Low-noise open type air suspension compressor integrated with distribution valve

Abstract

The invention discloses a low-noise open type air suspension compressor integrated with a distribution valve, and relates to the technical field of compressors, the low-noise open type air suspension compressor comprises a shell, and a motor assembly, a compression cavity, the distribution valve, an air inlet and an air outlet are arranged in the shell; the output end of the motor assembly is connected with a compression mechanism, and the compression mechanism is located in the compression cavity. A renewable drying barrel is installed on the shell, and the air inlet is communicated with the compression cavity. Modular design is adopted in the compressor, a distribution valve, a motor assembly, a compression mechanism, a renewable drying barrel, an exhaust mechanical valve and an exhaust electromagnetic valve are integrated, the arrangement space and difficulty of an ASU chassis are reduced, and meanwhile the effects of space reduction and mass reduction are achieved; in order to solve the noise problem, the noise is reduced by additionally arranging the air inlet silencer and the exhaust silencer, and meanwhile the airflow flowing noise can be further reduced in a double-channel circulation mode.

Description

Technical Field

[0001] The invention relates to the technical field of compressors, and in particular to a low-noise open air suspension compressor with an integrated distribution valve. Background Art

[0002] Air suspension is widely used in chassis systems of new energy passenger cars and commercial vehicles to improve driving comfort and handling.

[0003] As the power unit of the whole system, the air compressor bears the core needs of chassis lifting and air tank energy storage. The traditional open compressor and distribution valve separation design not only increases the chassis boundary and installation complexity of the ASU system, but also requires the purchase of additional distribution valves, the development of acoustic packages, adapter harnesses and other components. The final air supply unit has a large layout space, heavy weight, and high design complexity. At the same time, the maintenance of the subsequent air supply unit is also quite troublesome. In addition, the existing open compressor has a high working noise. One of the main reasons is that when the chassis is lowered, the high-pressure gas circulates in a single channel in the compressor and is finally discharged from the air inlet. The high-pressure gas generates more than 90dB of airflow noise during the transportation process in the compressor. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that a distribution valve needs to be newly installed in a traditional open compressor and the noise is high, and to propose a low-noise open air suspension compressor with an integrated distribution valve.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A low-noise open air suspension compressor with an integrated distribution valve comprises a housing, wherein a motor assembly, a compression chamber, a distribution valve, an air inlet and an air outlet are arranged in the housing;

[0007] The output end of the motor assembly is connected to a compression mechanism, and the compression mechanism is located in the compression chamber;

[0008] A regenerable drying barrel is installed on the shell, the air inlet is connected to the compression chamber, the air outlet of the compression chamber is connected to the air inlet of the regenerable drying barrel, the air outlet of the regenerable drying barrel is connected to the air inlet of the exhaust port, and the air outlet of the exhaust port is connected to the air inlet of the distribution valve;

[0009] An air intake muffler is installed at the air outlet end of the regenerable drying barrel;

[0010] An exhaust muffler is installed on the exhaust port.

[0011] Preferably, the compression chamber includes the primary compression chamber and the secondary compression chamber.

[0012] Preferably, the compression mechanism comprises an eccentric shaft arranged at the output end of the motor assembly, and the eccentric shaft is connected to a leather cup via a connecting rod;

[0013] The primary compression chamber and the secondary compression chamber are respectively located below and above the compression mechanism.

[0014] Preferably, the regenerable drying barrel is arranged in a U-shape, with air inlet at one end and air outlet at the other end of the U-shaped regenerable drying barrel.

[0015] Preferably, an exhaust mechanical valve is also provided in the shell, and the exhaust mechanical valve has three ports, the first port of the exhaust mechanical valve is connected to the air supply pipeline between the compression chamber and the regenerable drying barrel, the second port is connected to the compression chamber, and the third port is connected to the air supply pipeline between the regenerable drying barrel and the exhaust port.

[0016] Preferably, an exhaust solenoid valve is also provided in the housing, and the exhaust solenoid valve is installed on the air inlet end of the third port of the exhaust mechanical valve.

[0017] Preferably, the exhaust solenoid valve comprises an exhaust solenoid valve inner cavity, the inner wall of the exhaust solenoid valve inner cavity is sealed and slidably provided with a sliding seat, and the sliding seat divides the exhaust solenoid valve inner cavity into a left cavity and a right cavity;

[0018] The sliding seat is communicated with the inner wall of the left cavity through an elastic member, and the other end of the sliding seat is connected to a movable valve plate.

[0019] Preferably, the first port and the second port of the exhaust mechanical valve are in communication, and the third port of the exhaust mechanical valve is in communication with the right chamber.

[0020] Preferably, the movable valve plate is installed on an air supply pipe connecting the first port and the second port of the exhaust mechanical valve.

[0021] Preferably, the air supply pipeline connecting the air inlet and the compression chamber is located outside the motor assembly.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The compressor of the present invention adopts a modular design, integrating the distribution valve, motor assembly, compression mechanism, renewable drying barrel, exhaust mechanical valve and exhaust solenoid valve into one, reducing the space and difficulty of ASU chassis layout, and having the effect of reducing space and weight.

[0024] In order to solve the noise problem, the present invention reduces the noise by adding an intake muffler and an exhaust muffler, and at the same time further reduces the air flow noise by a dual-channel circulation method. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of a low-noise open air suspension compressor with an integrated distribution valve proposed by the present invention;

[0026] Figure 2 This is an internal structure diagram of a low-noise open air suspension compressor with an integrated distribution valve proposed by the present invention;

[0027] Figure 3 A state diagram of a low-noise open air suspension compressor with an integrated distribution valve proposed by the present invention in the compressor intake process;

[0028] Figure 4 This is a state diagram of a low-noise open air suspension compressor with an integrated distribution valve proposed by the present invention in a pressure protection mode during the air intake process;

[0029] Figure 5 This is a state diagram of a low-noise open air suspension compressor with an integrated distribution valve proposed by the present invention in a rapid airflow discharge mode during the exhaust process.

[0030] In the figure: 1. Motor assembly; 2. Compression mechanism; 3. Renewable drying barrel; 4. Exhaust solenoid valve; 5. Distribution valve; 6. Exhaust mechanical valve; 7. Primary compression chamber; 8. Secondary compression chamber; 9. Air inlet; 10. Exhaust port; 11. Air inlet muffler; 12. Exhaust muffler. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] Reference Figure 1-Figure 5 A low-noise open air suspension compressor with an integrated distribution valve comprises a shell, in which a motor assembly 1, a compression chamber, a distribution valve 5, an air inlet 9 and an exhaust port 10 are arranged.

[0033] In some embodiments, the output end of the motor assembly 1 is connected to a compression mechanism 2, and the compression mechanism 2 is located in the compression chamber. The compression mechanism 2 includes an eccentric shaft arranged at the output end of the motor assembly 1, and the eccentric shaft is connected to a leather cup through a connecting rod.

[0034] The working process of the motor assembly 1 and the compression mechanism 2 is as follows: the motor assembly 1 drives the eccentric shaft to rotate, and further drives the leather cup to move up and down in the compression chamber through the connecting rod.

[0035] Reference Figure 2The compression chamber includes a primary compression chamber 7 and a secondary compression chamber 8. Further, the primary compression chamber 7 and the secondary compression chamber 8 are located below and above the compression mechanism 2, respectively.

[0036] A renewable drying barrel 3 is installed on the shell. The renewable drying barrel 3 is U-shaped. One end of the U-shaped renewable drying barrel 3 takes in air and the other end takes out air. The airflow enters from one end of the U-shaped renewable drying barrel 3 and flows out from the other end to absorb moisture in the airflow.

[0037] The air inlet 9 is in communication with the compression chamber, and an air pipeline that connects the air inlet 9 with the compression chamber is located outside the motor assembly 1 .

[0038] The air outlet end of the compression chamber is connected to the air inlet end of the regenerable drying barrel 3. Specifically, after the air flow flows into the cavity between the primary compression chamber and the secondary compression chamber, the air flow enters from the air inlet valve of the primary compression chamber and flows out from the air outlet valve of the primary compression chamber. The outflowing air flow flows to the air inlet valve of the secondary compression chamber through the flow channel in the compression chamber, and after passing through the secondary compression chamber, it flows out from the air outlet valve of the secondary compression chamber.

[0039] The air outlet end of the regenerable drying barrel 3 is connected to the air inlet end of the exhaust port 10 , and the airflow after drying is discharged from the exhaust port 10 .

[0040] In this embodiment, the air outlet end of the exhaust port 10 is connected to the air inlet end of the distribution valve 5, so that the air flow out of or in from the exhaust port 10 flows to the distribution valve 5, and further acts on the air spring or the air storage tank.

[0041] Based on the setting of the distribution valve 5, in order to ensure that the channels for the airflow inflow and outflow of the distribution valve 5 are concentrated in the outer shell, an exhaust mechanical valve 6 is also arranged in the shell. Based on the setting of the exhaust mechanical valve 6, it can be ensured that the integrated distribution valve 5 has a pressure protection mode during the intake process; in the exhaust process, it also has a dual-channel structural setting, so that the airflow in the air spring connected to the distribution valve 5 can be quickly discharged, and it also has the effect of reducing noise, avoiding concentrated discharge of airflow, and reducing the noise in airflow transportation by dispersing the airflow discharge.

[0042] In this embodiment, the exhaust mechanical valve 6 has three openings, which are respectively arranged as follows:

[0043] 1. The first port of the exhaust mechanical valve 6 is connected to the gas pipeline between the compression chamber and the regenerable drying barrel 3. For details, refer to Figure 3-Figure 5The first port of the exhaust mechanical valve 6 is a branch of the air supply pipeline between the compression chamber and the regenerable drying barrel 3, so that in the pressure protection mode during the intake process or the rapid airflow discharge mode during the exhaust process, specifically: in the pressure protection mode during the intake process, the airflow flows from the compression chamber to the regenerable drying barrel 3, and is diverted to the exhaust mechanical valve 6, and then re-enters the compression chamber, thereby reducing the airflow pressure discharged from the exhaust port 10; in the rapid airflow discharge mode during the exhaust process, the airflow flows from the regenerable drying barrel 3 to the compression chamber, and is diverted to the exhaust mechanical valve 6, thereby flowing from the channel of the exhaust mechanical valve 6 to the compression chamber, which can speed up the exhaust process, and adopts a channel for exhausting the airflow in addition to the secondary compression chamber, which can also reduce the noise during the flow of the airflow.

[0044] 2. The second port is connected to the compression chamber. Based on the setting of the first port and the setting of the second port, the use process in the pressure protection mode during intake or the rapid airflow discharge mode during exhaust is as follows: in the pressure protection mode during intake, the airflow flows from the compression chamber to the regenerable drying barrel 3, and is diverted to the exhaust mechanical valve 6, and then enters the compression chamber through the second port; in the rapid airflow discharge mode during exhaust, the airflow flows from the regenerable drying barrel 3 to the compression chamber, and is diverted to the exhaust mechanical valve 6, and then flows to the compression chamber through the second port.

[0045] 3. The third port is connected to the gas supply pipeline between the renewable drying barrel 3 and the exhaust port 10. Furthermore, an exhaust solenoid valve 4 is provided in the shell. The exhaust solenoid valve 4 is installed on the air inlet end of the third port of the exhaust mechanical valve 6. The exhaust solenoid valve 4 is used in a fast airflow discharge mode during the exhaust process. In this mode, the exhaust solenoid valve 4 is opened. When the airflow discharged from the air spring flows from the exhaust port 10 to the renewable drying barrel 3, the airflow is diverted to the exhaust mechanical valve 6 through the opened exhaust solenoid valve 4, thereby entering the compression chamber through the second port, thereby realizing the formation of a second channel during the exhaust process, thereby accelerating the exhaust speed and reducing noise.

[0046] In some embodiments, the exhaust solenoid valve 4 includes an exhaust solenoid valve inner cavity, and a sliding seat is sealed and slidably provided on the inner wall of the exhaust solenoid valve inner cavity, and the sliding seat divides the exhaust solenoid valve inner cavity into a left cavity and a right cavity.

[0047] It should be added that: based on the requirements of the pressure protection mode during the intake process and the rapid airflow discharge mode during the exhaust process, the first port and the second port of the exhaust mechanical valve 6 are connected.

[0048] The slide is connected to the inner wall of the left cavity through an elastic member, wherein the elastic member is preferably a spring, but is not limited to a spring. Any elastic structure that can move the slide and then reset is acceptable. The other end of the slide is connected to a movable valve plate. It should be noted that the movable valve plate is installed on the air pipe that connects the first port and the second port of the exhaust mechanical valve 6.

[0049] It should be added that: based on the rapid airflow discharge mode during the exhaust process and the setting of the movable valve plate, the third port of the exhaust mechanical valve 6 is connected to the right chamber. Specifically, in the rapid airflow discharge mode during the exhaust process, the airflow flowing from the third port to the right chamber pushes the sliding seat to compress the elastic part, thereby causing the movable valve plate to be opened, causing the first port and the second port to be interconnected, thereby realizing the exhaust mechanical valve 6 to divert the exhaust process, speed up the exhaust speed and reduce noise.

[0050] To further reduce noise, an air intake muffler 11 is installed on the air outlet end of the regenerable drying barrel 3 ; in addition, an exhaust muffler 12 is installed on the exhaust port 10 .

[0051] The present invention can explain its functional principle through the following operation mode:

[0052] The compressor intake process is as follows:

[0053] Reference Figure 3 The motor assembly 1 drives the eccentric shaft in the compression mechanism 2 to perform periodic rotational motion. As the eccentric shaft swings upward, the connecting rod drives the leather cup to move upward, and negative pressure is generated in the first-stage compression chamber 7. The intake valve of the first-stage compression chamber 7 is opened, and the compressor is operated according to Figure 3 Inhale air. As the eccentric shaft moves downward, when the gas in the primary compression chamber 7 is compressed to the set value, the high-pressure gas pushes open the outlet valve of the primary compression chamber 7 and enters the inner wall channel between the primary compression chamber 7 and the secondary compression chamber 8, where the high-temperature gas will be cooled to a certain extent to achieve inter-stage cooling, and the airflow pushes open the intake valve of the secondary compression chamber 8. Then the eccentric shaft moves upward to continue compressing the gas in the secondary compression chamber 8, and after reaching the set pressure, it pushes open the exhaust valve of the secondary compression chamber 8 and enters the drying barrel. After the gas is dried, it enters the intake silencer element, and finally enters the gas storage tank or air spring through the exhaust port 10 and the distribution valve.

[0054] The pressure protection mode during air intake is as follows:

[0055] During the compressor intake process, refer to Figure 4If the controller does not shut down the compressor power supply in time, after a certain pressure, the air spring and energy storage device may be damaged. During the process of airflow transferring from the secondary compression chamber 8 to the regenerable drying barrel 3, part of the airflow enters from the first port of the exhaust mechanical valve 6, and under the action of the high-pressure airflow, the movable valve plate is opened, so that the first port and the second port are connected, and then part of the airflow flows back from the second port to the compression chamber, thereby achieving pressure relief and protecting the safety of the air suspension system.

[0056] The rapid exhaust mode of airflow during exhaust is as follows:

[0057] When the chassis needs to be lowered or forced to exhaust, the user energizes the exhaust solenoid valve 4, and the exhaust solenoid valve 4 is opened. Figure 5 The airflow discharged from the exhaust port 10 enters the exhaust mechanical valve 6 from the third port of the opened exhaust solenoid valve 4, and the airflow flowing into the third port enters the right cavity of the exhaust mechanical valve 6, pushing the slide seat. The movement of the slide seat opens the movable valve plate, so that the first port and the second port are connected; further, the airflow flows from the renewable drying barrel 3 to the compression chamber, and is diverted to the exhaust mechanical valve 6, thereby flowing from the channel of the exhaust mechanical valve 6 to the compression chamber, which can speed up the exhaust process, and adopts a channel for exhausting the airflow except for the secondary compression chamber, which can also reduce the noise during the flow of the airflow.

[0058] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A low-noise open air suspension compressor with an integrated distribution valve, comprising a housing, characterized in that: The housing is provided with a motor assembly (1), a compression chamber, a distribution valve (5), an air inlet (9) and an air outlet (10); The output end of the motor assembly (1) is connected to a compression mechanism (2), and the compression mechanism (2) is located in the compression chamber; A regenerable drying barrel (3) is mounted on the shell, the air inlet (9) is connected to the compression chamber, the air outlet of the compression chamber is connected to the air inlet of the regenerable drying barrel (3), the air outlet of the regenerable drying barrel (3) is connected to the air inlet of the exhaust port (10), and the air outlet of the exhaust port (10) is connected to the air inlet of the distribution valve (5); An air intake muffler (11) is installed on the air outlet end of the regenerable drying barrel (3); An exhaust muffler (12) is installed on the exhaust port (10).

2. A low-noise open air suspension compressor with integrated distribution valve according to claim 1, characterized in that: The compression chamber comprises a primary compression chamber (7) and a secondary compression chamber (8).

3. A low-noise open air suspension compressor with integrated distribution valve according to claim 2, characterized in that: The compression mechanism (2) comprises an eccentric shaft arranged at the output end of the motor assembly (1), and the eccentric shaft is connected to a leather cup via a connecting rod; The primary compression chamber (7) and the secondary compression chamber (8) are respectively located below and above the compression mechanism (2).

4. A low-noise open air suspension compressor with integrated distribution valve according to claim 1, characterized in that: The regenerable drying barrel (3) is arranged in a U-shape, with air inlet at one end and air outlet at the other end of the U-shaped regenerable drying barrel (3).

5. A low-noise open air suspension compressor with integrated distribution valve according to claim 1, characterized in that: An exhaust mechanical valve (6) is also provided in the shell, and the exhaust mechanical valve (6) has three openings. The first opening of the exhaust mechanical valve (6) is connected to the air supply pipeline between the compression chamber and the regenerable drying barrel (3), the second opening is connected to the compression chamber, and the third opening is connected to the air supply pipeline between the regenerable drying barrel (3) and the exhaust port (10).

6. A low-noise open air suspension compressor with integrated distribution valve according to claim 5, characterized in that: An exhaust solenoid valve (4) is also provided in the housing, and the exhaust solenoid valve (4) is mounted on the air inlet end of the third port of the exhaust mechanical valve (6).

7. A low-noise open air suspension compressor with integrated distribution valve according to claim 6, characterized in that: The exhaust solenoid valve (4) comprises an exhaust solenoid valve inner cavity, the inner wall of the exhaust solenoid valve inner cavity is sealed and slidably provided with a sliding seat, and the sliding seat divides the exhaust solenoid valve inner cavity into a left cavity and a right cavity; The sliding seat is communicated with the inner wall of the left cavity through an elastic member, and the other end of the sliding seat is connected to a movable valve plate.

8. A low-noise open air suspension compressor with integrated distribution valve according to claim 7, characterized in that: The first port and the second port of the exhaust mechanical valve (6) are in communication, and the third port of the exhaust mechanical valve (6) is in communication with the right chamber.

9. A low-noise open air suspension compressor with integrated distribution valve according to claim 8, characterized in that: The movable valve plate is installed on an air delivery pipe which is connected to the first opening and the second opening of the exhaust mechanical valve (6).

10. The low-noise open air suspension compressor with integrated distribution valve according to claim 1, characterized in that: The air supply pipeline connecting the air inlet (9) and the compression chamber is located outside the motor assembly (1).

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