Air supply unit, air suspension and vehicle

Abstract

The utility model relates to the technical field of air suspensions, in particular to an air supply unit, an air suspension and a vehicle, the air supply unit comprises a compressor, a first valve, a second valve, a third valve and a fourth valve, the compressor is provided with an air inlet end and an air outlet end, and one end of the first valve is directly communicated with the air outlet end; one end of the first valve is communicated with the air inlet end, the other end of the second valve is communicated with the air spring, one end of the third valve is communicated with the air inlet end, the other end of the third valve is communicated with the air storage unit, and one end of the fourth valve is directly communicated with the air outlet end. According to the air supply unit provided by the embodiment of the utility model, the response speed of the air supply unit can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air suspensions, in particular to an air supply unit, an air suspension and a vehicle. Background Art

[0002] The air suspension adjusts the ground clearance of the vehicle by compressing and extending the air spring, providing good comfort for the vehicle under various road conditions. The air supply unit is the main component of the air suspension. The air supply unit compresses the air and fills it into the air spring. The air supply unit provides the source power for the air suspension. When the air supply unit in the related art supplies air, the high-pressure gas needs to pass through the air dryer and the throttle check valve to enter the air spring. However, the air dryer and the throttle check valve consume the energy of the gas, resulting in a slow response speed of the air supply unit. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the utility model provides an air supply unit, which can improve the response speed of the air supply unit.

[0004] The embodiment of the utility model also provides an air suspension.

[0005] The embodiment of the utility model also provides a vehicle.

[0006] The air supply unit of an embodiment of the utility model includes: a compressor, which has an air inlet end and an air outlet end; a first valve, one end of the first valve is directly connected to the air outlet end, and the other end of the first valve is suitable for connecting to an air spring; a second valve, one end of the second valve is connected to the air inlet end, and the other end of the second valve is connected to the air spring; a third valve, one end of the third valve is connected to the air inlet end, and the other end of the third valve is suitable for connecting to an air storage unit; and a fourth valve, one end of the fourth valve is directly connected to the air outlet end, and the other end of the fourth valve is connected to the air storage unit.

[0007] The air supply unit of the embodiment of the utility model can improve the response speed of the air supply unit.

[0008] In some embodiments, the air supply unit further includes an air filter, one end of the air filter is connected to the air outlet, and the other end of the air filter is connected to the fourth valve.

[0009] In some embodiments, the air supply unit further includes a waterproof breathable membrane installed on an air inlet passage of the air filter to block moisture in the air.

[0010] In some embodiments, the air supply unit further includes a plurality of air valves, the number of the air springs is multiple, the plurality of air valves are connected to the plurality of air springs in a one-to-one correspondence, and each of the air valves is respectively connected to the first valve and the second valve.

[0011] In some embodiments, the air supply unit has an air supply state and an exhaust state. In the air supply state, the first valve and the third valve are connected to the air path, and the second valve and the fourth valve interrupt the air path, so that the air outlet of the compressor is connected to the first valve and the air valve; in the exhaust state, the second valve and the fourth valve are connected to the air path, and the first valve and the third valve interrupt the air path, so that the air outlet of the compressor is connected to the fourth valve and the air storage unit.

[0012] In some embodiments, the air supply unit also has an air replenishing state. In the air replenishing state, the fourth valve connects the air path, and the first valve, the second valve and the third valve interrupt the air path to connect the outside air, the compressor, the air filter, the waterproof breathable membrane, the third valve and the air storage unit.

[0013] In some embodiments, the air supply unit further includes a valve block, in which the compressor, the first valve, the second valve, the third valve, the fourth valve and the air valve are integrated, and the valve block has an air flow channel so that the air supply unit can switch between the air supply state, the exhaust state and the air replenishment state.

[0014] In some embodiments, the air filter is integrated on the valve block, or the air filter is connected to the valve block through a pipeline.

[0015] The air suspension of the embodiment of the utility model includes: an air supply unit, which is the air supply unit described in the above embodiment; an air storage unit, which is respectively connected to the third valve and the fourth valve; and an air spring, which is respectively connected to the first valve and the second valve.

[0016] The air suspension of the embodiment of the utility model can improve the response speed of the air suspension.

[0017] The vehicle of the embodiment of the utility model includes an air suspension, a body and wheels. The air suspension is the air suspension described in the above embodiment, one end of the air suspension is connected to the wheel, and the other end of the air suspension is connected to the body. The air suspension is used to adjust the height of the body.

[0018] The vehicle according to the embodiment of the utility model can improve the response speed of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of an air supply unit according to an embodiment of the present utility model.

[0020] Figure 2 It is a schematic diagram of the air supply unit of the embodiment of the utility model.

[0021] Reference numerals:

[0022] Air spring 100, air storage unit 200,

[0023] Compressor 1, plunger pump 11, motor 12, one-way valve assembly 13, first one-way valve 131, second one-way valve 132,

[0024] The first valve 21, the second valve 22, the third valve 23, the fourth valve 24,

[0025] Air filter 3, air valve 4,

[0026] Exhaust valve 5, power limiting valve 6, manual exhaust bolt 7, pressure sensor 8,

[0027] Valve block 91 , electronic control unit 92 , valve group 93 , air nozzle 94 . DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0029] The air supply unit of the embodiment of the utility model includes a compressor 1, a first valve 21, a second valve 22, a third valve 23 and a fourth valve 24. The compressor 1 has an air inlet end and an air outlet end. One end of the first valve 21 is directly connected to the air outlet end, and the other end of the first valve 21 is suitable for being connected to the air spring 100. One end of the second valve 22 is connected to the air inlet end, and the other end of the second valve 22 is connected to the air spring 100. One end of the third valve 23 is connected to the air inlet end, and the other end of the third valve 23 is suitable for being connected to the air storage unit 200. One end of the fourth valve 24 is directly connected to the air outlet end, and the other end of the fourth valve 24 is connected to the air storage unit 200.

[0030] Specifically, Figure 1 and Figure 2As shown, the compressor 1 includes a plunger pump 11 and a motor 12, and the motor 12 is connected to the plunger pump 11 to drive the plunger pump 11 to move. The compressor 1 also includes a one-way valve assembly 13, and the one-way valve assembly 13 includes a first one-way valve 131 and a second one-way valve 132. The first one-way valve 131 is connected to the inlet of the plunger pump 11, and the second one-way valve 132 is connected to the outlet of the plunger pump 11 to prevent the gas from flowing in reverse and ensure the normal one-way flow of the gas.

[0031] It should be noted that the first valve 21, the second valve 22, the third valve 23 and the fourth valve 24 are normally closed valves. The inlet of the first valve 21 is directly connected to the second one-way valve 132 at the outlet end of the compressor 1, and the outlet of the first valve 21 is connected to the air spring 100. When the first valve 21 is opened, the first valve 21 can fill the gas compressed by the compressor 1 into the air spring 100, and the air spring 100 rises after being inflated. The inlet of the second valve 22 is connected to the air spring 100, and the outlet of the second valve 22 is connected to the first one-way valve 131 at the inlet end of the compressor 1. When the second valve 22 is opened, the second valve 22 can transfer the gas in the air spring 100 to the compressor 1, and the height of the air spring 100 decreases after being deflated. The inlet of the third valve 23 is connected to the gas storage unit 200, and the outlet of the third valve 23 is connected to the first one-way valve 131 at the inlet end of the compressor 1. When the third valve 23 is opened, the third valve 23 can transfer the gas in the gas storage unit 200 to the compressor 1 for compression. The inlet of the fourth valve 24 is directly connected to the second one-way valve 132 at the outlet of the compressor 1, and the outlet of the fourth valve 24 is connected to the gas storage unit 200. When the fourth valve 24 is opened, the fourth valve 24 can recycle the gas in the compressor 1 into the gas storage unit 200 for storage.

[0032] For example, the number of plunger pumps 11 is two, three or four, the number of one-way valve assemblies 13 is also multiple, and the multiple plunger pumps 11 are arranged in a one-to-one correspondence with the multiple one-way valve assemblies 13, that is, a first one-way valve 131 and a second one-way valve 132 are respectively provided at both ends of each plunger pump 11. When the number of plunger pumps 11 is two, the two plunger pumps 11 are arranged symmetrically. When the number of plunger pumps 11 is three, the three plunger pumps 11 are arranged in a Y shape. When the number of plunger pumps 11 is four, the four plunger pumps 11 are arranged in a cross shape.

[0033] For example, the first valve 21 , the second valve 22 , the third valve 23 , and the fourth valve 24 are switching valves.

[0034] Compared with the related art in which the gas transmitted from the air outlet of the compressor 1 needs to pass through the air dryer and the throttling check valve before being transmitted to the air spring 100 or the air storage unit 200, in this embodiment, the air outlet of the compressor 1 is directly connected to the inlet of the first valve 21 and the fourth valve 24, and the air dryer and the throttling check valve are eliminated, so that the gas transmitted from the air outlet of the compressor 1 can be directly transmitted to the air spring 100 or the air storage unit 200, thereby avoiding the energy loss of the gas output by the compressor 1 due to the air dryer and the throttling check valve, and improving the response speed of the air supply unit.

[0035] Furthermore, since the air supply unit of this embodiment eliminates the air dryer and the throttling check valve, the integration of the air supply unit is improved, the assembly complexity is reduced, the cycle time of the production line is improved, and the cost of the air supply unit is reduced.

[0036] In some embodiments, the air supply unit further includes an air filter 3 , one end of the air filter 3 is connected to the air outlet, and the other end of the air filter 3 is connected to the fourth valve 24 .

[0037] Specifically, Figure 1 and Figure 2 As shown, one end of the air filter 3 is connected to the second one-way valve 132 at the air outlet of the compressor 1, and the other end of the air filter 3 is connected to the inlet of the fourth valve 24. The setting of the air filter 3 is convenient for filtering the gas entering the air supply unit from the outside, achieving air purification and improving the safety of the air supply unit.

[0038] In some embodiments, the air supply unit further includes a waterproof breathable membrane, which is installed on the air inlet passage of the air filter 3 to block moisture in the air.

[0039] The air supply unit of this embodiment blocks the moisture in the gas entering the air supply unit from the outside by installing a waterproof and breathable membrane in the air filter 3. By installing the waterproof and breathable membrane on the air filter 3, it is convenient to block impurities while suppressing the entry of water vapor into the interior of the air supply unit, thereby achieving gas drying inside the integrated air supply unit and ensuring the normal use of the air supply unit.

[0040] In some embodiments, the air supply unit further includes multiple air valves 4 , the number of air springs 100 is multiple, the multiple air valves 4 are connected to the multiple air springs 100 one by one, and each air valve 4 is connected to the first valve 21 and the second valve 22 respectively.

[0041] Specifically, Figure 2As shown, an air spring 100 can be provided at each wheel of the vehicle in this embodiment, and accordingly, the number of air valves 4 is four, the number of air springs 100 is four, the four air valves 4 are arranged in a one-to-one correspondence with the four air springs 100, each air valve 4 controls an air spring 100, and each air valve 4 is connected to the outlet of the first valve 21 and the inlet of the second valve 22, so that when at least one of the four air springs 100 needs to be inflated, the air valve 4 corresponding to the air spring 100 is opened, the first valve 21 directly receives the gas transmitted by the compressor 1 and inflates the air spring 100 with the gas through the air valve 4, and when at least one of the four air springs 100 needs to be deflated, the air valve 4 corresponding to the air spring 100 is opened, and the gas released by the air spring 100 is transmitted to the second valve 22 through the air valve 4.

[0042] Furthermore, in this embodiment, by adjusting the on-off states of the first valve 21, the second valve 22, the third valve 23, and the fourth valve 24 and the on-off states of the multiple air valves 4, it is convenient to adjust the heights of the multiple air springs 100 separately, so that the adjustment of the multiple air springs 100 is independent of each other, thereby realizing inflation and deflation of different air springs 100.

[0043] Optionally, the air supply unit further includes an exhaust valve 5, a power limiting valve 6, a manual exhaust bolt 7, and a pressure sensor 8. The pressure sensor 8 is arranged between the switching valve and the air valve 4, and can be used to monitor the gas pressure and temperature inside the air supply unit, the air spring 100, and the air storage unit 200 through different on-off modes of the switching valve and the air valve 4. The manual exhaust bolt 7 is used to discharge the high-pressure gas inside the air supply unit under special working conditions. The power limiting valve 6 is used to prevent overpressure of the air supply unit. The exhaust valve 5 is used to discharge the gas inside the air supply unit.

[0044] For example, the pressure sensor 8 is a temperature and pressure sensor that can monitor temperature and pressure simultaneously.

[0045] In some embodiments, the air supply unit has an air supply state and an exhaust state. In the air supply state, the first valve 21 and the third valve 23 are connected to the air path, and the second valve 22 and the fourth valve 24 interrupt the air path, so that the air outlet end of the compressor 1 is connected to the first valve 21 and the air valve 4; in the exhaust state, the second valve 22 and the fourth valve 24 are connected to the air path, and the first valve 21 and the third valve 23 interrupt the air path, so that the air outlet end of the compressor 1 is connected to the fourth valve 24 and the air storage unit 200.

[0046] Specifically, Figure 2As shown, when the air supply unit receives a signal to raise the height of the air spring 100, the air supply unit is in an air supply state, the first valve 21 and the third valve 23 are connected to the air circuit, the second valve 22 and the fourth valve 24 interrupt the air circuit, and the air valve 4 is partially or fully energized as needed, and the gas in the air storage unit 200 flows to the first one-way valve 131 at the inlet of the plunger pump 11 through the third valve 23, and the plunger pump 11 is driven by the motor 12 to transmit the gas to the second one-way valve 132 at the outlet of the plunger pump 11, and then directly filled into the air spring 100 through the first valve 21 and the air valve 4.

[0047] When the air supply unit receives a signal to lower the height of the air spring 100, the air supply unit is in an exhaust state, the second valve 22 and the fourth valve 24 are connected to the air circuit, the first valve 21 and the third valve 23 interrupt the air circuit, and the air valve 4 is partially or fully energized as needed. The gas released by the air spring 100 enters the first one-way valve 131 at the inlet of the plunger pump 11 through the air valve 4 and the second valve 22, and the plunger pump 11 is driven by the motor 12 to transmit the gas to the second one-way valve 132 at the outlet of the plunger pump 11, and then directly transmitted to the air storage unit 200 through the fourth valve 24.

[0048] In some embodiments, the air supply unit also has an air replenishing state. In the air replenishing state, the fourth valve 24 connects the air path, and the first valve 21, the second valve 22 and the third valve 23 interrupt the air path to connect the outside air, the compressor 1, the air filter 3, the waterproof breathable membrane, the third valve 23 and the air storage unit 200.

[0049] Specifically, when the air supply unit receives insufficient gas in the air storage unit 200, the fourth valve 24 connects the gas path, the first valve 21, the second valve 22 and the third valve 23 interrupt the gas path, the motor 12 drives the plunger pump 11 to move, and the outside air is sucked into the air filter 3, and the gas passing through the air filter 3 and the waterproof breathable membrane is replenished into the air storage unit 200 through the fourth valve 24. The air supply unit in this embodiment switches between the air supply state, the exhaust state and the air replenishment state, which realizes the adjustment of different heights of the air spring 100 and improves the response speed of the air supply unit.

[0050] In some embodiments, the air supply unit further includes a valve block 91, in which the compressor 1, the first valve 21, the second valve 22, the third valve 23, the fourth valve 24 and the air valve 4 are integrated, and the valve block 91 has an air flow channel so that the air supply unit can switch between an air supply state, an exhaust state and an air replenishment state.

[0051] Specifically, Figure 1As shown, the plunger pump 11 is arranged in the valve block 91 and driven by a motor 12 installed in the valve block 91 to achieve pumping in and out of gas.

[0052] The air supply unit also includes a valve group 93 and an electronic control unit 92. The valve group 93 includes the first valve 21, the second valve 22, the third valve 23, the fourth valve 24, the air valve 4 and the exhaust valve 5 of the above-mentioned embodiment. The valve group 93 controls the on-off state through the electronic control unit 92 to realize the on-off of each air flow channel to switch between the air supply state, the exhaust state and the air replenishment state.

[0053] Optionally, an air nozzle 94 is provided on the valve block 91 to facilitate the connection between the air supply unit and the air spring 100 and the air storage unit 200. The air nozzle 94 is arranged on the same side as the motor 12 to achieve reasonable use of the position of the valve block 91 and facilitate subsequent assembly and maintenance.

[0054] For example, the valve block 91 is made of aluminum, which facilitates rapid dissipation of heat generated during the movement of the plunger pump 11 .

[0055] In some embodiments, the air filter 3 is integrated on the valve block 91, or the air filter 3 is connected to the valve block 91 through a pipeline.

[0056] Specifically, the air filter 3 can be directly fixed on the valve block 91 to improve the degree of integration. The air filter 3 can also be connected to the valve block 91 through a pipeline to facilitate the installation of the air supply unit.

[0057] The air suspension of the embodiment of the utility model comprises an air supply unit, an air storage unit 200 and an air spring 100. The air supply unit is the air supply unit of the above embodiment. The air storage unit 200 is connected to the third valve 23 and the fourth valve 24 respectively. The air spring 100 is connected to the first valve 21 and the second valve 22 respectively.

[0058] Specifically, the air storage unit 200 is used to store high-pressure gas, and the air supply unit is used to adjust the height of the air spring 100. Since the air supply unit of this embodiment eliminates the air dryer and the throttling check valve, the capacity loss of the compressor 1 output gas and its throttling effect can be reduced, and the response speed of the air supply unit to the air spring 100 can be improved.

[0059] The vehicle of the embodiment of the utility model includes an air suspension, a body and a vehicle. The air suspension is the air suspension of the above embodiment. One end of the air suspension is connected to the wheel, and the other end of the air suspension is connected to the body. The air suspension is used to adjust the height of the body.

[0060] The vehicle of this embodiment may be a hybrid vehicle, a non-hybrid vehicle, an electric vehicle, a fuel cell vehicle or other types of vehicles. Since the vehicle of this embodiment has the air suspension of the above-mentioned embodiment, the performance of the vehicle may be improved.

[0061] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0062] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0063] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0065] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0066] It is understandable that the above embodiments are exemplary and cannot be construed as limiting the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An air supply unit, characterized in that: include: A compressor having an air inlet end and an air outlet end; a first valve, one end of which is directly connected to the air outlet, and the other end of which is suitable for connecting to the air spring; a second valve, one end of the second valve being communicated with the air inlet end, and the other end of the second valve being communicated with the air spring; a third valve, one end of which is connected to the air inlet end, and the other end of which is suitable for connecting to the air storage unit; and A fourth valve, one end of the fourth valve is directly connected to the gas outlet, and the other end of the fourth valve is connected to the gas storage unit.

2. The air supply unit according to claim 1, characterized in that It also includes an air filter, one end of which is connected to the air outlet, and the other end of which is connected to the fourth valve.

3. The air supply unit according to claim 2, characterized in that A waterproof breathable membrane is also included, and the waterproof breathable membrane is installed on the air inlet channel of the air filter to block moisture in the air.

4. The air supply unit according to claim 3, characterized in that It also includes a plurality of air valves. The number of the air springs is multiple. The multiple air valves are connected to the multiple air springs in a one-to-one correspondence, and each of the air valves is connected to the first valve and the second valve respectively.

5. The air supply unit according to claim 4, characterized in that The air supply unit has an air supply state and an air exhaust state. In the air supply state, the first valve and the third valve are connected to the air path, and the second valve and the fourth valve interrupt the air path, so that the air outlet of the compressor is connected to the first valve and the air valve; in the air exhaust state, the second valve and the fourth valve are connected to the air path, and the first valve and the third valve interrupt the air path, so that the air outlet of the compressor is connected to the fourth valve and the air storage unit.

6. The air supply unit according to claim 5, characterized in that The air supply unit also has an air replenishing state. In the air replenishing state, the fourth valve connects the air path, and the first valve, the second valve and the third valve interrupt the air path to connect the outside air, the compressor, the air filter, the waterproof breathable membrane, the third valve and the air storage unit.

7. The air supply unit according to claim 6, characterized in that It also includes a valve block, in which the compressor, the first valve, the second valve, the third valve, the fourth valve and the air valve are integrated, and the valve block has an air flow channel so that the air supply unit can switch between the air supply state, the exhaust state and the air supplement state.

8. The air supply unit according to claim 7, characterized in that The air filter is integrated on the valve block, or the air filter is connected to the valve block through a pipeline.

9. An air suspension, characterized in that: include: An air supply unit, wherein the air supply unit is the air supply unit according to any one of claims 1 to 8; An air storage unit, wherein the air storage unit is connected to the third valve and the fourth valve respectively; An air spring is connected to the first valve and the second valve respectively.

10. A vehicle, characterized in that: include: An air suspension, wherein the air suspension is the air suspension according to claim 9; A vehicle body and a wheel, one end of the air suspension is connected to the wheel, and the other end of the air suspension is connected to the vehicle body, and the air suspension is used to adjust the height of the vehicle body.

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