installation block 405.

[0063] Regarding the arrangement of the other end of the fourth gas path 304, in one embodiment, Fig. 9As shown, the other end of the fourth gas path 304 is connected to the air supply gas path, and the connection point is located between the air supply solenoid valve 109 and the filter, or between the air supply check valve 105 and the filter. When the dryer 408 is back-blown and regenerated, the back-blowing gas can also enter the air supply gas path through the fourth gas path 304, so that the filter can be back-blown. In another embodiment, as Figure 8 As shown, the other end of the fourth gas path 304 can also be directly connected to the atmosphere. In this case, the connecting port between the fourth gas path 304 and the atmosphere can be provided on the first mounting block 402 or on the second mounting block 405 .

[0064] The present application also proposes an air suspension system including the above-mentioned integrated air supply mechanism, and specifically refers to the following two embodiments: Air Suspension System Embodiment 1

[0065] In this embodiment, the present application proposes an air suspension system, including the above-mentioned integrated air supply mechanism. It also includes an air spring 101 and an air tank 201. The air spring 101 is connected to the air spring air nozzle 403 through a gas pipeline arranged on the vehicle body. The number of air spring solenoid valves 102 can correspond to the number of air springs 101, such as Figure 7 As shown. It is also possible to connect multiple air springs 101 to the same air spring solenoid valve 102.

[0066] In this solution, both the inflation solenoid valve 103 and the deflation solenoid valve 104 are switching valves, and the gas storage tank 201 is connected to both the inflation solenoid valve 103 and the deflation solenoid valve 104. The interface between the gas storage tank 201 and the inflation gas circuit and the deflation gas circuit is arranged on the first mounting block 402 or the second mounting block 405.

[0067] The inflation solenoid valve 103 and the deflation solenoid valve 104 can be a two-position three-way valve, and two two-position two-way valves can also be used to replace a two-position three-way valve. The use of multi-position multi-way valves can effectively reduce the number of solenoid valves, reduce the weight and cost of the entire system, and reduce the assembly steps. In addition, the inflation solenoid valve 103 and the deflation solenoid valve 104 also work intermittently and in rotation, and do not need to work at the same time, which can reduce the power consumption of the entire system.

[0068] The air inlet of the compressor 407 is connected to the A port of the deflation electromagnetic valve 104, the air spring electromagnetic valve 102 is connected to the T port of the deflation electromagnetic valve 104, and the air storage tank 201 is connected to the P port of the deflation electromagnetic valve 104. Conversely, the air spring electromagnetic valve 102 can also be connected to the P port of the deflation electromagnetic valve 104, and the air storage tank 201 is connected to the T port of the deflation electromagnetic valve 104.

[0069] The air outlet of the compressor 407 is connected to the A port of the charging solenoid valve 103, the air spring solenoid valve 102 is connected to the T port of the charging solenoid valve 103, and the air tank 201 is connected to the P port of the charging solenoid valve 103. Conversely, the air spring solenoid valve 102 can also be connected to the P port of the charging solenoid valve 103, and the air tank 201 is connected to the T port of the charging solenoid valve 103.

[0070] The present application also proposes a control method for an air suspension system, including the following working conditions:

[0071] In steady-state operation, the air spring solenoid valve 102 is closed, the deflation solenoid valve 104 is switched to connect the air spring solenoid valve 102 to the air inlet of the compressor 407, the inflation solenoid valve 103 is switched to connect the air spring solenoid valve 102 to the air outlet of the compressor 407, and the back-blow solenoid valve 107 and the back-blow pneumatic valve 108 are both in a normally closed state.

[0072] During the ascending condition, the deflation solenoid valve 104 is switched to the air tank 201 and connected to the air inlet of the compressor 407, and the inflation solenoid valve 103 is switched to the air outlet of the compressor 407 and connected to the air spring solenoid valve 102. The compressor 407 works, the air spring solenoid valve 102 is opened, and the vehicle body rises.

[0073] During the descending condition, the air spring solenoid valve 102 is opened, the deflation solenoid valve 104 is switched to connect the air spring solenoid valve 102 with the air inlet of the compressor 407, the inflation solenoid valve 103 is switched to connect the air tank 201 with the air outlet of the compressor 407, the compressor 407 works, the gas enters the air tank 201, and the vehicle body descends.

[0074] During the regeneration condition, the air spring solenoid valve 102 is closed, and the deflation solenoid valve 104 is switched to connect the air spring solenoid valve 102 with the air inlet of the compressor 407; the charging solenoid valve 103 is switched to connect the air tank 201 with the air outlet of the compressor 407, the back-blowing solenoid valve 107 is opened, and the back-blowing pneumatic valve 108 is passively switched to the open state, and the gas from the air tank 201 back-blows the dryer 408; or, the charging solenoid valve 103 is switched to connect the air spring solenoid valve 102 with the air outlet of the compressor 407, the back-blowing solenoid valve 107 is opened, and the back-blowing pneumatic valve 108 is passively switched to the open state, and the gas in the circuit between the air spring solenoid valve 102 and the charging solenoid valve 103 back-blows the dryer 408.

[0075] During the air replenishment condition, the air spring solenoid valve 102 is closed, and the deflation solenoid valve 104 is switched to the air spring solenoid valve 102 to connect with the air inlet of the compressor 407; the inflation solenoid valve 103 is switched to connect with the air tank 201 to the air outlet of the compressor 407, and the compressor 407 is working. The external gas enters the air inlet of the compressor 407 through the air replenishment one-way valve 105 or the opened air replenishment solenoid valve 109, and the compressor 407 delivers compressed gas to the air tank 201.

[0076] In the overflow condition, the air spring solenoid valve 102 is closed, the deflation solenoid valve 104 is switched to connect the air spring solenoid valve 102 with the air inlet of the compressor 407, and the inflation solenoid valve 103 is switched to connect the air spring solenoid valve 102 with the air outlet of the compressor 407. When the air pressure in the air circuit is greater than the safety air pressure, the back-blowing solenoid valve 107 is opened, and the back-blowing pneumatic valve 108 is passively switched to the open state, and the gas in the air circuit is discharged.

[0077] Air suspension system embodiment 2

[0078] In this embodiment, the present application proposes an air suspension system, including the above-mentioned integrated air supply mechanism. It also includes an air spring 101 and a high-pressure air tank 202 and a low-pressure air tank 203. The air spring 101 is connected to the air spring air nozzle 403 through a gas pipeline arranged on the vehicle body. The number of air spring solenoid valves 102 can correspond to the number of air springs 101, such as Figure 8-9 As shown. It is also possible to connect multiple air springs 101 to the same air spring solenoid valve 102.

[0079] The high-pressure gas storage tank 202 is connected to the charging gas path of the high-pressure end of the dryer 408, and the high-pressure end of the dryer 408 refers to the end away from the compressor 407. The low-pressure gas storage tank 203 is connected to the deflation gas path of the air inlet of the compressor 407. The connection port between the high-pressure gas storage tank 202 and the charging gas path and the connection port between the low-pressure gas storage tank 203 and the deflation gas path can be arranged on the first mounting block 402 or the second mounting block 405.

[0080] A sealing valve 106 and / or a one-way valve is also provided in the gas path between the high-pressure gas storage tank 202 and the low-pressure gas storage tank 203 to prevent gas blowby.

[0081] The present application also proposes a control method for an air suspension system, including the following working conditions:

[0082] In a steady-state condition, the air spring solenoid valve 102 , the charging solenoid valve 103 , the deflation solenoid valve 104 , the back-blowing solenoid valve 107 , and the back-blowing pneumatic valve 108 are all in a closed state.

[0083] During the regeneration condition, the air spring solenoid valve 102 , the charging solenoid valve 103 , and the deflation solenoid valve 104 are closed, the back-blowing solenoid valve 107 is opened, and the back-blowing pneumatic valve 108 is passively switched to the open state, and the gas from the high-pressure gas storage tank 202 back-blown the dryer 408 .

[0084] In the overflow condition, when the gas line pressure is greater than the safety pressure, the back-blowing solenoid valve 107 is opened, and the back-blowing pneumatic valve 108 is passively switched to the open state, and the gas in the gas line is discharged.

[0085] During the air replenishment working condition, the air spring solenoid valve 102, the charging solenoid valve 103, the deflation solenoid valve 104, and the sealing valve 106 are closed, and the compressor 407 works. The external gas enters the air inlet of the compressor 407 through the air replenishment check valve 105 or the opened air replenishment solenoid valve 109, and the compressor 407 delivers compressed gas to the high-pressure gas storage tank 202.

[0086] During the ascending condition, the charging solenoid valve 103 is opened, the deflation solenoid valve 104 is closed, and the corresponding air spring solenoid valve 102 is opened, and the gas in the high-pressure gas storage tank 202 enters the corresponding air spring 101 .

[0087] In the descending condition, the charging solenoid valve 103 is closed, the releasing solenoid valve 104 is opened, and the corresponding air spring solenoid valve 102 is opened, and the gas in the air spring 101 enters the low-pressure gas storage tank 203 .

[0088] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

Claims

1. An integrated air supply mechanism, characterized in that: It comprises a controller (401), a first mounting block (402) and a second mounting block (405); the controller (401) and the second mounting block (405) are respectively located on two opposite sides of the first mounting block (402); A plurality of air passages are provided inside the first mounting block (402) and the second mounting block (405); It also includes a motor (406) and a compressor (407); The compressor (407) is arranged inside the second mounting block (405), and the air inlet and the air outlet of the compressor (407) are respectively connected to the air passage; The motor (406) is electrically connected to the controller (401); the motor (406) is inserted into the first mounting block (402), and the output shaft of the motor (406) is drivingly connected to the compressor (407); The controller (401) is used to control the start and stop of the motor (406); when the motor (406) is turned on, the motor (406) drives the compressor (407) to work.

2. The integrated air supply mechanism according to claim 1, characterized in that: The material of the second mounting block (405) is heat-conducting metal; It also includes a dryer (408), which is at least partially arranged inside the second mounting block (405); the dryer (408) is connected to the gas circuit, and when the gas in the gas circuit passes through the dryer (408), the dryer (408) is used to dry the gas.

3. The integrated air supply mechanism according to claim 2, characterized in that: The second mounting block (405) is provided with a compressor mounting cavity (410) and a desiccant mounting cavity (409) for mounting a compressor (407) and a dryer (408) respectively; There is a pair of desiccant installation cavities (409), and the pair of desiccant installation cavities (409) are respectively located on both sides of the compressor installation cavity (410).

4. The integrated air supply mechanism according to claim 3, characterized in that: The first mounting block (402) is provided with a straight hole (404), and two ends of the straight hole (404) extend to the controller (401) and the second mounting block (405) respectively; the motor (406) is installed in the straight hole (404).

5. The integrated air supply mechanism according to claim 3, characterized in that: The axes of the desiccant installation cavity (409) and the compressor installation cavity (410) are substantially parallel and substantially perpendicular to the axial direction of the motor (406).

6. The integrated air supply mechanism according to claim 3, characterized in that: The desiccant (408) includes a desiccant placed in a desiccant installation cavity (409), and the desiccant is in direct contact with a cavity wall of the desiccant installation cavity (409); The cavity opening of the desiccant installation cavity (409) is installed with an end cover.

7. The integrated air supply mechanism according to claim 2, characterized in that: The first mounting block (402) and the second mounting block (405) are separately arranged; The first mounting block (402) and / or the second mounting block (405) are provided with a sealing structure, and the sealing structure is located at adjacent ends of the first mounting block (402) and the second mounting block (405); The sealing structure is used to enable the air passage provided on the first installation block (402) to be in sealed communication with the air passage provided on the second installation block (405).

8. The integrated air supply mechanism according to claim 1, characterized in that: A valve installation position is provided on the end surface of the first installation block (402) close to the controller (401); when the valve is installed, the length extension direction of the protruding part of the valve protruding from the first installation block (402) is roughly parallel to the axial direction of the motor (406).

9. The integrated air supply mechanism according to claim 1, characterized in that: An end surface of the first mounting block (402) close to the second mounting block (405) is provided with an air spring air nozzle mounting position; The second mounting block (405) is provided with an escape space; when the air spring air nozzle is installed, the air spring air nozzle is located in the escape space, and the axial direction of the air spring air nozzle is substantially parallel to the axial direction of the motor (406).

10. An air suspension system, characterized in that: Comprising the integrated air supply mechanism as described in any one of claims 1-9.

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