Vehicle-mounted screw air compressor system

Abstract

The utility model provides a vehicle-mounted screw air compressor system which comprises a compressor body, an exhaust pipe, a cooler, a temperature control oil filter seat, an oil-gas separator and a pressure maintaining outlet pipeline. The exhaust end of the cooler is connected with the air inlet end of the temperature control oil filter seat through a metal hose, the exhaust end of the temperature control oil filter seat is connected with the air inlet end of the pressure maintaining valve, the exhaust end of the pressure maintaining valve is connected with the air inlet end of the oil-gas separator, and the exhaust end of the oil-gas separator is connected with the air inlet end of the pressure maintaining outlet pipeline. The series connection relation of all key components in a compressed air flow path is defined, it is ensured that compressed air can be sequentially subjected to cooling, filtering, separating and other treatment, high-quality compressed air is obtained, and effective output of the compressed air is ensured.

Description

Technical Field

[0001] This utility model relates to a vehicle-mounted air compressor technology, and more specifically, to a vehicle-mounted screw air compressor system that can be powered by a vehicle-mounted DC power supply and can operate reliably in complex environments. Background Technology

[0002] Air compressors, as an important general-purpose power device, are widely used in various fields such as industrial production, transportation, and construction. Among them, screw air compressors are increasingly widely used in modern industry due to their advantages such as compact structure, stable operation, low noise, large discharge capacity, and high efficiency. However, traditional screw air compressors still have some significant technical bottlenecks in vehicle applications and complex environments, which limit their application range and reliability.

[0003] Currently, screw air compressors on the market are mainly divided into two types: stationary and mobile. Stationary screw air compressors are typically used in factories, workshops, and other similar locations. They have relatively low requirements for power supply and environment, usually powered by three-phase AC power, and are relatively lenient in terms of ambient temperature and humidity. Mobile screw air compressors, on the other hand, are mainly used in construction sites, mines, and other similar locations. To adapt to mobility, they are usually equipped with an independent diesel or gasoline engine as the driving power source, and the compressor is driven by mechanical transmission.

[0004] Specifically, a traditional screw air compressor typically comprises the following main components: a compressor unit, a motor drive system, a cooling system, a lubrication system, a control system, and a housing protection system. The compressor unit uses one or more pairs of meshing screw rotors; the rotation of these rotors compresses the air. The motor drive system uses a three-phase AC asynchronous motor or a permanent magnet synchronous motor, transmitting power to the compressor unit via mechanical transmission components such as couplings. The cooling system typically employs air cooling or water cooling to cool the high-temperature compressed air and the motor. Air cooling systems primarily use forced heat dissipation through fans, while water cooling systems remove heat through coolant circulation.

[0005] While traditional screw air compressors perform well in many applications, they still face some prominent technical challenges in automotive applications and complex environments:

[0006] Power Supply Limitations: Traditional screw air compressors primarily use three-phase AC power, which restricts their application in vehicle environments. Vehicle power systems are typically DC, requiring an additional power inverter to convert DC to three-phase AC. This increases system complexity, cost, and weight, and also leads to energy conversion losses and reduced energy efficiency. This limitation is particularly pronounced in outdoor environments where AC power is unavailable.

[0007] Poor environmental adaptability: Traditional screw air compressors are designed primarily for indoor or relatively stable working environments. Their protective shells typically use sheet metal structures, which have relatively weak strength and corrosion resistance, making them unsuitable for the challenges of complex outdoor environments. In harsh environments such as extreme high and low temperatures, rain, snow, and dust, the sheet metal shell is prone to corrosion, deformation, or even damage, leading to the exposure of internal components and thus posing safety hazards.

[0008] Difficulty starting at low temperatures: In extreme low-temperature environments, the viscosity of the lubricating oil in traditional screw air compressors increases significantly, resulting in poor oil flow and difficulty in forming an effective lubricating film. This leads to difficulty starting the compressor or even prevents it from starting altogether. Furthermore, low temperatures can affect the normal operation of the control system, causing sensor malfunctions, electrical component failures, and other problems, thereby reducing system reliability. Simultaneously, low temperatures also cause the air entering the compressor to be too cold, leading to frost formation inside the equipment, further impacting the compressor's performance and lifespan.

[0009] Low heat dissipation efficiency: Traditional air-cooled screw air compressors have limited heat dissipation efficiency under prolonged high-load operation, which can easily lead to motor overheating, affecting motor lifespan and operational stability. This heat dissipation problem is particularly pronounced in high-temperature summer environments. Water-cooled screw air compressors, on the other hand, require water tanks and pumps, increasing system complexity.

[0010] Bulky structure and poor mobility: Traditional screw air compressors are typically large and heavy, making them unsuitable for vehicle-mounted mobility. Installing a traditional screw air compressor in a vehicle requires significant modifications, increasing costs and adding to the vehicle's load due to the unit's weight. Utility Model Content

[0011] The purpose of this invention is to overcome the above-mentioned shortcomings of the existing technology and provide an on-board screw air compressor system that can be directly powered by the vehicle's DC power supply and can operate stably and reliably in extreme environments.

[0012] To achieve the above objectives, the present invention adopts the following technical solution:

[0013] A vehicle-mounted screw air compressor system includes a compressor body, an exhaust pipe, a cooler, a temperature-controlled oil filter holder, an oil-gas separator, and a pressure-maintaining outlet pipe. The exhaust end of the compressor body is connected to the inlet end of the cooler via the compressor body exhaust pipe and the exhaust pipe. The exhaust end of the cooler is connected to the inlet end of the temperature-controlled oil filter holder via a metal hose. The exhaust end of the temperature-controlled oil filter holder is connected to the inlet end of the pressure-maintaining valve. The exhaust end of the pressure-maintaining valve is connected to the inlet end of the oil-gas separator. The exhaust end of the oil-gas separator is connected to the inlet end of the pressure-maintaining outlet pipe. The system clarifies the series connection relationship of each key component in the compressed air flow path, ensuring that the compressed air can undergo cooling, filtration, and separation sequentially to obtain high-quality compressed air and guaranteeing effective compressed air output.

[0014] Preferably, the cooler includes an oil cooler and an air cooler. By incorporating both an oil cooler and an air cooler, the temperature of the compressed air can be reduced more effectively, cooling efficiency can be improved, and the cooling effect in the compressed air flow path can be ensured.

[0015] Preferably, a heater for heating the lubricating oil is also included. Adding a heater ensures good fluidity of the lubricating oil even at low temperatures, preventing starting difficulties caused by lubricating oil solidification, thus guaranteeing normal operation of the entire system at low temperatures and expanding the system's capability for use in such environments.

[0016] Preferably, the heater is an electric heater. Specifying that the heater is an electric heater facilitates control and enables precise temperature control, provides a more reliable heating method, and lays the foundation for subsequent temperature control.

[0017] Preferably, the system also includes a temperature sensor for monitoring the lubricating oil temperature and controlling the on / off state of the electric heater. The addition of a temperature sensor and control function enables the system to automatically adjust the on / off state of the electric heater based on the lubricating oil temperature, achieving precise control of the lubricating oil temperature, further improving the reliability and efficiency of system operation, and demonstrating the system's intelligence.

[0018] Preferably, the compressor body is driven by a liquid-cooled DC motor. Clearly defining the compressor as being driven by a liquid-cooled DC motor allows the system to directly utilize the vehicle's DC power supply without requiring additional power conversion devices, improving energy efficiency, reflecting the vehicle-mounted nature of the system, and serving as a fundamental guarantee for the effective utilization of system energy.

[0019] Preferably, the liquid-cooled DC motor is connected to the compressor body via a splined shaft and a coupling. Clearly defining the connection between the liquid-cooled DC motor and the compressor via a splined shaft and coupling ensures the reliability and stability of power transmission and defines the power transmission method of the system.

[0020] Preferably, the system also includes a container housing, within which the compressor body, exhaust pipe, cooler, temperature-controlled oil filter, oil-gas separator, liquid-cooled DC motor, and heater are installed. Installing the main components within the container housing achieves system integration and overall protection, improving system reliability and adaptability. Especially in the complex environment of a vehicle, it provides a more stable operating state, increasing the system's applicability.

[0021] Preferably, the bottom of the container shell uses a through-beam combined with a detachable fixing plate. This design, with the through-beam and detachable fixing plate at the bottom of the container shell, simplifies and reliably connects the system to the vehicle, improves installation efficiency and overall stability, and enhances installability.

[0022] Preferably, the system also includes a vibration isolator to mitigate the vibration of the liquid-cooled DC motor. The addition of the vibration isolator further reduces motor vibration, thereby reducing noise, improving system stability and service life, and further enhancing system reliability.

[0023] In summary, the vehicle-mounted screw air compressor system provided by this utility model solves the technical problems mentioned in the background art through the following structure and features:

[0024] Liquid-cooled DC motor: This type of motor is powered directly by the vehicle's DC power supply, eliminating the need for an additional power conversion device and overcoming the limitations of power supply methods. Simultaneously, liquid cooling offers superior heat dissipation, lower energy consumption, smaller motor size, and more compact installation space, thus improving the system's energy efficiency.

[0025] Integrated temperature control system: Through the coordinated operation of components such as heaters and temperature sensors, precise control of lubricating oil temperature is achieved, ensuring reliable system startup in low-temperature environments; and combined with the cooling system, normal operation in high-temperature environments is ensured, solving the reliability problems of low-temperature startup and high-temperature operation.

[0026] Series-connected compressed air flow path: Through the series connection of components such as cooler, temperature-controlled oil filter seat and oil-gas separator, the compressed air is effectively processed, ensuring the quality of compressed air.

[0027] Container housing and installation structure: The structural design of the container housing and bottom through-beams combined with detachable fixing plates gives the system good protection and ease of installation, and improves the system's vehicle adaptability.

[0028] Vibration isolation device: Vibration isolators reduce motor vibration, reduce noise, and improve system reliability.

[0029] By combining the above structures, this utility model can operate reliably in a vehicle environment and has good environmental adaptability, thereby solving many problems existing in the prior art. Attached Figure Description

[0030] Figure 1 This is a top view of the vehicle-mounted screw air compressor system according to an embodiment of the present invention.

[0031] Figure 2 This is a side view of a vehicle-mounted screw air compressor system according to an embodiment of the present invention.

[0032] Figure 3 This is a structural schematic diagram of the external appearance of a vehicle-mounted screw air compressor system according to an embodiment of the present invention.

[0033] Figure 4 This is a schematic diagram of the structure of a spline shaft according to an embodiment of the present invention. Detailed Implementation

[0034] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0035] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, illustrates the specific implementation of the vehicle-mounted screw air compressor system of this utility model. It should be noted that these embodiments are merely illustrative and should not be considered as limiting the scope of protection of this utility model.

[0036] Figure 1 This is a top view of the vehicle-mounted screw air compressor system according to an embodiment of the present invention. Figure 2 This is a side view of the structural diagram of a vehicle-mounted screw air compressor system according to an embodiment of the present invention. Figure 3 This is a structural schematic diagram of the external appearance of a vehicle-mounted screw air compressor system according to an embodiment of this utility model. Figure 1 , Figure 2 and Figure 3 As shown, this utility model provides a vehicle-mounted screw air compressor system, which mainly includes a compressor body (15), an exhaust pipe (1), a cooler (3), a temperature-controlled oil filter seat (7), an oil-gas separator (13), a pressure-maintaining outlet pipe (5), a liquid-cooled DC motor (19), a heater (9), a temperature sensor (11), a container cover (31), a vibration isolator (27), and other components, which are connected by connecting parts such as a splined shaft (30) and a coupling (26).

[0037] In this embodiment, the exhaust end of the compressor body (15) is connected to the intake end of the cooler (3) through the body exhaust pipeline (14) and the exhaust pipe (1). The exhaust end of the cooler (3) is connected to the intake end of the temperature control oil filter base (7) through a metal hose (6). The exhaust end of the temperature control oil filter base (7) is connected to the intake end of the pressure maintaining valve (12). The exhaust end of the pressure maintaining valve (12) is connected to the intake end of the oil-gas separator (13). The exhaust end of the oil-gas separator (13) is connected to the intake end of the pressure maintaining outlet pipeline (5). At the intake end of the compressor body (15), a metal hose (16) is also provided for connecting the intake valve (17). This metal hose (16) uses a bellows that is pressure-resistant and high-temperature-resistant, which can not only ensure the sealing of the pipeline, but also play a role in buffering vibration and compensating for deformation, ensuring the stable and reliable intake process. The intake hose (18) is connected to the outside of the intake valve (17) and is used to suck fresh air from the outside into the compressor. The intake hose (18) can use a rubber hose that is pressure-resistant and wear-resistant to ensure the reliability of the intake process.

[0038] During specific implementation, the screw rotor inside the compressor body (15) rotates at a high speed driven by the liquid-cooled DC motor (19) to compress the inhaled air. The compressed high-temperature and high-pressure air is first discharged through the body exhaust pipeline (14), then enters the exhaust pipe (1), and then enters the cooler (3) for cooling. Among them, the metal hose (2) uses a corrugated metal hose that is high-temperature-resistant and pressure-resistant, which can not only ensure the sealing of the pipeline, but also play a role in buffering vibration and compensating for deformation. The exhaust port of the cooler (3) is connected to the temperature control oil filter base (7) through a metal hose (6). The temperature control oil filter base (7) can control the temperature of the lubricating oil to ensure the stable operation of the system. After passing through the temperature control oil filter base (7), the compressed air passes through the pressure maintaining valve (12), and then flows through the oil-gas separator (13) to separate the oil from the compressed air. Finally, the processed compressed air is output through the pressure maintaining outlet pipeline (5) for use by external equipment. This series flow path design can ensure that the compressed air is effectively cooled and separated, thereby obtaining high-quality compressed air and providing reliable guarantee for subsequent applications.

[0039] Furthermore, in this embodiment, the cooler (3) includes an oil cooler and an air-cooled cooler. [[ID=VII]] [[ID=VIII]]

[0040] [[ID=IX]]Specifically, the cooler (3) adopts an "eye" shape structure, such as [[ID=X]] Figure 2As shown, two oil coolers are arranged vertically side by side and connected in series by flexible hoses, while an air-cooled cooler is installed horizontally above the oil coolers. This structural design enables efficient cooling within a limited space. The oil coolers are mainly used to cool compressed air, while the air-cooled coolers are mainly used for auxiliary heat dissipation. The high-temperature compressed air undergoes initial cooling in the oil coolers and then further cooling in the air-cooled coolers, ensuring that the temperature of the compressed air is reduced to a suitable level, improving the quality of the compressed air, and effectively protecting the normal operation of the oil cooling system. To enhance the heat dissipation effect of the air-cooled cooler, a cooling fan (4) is installed on one side of the air-cooled cooler in this embodiment. When the cooling fan (4) is running, the airflow generated can effectively remove the heat from the air-cooled cooler, thereby improving the overall cooling efficiency.

[0041] Furthermore, in this embodiment, a heater (9) for heating the lubricating oil is also included.

[0042] Specifically, the heater (9) is installed at the bottom of the oil-gas tank (10) to heat the lubricating oil inside the tank. In low-temperature environments, when the controller (24) detects that the lubricating oil temperature is lower than the set value, the heater (9) will automatically start to heat the lubricating oil, improve its fluidity, and prevent the lubricating oil from solidifying at low temperatures, which would cause difficulty in starting the compressor. This design can effectively solve the problem of low-temperature start-up and ensure the reliable operation of the system in extreme low-temperature environments. An oil filter (8) is installed on the lubricating oil circulation pipeline of the oil-gas tank (10) to filter impurities in the lubricating oil and ensure the cleanliness of the lubricating oil. The oil filter (8) uses a high-precision filter element, which can effectively remove particulate matter and contaminants from the lubricating oil, thereby avoiding damage to the components in the lubricating oil system caused by impurities and extending the service life of the lubricating oil, ensuring the long-term stable and reliable operation of the entire system.

[0043] Furthermore, in this embodiment, the heater (9) is an electric heater.

[0044] In practice, the heater (9) uses resistance wire electric heating, and its heating power can be adjusted through the control circuit to achieve precise temperature control. Compared with traditional fuel heating, electric heaters are cleaner, more efficient and environmentally friendly, while also simplifying the system structure and reducing maintenance costs.

[0045] Furthermore, in this embodiment, the system also includes a temperature sensor (11) for monitoring the lubricating oil temperature and controlling the opening and closing of the electric heater (9).

[0046] Specifically, a temperature sensor (11) is installed at the bottom of the oil-gas tank (10) to monitor the temperature of the lubricating oil in real time and feed the temperature signal back to the controller (24). When the controller (24) detects that the lubricating oil temperature is lower than the set value, it will automatically start the electric heater (9) to heat the lubricating oil. When the temperature is higher than the set value, it will stop heating. This automatic temperature control system can ensure that the lubricating oil is always kept within the optimal operating temperature range, thereby ensuring the stable operation of the system and the lubrication effect, and improving the operational reliability of the system.

[0047] Furthermore, in this embodiment, the compressor body (15) is driven by a liquid-cooled DC motor (19).

[0048] Specifically, the liquid-cooled DC motor (19) is powered directly by the vehicle's DC power supply, eliminating the need for additional power conversion devices. This greatly simplifies the system structure, reduces system costs, and improves the system's energy utilization efficiency. Simultaneously, the liquid-cooled DC motor (19) uses liquid cooling, which effectively reduces the motor's operating temperature, thereby extending its service life. Compared to traditional three-phase AC motors, the liquid-cooled DC motor offers advantages such as smaller size, higher efficiency, and lower noise, making it more suitable for vehicle environments and fully utilizing the advantages of the vehicle's power supply.

[0049] Furthermore, in this embodiment, the liquid-cooled DC motor (19) is connected to the compressor body (15) via a splined shaft (30) and a coupling (26).

[0050] In specific implementation, such as Figure 4 As shown, the output shaft of the liquid-cooled DC motor (19) has an embedded spline structure. A specially customized spline shaft (30) is inserted into the motor output shaft. The other end of the spline shaft (30) is connected to the coupling (26), and the other end of the coupling (26) is connected to the input shaft of the compressor body (15). This connection method can reliably transmit motor power and reduce vibration during motor operation. Due to the embedded spline shaft connection method, the axial movement problem during high-speed motor operation can be effectively avoided, improving the reliability of the connection and facilitating installation and maintenance.

[0051] Furthermore, in this embodiment, a container housing (31) is also included, and the compressor body (15), exhaust pipe (1), cooler (3), temperature-controlled oil filter seat (7), oil-gas separator (13), liquid-cooled DC motor (19) and heater (9) are installed inside the container housing (31).

[0052] In specific implementation, such as Figure 3As shown, the container housing (31) adopts an integral frame structure, which can provide good protection for the internal components and prevent damage from the external environment. The compressor body (15), exhaust pipe (1), cooler (3), temperature-controlled oil filter seat (7), oil-gas separator (13), liquid-cooled DC motor (19) and heater (9) are all installed inside the container housing (31), forming a compact integral unit that is easy to move and transport. This allows the compressor to adapt to the complex environment of the vehicle and improves the overall reliability and applicability of the system.

[0053] Furthermore, in this embodiment, the bottom of the container shell (31) is equipped with a through-type longitudinal beam and a detachable fixing plate.

[0054] In specific implementation, the bottom of the container shell (31) is provided with two or more through-beams. The longitudinal beams are made of high-strength steel and have sufficient support strength. At the same time, detachable fixing plates are provided on the longitudinal beams. These fixing plates can be connected to the vehicle chassis by bolts to realize the quick installation and disassembly of the compressor system. This structural design can greatly reduce the difficulty and time of installation, improve installation efficiency, and make it more robust and reliable. In addition, in order to ensure that the temperature inside the container is within a suitable range, this embodiment also installs an air conditioner (21) inside the container shell (31). The air conditioner (21) can automatically adjust cooling or heating according to the internal temperature to provide a stable working environment for the compressor system. In order to supply power to the control system and other components, this embodiment is also equipped with a power inverter (20), which can convert part of the vehicle's DC power supply into AC power to ensure the normal operation of the control system and other components that require AC power. To ensure that the controller (24) can work normally in low-temperature environments, a fan heater (23) is also installed inside the controller (24) in this embodiment. When the ambient temperature is too low, the fan heater (23) will automatically start to heat the inside of the controller, ensuring that the controller can work normally in low-temperature environments, thereby ensuring the reliability of the entire control system. At the same time, in order to accurately control the ambient temperature inside the container, a temperature sensor (22) is also installed inside the container shell (31) to monitor the ambient temperature inside the container and feed the temperature signal back to the controller (24) so ​​that the air conditioner (21) can automatically adjust according to the internal temperature.

[0055] Furthermore, in this embodiment, the system also includes a vibration isolator (27) for mitigating the vibration of the liquid-cooled DC motor (19).

[0056] In specific implementation, such as Figure 2As shown, the vibration isolator (27) is installed on the bracket of the liquid-cooled DC motor (19). Its main function is to absorb the vibration generated by the motor during operation, which can prevent the vibration from affecting the compressor body and other components and reduce noise. The vibration isolator (27) can be made of vibration damping materials such as rubber pads or springs, which have good vibration damping effect, thereby ensuring the smoothness and reliability of the system operation.

[0057] To ensure the stability and reliability of the entire system, this embodiment also adopts the following structural design: the liquid-cooled DC motor (19) and the compressor body (15) are supported and fixed by a central bracket (25). The central bracket (25) is made of high-strength material, which can ensure the stability of the motor and compressor body installation and effectively reduce vibration. In order to avoid the pipeline from deforming due to temperature changes or vibration, resulting in leakage, the compressed air pipeline is connected by a pipeline compensator (28). The pipeline compensator (28) is made of flexible material, which can compensate for the axial, lateral and angular displacement of the pipeline and ensure the sealing of the pipeline. At the same time, in order to solve the problem of excessively low inlet temperature, this embodiment installs a heated air inlet louver (32) at the air inlet of the container shell (31). The heated air inlet louver (32) can heat the air entering the container, thereby ensuring that the compressor inlet temperature is within a suitable range and avoiding the compressor performance degradation due to excessively low temperature. Finally, in order to reliably secure the entire vehicle-mounted screw air compressor system to the vehicle, a vehicle connection device (33) is provided at the bottom of the container shell (31). The vehicle connection device (33) can connect the compressor system to the vehicle chassis by bolts or other means to ensure that the compressor system can operate stably and reliably during vehicle operation.

[0058] In summary, this embodiment provides a detailed description of the specific implementation of the vehicle-mounted screw air compressor system of this utility model, including the compressed air flow path, the specific structure, installation method, and connection relationship of components such as the cooler, heater, and motor, as well as the technical effects of each part. Through the above detailed description, the technical solution and implementation effects of this utility model can be fully understood, while ensuring the claims are fully supported, thereby guaranteeing the patent protection scope of this utility model.

Claims

1. A vehicle-mounted screw air compressor system, characterized in that, The system includes a compressor body (15), an exhaust pipe (1), a cooler (3), a temperature-controlled oil filter seat (7), an oil-gas separator (13), and a pressure-maintaining outlet pipe (5). The system is characterized in that: the exhaust end of the compressor body (15) is connected to the inlet end of the cooler (3) via the body exhaust pipe (14) and the exhaust pipe (1); the exhaust end of the cooler (3) is connected to the inlet end of the temperature-controlled oil filter seat (7) via a metal hose (6); the exhaust end of the temperature-controlled oil filter seat (7) is connected to the inlet end of the pressure-maintaining valve (12); the exhaust end of the pressure-maintaining valve (12) is connected to the inlet end of the oil-gas separator (13); and the exhaust end of the oil-gas separator (13) is connected to the inlet end of the pressure-maintaining outlet pipe (5).

2. The vehicle-mounted screw air compressor system according to claim 1, characterized in that: The cooler (3) includes an oil cooler and an air cooler.

3. The vehicle-mounted screw air compressor system according to claim 2, characterized in that: It also includes a heater (9) for heating the lubricating oil.

4. The vehicle-mounted screw air compressor system according to claim 3, characterized in that: The heater (9) is an electric heater.

5. The vehicle-mounted screw air compressor system according to claim 4, characterized in that: The system also includes a temperature sensor (11) for monitoring the lubricating oil temperature and controlling the opening and closing of the electric heater (9).

6. The vehicle-mounted screw air compressor system according to claim 5, characterized in that: The compressor body (15) is driven by a liquid-cooled DC motor (19).

7. The vehicle-mounted screw air compressor system according to claim 6, characterized in that: The liquid-cooled DC motor (19) is connected to the compressor body (15) via a splined shaft (30) and a coupling (26).

8. The vehicle-mounted screw air compressor system according to claim 7, characterized in that: It also includes a container housing (31), in which the compressor body (15), exhaust pipe (1), cooler (3), temperature-controlled oil filter seat (7), oil-gas separator (13), liquid-cooled DC motor (19) and heater (9) are installed.

9. The vehicle-mounted screw air compressor system according to claim 8, characterized in that: The bottom of the container shell (31) is equipped with a through-type longitudinal beam and a detachable fixing plate.

10. The vehicle-mounted screw air compressor system according to claim 9, characterized in that: The system also includes a vibration isolator (27) for mitigating vibrations of the liquid-cooled DC motor (19).

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