Integrated air supply unit and air suspension system

Abstract

The application relates to the technical field of automobiles, in particular to an integrated air supply unit and an air suspension system, the integrated air supply unit comprising a shell, an electric driving part and a drying part, the shell being a heat-conducting integrally formed part, the shell being provided with a drying cavity and an electric driving cavity which are adjacently arranged along a first direction, the electric driving part being arranged in the electric driving cavity, and the drying part being arranged in the drying cavity.According to the integrated air supply unit and the air suspension system provided by the application, efficient heat transfer between components is realized, waste heat generated by the electric driving part is fully recycled, the problem of waste of waste heat of the electric driving part in the prior art and the problem that the waste heat cannot be effectively utilized are completely solved, self-circulation utilization of equipment heat energy is realized, the overall structure is simplified, the machining and assembly difficulty of parts is reduced, and the overall operation stability and control precision of the integrated air supply unit are improved.

Description

Technical Field

[0001] This application relates to the field of automotive technology, and in particular to an integrated air supply unit and an air suspension system. Background Technology

[0002] In an air suspension system, the Integrated Air Supply Unit (IASU) is the core integrated assembly of the air spring / air suspension system. It highly integrates the originally dispersed air compressor (motor + pump body), air drying / purification module, control valve group (solenoid valve / check valve / pressure relief valve), etc., into a compact and modular compressed air source and air circuit control unit, providing dry, clean, and pressure-stable compressed air to the air spring system and performing charging and discharging and pressure regulation control.

[0003] During the use of integrated air supply units, the motor in the air compressor generates a large amount of waste heat. This waste heat can only be dissipated naturally through the casing and cannot be effectively recovered and utilized, resulting in a large waste of thermal energy. Summary of the Invention

[0004] The purpose of this application is to provide an integrated air supply unit and an air suspension system, so as to solve to some extent the technical problem that in the use of the integrated air supply unit, the motor in the air compressor generates a lot of operating waste heat, which can only be dissipated naturally through the casing and cannot be effectively recovered and utilized, resulting in a large amount of heat energy wastage.

[0005] According to a first aspect of this application, an integrated air supply unit is provided, including a housing, an electric drive unit, and a drying unit. The housing is a thermally conductive integral molded part. The housing is provided with a drying cavity and an electric drive cavity disposed adjacent to each other along a first direction. The electric drive unit is disposed in the electric drive cavity, and the drying unit is disposed in the drying cavity.

[0006] Preferably, the device further includes a booster unit that is connected to the electric drive unit in a transmission manner. The housing is also provided with a booster cavity for accommodating the booster unit. The booster cavity includes a first compression cavity, an air intake cavity, and a second compression cavity arranged sequentially along a first direction.

[0007] Preferably, the booster unit includes a drive member, a first piston, and a second piston, wherein the drive member is pulsatorically connected to the electric drive unit, the first piston, and the second piston, respectively. The first compression chamber is a first cylinder that matches the first piston, and the second compression chamber is a second cylinder that matches the second piston.

[0008] Preferably, the housing is further provided with a slow-flow chamber communicating with the drying chamber, and both the first compression chamber and the second compression chamber are connected to the drying chamber via the slow-flow chamber.

[0009] Preferably, it further includes an air vent cover, wherein an air vent cavity is formed on one side of the air vent cover that is recessed into the interior of the air vent cover; When the integrated air supply unit is in use, both the drying chamber and the slow-flow chamber are open at their upper ends in the direction of gravity. The air passage cover is provided at the open ends of both the drying chamber and the slow flow chamber, and the drying chamber and the slow flow chamber are connected through the air passage.

[0010] Preferably, it also includes a drain valve, and the housing is further provided with a drain channel communicating with the drying chamber. The drain valve is disposed in the drain channel to control the opening and closing of the drain channel. When the integrated air supply unit is in use, the connection point between the drain channel and the drying chamber is located at the lower part of the drying chamber in the direction of gravity.

[0011] Preferably, it further includes a gas control unit, wherein the drying chamber and the gas control unit are respectively located on both sides of the electrically driven chamber in the first direction; The electric drive chamber and the pressurization chamber are arranged side by side along a second direction, which is perpendicular to the first direction. The drying chamber and the slow-flow chamber are arranged side by side along the second direction.

[0012] Preferably, it further includes a gas control unit located on the side of the housing near the electrically driven cavity in a second direction, the second direction being perpendicular to the first direction; The electric drive chamber and the pressurization chamber are arranged side by side along a second direction, which is perpendicular to the first direction. The drying chamber and the slow-flow chamber are arranged side by side along the second direction.

[0013] Preferably, there are two drying chambers and two slow-flow chambers. The two drying chambers are respectively disposed on both sides of the electrically driven chamber in the first direction. The two slow-flow chambers are respectively disposed corresponding to the two drying chambers. The two drying chambers are respectively connected to the first compression chamber and the second compression chamber.

[0014] Preferably, it further includes a first mating part for connecting to the gas storage tank and a second mating part for connecting to the air spring; The integrated air supply unit is further provided with a flow channel assembly, the flow channel assembly comprising: The second flow channel connects the first compression chamber and the corresponding slow-flow chamber; The third flow channel connects the second compression chamber and the corresponding slow-flow chamber; The fifth flow channel connects to the drying chamber.

[0015] Preferably, the gas control unit includes: The first control valve is used to control whether or not it is connected to the air spring; The second control valve is provided in the flow channel assembly, which includes a fourth flow channel that connects the pressurization chamber and the first docking portion. The second control valve is disposed in the fourth flow channel and is used to control the opening and closing of the fourth flow channel. The third control valve, the flow channel assembly includes an eleventh flow channel and an exhaust port, the eleventh flow channel is connected to the exhaust port and the fifth flow channel, and the third control valve is disposed in the eleventh flow channel for controlling the on and off of the eleventh flow channel; The fourth control valve, wherein the flow channel assembly includes a sixth flow channel, the sixth flow channel being connected to the first docking portion and the fifth flow channel, and is used to control the on / off state of the sixth flow channel; The fifth control valve, wherein the flow channel assembly includes a seventh flow channel, the seventh flow channel is connected to the first control valve and the fifth flow channel, and the fifth control valve is disposed in the seventh flow channel for controlling the on / off state of the seventh flow channel; The sixth control valve, wherein the flow channel assembly includes an eighth flow channel, the eighth flow channel is connected to the first control valve and the pressurization chamber, and the sixth control valve is disposed in the eighth flow channel for controlling the on / off state of the eighth flow channel.

[0016] Preferably, it also includes an exhaust check valve, which is disposed in the eleventh flow channel to assist in the discharge of gas in the eleventh flow channel; The flow rate of the exhaust check valve is greater than the flow rate of the third control valve.

[0017] Preferably, the third control valve is the one with the smallest flow rate among the first control valve, the second control valve, the third control valve, the fourth control valve, the fifth control valve, and the sixth control valve.

[0018] Preferably, there are multiple first control valves to be respectively connected to multiple air springs, and the flow channel assembly includes a ninth flow channel and a tenth flow channel, wherein multiple first control valves are all connected to the ninth flow channel, the seventh flow channel is connected to the first control valves via the ninth flow channel, multiple first control valves are all connected to the tenth flow channel, and the eighth flow channel is connected to the first control valves via the tenth flow channel. It also includes a detection port, which is disposed in the flow channel assembly for installing an airflow information detection unit for detecting the flow channel assembly.

[0019] According to a second aspect of this application, an air suspension system is provided, including the integrated air supply unit described in any of the above technical solutions, and thus possesses all the beneficial technical effects of the integrated air supply unit, which will not be repeated here.

[0020] Compared with the prior art, the beneficial effects of this application are as follows: The integrated air supply unit provided in this application, on the one hand, integrates the drying chamber and the electric drive chamber adjacent to each other along a first direction, abandoning the traditional inefficient structural layout. A continuous heat conduction channel is constructed between the electric drive unit and the drying unit through an integrated heat-conducting structure, structurally achieving efficient heat transfer between components. On the other hand, relying on the structure of the integrated molded shell, the effective heat conduction area between the electric drive unit and the drying unit is significantly increased, minimizing heat transfer loss and fully recovering and utilizing the heat generated by the electric drive unit. This completely solves the problems of waste heat from electric drive components, ineffective utilization, or the need for additional heating elements for the drying unit in existing technologies, achieving self-circulation of the equipment's thermal energy. Furthermore, the integrated molded shell simplifies the overall structure, reduces the difficulty of component processing and assembly, and improves the overall operational stability and control precision of the integrated air supply unit.

[0021] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 An exploded structural diagram of the integrated air supply unit provided in Embodiment 1 of this application; Figure 2 A schematic diagram of the isometric structure of the integrated air supply unit provided in Embodiment 1 of this application; Figure 3 Another isometric structural schematic diagram of the integrated air supply unit provided in Embodiment 1 of this application; Figure 4 This is an isometric structural diagram of the piping structure of the integrated air supply unit provided in Embodiment 1 of this application, with the housing removed. Figure 5 A schematic diagram of the piping structure of the integrated air supply unit provided in Embodiment 1 of this application; Figure 6 This is an isometric structural diagram of another pipeline structure of the integrated air supply unit provided in Embodiment 1 of this application; Figure 7 A side view of the piping structure of the integrated air supply unit provided in Embodiment 1 of this application; Figure 8 A schematic diagram of the piping of the integrated air supply unit provided in Embodiment 1 of this application under the condition of air spring intake; Figure 9 A schematic diagram of the piping of the integrated air supply unit provided in Embodiment 1 of this application under the condition of air spring exhaust; Figure 10 A schematic diagram of the pipeline of the integrated air supply unit provided in Embodiment 1 of this application under the air replenishment condition; Figure 11 A schematic diagram of the piping of the integrated air supply unit provided in Embodiment 1 of this application under regenerative exhaust conditions; Figure 12 This is an isometric structural schematic diagram of the integrated air supply unit provided in Embodiment 2 of this application; Figure 13 This is an isometric structural diagram of the piping structure of the integrated air supply unit provided in Embodiment 2 of this application; Figure 14 This is a side view of the piping structure of the integrated air supply unit provided in Embodiment 2 of this application; Figure 15 This is another isometric structural schematic diagram of the integrated air supply unit provided in Embodiment 2 of this application.

[0024] Figure label: 1-Shell; 11-Electric drive cavity; 121-Drying cavity; 122-Slow flow cavity; 1311-Drainage channel; 1312-Fifth channel; 1313-Eleventh channel; 132-First channel; 133-Second channel; 134-Third channel; 135-Fourth channel; 136-Eighth channel; 137-Sixth channel; 138-Seventh channel; 139-Ninth channel; 130-Tenth channel; 14-First docking part; 15-Exhaust check valve; 16-Second docking part; 2-Electric drive part; 3-Gas cover; 4-Pressure chamber; 40-Intake chamber; 41-First compression chamber; 42-Second compression chamber; 43-Intake port; 5-Gas control part; 51-First control valve; 52-Second control valve; 53-Third control valve; 54-Fourth control valve; 55-Fifth control valve; 56-Sixth control valve; 57-Electronic control unit; 6-Detection part connector.

[0025] F1 - First direction; F2 - Second direction; F3 - Third direction. Detailed Implementation

[0026] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0027] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.

[0028] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] The following reference Figures 1 to 11 This application describes an integrated air supply unit and air suspension system according to some embodiments.

[0032] See Figures 1 to 11As shown, an embodiment of the first aspect of this application provides an integrated air supply unit, which includes a housing 1, an electric drive unit 2, and a drying unit. The housing 1 is a heat-conducting integrally molded part. The housing 1 is provided with a drying cavity 121 and an electric drive cavity 11 arranged adjacent to each other along a first direction F1. The electric drive unit 2 is disposed in the electric drive cavity 11, and the drying unit is disposed in the drying cavity 121. In this way, on the one hand, the drying cavity 121 and the electric drive cavity 11 are integrated and arranged adjacent to each other along the first direction F1, abandoning the traditional inefficient structural layout. A continuous heat conduction channel between the electric drive unit 2 and the drying unit is constructed through an integral heat-conducting structure, realizing efficient heat transfer between components from a structural perspective. On the other hand, relying on the structure of the integrally molded housing 1, the effective heat conduction area between the electric drive unit 2 and the drying unit is greatly increased, the heat transfer loss is minimized, and the heat generated by the operation of the electric drive unit 2 can be fully recovered and utilized, completely solving the problem of waste heat of the electric drive unit 2 and ineffective utilization in the prior art, realizing the self-circulation of the equipment's thermal energy. Furthermore, when heating of the drying chamber is required, the motor can be actively controlled to generate heat for active heating of the drying chamber, effectively avoiding the need for additional heating elements. In addition, the integrated molded housing 1 simplifies the overall structure, reduces the difficulty of component processing and assembly, and improves the overall operational stability and control precision of the integrated air supply unit.

[0033] like Figures 1 to 5 and Figure 7 As shown in the figure, F1 can be an example of the first direction F1. For ease of description, two directions perpendicular to each other on the plane perpendicular to the first direction F1 are defined as the second direction F2 and the third direction F3, respectively. F2 shown in the figure can be an example of the second direction F2, and F3 shown in the figure can be an example of the third direction F3. When the integrated air supply unit is in use, the aforementioned third direction F3 is parallel to the direction of gravity.

[0034] In an embodiment, such as Figure 4 As shown, the integrated air supply unit also includes a booster unit that is connected to the electric drive unit 2, and the housing 1 is also provided with a booster chamber 4 for accommodating the booster unit.

[0035] The pressurization chamber 4 includes a first compression chamber 41, an intake chamber 40, and a second compression chamber 42 arranged sequentially along the first direction F1. The housing 1 may also include a slow-flow chamber 122 communicating with the drying chamber 121. Both the first compression chamber 41 and the second compression chamber 42 are connected to the drying chamber 121 via the slow-flow chamber 122. Thus, on the one hand, the pressurization section adopts a structure where the first compression chamber 41, the intake chamber 40, and the second compression chamber 42 are arranged sequentially along the first direction F1, achieving bidirectional pressurization of compressed air, improving the stability and flow uniformity of air compression output, and avoiding pressure fluctuations caused by unilateral exhaust. On the other hand, the addition of the slow-flow chamber 122 serves as a transition space between the exhaust chamber and the drying chamber 121. The compressed gas discharged from both the first compression chamber 41 and the second compression chamber 42 first enters the slow-flow chamber 122 for buffering before flowing into the drying chamber 121. The slow-flow chamber 122 allows the airflow to diffuse more fully and enter the drying chamber 121 more evenly, effectively improving the uniformity of air drying, increasing the moisture absorption and removal efficiency of the desiccant, and extending the service life of the drying section.

[0036] like Figure 5 As shown, the booster unit includes a drive component, a first piston, and a second piston (not shown in the figure). The drive component is connected to the electric drive unit 2, the first piston, and the second piston. For example, the booster unit can be a conventional dual-piston air compressor. Preferably, the first compression chamber 41 is a first cylinder that matches the first piston, and the second compression chamber 42 is a second cylinder that matches the second piston. In this way, the cylinder and the housing 1 are integrally formed, effectively reducing deformation and coaxiality errors caused by assembly, and increasing service life and operational reliability.

[0037] Optionally, such as Figure 5 As shown, the above-mentioned booster unit may also include an air inlet 43 that communicates with the above-mentioned air intake chamber 40, for the booster unit to intake air from the outside.

[0038] Optionally, not shown in the figure, the drying section may include a desiccant disposed within the drying chamber 121.

[0039] Optionally, not shown in the figure, the drying unit may also include a filter disposed in the drying chamber 121 to filter the gas passing through the drying chamber 121.

[0040] Preferably, such as Figures 1 to 3 As shown, the integrated air supply unit may further include an air vent cover 3, one side of which has an air vent cavity recessed into the air vent cover 3. When the integrated air supply unit is in use (e.g., Figure 2 and Figure 3(As shown in the orientation), both the drying chamber 121 and the slow-flow chamber 122 are open at their upper ends in the direction of gravity. An air vent cover 3 is installed over the open ends of both the drying chamber 121 and the slow-flow chamber 122, and the two chambers are connected via the air vent. Thus, the air vent cover 3 connects the drying chamber 121 and the slow-flow chamber 122 through its internal air vent, replacing the built-in connecting channel and facilitating subsequent inspection and replacement of the drying components in the drying chamber 121 and the slow-flow chamber 122, thereby improving assembly and maintenance convenience.

[0041] Preferably, such as Figures 4 to 7 As shown, the housing 1 may also be provided with a flow channel assembly, which may include a second flow channel 133 and a third flow channel 134. The second flow channel 133 connects the slow flow chamber 122 and the first compression chamber 41, and the third flow channel 134 connects the slow flow chamber 122 and the second compression chamber 42, so that the first compression chamber 41 and the second compression chamber 42 are respectively connected to the slow flow chamber 122.

[0042] It should be noted that the aforementioned flow channel assembly can be a flow channel formed by machining (e.g., drilling) within the housing 1. In this way, the flow channel assembly is integrated into the one-piece housing 1, replacing external piping, reducing gas line joints and leakage points, improving gas line sealing performance, and ensuring the directionality and stability of airflow transmission.

[0043] Preferably, such as Figures 4 to 11 As shown, the aforementioned flow channel assembly extends along the first direction F1, the second direction F2, or the third direction F3. In this way, on the one hand, the flow channel assembly extends regularly along the three-dimensional vertical direction, avoiding excessive flow channel intersections and bends, reducing the transmission resistance of compressed air in the flow channel, reducing airflow loss, and improving air transmission efficiency and air path operation stability; on the other hand, it effectively simplifies the processing technology of the internal flow channel of the housing 1, facilitates the machining of the housing 1, and reduces the processing difficulty and production cost.

[0044] Preferably, such as Figure 4 As shown, the second flow channel 133 and the third flow channel 134 are both located on the open end side of the slow flow cavity 122 in the third direction F3, away from the slow flow cavity 122. This ensures that the airflow entering the slow flow cavity 122 from the second flow channel 133 and the third flow channel 134 can be sufficiently buffered, so that the airflow can be fully diffused and enter the drying cavity 121 more evenly.

[0045] Preferably, such as Figure 4 As shown, the above-mentioned flow channel assembly may also include a fifth flow channel 1312, which is connected to the drying chamber 121 to enable the drying chamber 121 to output gas to the outside.

[0046] Preferably, such as Figure 3 and Figure 6As shown, the integrated air supply unit may also include a drain valve, and the housing 1 may also be provided with a drain channel 1311 communicating with the drying chamber 121. The drain valve is provided in the drain channel 1311 to control the opening and closing of the drain channel 1311.

[0047] Preferably, when the integrated air supply unit is in use, the connection between the drain channel 1311 and the drying chamber 121 is located at the lower part of the drying chamber 121 in the direction of gravity. In this way, when needed, any moisture that may be present at the bottom of the drying section due to gravity can be discharged through the drain channel 1311.

[0048] Preferably, such as Figure 6 As shown, the fifth flow channel 1312 is connected to the drying chamber 121 via the drainage flow channel 1311. In this way, on the one hand, the number of openings in the drying chamber 121 can be effectively reduced, thereby ensuring the airtightness of the drying chamber 121; on the other hand, the fifth flow channel 1312 is connected to the drying chamber 121 via the drainage flow channel 1311 located below the gravity direction of the drying chamber 121, so that the airflow entering the drying chamber 121 through the air cover 3 can fully contact the drying part before being discharged through the fifth flow channel 1312, ensuring the gas drying effect.

[0049] Based on the integrated air supply unit provided by the above technical features, the following are embodiments of the two with different layout structures.

[0050] Example 1: As Figures 1 to 11 As shown, preferably, as Figure 4 As shown, the aforementioned integrated air supply unit may further include a gas control unit 5. The drying chamber 121 and the gas control unit 5 are respectively located on opposite sides of the electrically driven chamber 11 in the first direction F1. Thus, on the one hand, the integrated gas control unit 5 enables unified control of the compressed air supply, eliminating the need for an external independent control valve body, improving unit integration, and simplifying the vehicle's air circuit connection; on the other hand, the gas control unit 5 is located at the end of the housing 1 in the first direction F1 away from the drying tank. In other words, as... Figure 1 and Figure 4 As shown, in the first direction F1, the drying unit, the electric drive unit 2 and the gas control unit 5 are arranged in sequence, with the electric drive unit 2 and the gas control unit 5 arranged adjacent to each other to facilitate the connection and wiring of electrical components.

[0051] Preferably, such as Figures 1 to 4 As shown, the gas control unit 5 can be integrated into the housing 1 to further reduce the space required for the integrated air supply unit.

[0052] Preferably, such as Figures 1 to 4As shown, the electric drive chamber 11 and the booster chamber 4 can be arranged side by side along the second direction F2. The drying chamber 121 and the slow-flow chamber 122 are also arranged side by side along the second direction F2. In this way, the arrangement of the electric drive chamber 11 and the booster chamber 4 side by side, and the drying chamber 121 and the slow-flow chamber 122 side by side, realizes the orderly arrangement of the power component and the drying component, avoids mutual interference between different functional components, optimizes the heat conduction path and air path, and facilitates the assembly and positioning of each component.

[0053] Preferably, in the third direction F3, the size of the slow-flow cavity 122 is smaller than the size of the drying cavity 121, and the first end of the slow-flow cavity 122 in the third direction F3 is aligned with the drying cavity 121. The pressurization cavity 4 is located on the side where the second end of the slow-flow cavity 122 in the third direction F3 is located. In this way, the pressurization cavity 4 is arranged in the space formed by the size difference between the drying cavity 121 and the slow-flow cavity 122 in the third direction F3, which further reduces the overall volume of the integrated air supply unit and achieves an extremely compact layout.

[0054] Preferably, such as Figures 3 to 11 As shown, the integrated air supply unit may further include a first docking part 14 for connecting to a gas storage tank to realize the storage of gas in the integrated air supply unit.

[0055] Preferably, such as Figures 3 to 11 As shown, the integrated air supply unit may further include a second docking part 16 for docking with the air spring, so as to realize the docking of the integrated air supply unit with the air spring.

[0056] Preferably, such as Figures 4 to 6 As shown, the gas control unit 5 may include a first control valve 51 for controlling whether the integrated air supply unit is connected to the air spring.

[0057] Preferably, there can be multiple first control valves 51, and correspondingly, the number of second docking portions 16 is equal to and corresponds one-to-one with the number of first control valves 51, so as to dock with multiple air springs respectively. Figures 1 to 9 As shown in the figure, an example of an integrated air supply unit connected to four air springs is illustrated. Correspondingly, there are four first control valves 51, and each of the four first control valves 51 is configured to correspond one-to-one with one of the four air springs.

[0058] Preferably, such as Figures 4 to 6 As shown, the integrated air supply unit may further include a second control valve 52, and the flow channel assembly may include a fourth flow channel 135. The fourth flow channel 135 connects the air intake chamber 40 and the first docking part 14. The second control valve 52 is disposed in the fourth flow channel 135 and is used to control the opening and closing of the fourth flow channel 135, thereby realizing the control of the air flow between the air storage tank and the pressurization part.

[0059] Preferably, such as Figures 4 to 6 As shown, the aforementioned flow channel assembly may further include a first flow channel 132 communicating with the intake chamber 40 to deliver gas into the intake chamber 40. The aforementioned fourth flow channel 135 may communicate with the intake chamber 40 via the aforementioned first flow channel 132.

[0060] Preferably, such as Figures 4 to 6 As shown, the integrated air supply unit may further include a third control valve 53, and the flow channel assembly may further include an eleventh flow channel 1313 and an exhaust port. The eleventh flow channel 1313 connects the exhaust port and the fifth flow channel 1312. The third control valve 53 is disposed in the eleventh flow channel 1313 and is used to control the opening and closing of the eleventh flow channel 1313. In this way, the third control valve 53 and the eleventh flow channel 1313 cooperate to accurately control the regeneration exhaust process of the drying section. Combined with the heat conduction structure of the housing 1, the regeneration efficiency of the drying section is further improved, and the orderly discharge of wastewater and waste gas in the gas path is realized.

[0061] Preferably, the third control valve 53 is the one with the smallest flow rate among the first control valve 51, the second control valve 52, the third control valve 53, the fourth control valve 54, the fifth control valve 55, and the sixth control valve 56. In this way, in the regeneration exhaust process, by reducing the flow rate of the third control valve 53, the residence time of the gas in the drying section can be effectively extended, thereby improving the regeneration effect of the drying section.

[0062] Preferably, such as Figures 4 to 6 As shown, the integrated air supply unit may also include a fourth control valve 54, and the flow channel assembly includes a sixth flow channel 137. The sixth flow channel 137 connects the first docking part 14 and the third control valve 53, thereby realizing the control of the air flow interruption between the sixth flow channel 137 and the air storage tank.

[0063] Preferably, such as Figures 4 to 6 As shown, the integrated air supply unit may further include a fifth control valve 55, and the flow channel assembly includes a seventh flow channel 138. The seventh flow channel 138 connects the first control valve 51 and the fifth flow channel 1312. The fifth control valve 55 is disposed in the seventh flow channel 138 and is used to control the on / off state of the seventh flow channel 138. Preferably, such as Figures 4 to 9 As shown, in the example of the integrated air supply unit docking with multiple air springs, the flow channel assembly may include a ninth flow channel 139, wherein multiple first control valves 51 are connected to the ninth flow channel 139, and the seventh flow channel 138 may be connected to the first control valves 51 via the ninth flow channel 139. Thus, the overall control of the air intake of multiple air springs is achieved through the fifth control valve 55.

[0064] Preferably, such as Figures 4 to 11As shown, the integrated air supply unit may further include a detection port 6, which is disposed in the flow channel assembly for mounting an airflow information detection unit for detecting the flow channel assembly. Optionally, as... Figures 4 to 11 As shown in the figure, an example of the detection port 6 being provided in the tenth flow channel 130 is illustrated. However, it is not limited to this. As long as the airflow information of the flow channel assembly can be detected, the detection port 6 can also be provided in other positions of the flow channel assembly.

[0065] Optionally, the aforementioned detection unit may be a temperature sensor, a pressure sensor, or other sensors.

[0066] Similarly, such as Figures 4 to 6 As shown, the integrated air supply unit may further include a sixth control valve 56, and the flow channel assembly may further include an eighth flow channel 136. The eighth flow channel 136 connects the first control valve 51 and the air intake chamber 40. The sixth control valve 56 is disposed in the eighth flow channel 136 and is used to control the opening and closing of the eighth flow channel 136.

[0067] Similarly, the eighth flow channel 136 can be connected to the intake chamber 40 via the first flow channel 132.

[0068] Similarly, such as Figures 4 to 9 As shown, the flow channel assembly may also include a tenth flow channel 130, wherein multiple first control valves 51 are connected to the tenth flow channel 130, and the aforementioned eighth flow channel 136 can be connected to the aforementioned first control valves 51 via the tenth flow channel 130. Thus, the overall control of the exhaust of multiple air springs is achieved through the sixth control valve 56.

[0069] Preferably, such as Figures 4 to 9 As shown, the flow channel assembly may also include an exhaust check valve 15, which is disposed in the eleventh flow channel 1313 to assist in the discharge of gas in the eleventh flow channel 1313. The flow rate of the exhaust check valve 15 is greater than that of the third control valve 53. This can slow down the discharge of gas at the exhaust port. Because the flow rate of the third control valve 53 is small, the flow velocity of the gas flowing through the third control valve 53 increases, generating whistling noise. By setting a large-flow exhaust check valve 15 at the exhaust port, the cross-sectional area of ​​the air passage at the exhaust check valve 15 is effectively increased, thereby alleviating the whistling noise and improving the user experience.

[0070] Furthermore, the flow rate of the exhaust check valve 15 can be greater than the flow rate of the largest of the six control valves 51, 52, 53, 54, 55 and 56, in order to further reduce the probability of howling noise.

[0071] Optionally, the first control valve 51, the second control valve 52, the third control valve 53, the fourth control valve 54, the fifth control valve 55, and the sixth control valve 56 may all be solenoid valves, but are not limited thereto, and may also be other electrically controlled valves.

[0072] Optionally, such as Figure 1 and Figure 2 As shown, the integrated air supply unit also includes an electronic control unit 57, which is matched with the gas control unit 5 and is used for the electrical connection of the gas control. It should be noted that the electronic control unit 57 and its connection with the gas control unit 5 are existing structures in the art and will not be described in detail here.

[0073] Based on the features described above, Figures 1 to 11 The following description uses an example of an integrated air supply unit to illustrate its operation. The working principles of the integrated air supply unit under five different operating conditions will be described in detail below: Air spring intake condition: such as Figure 8 As shown, when the second control valve 52, the fifth control valve 55, and the first control valve 51 are opened, the gas in the gas storage tank enters the fourth flow channel 135 through the first docking part 14, flows to the first flow channel 132, and then enters the air intake chamber 40 through the first flow channel 132. After that, the airflow flows to the first compression chamber 41 and the second compression chamber 42 for pressurization, and then enters the slow flow chamber 122 through the second flow channel 133 and the third flow channel 134 respectively. The two parts of the airflow in the second flow channel 133 and the third flow channel 134 are buffered in the slow flow chamber 122 and then enter the drying chamber 121 through the air passage. The dried airflow flows to the seventh flow channel 138 through the fifth flow channel 1312, and then enters the air spring through the fifth control valve 55 and the first control valve 51 to replenish the air spring.

[0074] Air spring exhaust condition: such as Figure 9 As shown, when the fourth control valve 54, the sixth control valve 56, and the first control valve 51 are opened, the gas in the air spring sequentially enters the sixth control valve 56 through the first control valve 51 and the tenth flow channel 130, and flows to the first flow channel 132. Then, it enters the intake chamber 40 through the first flow channel 132 and flows to the first compression chamber 41 and the second compression chamber 42 respectively for pressurization. Then, it enters the slow flow chamber 122 through the second flow channel 133 and the third flow channel 134. The two parts of the airflow in the second flow channel 133 and the third flow channel 134 are buffered in the slow flow chamber 122 and then enter the drying chamber 121 through the air passage. The dried airflow flows to the sixth flow channel 137 through the fifth flow channel 1312, and then enters the air storage tank through the fourth control valve 54.

[0075] Injection conditions: such as Figure 10As shown, when the fourth control valve 54 and the fifth control valve 55 are opened, outside air enters the intake chamber 40 through the intake port 43 and is pressurized. The pressurized airflow flows through the second flow channel 133 and the third flow channel 134 and enters the slow flow chamber 122. The two parts of the airflow in the second flow channel 133 and the third flow channel 134 are buffered in the slow flow chamber 122 and then enter the drying chamber 121 through the air passage. The dried airflow flows through the fifth flow channel 1312 to the sixth flow channel 137, and then enters the gas storage tank through the fourth control valve 54. At the same time, the fifth control valve 55 is opened to connect the detection unit with the sixth flow channel 137 so that the detection unit can monitor the gas information in the flow channel assembly.

[0076] Regenerated exhaust gas operation: such as Figure 11 As shown, when the fourth control valve 54, the fifth control valve 55, and the third control valve 53 are opened, the gas in the gas storage tank enters the fourth flow channel 135 through the first docking part 14 and flows to the first flow channel 132. At this time, the pressurization part does not work, and the airflow directly enters the slow flow chamber 122 through the second flow channel 133 and the third flow channel 134 from the air inlet chamber 40. After the airflow in the second flow channel 133 and the third flow channel 134 is buffered in the slow flow chamber 122, it enters the drying chamber 121 through the air passage and purges and regenerates the drying part in the drying chamber 121. The gas carrying moisture flows to the exhaust port through the fifth flow channel 1312 and is discharged. At the same time, the fifth control valve 55 is opened to connect the detection part with the eleventh flow channel 1313 and the sixth flow channel 137 (not shown in the figure) so that the detection part can monitor the gas information in the flow channel assembly.

[0077] Differential pressure regulation condition: not shown in the figure, with Figure 7 For example, when the fourth control valve 54 and the fifth control valve 55 are opened, the first docking part 14 and the second docking part 16 are directly connected through the sixth flow channel 137, the seventh flow channel 138 and the ninth flow channel 139, thereby directly connecting the air tank and the air spring, thereby reducing or eliminating the pressure difference between the air tank and the air spring.

[0078] Example 2: Figures 12 to 14 As shown, the number of drying chambers 121 and slow-flow chambers 122 can both be two. The two drying chambers 121 are respectively disposed on both sides of the electric drive chamber 11 in the first direction F1. The two slow-flow chambers 122 are respectively disposed corresponding to the two drying chambers 121. The two drying chambers 121 are respectively connected to the first compression chamber 41 and the second compression chamber 42. Thus, the first compression chamber 41 and the second compression chamber 42 have two independent drying sections. That is, the airflow from the first compression chamber 41 and the second compression chamber 42 can enter the corresponding drying chamber 121 through their respective slow-flow chambers 122 for drying, effectively improving the drying efficiency of the gas and the drying capacity of the integrated air supply unit.

[0079] Similarly, such as Figures 12 to 14As shown, the electric drive chamber 11 and the booster chamber 4 are arranged side by side along the second direction F2 to facilitate the transmission connection between the electric drive unit 2 and the booster unit.

[0080] Similarly, in the third direction F3, the size of the slow-flow cavity 122 is smaller than the size of the drying cavity 121, and the first end of the slow-flow cavity 122 in the third direction F3 is aligned with the drying cavity 121. The pressurization cavity 4 is located on the side where the second ends of the two slow-flow cavities 122 in the third direction F3 are located. The beneficial effects are similar to those of the above embodiment one, and will not be described again here.

[0081] Preferably, such as Figure 12 As shown, the integrated air supply unit may further include a gas control unit 5, which is located on the side of the housing 1 in the second direction F2 near the electric drive cavity 11.

[0082] Preferably, such as Figure 12 and Figure 15 As shown, in the third direction F3, the size of the housing 1 is larger than the size of the gas control unit 5. On one hand, this facilitates the arrangement of some flow channel components in the lower space of the housing 1; on the other hand, it allows for the arrangement of the electronic control unit 57 and the reserved insertion space for the electronic control unit 57 by utilizing the height difference between the gas control unit 5 (located at the upper or lower part) and the housing 1, further improving the space utilization rate of the integrated air supply unit. Figure 12 Taking the orientation shown as an example, the figure shows an example in which the above-mentioned electronic control unit 57 and the reserved insertion space for the electronic control unit 57 can be arranged by utilizing the height difference between the gas control unit 5 located at the upper part of the gas control unit 5 and the housing 1.

[0083] Preferably, such as Figure 12 As shown, the gas control unit 5 and the housing 1 can be integrally formed, but are not limited to this. They can also be detachably connected to improve the maintainability and replaceability of the gas control unit 5.

[0084] Similarly, such as Figure 13 and Figure 14 As shown, the difference between this embodiment and Embodiment 1 is that the eighth flow channel 136 is directly connected to the second compression chamber 42; and the fourth flow channel 135 is directly connected to the first compression chamber 41. The setting of the control valve of the gas control unit 5, the flow channel connection method of the flow channel assembly, and the working principle of the five working conditions are similar to those in Embodiment 1, and will not be repeated here.

[0085] The second aspect of this application also provides an air suspension system including the integrated air supply unit described in any of the above embodiments, and thus has all the beneficial technical effects of the integrated air supply unit, which will not be repeated here.

[0086] Preferably, the air suspension system further includes the air spring and the air tank.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An integrated air supply unit, characterized in that, The device includes a housing (1), an electric drive unit (2), and a drying unit. The housing (1) is a thermally conductive integral molded part. The housing (1) is provided with a drying cavity (121) and an electric drive cavity (11) arranged adjacent to each other along a first direction (F1). The electric drive unit (2) is disposed in the electric drive cavity (11), and the drying unit is disposed in the drying cavity (121).

2. The integrated air supply unit according to claim 1, characterized in that, It also includes a booster unit that is connected to the electric drive unit (2) for transmission. The housing (1) is also provided with a booster chamber (4) for accommodating the booster unit. The booster chamber (4) includes a first compression chamber (41), an air intake chamber (40), and a second compression chamber (42) arranged sequentially along the first direction (F1).

3. The integrated air supply unit according to claim 2, characterized in that, The booster unit includes a drive component, a first piston, and a second piston. The drive component is connected to the electric drive unit (2), the first piston, and the second piston in a transmission connection. The first compression chamber (41) is a first cylinder that matches the first piston, and the second compression chamber (42) is a second cylinder that matches the second piston.

4. The integrated air supply unit according to claim 2, characterized in that, The housing (1) is also provided with a slow-flow chamber (122) that communicates with the drying chamber (121). The first compression chamber (41) and the second compression chamber (42) are both connected to the drying chamber (121) via the slow-flow chamber (122).

5. The integrated air supply unit according to claim 4, characterized in that, It also includes an air vent cover (3), on one side of which an air vent cavity is formed that is recessed into the interior of the air vent cover (3); When the integrated air supply unit is in use, both the drying chamber (121) and the slow-flow chamber (122) are open at their upper ends in the direction of gravity. The air passage cover (3) covers the open ends of both the drying chamber (121) and the slow flow chamber (122), and the drying chamber (121) and the slow flow chamber (122) are connected through the air passage.

6. The integrated air supply unit according to claim 2, characterized in that, It also includes a drain valve, and the housing (1) is also provided with a drain channel (1311) communicating with the drying chamber (121). The drain valve is provided in the drain channel (1311) to control the opening and closing of the drain channel (1311). When the integrated air supply unit is in use, the connection point between the drain channel (1311) and the drying chamber (121) is located at the lower part of the drying chamber (121) in the direction of gravity.

7. The integrated air supply unit according to claim 4, characterized in that, It also includes a gas control unit (5), and the drying chamber (121) and the gas control unit (5) are located on both sides of the electrically driven chamber (11) in the first direction (F1); The electric drive chamber (11) and the pressurization chamber (4) are arranged side by side along the second direction (F2), which is perpendicular to the first direction (F1). The drying chamber (121) and the slow-flow chamber (122) are arranged side by side along the second direction (F2).

8. The integrated air supply unit according to claim 4, characterized in that, It also includes a gas control unit (5), which is located on the side of the housing (1) near the electrically driven cavity (11) in a second direction (F2), the second direction (F2) being perpendicular to the first direction (F1); The electric drive chamber (11) and the pressurization chamber (4) are arranged side by side along the second direction (F2), which is perpendicular to the first direction (F1). The drying chamber (121) and the slow-flow chamber (122) are arranged side by side along the second direction (F2).

9. The integrated air supply unit according to claim 8, characterized in that, There are two drying chambers (121) and two slow-flow chambers (122). The two drying chambers (121) are respectively disposed on both sides of the electric drive chamber (11) in the first direction (F1). The two slow-flow chambers (122) are respectively disposed corresponding to the two drying chambers (121). The two drying chambers (121) are respectively connected to the first compression chamber (41) and the second compression chamber (42).

10. The integrated air supply unit according to any one of claims 7 to 9, characterized in that, It also includes a first docking part (14) for connecting to the gas storage tank and a second docking part (16) for connecting to the air spring. The integrated air supply unit is further provided with a flow channel assembly, the flow channel assembly comprising: The second flow channel (133) connects the first compression chamber (41) and the corresponding slow flow chamber (122). The third flow channel (134) connects the second compression chamber (42) and the corresponding slow flow chamber (122). The fifth flow channel (1312) is connected to the drying chamber (121).

11. The integrated air supply unit according to claim 10, characterized in that, The gas control unit (5) includes: The first control valve (51) is used to control whether or not it is connected to the air spring; The second control valve (52) is provided in the flow channel assembly, which includes a fourth flow channel (135) that connects the pressurization chamber (4) and the first docking part (14). The second control valve (52) is disposed in the fourth flow channel (135) and is used to control the opening and closing of the fourth flow channel (135). The third control valve (53) is provided in the eleventh flow channel (1313) and the exhaust port. The eleventh flow channel (1313) is connected to the exhaust port and the fifth flow channel (1312). The third control valve (53) is provided in the eleventh flow channel (1313) and is used to control the opening and closing of the eleventh flow channel (1313). The fourth control valve (54) includes a sixth flow channel (137) that connects the first docking part (14) and the fifth flow channel (1312) and is used to control the opening and closing of the sixth flow channel (137). The fifth control valve (55) is provided in the flow channel assembly, which includes a seventh flow channel (138) that connects the first control valve (51) and the fifth flow channel (1312). The fifth control valve (55) is disposed in the seventh flow channel (138) and is used to control the opening and closing of the seventh flow channel (138). The sixth control valve (56) is provided in the flow channel assembly, which includes an eighth flow channel (136) that connects the first control valve (51) and the pressurization chamber (4). The sixth control valve (56) is located in the eighth flow channel (136) and is used to control the opening and closing of the eighth flow channel (136).

12. The integrated air supply unit according to claim 11, characterized in that, It also includes an exhaust check valve (15), which is disposed in the eleventh flow channel (1313) to assist in the discharge of gas in the eleventh flow channel (1313); The flow rate of the exhaust check valve (15) is greater than the flow rate of the third control valve (53).

13. The integrated air supply unit according to claim 12, characterized in that, The third control valve (53) is the one with the smallest flow rate among the first control valve (51), the second control valve (52), the third control valve (53), the fourth control valve (54), the fifth control valve (55), and the sixth control valve (56).

14. The integrated air supply unit according to claim 11, characterized in that, The number of first control valves (51) is multiple, each of which is connected to multiple air springs. The flow channel assembly includes a ninth flow channel (139) and a tenth flow channel (130). The multiple first control valves (51) are all connected to the ninth flow channel (139). The seventh flow channel (138) is connected to the first control valves (51) via the ninth flow channel (139). The multiple first control valves (51) are all connected to the tenth flow channel (130). The eighth flow channel (136) is connected to the first control valves (51) via the tenth flow channel (130). It also includes a detection port (6) disposed on the flow channel assembly for installing an airflow information detection unit for detecting the flow channel assembly.

15. An air suspension system, characterized in that, Includes the integrated air supply unit as described in any one of claims 1 to 14.

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