An integrated air supply system

Abstract

The embodiment of the present invention relates to the field of automobile air suspension equipment, and discloses an integrated air supply system. It includes: an intake circuit, a first execution circuit, which delivers air to an actuator to raise the vehicle body, and the first execution circuit is configured to output air from a first air tank to the actuator through an air dryer using an air compressor as a power source; a second execution circuit, which outputs air from the actuator to lower the vehicle body, and the second execution circuit is configured to deliver the air in the actuator to the second air tank under the action of a pressure difference; a conversion circuit, which delivers the air in the second air tank to the first air tank through an air dryer using an air compressor as a power source; and a first exhaust circuit. The pressure in the first air tank is greater than the pressure in the second air tank. It can at least be used to solve the technical problems of a long vehicle body adjustment time and impurities entering the system.

Description

Technical Field

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

[0002] In vehicles such as trucks, buses, and construction machinery, compressed air delivered from a compressor is used to control air pressure systems including brake systems and suspension systems. The vehicle changes the vehicle height or suspension stiffness through the air suspension system. The air supply module of the air suspension system increases the vehicle height by inflating the airbag of the air spring. The air supply module can also lower the vehicle height by exhausting the gas in the airbag of the air spring. The existing air supply module includes a supercharger, an air tank, a distribution valve block, and a control unit. However, the existing air supply module has the following problems:

[0003] 1. The compressed air contains moisture in the atmosphere and liquid impurities such as oil used to lubricate the compressor. If compressed air containing a large amount of moisture and oil enters the air pressure system, it may cause rust and swelling of rubber components, which may cause malfunction.

[0004] 2. The existing air supply module has the problem of long adjustment time or loud noise during adjustment. Summary of the invention

[0005] The object of the present invention is to provide an integrated air supply system for solving the technical problems of rust caused by impurities entering the system or a long vehicle body adjustment time and loud noise during adjustment.

[0006] In order to solve the above technical problems, an embodiment of the present invention provides an integrated air supply system, the system comprising:

[0007] An air intake circuit, used to perform an air intake action and input air into the system, wherein the air intake circuit is configured to input air using an air compressor as a power source, and then input air through an air dryer to a first air storage tank;

[0008] A first execution circuit, used for executing a first execution action, so that the air is delivered to the execution mechanism to raise the vehicle body, the first execution circuit is configured to output the air from the first air tank through the air dryer to the execution mechanism using the air compressor as a power source;

[0009] a second execution circuit, for executing a second execution action, so that the air is outputted from the execution mechanism to lower the vehicle body, the second execution circuit being configured to deliver the air in the execution mechanism to a second air storage tank under the action of a pressure difference;

[0010] a conversion circuit, used to perform a conversion action, wherein the conversion circuit is configured to use the air compressor as a power source to transport the air in the second air storage tank to the first air storage tank via the air dryer; and

[0011] A first exhaust circuit, used to perform an exhaust action, wherein the first exhaust circuit is configured to output the air in the first air storage tank through the air dryer and an exhaust valve;

[0012] Wherein, the pressure in the first gas storage tank is greater than the pressure in the second gas storage tank.

[0013] The vehicle air suspension system provided by the present invention comprises a first gas tank which is a high-pressure gas tank and a second gas tank which is a low-pressure gas tank. The gas passes through the first gas tank to the actuator, so that the vehicle body rises rapidly; the gas in the actuator goes to the second gas tank, so that the vehicle body drops rapidly. The gas of the whole system is in a closed-loop control circuit, which can increase the speed of the vehicle body rising / falling, and at the same time reduce the motor power and power consumption, thereby saving energy and protecting the environment. In particular, the problem of the slow speed of the gas in the actuator to the first gas tank is solved, so that the second gas tank is added, so that the gas in the actuator is depressurized rapidly, the vehicle body drops rapidly, and NVH is reduced.

[0014] Considering system safety, the exhaust valve can be an EV valve. When high pressure is generated inside the system or when internal components of the system fail, the high-pressure gas inside the system can be discharged into the atmosphere through the EV valve. The EV valve automatically opens by setting a threshold value to ensure system safety. At the same time, the traditional power limiting valve is eliminated to reduce product costs.

[0015] Compared with rubber-sealed valve bodies, EV valves are more stable to use. Since traditional exhaust valves and power limiting valves are both rubber-sealed, they will not work for a long time, resulting in the adhesion of the rubber to the valve body and the inability to open. At the same time, the rubber will age. This system integrates the exhaust valve and the power limiting valve on the EV exhaust valve, which can achieve mechanical pressure relief and electromagnetic control of exhaust pressure relief. The reliability is greatly improved, avoiding the risk of product failure, especially the failure of traditional power limiting valves. The pressure building rate of air from the high-pressure air tank to the air spring is slowed down, causing the vehicle to rise slowly, while reducing product costs.

[0016] Additionally, the system comprises:

[0017] an air filter, connected to the atmosphere, for filtering foreign matter in the atmosphere when performing the air intake action;

[0018] The air pump is used to provide a power source for the intake action, the first execution action and / or the conversion action;

[0019] The air dryer is used to dry the air when performing the intake action, the first execution action and / or the conversion action;

[0020] The first air storage tank and the second air storage tank are used to store air in the system.

[0021] In addition, the first gas tank and the second gas tank are both provided with manual exhaust devices to ensure that the pressure in the first gas tank and the second gas tank can be exhausted through the manual device after the system fails.

[0022] When the gas enters the system, it first passes through the air filter and air dryer to ensure that the gas inside the system is dry and prevent moisture and foreign matter from entering, which would cause adverse effects such as icing or blockage inside the system. In addition, during the exhaust process from the inside of the system (the first gas storage tank) to the atmosphere, the throttle valve of the air dryer can be used for "backblowing" to discharge the moisture in the desiccant, thereby ensuring the safety of the system and eliminating the need for frequent replacement of the dryer.

[0023] In addition, the actuator comprises:

[0024] An airbag group, comprising at least one airbag, used to adjust the vehicle height by inhaling or exhausting air, which may be an air spring;

[0025] The air valve group includes at least one air valve for controlling the opening or closing of the passage leading to the airbag.

[0026] In addition, the number of the airbag and air valve of the actuator is preferably set to four.

[0027] In addition, when the pressure in the system is greater than a threshold value, the exhaust valve automatically responds and performs a switching action until the pressure in the system is less than the threshold value.

[0028] In addition, the system further comprises:

[0029] A pressure sensor, used for detecting the pressure in the system, connected to the first gas storage tank, the second gas storage tank and / or the actuator;

[0030] Air exchange or compensation is performed between the coaxial actuator and the second air storage tank according to the value of the pressure sensor.

[0031] The system integrates a pressure sensor that can monitor the pressure of each part of the system in real time.

[0032] In addition, the system further comprises a switching valve group, wherein the switching valve group comprises:

[0033] A first switching valve, one end of which is connected to the actuator, and the other end of which is connected to the air dryer. When the actuator is inletting air, the air passes through the first switching valve and enters the actuator.

[0034] The second switching valve has one end connected to the actuator and the other end connected to the air pump. When the actuator is exhausted, the air is discharged from the actuator through the second switching valve to the atmosphere or the first air storage tank.

[0035] a third switching valve, one end of which is connected to the first air storage tank, and the other end of which is connected to the air pump;

[0036] A fourth switching valve has one end connected to the first air storage tank and the other end connected to the air dryer.

[0037] Taking into account possible gas leakage in the system, the system can replenish gas into the first gas storage tank for storage according to different pressure values, and the gas replenishment process is carried out through the fourth switching valve.

[0038] In addition, the system further comprises:

[0039] an emergency air intake circuit, configured to use the air compressor as a power source to input the air through the air dryer to the actuator; and

[0040] The communication state between the actuator and the air dryer is switched by the first switching valve.

[0041] In addition, the system further comprises:

[0042] A second exhaust circuit is configured to exhaust the air in the actuator through the exhaust valve using an air compressor as a power source; and

[0043] The communication state between the actuator and the air pump is switched by the second switching valve.

[0044] Taking special emergency situations into consideration, the gas in the actuator can be directly and quickly discharged into the atmosphere in an emergency, or air can be directly transported from the atmosphere into the actuator to ensure system safety.

[0045] In addition, the system further includes a fifth switching valve for switching the connection state of the second gas storage tank.

[0046] Due to the existence of the second air tank, the gas in the actuator is directly released to the second air tank without going through an air compressor, which greatly improves the vehicle body descent speed, reduces vehicle NVH, and solves customer complaints about noise. In addition, the gas in the second air tank is pumped to the first air tank through an air compressor to achieve a closed loop of gas, which can reduce the volume requirement of the first air tank to a certain extent and solve the problem of difficulty in vehicle layout due to the large air tank.

[0047] In addition, the exhaust valve comprises:

[0048] a first vent hole, connected to the atmosphere;

[0049] a second vent hole in communication with the system; and

[0050] A deformation structure, used for switching the connection state between the exhaust valve and the system;

[0051] Wherein, when the pressure in the system is less than a threshold value, the top end of the deformable structure contacts the second vent hole, and the exhaust valve is closed to the system;

[0052] When the pressure in the system is greater than a threshold, the air in the system pushes the deformable structure through the second vent hole, causing the deformable structure to leave the second vent hole, and the exhaust valve is connected to the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0054] Figure 1 is a schematic structural diagram of the integrated air supply system of the present invention;

[0055] Figure 2 is a process diagram of a vehicle body ascending process of the integrated air supply system embodiment 1 of the present invention;

[0056] Figure 3 is a process diagram of a vehicle body lowering process of the integrated air supply system embodiment 2 of the present invention;

[0057] Figure 4 is a process diagram of the process of replenishing air into the system in Example 3 of the integrated air supply system of the present invention;

[0058] Figure 5 is a process diagram of the exhaust process of the system into the atmosphere of Example 4 of the integrated air supply system of the present invention;

[0059] Figure 6 is a process diagram of the air conversion process of Example 5 of the integrated air supply system of the present invention;

[0060] Figure 7 is a process diagram of an emergency exhaust process of Example 6 of the integrated air supply system of the present invention;

[0061] Figure 8 is a process diagram of an emergency air intake process of Embodiment 7 of the integrated air supply system of the present invention;

[0062] Fig. 9 is a process diagram of an overpressure protection process of an integrated air supply system embodiment 8 of the present invention;

[0063] Fig.10 is a process diagram of the integrated air supply system pressure sensor of the present invention detecting the pressure of the actuator;

[0064] Fig.11 is a process diagram of the integrated air supply system pressure sensor of the present invention detecting the pressure of the first air storage tank;

[0065] Fig.12 is a process diagram of the integrated air supply system pressure sensor of the present invention detecting the pressure of the second air storage tank;

[0066] Fig.13 It is a structural diagram of the exhaust valve of the integrated air supply system of the present invention. DETAILED DESCRIPTION

[0067] In order to make the purpose, technical scheme and advantages of the present invention clearer, the following will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present invention, many technical details are provided in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed for protection in the claims of the present application can be implemented.

[0068] A first embodiment of the present invention relates to an integrated air supply system, such as Figure 1 As shown, the system includes an air filter AF, an air compressor CM, an air dryer AD, a first air storage tank RES1, a second air storage tank RES2, a pressure sensor P / U, a first switching valve SV1, a second switching valve SV2, a third switching valve SV3, a fourth switching valve SV4, an exhaust valve EV and an actuator;

[0069] The actuator includes four air valves AV1, AV2, AV3 and AV4 and four air springs FL, FR, RL and RR.

[0070] The system provided by the present invention is composed of an intake circuit, a first execution circuit, a second execution circuit, a conversion circuit and a first exhaust circuit through the above components.

[0071] The air intake circuit is used to perform the air intake action and input air into the system. The air intake circuit is configured to input air using the air compressor CM as a power source, and then input air through the air dryer AD to the first air storage tank RES1.

[0072] When the system performs the air intake action, the air filter AF is opened, and the filtered air is dried by the air compressor CM through the air dryer AD, and the dried air enters the first air storage tank RES1 through the fourth switching valve SV4. The gas enters the system and first passes through the air filter AF and the air dryer AD to ensure that the gas inside the system is dry and prevent moisture and foreign matter from entering, which may cause adverse effects such as icing or blockage inside the system.

[0073] The first execution circuit is used to execute the first execution action, so that air is delivered to the actuator to lift the vehicle body. The first execution circuit is configured to use the air compressor CM as a power source to output air from the first air tank RES1 to the actuator through the air dryer AD.

[0074] When the system executes the first execution action, the third switching valve SV3 is opened, and the air flows out from the first air storage tank RES1. Under the action of the air compressor CM, the air is dried through the air dryer AD. The dried air enters the actuator through the first switching valve SV1, and the four air valves AV1, AV2, AV3 and AV4 are opened to inflate the four air springs FL, FR, RL and RR, thereby raising the vehicle body.

[0075] The second execution circuit is used to execute the second execution action, so that air is output from the actuator to lower the vehicle body. The second execution circuit is configured to transport the air in the actuator to the second air storage tank RES2 under the action of pressure difference.

[0076] When the system performs the second execution action, the four air valves AV1, AV2, AV3 and AV4 are opened to allow the air in the four air springs FL, FR, RL and RR to be quietly and quickly delivered to the second air tank RES2 under the action of the pressure difference, thereby lowering the vehicle body. Due to the existence of the second air tank RES2, the gas in the actuator is directly decompressed to the second air tank RES2 without the need to work through the air compressor CM, which greatly increases the vehicle body lowering speed, reduces the vehicle NVH, and solves customer complaints about noise.

[0077] The conversion circuit is used to perform the conversion action. The conversion circuit is configured to use the air compressor CM as a power source to transport the air in the second air storage tank RES2 to the first air storage tank RES1 through the air dryer AD.

[0078] When the system performs the switching action, the fifth switching valve SV5, the second switching valve SV2 and the fourth switching valve SV4 are opened at the same time, so that the air in the second gas storage tank RES2 is dried by the air dryer AD under the action of the air compressor CM and then enters the first gas storage tank RES1. The gas in the second gas storage tank RES2 passes through the air compressor CM to the first gas storage tank RES1, realizing the closed loop of the gas, which can reduce the volume requirement of the first gas storage tank RES1 to a certain extent, and solve the problem that customers are difficult to arrange in the vehicle due to the large gas cylinder.

[0079] The first exhaust circuit is used to perform an exhaust action, and the first exhaust circuit is configured to output the air in the first air storage tank RES1 through the air dryer AD and the exhaust valve EV.

[0080] When the system performs exhaust action, the fourth switching valve SV4 is opened to allow the air in the first air tank RES1 to pass through the air dryer AD and be discharged from the system through the exhaust valve EV. During the exhaust process from the inside of the system (the first air tank RES1) to the atmosphere, "back-blowing" can be performed through the throttle valve of the air dryer AD to discharge the moisture in the desiccant, thereby ensuring system safety and eliminating the need to frequently replace the dryer.

[0081] The pressure in the first gas storage tank RES1 is greater than the pressure in the second gas storage tank RES2.

[0082] The vehicle air suspension system provided by the present invention comprises a first gas storage tank RES1 which is a high-pressure gas storage tank, and a second gas storage tank RES2 which is a low-pressure gas storage tank. The gas passes through the first gas storage tank RES1 to the actuator, so that the vehicle body rises rapidly; the gas in the actuator goes to the second gas storage tank RES2, so that the vehicle body drops rapidly. The gas of the whole system is in a closed-loop control circuit, which can increase the speed of the vehicle body rising / falling, and at the same time reduce the motor power and power consumption, thereby saving energy and protecting the environment. In particular, the problem of the slow speed of the gas in the actuator to the first gas storage tank RES1 is solved, so that the second gas storage tank is added, so that the gas in the actuator is depressurized rapidly, the vehicle body drops rapidly, and NVH is reduced at the same time.

[0083] Considering the system safety, the exhaust valve EV can be an EV valve. When high pressure is generated inside the system or when internal components of the system fail, the high-pressure gas inside the system can be discharged into the atmosphere through the EV valve. The EV valve automatically opens by setting a threshold value to ensure system safety. At the same time, the traditional power limiting valve is eliminated to reduce product costs.

[0084] Compared with the valve body with rubber seal, the EV valve is more stable to use. Since the traditional exhaust valve EV and the power limiting valve are both rubber sealed and have not worked for a long time, the rubber will stick to the valve body and cannot be opened. At the same time, the rubber will age. The system integrates the exhaust valve EV and the power limiting valve on the EV exhaust valve EV, which can achieve mechanical pressure relief and electromagnetic control exhaust pressure relief. The reliability is greatly improved, and the risk of product failure is avoided, especially the failure of the traditional power limiting valve. The pressure building rate of air from the high-pressure air tank to the air spring is slowed down, causing the vehicle to rise slowly, while reducing product costs.

[0085] According to an embodiment of the present invention, Figure 1 As shown, the system includes:

[0086] The air filter AF is connected to the atmosphere and is used to filter foreign matter in the atmosphere when performing the intake action;

[0087] The air compressor CM is used to provide a power source for the air intake action, the first execution action and / or the conversion action;

[0088] An air dryer AD, used to dry the air when performing the intake action, the first execution action and / or the conversion action;

[0089] The first air storage tank RES1 and the second air storage tank RES2 are used to store air in the system.

[0090] According to an embodiment of the present invention, manual exhaust devices are provided in the first gas storage tank RES1 and the second gas storage tank RES2 to ensure that the pressure in the first gas storage tank RES1 and the second gas storage tank RES2 can be exhausted through the manual device after system failure.

[0091] When the gas enters the system, it first passes through the air filter AF and the air dryer AD to ensure that the gas inside the system is dry and prevent moisture and foreign matter from entering, which would cause adverse effects such as icing or blockage inside the system. In addition, the exhaust process from the inside of the system (the first gas storage tank RES1) to the atmosphere can be "back-blown" through the throttle valve of the air dryer AD to discharge the moisture in the desiccant, thereby ensuring the safety of the system and eliminating the need for frequent replacement of the dryer.

[0092] According to an embodiment of the present invention, the actuator comprises:

[0093] The airbag group includes at least one airbag, which is used to adjust the vehicle height by suction or exhaust, and can be an air spring, such as Figure 1 As shown, this embodiment includes four air springs, including FL, FR, RL and RR;

[0094] The air valve group includes at least one air valve for controlling the opening or closing of the passage leading to the airbag. In this embodiment, four air valves are included, including AV1, AV2, AV3 and AV4.

[0095] According to an embodiment of the present invention, the number of the airbag and the air valve of the actuator is preferably four.

[0096] According to an embodiment of the present invention, when the pressure in the system is greater than a threshold value, the exhaust valve EV automatically responds by performing a switching action until the pressure in the system is less than the threshold value.

[0097] According to an embodiment of the present invention, Figure 11-12 As shown, the system also includes:

[0098] A pressure sensor P / U, used to detect the pressure in the system, connected to the first gas storage tank RES1, the second gas storage tank RES2 and / or the actuator;

[0099] Air exchange or compensation is performed between the coaxial actuator and the second air storage tank RES2 according to the P / U value of the pressure sensor.

[0100] The system integrates pressure sensor P / U, which can monitor the pressure of each part inside the system in real time.

[0101] According to an embodiment of the present invention, the system further comprises a switching valve group, the switching valve group comprising:

[0102] The first switching valve SV1 has one end connected to the actuator and the other end connected to the air dryer AD. When the actuator is inlet, the air enters the actuator from the air dryer AD through the first switching valve SV1;

[0103] The second switching valve SV2 is connected to the actuator at one end and to the air pump CM at the other end. When the actuator is exhausted, the air is discharged from the actuator through the second switching valve SV2 to the atmosphere or the first air storage tank RES1.

[0104] A third switching valve SV3, one end of which is connected to the first air storage tank RES1, and the other end of which is connected to the air pressure pump CM;

[0105] The fourth switching valve SV4 has one end connected to the first air storage tank RES1 and the other end connected to the air dryer AD.

[0106] Taking into account possible gas leakage in the system, the system can replenish gas to the first gas storage tank RES1 according to different pressure values, and the gas replenishment process is carried out through the fourth switching valve SV4.

[0107] According to an embodiment of the present invention, the system further includes:

[0108] The emergency air intake circuit is configured to use the air compressor CM as a power source to input air through the air dryer AD to the actuator; and

[0109] The communication state between the actuator and the air dryer AD is switched by the first switching valve SV1.

[0110] According to an embodiment of the present invention, the system further includes:

[0111] A second exhaust circuit is configured to exhaust the air in the actuator through the exhaust valve EV using the air compressor CM as a power source; and

[0112] The communication state between the actuator and the air pump CM is switched by the second switching valve SV2.

[0113] Taking special emergency situations into consideration, the gas in the actuator can be directly and quickly discharged into the atmosphere in an emergency, or air can be directly transported from the atmosphere into the actuator to ensure system safety.

[0114] According to an embodiment of the present invention, the system further includes a fifth switching valve SV5 for switching the communication state of the second gas storage tank RES2.

[0115] Due to the existence of the second gas storage tank RES2, the gas in the actuator is directly released to the second gas storage tank RES2 without going through the air compressor CM, which greatly improves the vehicle body descent speed, reduces the vehicle NVH, and solves customer complaints about noise. According to an embodiment of the present invention, the gas in the second gas storage tank RES2 is transferred to the first gas storage tank RES1 through the air compressor CM to realize a closed loop of gas, which can reduce the volume requirement of the first gas storage tank RES1 to a certain extent, and solve the problem that customers are difficult to arrange in the vehicle due to the large gas cylinder.

[0116] It can be understood that the air filter AF, air compressor CM, air dryer AD, first air storage tank RES1, second air storage tank RES2, pressure sensor P / U, first switching valve SV1, second switching valve SV2, third switching valve SV3, fourth switching valve SV4 and actuator provided by the present invention can be improved in a customized manner and can be designed according to specific requirements such as vehicle type and usage environment.

[0117] According to an embodiment of the present invention, Fig.13 As shown, the exhaust valve EV includes a first vent hole 1 , a second vent hole 2 and a deformation structure 3 .

[0118] The first vent hole 1 is connected to the atmosphere; the second vent hole 2 is connected to the system; and the deformation structure 3 is used to switch the connection state between the exhaust valve EV and the system.

[0119] When the pressure in the system is less than a threshold value, the top of the deformation structure 3 contacts the second vent hole 2, and the exhaust valve EV is closed to the system.

[0120] When the pressure in the system is greater than a threshold value, the air in the system pushes the deformable structure 3 through the second vent hole 2, causing the deformable structure 3 to leave the second vent hole 2, and the exhaust valve EV is connected to the system.

[0121] The deformation structure 3 may include a spring assembly.

[0122] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0123] Embodiment 1: Vehicle body lifting process

[0124] like Figure 2 As shown, when the vehicle body needs to rise, the system executes the first execution action, opens the third switching valve SV3, and the air flows out from the first air storage tank RES1. Under the action of the air compressor CM, the air is dried by the air dryer AD. The dried air enters the actuator through the first switching valve SV1, and the four air valves AV1, AV2, AV3 and AV4 are opened to inflate the four air springs FL, FR, RL and RR, thereby raising the vehicle body.

[0125] Embodiment 2: Vehicle body lowering process

[0126] like Figure 3 As shown, when the vehicle body needs to be lowered, the system executes the second execution action, opening the fifth switching valve SV5 and the four air valves AV1, AV2, AV3 and AV4, so that the air in the four air springs FL, FR, RL and RR is quietly and quickly transported to the second air tank RES2 under the action of pressure difference, thereby lowering the vehicle body.

[0127] Example 3: Process of replenishing air into the system

[0128] like Figure 4 As shown, when the system needs to replenish air, the system performs the air intake action, the air filter AF is opened, and the filtered air is dried by the air compressor CM through the air dryer AD, and the dried air enters the first air storage tank RES1 through the fourth switching valve SV4. The gas enters the system and first passes through the air filter AF and the air dryer AD to ensure that the gas inside the system is dry and prevent moisture and foreign matter from entering, which may cause adverse effects such as icing or blockage inside the system.

[0129] Example 4: System exhaust process to atmosphere

[0130] like Figure 5As shown, when the system needs to be exhausted, the system performs the exhaust action, opens the fourth switching valve SV4, and allows the air in the first air storage tank RES1 to pass through the air dryer AD and be discharged from the system by the exhaust valve EV. During the exhaust process of the first air storage tank RES1 to the atmosphere, the throttle valve of the air dryer AD can be used for "back-blowing" to discharge the moisture in the desiccant to ensure system safety.

[0131] Example 5: Air conversion process

[0132] like Figure 6 As shown in the figure, when the system performs the switching action, the fifth switching valve SV5, the second switching valve SV2 and the fourth switching valve SV4 are opened at the same time, so that the air in the second gas storage tank RES2 is dried by the air dryer AD under the action of the air compressor CM and then enters the first gas storage tank RES1. The gas in the second gas storage tank RES2 passes through the air compressor CM to the first gas storage tank RES1, realizing the closed loop of the gas, which can reduce the volume requirement of the first gas storage tank RES1 to a certain extent, and solve the problem that customers have difficulty in arranging the gas cylinder in the vehicle due to the large size of the gas storage tank.

[0133] Example 6: Emergency exhaust process

[0134] like Figure 7 As shown, in an emergency, the four air valves AV1, AV2, AV3 and AV4 of the actuator and the second switching valve SV2 are opened at the same time, and the air in the actuator is urgently discharged through the exhaust valve EV under the action of the air compressor CM, so that the vehicle body can be quickly lowered to ensure the safety of the user.

[0135] Example 7: Emergency air intake process

[0136] like Figure 8 As shown, in an emergency, the four air valves AV1, AV2, AV3 and AV4 of the actuator and the second switching valve SV1 are opened at the same time, and the air is urgently input into the actuator through the air dryer AD under the action of the air compressor pump CM, so that the vehicle body rises quickly to ensure the safety of the user.

[0137] Example 8: Overvoltage protection process

[0138] like Fig. 9 As shown, in the case where the vehicle body rises in Embodiment 1, if the pressure inside the system is too high, the pressure inside the system will squeeze the exhaust valve EV so that the exhaust valve EV automatically opens, and an over-pressure deflation process is performed.

[0139] Those skilled in the art can understand that the above-mentioned embodiments are specific examples of implementing the present invention, but are not intended to limit the present invention. Any person skilled in the art can use the above-mentioned technical content to make many possible changes or modifications to the technical solution of the present invention without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. An integrated air supply system, characterized in that: The system comprises: An air intake circuit, used to perform an air intake action and input air into the system, wherein the air intake circuit is configured to input air using an air compressor as a power source, and then input air through an air dryer to a first air storage tank; A first execution circuit, used for executing a first execution action, so that the air is delivered to the execution mechanism to raise the vehicle body, the first execution circuit is configured to output the air from the first air tank through the air dryer to the execution mechanism using the air compressor as a power source; a second execution circuit, for executing a second execution action, so that the air is outputted from the execution mechanism to lower the vehicle body, the second execution circuit being configured to deliver the air in the execution mechanism to a second air storage tank under the action of a pressure difference; a conversion circuit, used to perform a conversion action, wherein the conversion circuit is configured to use the air compressor as a power source to transport the air in the second air storage tank to the first air storage tank via the air dryer; and A first exhaust circuit, used to perform an exhaust action, wherein the first exhaust circuit is configured to output the air in the first air storage tank through the air dryer and an exhaust valve; The system further includes a switching valve group, wherein the switching valve group includes: A first switching valve, one end of which is connected to the actuator, and the other end of which is connected to the air dryer. When the actuator is inletting air, the air passes through the first switching valve and enters the actuator. a second switching valve, one end of which is connected to the actuator, and the other end of which is connected to the air pump, so that when the actuator is exhausted, the air is discharged from the actuator through the second switching valve to the atmosphere or the first air storage tank; a third switching valve, one end of which is connected to the first air storage tank, and the other end of which is connected to the air pump; a fourth switching valve, one end of which is connected to the first air storage tank, and the other end of which is connected to the air dryer; Wherein, the pressure in the first gas storage tank is greater than the pressure in the second gas storage tank.

2. The integrated air supply system according to claim 1, characterized in that: The system comprises: an air filter, connected to the atmosphere, for filtering foreign matter in the atmosphere when performing the air intake action; The air pump is used to provide a power source for the air intake action, the first execution action and / or the conversion action; The air dryer is used to dry the air when performing the intake action, the first execution action and / or the conversion action; The first air storage tank and the second air storage tank are used to store air in the system.

3. The integrated air supply system according to claim 1 or 2, characterized in that: The executive mechanism comprises: An airbag group, comprising at least one airbag, for adjusting the height of the vehicle body by inhaling or exhausting air; The air valve group includes at least one air valve for controlling the opening or closing of the passage leading to the airbag.

4. The integrated air supply system according to claim 1, characterized in that: When the pressure in the system is greater than a threshold value, the exhaust valve automatically responds by performing a switching action until the pressure in the system is less than the threshold value.

5. The integrated air supply system according to claim 3, characterized in that: The system further comprises: A pressure sensor, used for detecting the pressure in the system, connected to the first gas storage tank, the second gas storage tank and / or the actuator; Air exchange or compensation is performed between the coaxial actuator and the second air storage tank according to the value of the pressure sensor.

6. The integrated air supply system according to claim 1, characterized in that: The system further comprises: an emergency air intake circuit, configured to use the air compressor as a power source to input the air through the air dryer to the actuator; and The communication state between the actuator and the air dryer is switched by the first switching valve.

7. The integrated air supply system according to claim 1, characterized in that: The system further comprises: A second exhaust circuit is configured to exhaust the air in the actuator through the exhaust valve using an air compressor as a power source; and The communication state between the actuator and the air pump is switched by the second switching valve.

8. The integrated air supply system according to claim 1, characterized in that: The system also includes a fifth switching valve for switching the connection state of the second gas storage tank.

9. The integrated air supply system according to claim 1, characterized in that: The exhaust valve comprises: a first vent hole, connected to the atmosphere; a second vent hole in communication with the system; and A deformation structure, used for switching the connection state between the exhaust valve and the system; Wherein, when the pressure in the system is less than a threshold value, the top end of the deformable structure contacts the second vent hole, and the exhaust valve is closed to the system; When the pressure in the system is greater than a threshold, the air in the system pushes the deformable structure through the second vent hole, causing the deformable structure to leave the second vent hole, and the exhaust valve is connected to the system.

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