Integrated gas supply device

Abstract

The invention discloses an integrated air supply device which comprises an air compression unit, the air compression unit comprises a motor and two sets of air compressors installed on the two sides of the motor respectively, and output shafts at the two ends of the motor are in transmission connection with the air compressors so that the air compressors can operate to compress air. The integrated air supply device further comprises an electromagnetic valve set, the electromagnetic valve set is arranged in a valve block connected with the air compression unit, an air channel is formed in the valve block and used for forming an air path, and air compressed by the air compressor is distributed by the electromagnetic valve set through the air channel. The device is good in dynamic performance, high in integration degree and suitable for the field of air suspension systems.

Description

Technical Field

[0001] This invention relates to the field of air compression device technology, and more specifically to an integrated air supply device. Background Technology

[0002] An air suspension system controls the air compressor and exhaust valves based on road conditions and distance sensor signals, automatically compressing or extending the springs to lower or raise the chassis ground clearance, thereby increasing high-speed vehicle stability or off-road capability in complex conditions. The air supply unit, as the core component of the air suspension system, compresses and inflates the air springs. Existing air supply units mainly include an air compressor, valves, an air dryer, an electronic control board, and a motor. They typically suffer from the following drawbacks:

[0003] (1) Most commercially available air supply devices for air suspension systems have integrated valve pumps and air compressors with the air compressor assembly located on one side of the motor (see patent CN106232398A), resulting in poor dynamic performance. On the one hand, the two sets of pistons in this type of compressor move in the same direction, and the inertial forces are superimposed, which will generate large vibrations and noise. On the other hand, its single-sided distribution means that the counterweight on the rotor may shift due to long-term operation or accidental impact, resulting in an uneven load distribution when the rotor rotates at high speed, thereby reducing the service life of the machine. While existing air compressors with dual cylinders distributed on both sides of the motor can improve the dynamic performance of the compressor, they mostly do not integrate valve groups and other components, and cannot be applied to the field of air suspension systems.

[0004] (2) In addition, the components of the existing gas supply device are mostly connected in an independent manner, resulting in low installation efficiency, low integration, unreasonable space utilization, and failure to meet the requirements of lightweighting.

[0005] Therefore, the present invention aims to provide an air supply device with good dynamic performance and a high degree of integration. Summary of the Invention

[0006] Therefore, the present invention provides an integrated gas supply device to overcome the above-mentioned defects in the prior art.

[0007] An integrated air supply device includes an air compression unit, which comprises two sets of air compressors respectively mounted on both sides of a motor. The output shafts at both ends of the motor are drively connected to the air compressors to enable the air compressors to compress air. It also includes a solenoid valve assembly arranged in a valve block connected to the air compression unit. The valve block has a gas passage for forming an air path, through which the air compressed by the air compressors is distributed by the solenoid valve assembly.

[0008] Preferably, the valve block and its internal solenoid valve assembly are arranged between the two air compressors and located on the side of the motor.

[0009] Preferably, it also includes an electronic control unit, wherein the motor and solenoid valve assembly are electrically connected to the electronic control unit, and the electronic control unit is installed on the same side of the motor and valve block.

[0010] Preferably, it further includes an air dryer, which is constructed on the valve block. The compressed air outlet of the air compressor is connected to the inlet of the air dryer through the gas channel, and the outlet of the air dryer is connected to the solenoid valve assembly in the valve block through the gas channel.

[0011] Preferably, the system further includes an air inlet disposed on the valve block and connected to the air circuit of the air compressor. The valve block is mounted on the motor, and the air hole on the motor housing is connected to the gas passage on the valve block. The air inlet can be connected to the air hole through the gas passage.

[0012] Preferably, the air compressor is a single-cylinder piston air compressor, which includes a crankcase connected to the motor housing and a crank-connecting rod assembly disposed inside the crankcase to drive the piston to reciprocate along the piston chamber to compress gas. The rotor assembly of the motor is fitted in the housing, and the output shafts at both ends of the rotor assembly are connected to the crank-connecting rod assembly located in the crankcase.

[0013] Preferably, an air outlet connection surface F is constructed above the crankcase of the air compressor, located inside the piston cylinder. The air outlet of the compressed air outlet passage of the air compressor is constructed on the air outlet connection surface F. The bottom sides of the valve block are sealed and installed on the air outlet connection surface F so that the air outlet passage of the air compressor and the gas passage of the valve block are interconnected.

[0014] Preferably, the air dryer has two drying canisters, which are integrated and distributed on both sides of the valve block, and are symmetrically distributed above the air compressor on the corresponding side.

[0015] Preferably, the valve block is further provided with a first air pipe connector connected to the air storage tank, an exhaust port, and several second air pipe connectors connected to corresponding air springs, and the gas passage includes:

[0016] Air passage one, with its two ends connected to the air inlet end of the air pipe connector one and the air inlet side of the air compressor respectively, and a solenoid valve one is provided on the air passage one;

[0017] Air passage two, with its two ends connected to the air inlet end of the air pipe connector one and the air outlet end of the air dryer respectively, and solenoid valve two is provided on air passage two;

[0018] Air passage four, one end of which is connected to the air outlet of the air dryer, and the other end of air passage four is connected to the corresponding air pipe connector two through several air passage five. Each air passage five is equipped with a solenoid valve four, and each air passage four is equipped with a solenoid valve three.

[0019] Air passage three, whose two ends are respectively connected to the air intake side of the air compressor and the solenoid valve three, the solenoid valve three being a two-position three-way solenoid valve;

[0020] An exhaust gas path is provided, with one end connected to the exhaust port and the other end connected to the gas path between the air compressor and the air dryer. A solenoid valve is installed on the exhaust gas path.

[0021] The intake air passage is connected at both ends to the atmosphere and the intake side of the air compressor, respectively.

[0022] Preferably, a safety valve is connected between the air intake passage and the air outlet of the air compressor via an air passage, and the safety valve is disposed in the valve block.

[0023] The present invention has the following advantages:

[0024] (1) The air supply device of the present invention has two cylinders symmetrically distributed on both sides of the motor, which effectively improves the dynamic performance of the air supply device. Since the pistons on both sides run in opposite directions, their inertial forces cancel each other out, the vibration is reduced during the air compression process, improving the running stability and effectively reducing noise, and extending the service life of the machine. On the other hand, the distribution method of valve pump integrated with dryer and other components allows the compressor with two cylinders symmetrically distributed on both ends of the motor to be applied to the field of air suspension system, which improves the energy efficiency ratio of air compression, so that the machine can convert energy more efficiently during operation, reduce energy waste, and improve the overall working efficiency.

[0025] (2) The present invention places the solenoid valve group between two symmetrically distributed air compressors and installs it above the motor housing. On the one hand, due to the close cooperation between the various mechanisms and the compact layout, the integration of the device is improved. On the other hand, during the process of installing the solenoid valve group on the motor, the air compressor outlet end and the gas channel in the valve block are simultaneously sealed and connected. Furthermore, the electronic control unit is connected to the motor and the solenoid valve group on the same side, which simplifies the layout of the air pipeline and the circuit, which is conducive to the lightweight requirements of the device and also more conducive to assembly and subsequent operation and maintenance.

[0026] (3) The air inlet of the present invention is set on the solenoid valve group, and the gas is connected between the solenoid valve group and the motor. The air entering through the air inlet can enter the motor housing through the air hole, taking away some of the heat generated during the operation of the motor, thereby reducing the operating temperature of the motor and improving the operating efficiency of the device. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a rear perspective view of the present invention;

[0029] Figure 3 This is a schematic diagram of the valve block integrating the solenoid valve assembly and the air dryer of the present invention.

[0030] Figure 4 This is a schematic diagram of the installation structure of the air compressor, motor, and electronic control unit of the present invention;

[0031] Figure 5 This is a top view of the structure of the present invention;

[0032] Figure 6 For the present invention Figure 5 A schematic diagram of the cross-sectional structure of B-B';

[0033] Figure 7 For the present invention Figure 6 Enlarged structural diagram of part A in the middle;

[0034] Figure 8 For the present invention Figure 5 A schematic diagram of the cross-sectional structure between C and C';

[0035] Figure 9 This is a schematic diagram of the connection structure of the gas passage and solenoid valve assembly inside the valve block of the present invention.

[0036] In the picture:

[0037] 1-Motor; 2-Electrical control unit; 3-Solenoid valve assembly; 4-Air dryer; 5-Air compressor; 6-Valve block; 10-Air tank; 20-Air spring;

[0038] 101-Casing; 102-Rotor assembly; 103-Air vent; 401-Drying tank;

[0039] 501-Crankcase; 502-Piston; 503-Piston chamber; 504-Crankshaft connecting rod assembly; 505-Exhaust passage; 506-Piston cylinder; F-Intake port connection surface; 507-Exhaust port; 508-Exhaust chamber; 509-One-way exhaust valve assembly; 510-Intake port; 511-One-way intake valve assembly;

[0040] 601 - Air Inlet; 602 - Air Pipe Connector 1; 603 - Exhaust Port; 604 - Air Pipe Connector 2; 605 - Airway 1; 606 - Airway 2; 607 - Airway 3; 608 - Airway 4; 609 - Airway 5; 610 - Pressure Sensor; 611 - Solenoid Valve 1; 612 - Solenoid Valve 2; 613 - Solenoid Valve 3; 614 - Solenoid Valve 4; 615 - Exhaust Airway; 616 - Solenoid Valve 5; 617 - Air Inlet Airway; 618 - Safety Valve; 619 - One-Way Inlet Valve 2; S1 - First Mounting Surface; S2 - Second Mounting Surface; S3 - Third Mounting Surface; S4 - Fourth Mounting Surface; Detailed Implementation

[0041] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0042] like Figures 1 to 9 As shown, the present invention provides an integrated air supply device, which is mainly applicable to, but not limited to, the field of air suspension systems. It includes an air compression unit, which includes a motor 1 and two sets of air compressors 5 respectively installed on both sides of the motor 1. The output shafts at both ends of the motor 1 are connected to the air compressors 5 to enable the air compressors 5 to compress air.

[0043] The integrated air supply device also includes a solenoid valve assembly 3, which is arranged in a valve block 6 connected to the air compression unit. The valve block 6 has a gas passage for forming an air path, and the air compressed by the air compressor 5 is distributed by the solenoid valve assembly 3 through the gas passage.

[0044] In a preferred embodiment of the present invention, the valve block 6 and its internal solenoid valve assembly 3 are arranged between the two air compressors 5 and located on one side of the motor 1. This layout effectively utilizes the space between the air compressors 5 and reduces the volume of the air supply device.

[0045] In another embodiment of the present invention, the integrated gas supply device further includes an electronic control unit 2. The motor 1 and the solenoid valve group 3 are electrically connected to the electronic control unit 2. The electronic control unit 2 is installed on the same side of the motor 1 and the valve block 6 in a way that saves wiring, thereby reducing the circuit layout. As shown in the figure, the electronic control unit 2 is installed on the first mounting surface S1 of the valve block 6. Of course, the electronic control unit 2 can also be installed in other locations according to actual production needs.

[0046] In another embodiment of the present invention, the integrated air supply device further includes an air dryer 4 connected to the air passage of the valve block 6. In this embodiment, the air dryer 4 is constructed on the valve block 6. Preferably, the air dryer 4 is integrated and distributed on the valve block 6, which can improve the assembly efficiency and airtightness of the device and reduce production costs.

[0047] The compressed air outlet passage 505 of the air compressor 5 is connected to the inlet of the air dryer 4 through the gas passage, and the outlet of the air dryer 4 is connected to the solenoid valve group 3 in the valve block 6 through the gas passage.

[0048] Specifically, as shown in the attached figures, the air dryer 4 is disposed on one side of the second mounting surface S2 of the valve block 6. The second mounting surface S2 is constructed on the side of the valve block 6 away from the motor 1. The air dryer 4 may have one or more drying tanks 401, the interior of which is filled with drying molecular sieves. Preferably:

[0049] The air dryer 4 has two drying canisters 401, which are integrated and distributed on both sides of the valve block 6, and are symmetrically distributed above the air compressor 5 on the corresponding sides. This arrangement allows the air supply device to maintain a square shape and improves its compactness.

[0050] Furthermore, in this embodiment of the invention, the air compressor 5 is a single-cylinder piston air compressor, which includes a crankcase 501 sealed to the housing 101 of the motor 1 and a crank-connecting rod assembly 504 disposed inside the crankcase 501 to drive the piston 502 to reciprocate along the piston chamber 503 to compress gas. The rotor assembly 102 of the motor 1 is fitted in the housing 101, and the output shafts at both ends of the rotor assembly 102 are connected to the crank-connecting rod assembly 504 located in the crankcase 501.

[0051] To improve gas compression stability, the piston chamber 503 is connected to the exhaust chamber 508 via the exhaust port 507. The exhaust chamber 508 is interconnected with the outlet passage 505. A one-way exhaust valve assembly 509 is installed at the exhaust port 507, which controls the one-way exhaust from the piston chamber 503 to the exhaust chamber 508. The piston 502 is provided with an intake port 510 and a one-way intake valve assembly 511, which controls the one-way intake from the crankcase 501 to the piston chamber 503 via the intake port 510. The one-way exhaust valve assembly 509 and the one-way intake valve assembly 511 are preferably valve plates.

[0052] When the air compression unit is working, the crank connecting rod assembly 504 is driven by the motor 1 to operate, thereby driving the piston 502 to reciprocate along the piston chamber 503. When the space of the piston chamber 503 increases, the one-way intake valve assembly 511 opens, and the air entering from the intake port 601 enters the piston chamber 503 through the crankcase 501 and the intake port 510. At this time, the one-way exhaust valve 509 is closed. When the space of the piston chamber 503 decreases, the one-way intake valve assembly 511 closes, and the compressed air in the piston chamber 503 enters the exhaust chamber 508 through the exhaust port 507 and the one-way exhaust valve 509 is opened. The compressed air finally flows into the gas passage of the valve block 6 from the exhaust passage 505.

[0053] When air compressor 5 is operating, when the connecting rod of the left crank-connecting rod assembly 504 is at its highest point, the left piston chamber 503 is in a compressed air state. At the same time, when the connecting rod of the right crank-connecting rod assembly 504 is at its lowest point, the right piston chamber 503 is in a suction state. As motor 1 operates, the suction and compressed air states of the left and right piston chambers 503 are switched, and this cycle continues. The twin-cylinder air compressor has significant advantages in providing smooth operation, reducing noise, and adapting to large-displacement applications.

[0054] Furthermore, as shown in the figure, in this embodiment of the invention, the motor 1 is mounted on the third mounting surface S3 of the valve block 6. The air hole 103 on the motor 1 housing 101 is interconnected with the gas passage on the third mounting surface S3 of the valve block 6. The valve block 6 is provided with an air inlet 601 that is connected to the air circuit of the air compressor 5. The air inlet 601 can be interconnected with the air hole 103 through the gas passage. The advantage of this arrangement is that... Figure 6 As shown in the figure, the thick line indicates the direction of air intake θ. The air entering through the air intake 601 can enter the housing 101 of the motor 1 through the air hole 103, carrying away some of the heat generated during the operation of the motor 1, thereby reducing the operating temperature of the motor 1.

[0055] In this embodiment of the invention, an air outlet connection surface F is constructed above the crankcase 501, located inside the piston cylinder 506. The air outlet of the compressed air outlet passage 505 of the air compressor 5 is constructed on the air outlet connection surface F. The bottom two sides of the valve block 6 are sealed and installed on the air outlet connection surface F to ensure that the air outlet passage 505 of the air compressor 5 and the gas passage of the valve block 6 are interconnected. Sealing rings can be provided at the sealing end faces of both to improve sealing performance. This construction method reduces the need for additional external air circuits. While completing the installation of the motor 1 and the valve block 6, the gas passage of the valve block 6 is sealed and connected to the air outlet passage 505 of the air compressor 5, simplifying the air circuit and facilitating the integration of vehicle air compressors.

[0056] As shown in the accompanying drawings, in an embodiment of the present invention, the air inlet 601 is disposed on the fourth mounting surface S4 of the valve block 6, the fourth mounting surface S4 and the first mounting surface S1 are directly opposite each other, and the fourth mounting surface S4 of the valve block 6 is also provided with an air pipe connector 602 connected to the air storage tank 10, an exhaust port 603 and several air pipe connectors 604 connected to the corresponding air springs 20.

[0057] The gas passages on valve block 6 include:

[0058] Air passage 605, with its two ends connected to the air inlet end of air pipe connector 602 and the air inlet side of air compressor 5 respectively, and solenoid valve 611 is provided on air passage 605.

[0059] Air passage 2 606, with its two ends connected to the air inlet end of air pipe connector 1 602 and the air outlet end of air dryer 4 respectively, and solenoid valve 2 612 is provided on air passage 2 606.

[0060] Air passage 4 608, one end of which is connected to the air outlet of the air dryer 4, and the other end of the air passage 4 608 is connected to the corresponding air pipe connector 2 604 through several air passages 5 609. Each air passage 5 609 is equipped with a solenoid valve 4 614, and the air passage 4 608 is equipped with a solenoid valve 3 613.

[0061] Air passage 3 607, its two ends are respectively connected to the air intake side of the air compressor 5 and the solenoid valve 3 613, the solenoid valve 3 613 is a two-position three-way solenoid valve;

[0062] The exhaust air passage 615 has one end connected to the exhaust port 603 and the other end connected to the air passage between the air compressor 5 and the air dryer 4. The exhaust air passage 615 is equipped with a solenoid valve 616.

[0063] An intake air passage 617 is connected at both ends to the intake side of the air compressor 5 and the air inlet 601, respectively. A safety valve 618 is connected between the intake air passage 617 and the outlet of the air compressor 5 via an air passage, and the safety valve 618 is disposed in the valve block 6.

[0064] The air intake passage 617 is equipped with a one-way air intake valve 619 to prevent the gas entering the air passage from flowing out in the reverse direction from the air intake port 601.

[0065] A pressure sensor 610 is installed on the gas passage inside the valve block 6. The pressure sensor 610 is used to detect the pressure of the gas passage.

[0066] The working principle of the gas circuit is as follows Figure 9 As shown:

[0067] 1. When inflating the air spring 20:

[0068] When air is supplied to the air spring 20 via the atmosphere: the corresponding solenoid valve 614 can be opened, the air passage 608 can be switched through solenoid valve 613, and the other solenoid valves can be closed. At this time, the outside air enters the air intake passage 617 of the valve block 6 through the air intake port 601, and after being compressed by the air compressor 5, it enters the air dryer 4 for drying. The dried air can then enter the corresponding air spring 20 through the air passage 608 to adjust the vehicle height.

[0069] When supplying air to the air spring 20 through the air tank 10: Solenoid valve 611 and its corresponding solenoid valve 614 can be opened, and solenoid valve 613 can be used to switch the air passage 607 to the air path of the air spring 20, while the other solenoid valves are closed. At this time, the air stored in the air tank 10 can be supplied to the air spring 20 through air passage 605 and air passage 607.

[0070] II. When storing gas in the gas storage tank:

[0071] When storing air in the air tank 10 via the air spring 20: Solenoid valve 2 (612) and its corresponding solenoid valve 4 (614) are opened. Solenoid valve 3 (613) switches the connection between the air spring 20 and the air compressor 5, and the remaining solenoid valves are closed. The gas in the air spring 20 is compressed by the air compressor 5 and then dried in the air dryer 4. The dried air can then enter the air tank 10 through the opened solenoid valve 2 (612).

[0072] When storing air in the air tank 10 via the atmosphere: Solenoid valve 2 (612) is opened, and solenoid valve 3 (613) disconnects the air compressor 5 from the air spring 20, while the remaining solenoid valves are closed. At this time, outside air enters the air intake passage 617 of the valve block 6 through the air inlet 601, is compressed by the air compressor 5, and then enters the air dryer 4 for drying. The dried air can then be stored in the air tank 10 through the open solenoid valve 2 (612).

[0073] III. Air dryer 4 during reverse-flushing drying:

[0074] Open solenoid valve 5 (616) and solenoid valve 4 (614), and switch the air spring 20 and the exhaust end of the air dryer 4 to be connected through solenoid valve 3 (613). Close the other solenoid valves. The air from the air spring 20 passes through the air dryer 4 in reverse and is discharged through the opened solenoid valve 5 (616). The moisture adsorbed by the desiccant in the air dryer 4 is dried by the dry air discharged by the air spring 20, which can effectively regenerate the desiccant in the air dryer 4.

[0075] IV. When the air spring 20 is deflating at high speed:

[0076] Open solenoid valve 5 616, switch the air spring 20 and the air compressor 5 to be connected by solenoid valve 3 613, and close the other solenoid valves. The gas in the air spring 20 is compressed by the air compressor 5 and discharged into the atmosphere through the opened solenoid valve 5 616.

[0077] Figure 9 This invention merely illustrates one gas path connection relationship. The gas path connection method of the gas channel inside the valve block 6 and the solenoid valve control method are merely exemplary and can be flexibly adjusted as needed.

[0078] In summary, the air supply device of the present invention, on the one hand, symmetrically distributes two cylinders on both sides of the motor, effectively improving the dynamic performance of the air supply device. Since the pistons on both sides move in opposite directions, their inertial forces cancel each other out, reducing vibration during air compression, improving operational stability, effectively reducing noise, and extending the service life of the machine. On the other hand, the distribution method of integrating valves and pumps with components such as a drying tank allows this type of compressor with two cylinders symmetrically distributed at both ends of the motor to be applied to the field of air suspension systems, improving the energy efficiency ratio of air compression, enabling the machine to convert energy more efficiently during operation, reducing energy waste, and improving overall work efficiency.

[0079] Furthermore, this invention places the solenoid valve assembly 3 between two symmetrically distributed air compressors 5 and installs it above the motor housing 101. On the one hand, the close cooperation and compact layout between the various mechanisms improve the integration of the device. On the other hand, during the installation of the solenoid valve assembly 3 on the motor 1, the air outlet of the air compressor 5 and the gas passage in the valve block 6 are simultaneously sealed and connected. Moreover, the electronic control unit 2 is connected to the side of the motor 1 and the solenoid valve assembly 3 in a nearby manner, which simplifies the layout of the air pipeline and circuit, which is beneficial to the lightweight requirements of the device and also facilitates assembly and subsequent operation and maintenance. The air inlet 601 is set on the solenoid valve assembly 3, and there is gas communication between the solenoid valve assembly 3 and the motor 1. The air entering through the air inlet 601 can enter the housing 101 of the motor 1 through the air hole 103, carrying away some of the heat generated during the operation of the motor 1, thereby reducing the operating temperature of the motor 1 and improving the operating efficiency of the device.

[0080] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. An integrated air supply device, comprising an air compression unit, the air compression unit comprising a motor (1) and two sets of air compressors (5) respectively mounted on both sides of the motor (1), the output shafts at both ends of the motor (1) being drively connected to the air compressors (5) to enable the air compressors (5) to compress air, characterized in that: It also includes a solenoid valve assembly (3), which is arranged in a valve block (6) connected to the air compression unit. The valve block (6) has a gas passage for forming an air path. The air compressed by the air compressor (5) is distributed by the solenoid valve assembly (3) through the gas passage.

2. The integrated gas supply device according to claim 1, characterized in that: The valve block (6) and its internal solenoid valve assembly (3) are arranged between the two air compressors (5) and located on one side of the motor (1).

3. The integrated gas supply device according to claim 2, characterized in that: It also includes an electronic control unit (2), the motor (1) and the solenoid valve group (3) are electrically connected to the electronic control unit (2), and the electronic control unit (2) is installed on the same side of the motor (1) and the valve block (6).

4. An integrated gas supply device according to claim 2, characterized in that: It also includes an air dryer (4), which is constructed on the valve block (6). The compressed air outlet passage (505) of the air compressor (5) is connected to the inlet of the air dryer (4) through the gas passage. The outlet of the air dryer (4) is connected to the solenoid valve group (3) in the valve block (6) through the gas passage.

5. An integrated gas supply device according to claim 1, characterized in that: It also includes an air inlet (601) provided on the valve block (6) and connected to the air passage of the air compressor (5). The valve block (6) is mounted on the motor (1). The air hole (103) on the housing (101) of the motor (1) is connected to the gas passage on the valve block (6). The air inlet (601) can be connected to the air hole (103) through the gas passage.

6. An integrated gas supply device according to claim 1, characterized in that: The air compressor (5) is a single-cylinder piston air compressor, which includes a crankcase (501) connected to the housing (101) of the motor (1) and a crank-connecting rod assembly (504) disposed inside the crankcase (501) to drive the piston (502) to reciprocate along the piston chamber (503) to compress gas. The rotor assembly (102) of the motor (1) is fitted in the housing (101), and the output shafts at both ends of the rotor assembly (102) are connected to the crank-connecting rod assembly (504) located in the crankcase (501).

7. An integrated gas supply device according to claim 1, characterized in that: The crankcase (501) of the air compressor (5) is located above the piston cylinder (506) and an air outlet connection surface F is constructed on the inner side. The air outlet of the compressed air outlet passage (505) of the air compressor (5) is constructed on the air outlet connection surface F. The bottom sides of the valve block (6) are sealed and installed on the air outlet connection surface F so that the air outlet passage (505) of the air compressor (5) and the gas passage of the valve block (6) are interconnected.

8. An integrated gas supply device according to claim 4, characterized in that: The air dryer (4) has two drying canisters (401), which are integrated and distributed on both sides of the valve block (6), and are symmetrically distributed above the air compressor (5) on the corresponding side.

9. An integrated gas supply device according to claim 1, characterized in that: The valve block (6) is also provided with a first air pipe connector (602) connected to the air storage tank (10), an exhaust port (603), and several second air pipe connectors (604) connected to the corresponding air springs (20). The gas passage includes: Air passage 1 (605) is connected at both ends to the air inlet end of air pipe connector 1 (602) and the air inlet side of air compressor (5), respectively. Solenoid valve 1 (611) is provided on air passage 1 (605). Air passage two (606) is connected at both ends to the air inlet of the air pipe connector one (602) and the air outlet of the air dryer (4), respectively. Solenoid valve two (612) is provided on the air passage two (606). Air passage four (608) is connected at one end to the air outlet of the air dryer (4), and the other end of the air passage four (608) is connected to the corresponding air pipe connector two (604) through several air passage five (609). Each air passage five (609) is equipped with a solenoid valve four (614), and the air passage four (608) is equipped with a solenoid valve three (613). Air passage three (607) is connected at both ends to the air intake side of the air compressor (5) and the solenoid valve three (613), the solenoid valve three (613) being a two-position three-way solenoid valve; An exhaust gas path (615) is provided, with one end connected to the exhaust port (603) and the other end connected to the gas path between the air compressor (5) and the air dryer (4). A solenoid valve (616) is provided on the exhaust gas path (615). The intake air passage (617) is connected at both ends to the atmosphere and the intake side of the air compressor (5).

10. An integrated gas supply device according to claim 9, characterized in that: A safety valve (618) is connected between the air intake passage (617) and the air outlet of the air compressor (5) via an air passage. The safety valve (618) is located in the valve block (6).

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