Active separator and vehicle

Abstract

The present application provides an active separator and a vehicle. The active separator includes a main housing and a plurality of separation devices. The plurality of separation devices are disposed within the main housing. The main housing includes a total air inlet, a total exhaust port, and a total liquid discharge port that are respectively in communication with the separation devices. The total air inlet is used to receive a gas-liquid mixture, the separation devices are used to separate the gas-liquid mixture, the total exhaust port is used to discharge the separated gas, and the total liquid discharge port is used to discharge the separated liquid. At least two separation devices are connected in series or in parallel. The plurality of separation devices are connected in a multi-stage series, parallel, or series-parallel hybrid connection, which can improve the separation efficiency and separation effect of the active separator.

Description

Technical Field

[0001] This application relates to the field of gas-liquid separation in power systems, and particularly to an active separator and a vehicle. Background Art

[0002] Domestic automobile emission regulations are becoming increasingly strict. In the current emission regulations, it is stipulated that the gas escaping from the engine crankcase cannot be directly discharged into the atmosphere. Some engines adopt an open crankcase system. The crankcase blow-by gas contains engine oil mist, which is discharged into the atmosphere after the engine oil particles are separated by an oil-gas separator. Most of the oil-gas separators widely used in the market rely on negative pressure to make the gas and liquid move, and during the movement, separation is carried out by means of a labyrinth, a baffle, or an impact felt, etc. However, the separation efficiency and separation effect of the oil-gas separator cannot be guaranteed. Summary of the Invention

[0003] This application provides an active separator and a vehicle to solve at least some of the problems in the related art.

[0004] In a first aspect, this application provides an active separator, which includes:

[0005] A main housing;

[0006] A plurality of separation devices are arranged in the main housing. The main housing includes a total air inlet, a total exhaust port, and a total liquid discharge port that are respectively communicated with the separation devices. The total air inlet is used to receive the gas-liquid mixture, the separation device is used to separate the gas-liquid mixture, the total exhaust port is used to discharge the separated gas, and the total liquid discharge port is used to discharge the separated liquid; at least two separation devices are connected in series or in parallel.

[0007] Optionally, the separation device includes a separation medium, an inner shell of the separation device, and an outer shell of the separation device. The separation medium is located between the outer shell and the inner shell of the separation device. The inner shell of the separation device includes a separation air inlet, and the separation air inlet is communicated with the separation medium. The separation medium is used to adsorb the liquid in the gas-liquid mixture entering from the separation air inlet. A separation outlet is provided at the bottom of the outer shell of the separation device for discharging the separated liquid and gas.

[0008] Optionally, the separation air inlet includes a first air inlet and a second air inlet. A plurality of second air inlets are provided on the side wall of the inner shell of the separation device. The separation device includes a pressure valve and an elastic member. The pressure valve is arranged at the bottom of the inner shell of the separation device. One end of the elastic member is fixed to the inner top wall of the inner shell of the separation device, and the other end of the elastic member is connected to the pressure valve. The pressure valve can move relative to the inner shell of the separation device. The pressure valve is used to block or open the second air inlet. When the pressure of the gas-liquid mixture received by the pressure valve exceeds the lower threshold, the pressure valve moves relative to the inner shell of the separation device, driving the elastic member to elastically deform and opening at least some of the second air inlets; the first air inlet is located below the second air inlet and the pressure valve.

[0009] Optionally, at least part of the second air inlets are arranged vertically. The pressure valve includes an abutting portion and a shielding portion connected to the abutting portion. The abutting portion is connected to the elastic member. The shielding portion extends vertically along the side wall of the inner shell of the separation device. The shielding portion can move vertically relative to the side wall of the inner shell of the separation device to shield or open the second air inlets.

[0010] Optionally, the multiple separation devices include a first separation device and a second separation device. The first separation device and the second separation device are connected in series. The first separation device is located below the second separation device. The active separator includes a sub-housing, and the sub-housing is located inside the main housing. The first separation device is located inside the sub-housing, and the second separation device is located outside the sub-housing;

[0011] The separation device includes a separation air inlet and a separation outlet. The separation outlet is used to discharge the separated liquid and gas; an upper opening is provided in the upper part of the sub-housing, and a lower opening is provided in the lower part of the sub-housing. The upper opening is communicated with the separation air inlet of the second separation device, and the lower opening is communicated with the separation outlet of the first separation device and is also communicated with the total liquid discharge port. The lower opening is used to discharge the liquid separated by the first separation device.

[0012] Optionally, a first liquid discharge channel is provided between the sub-housing and the main housing. The first liquid discharge channel communicates the separation outlet of the second separation device and the total liquid discharge port.

[0013] Optionally, the active separator further includes a pre-separation device. The pre-separation device and the first separation device are connected in series. The pre-separation device is located below the first separation device and is located inside the sub-housing. The pre-separation device is used to pre-separate the gas-liquid mixture, and the multiple separation devices are used to perform gas-liquid separation on the pre-separated gas-liquid mixture;

[0014] A second liquid discharge channel is provided between the pre-separation device and the sub-housing. The second liquid discharge channel communicates the separation outlet of the first separation device and the total liquid discharge port.

[0015] Optionally, at least two separation devices are connected in parallel. The separation device includes a separation air inlet and a separation outlet. The separation outlet is used to discharge the separated liquid and gas;

[0016] The active separator includes an air inlet housing. The air inlet housing includes a plurality of air inlet pipelines. The air inlet pipelines include a pipeline inlet and a pipeline outlet. The pipeline outlets of the plurality of air inlet pipelines correspondingly communicate with the separation air inlets of at least two separation devices, and the pipeline outlets of the plurality of air inlet pipelines are all communicated with the total air inlet.

[0017] Optionally, a third liquid discharge channel is provided between the air inlet housing and the main housing. The third liquid discharge channel communicates the separation outlet and the total liquid discharge port.

[0018] Optionally, the active separator further includes a pre-separation device. The pre-separation device and at least two separation devices are connected in series through an air intake housing. The pre-separation device is located below the air intake housing and is used for pre-separating the gas-liquid mixture, and the separation device is used for gas-liquid separation of the pre-separated gas-liquid mixture;

[0019] A fourth liquid discharge channel is provided between the pre-separation device and the main housing. The fourth liquid discharge channel communicates with the separation outlets of at least two separation devices and the total liquid discharge port.

[0020] In a second aspect, the present application provides a vehicle, which includes an engine crankcase and an active separator as described in any of the above embodiments, and is connected to the engine crankcase.

[0021] The active separator provided by the present application includes a main housing and a plurality of separation devices. The plurality of separation devices are arranged in the main housing. The main housing includes a total air intake port, a total exhaust port, and a total liquid discharge port that are respectively communicated with the separation devices. The total air intake port is used for receiving the gas-liquid mixture, the separation device is used for separating the gas-liquid mixture, the total exhaust port is used for discharging the separated gas, and the total liquid discharge port is used for discharging the separated liquid. At least two separation devices are connected in series or in parallel. The plurality of separation devices are connected in a multi-stage series, parallel, or series-parallel hybrid connection to improve the separation efficiency and separation effect of the active separator.

[0022] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0024] Figure 1 Shown is a schematic diagram of an active separator with separation devices connected in series according to an exemplary embodiment of the present application;

[0025] Figure 2 Shown is a schematic diagram of an active separator with separation devices connected in parallel according to an exemplary embodiment of the present application.

[0026] Reference Numerals:

[0027] 1. Active separator; 2. Main housing; 3. Separation device; 4. Vacuum pumping device; 5. Pre-separation device; 20. Total air inlet; 21. Total air outlet; 22. Total liquid discharge port; 30. Separation medium; 31. Inner shell of separation device; 32. Outer shell of separation device; 33. Pressure valve; 34. Elastic member; 35. Sub-housing; 36. First liquid discharge channel; 37. Second liquid discharge channel; 38. Intake housing; 39. Third liquid discharge channel; 40. Fourth liquid discharge channel; 41. Suction port; 42. Outlet port; 43. Motor; 50. Pre-separation housing; 51. Baffle; 52. Pre-separation air inlet; 53. Pre-separation liquid discharge port; 54. Pre-separation air outlet; 300. First separation device; 301. Second separation device; 310. Separation air inlet; 311. First air inlet; 312. Second air inlet; 320. Separation outlet; 330. Contact portion; 331. Shielding portion; 350. Upper opening; 351. Lower opening; 380. Air inlet pipeline; 381. Pipeline inlet; 382. Pipeline outlet. Detailed implementation mode

[0028] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation modes described in the following exemplary embodiments do not represent all the implementation modes consistent with the present application. On the contrary, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0029] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit the present application. Unless otherwise defined, the technical terms or scientific terms used in this application should have the ordinary meaning understood by those of ordinary skill in the art to which this application belongs. The "first", "second" and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, the terms such as "a" or "one" do not indicate a quantity limitation, but indicate that there is at least one. "Multiple" or "several" means two or more. Unless otherwise indicated, the similar terms such as "front part", "rear part", "lower part" and / or "upper part" are only for convenience of description and are not limited to one position or a spatial orientation. The terms such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprise" cover the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. The terms such as "connect" or "be connected" are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect.

[0030] The terms used in this application are for the purpose of describing particular embodiments only and are not intended to limit the application. The singular forms "a", "the", and "said" used in this application and the appended claims are also intended to include the plural forms unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0031] This application provides an active separator and a vehicle. The active separator and the vehicle of this application will be described in detail below with reference to the accompanying drawings. The features in the following embodiments and implementation manners may be combined with each other without conflict.

[0032] Figure 1 The figure shows a schematic diagram of an active separator with separation devices connected in series according to an exemplary embodiment of this application. Figure 2 The figure shows a schematic diagram of an active separator with separation devices connected in parallel according to an exemplary embodiment of this application. As Figure 1 and Figure 2 shown, it includes a main housing 2 and a plurality of separation devices 3. The plurality of separation devices 3 are arranged in the main housing 2. The main housing 2 includes a total air inlet 20, a total exhaust port 21, and a total liquid discharge port 22 that are respectively in communication with the separation devices 3. The total air inlet 20 is used to receive the gas-liquid mixture, the separation device 3 is used to separate the gas-liquid mixture, the total exhaust port 21 is used to discharge the separated gas, and the total liquid discharge port 22 is used to discharge the separated liquid. At least two separation devices are connected in series or in parallel. In this way, when the plurality of separation devices 3 are connected in series, the gas-liquid mixture passes through the plurality of separation devices 3 in sequence, which can improve the separation effect of the active separator 1. When the plurality of separation devices 3 are connected in parallel, the gas-liquid mixture enters the plurality of separation devices 3 respectively, which can improve the separation efficiency of the active separator 1 under high flow rates. When the plurality of separation devices 3 are connected in a series-parallel hybrid manner, the separation efficiency of the active separator 1 and the gas flow rate can be improved simultaneously.

[0033] Among them, the separation device 3 includes a separation medium 30, an inner shell 31 of the separation device, and an outer shell 32 of the separation device. The separation medium 30 is located between the outer shell 32 and the inner shell 31 of the separation device. The inner shell 31 of the separation device includes a separation air inlet 310, and the separation air inlet 310 communicates with the separation medium 30. The separation medium 30 is used to adsorb the liquid in the gas-liquid mixture entering from the separation air inlet 310. A separation outlet 320 is provided at the bottom of the outer shell 32 of the separation device for discharging the separated liquid and gas. After the gas-liquid mixture enters the active separator 1 from the total air inlet 20 of the main housing 2, it enters the separation device 3 from the separation air inlet 310. The oil particles in the gas-liquid mixture are adsorbed by the separation medium 30, and the oil particles flow out from the separation outlet 320 along the separation medium 30. In some embodiments, the separation medium 30 may be a baffle, a felt, or other materials with a relatively high surface roughness to achieve a better separation effect, and the present application does not limit this.

[0034] In some embodiments, the separated air inlet 310 includes a first air inlet 311 and a second air inlet 312. A plurality of second air inlets 312 are provided on the side wall of the inner shell 31 of the separation device. The separation device 3 includes a pressure valve 33 and an elastic member 34. The pressure valve 33 is provided at the bottom of the inner shell 31 of the separation device. One end of the elastic member 34 is fixed to the inner top wall of the inner shell 31 of the separation device, and the other end of the elastic member 34 is connected to the pressure valve 33. The pressure valve 33 can move relative to the inner shell 31 of the separation device. The pressure valve 33 is used to block or open the second air inlet 312. When the pressure of the gas-liquid mixture received by the pressure valve 33 exceeds the lower threshold, the pressure valve 33 moves relative to the inner shell 31 of the separation device, driving the elastic member 34 to elastically deform and opening at least part of the second air inlet 312. The first air inlet 311 is located below the second air inlet 312 and the pressure valve 33. The bottom of the side wall of the inner shell 31 of the separation device is inwardly retracted in the horizontal direction to limit the position of the pressure valve 33 so that it can only move up and down within the inner shell 31 of the separation device. The first air inlet 311 is provided below the second air inlet 312, and the bottom wall of the pressure valve 33 is located between the first air inlet 311 and the second air inlet 312. It can be understood that the first air inlet 311 is in a normally open state. When the pressure of the gas-liquid mixture received by the pressure valve 33 does not exceed the lower threshold, a plurality of second air inlets 312 located on the side wall of the inner shell 31 of the separation device are blocked by the pressure valve. The gas-liquid mixture enters the separation device 3 through the first air inlet 311. When the gas-liquid mixture passes through the first air inlet 311, the flow rate increases, and it impacts the separation medium 30 to obtain the separated gas and liquid. When the pressure of the gas-liquid mixture received by the pressure valve 33 exceeds the lower threshold, the elastic member 34 is elastically deformed under the pressure from the pressure valve 33, driving the pressure valve 33 to move upward relative to the inner shell 31 of the separation device and opening at least part of the plurality of second air inlets 312 located on the side wall of the inner shell 31 of the separation device. The gas-liquid mixture impacts the separation medium 30 after passing through the first air inlet 311 and at least part of the second air inlet 312 to obtain the separated gas and liquid. The opened second air inlet 312 diverts the gas flow rate entering the first air inlet 311, thereby increasing the flow rate, but ensuring that the flow rate pressure drop does not increase much, and improving the separation efficiency of the active separator 1.

[0035] Specifically, at least a part of the second air inlets 312 are arranged vertically. The pressure valve 33 includes an abutting portion 330 and a shielding portion 331 connected to the abutting portion 330. The abutting portion 330 is connected to the elastic member 34. The shielding portion 331 extends vertically along the side wall of the inner shell 31 of the separation device. The shielding portion 331 can move vertically relative to the side wall of the inner shell 31 of the separation device to shield or open the second air inlets 312. In some embodiments, multiple first air inlets 311 can be designed at the same height according to the working conditions, or multiple second air inlets 312 can be designed at the same height, or the aperture sizes of the first air inlets 311 and the second air inlets 312 can be designed differently to further improve the separation efficiency of the active separator 1. The present application does not limit this.

[0036] Referring to Figure 2 the illustrated embodiment, multiple separation devices 3 include a first separation device 300 and a second separation device 301. The first separation device 300 and the second separation device 301 are connected in series. The first separation device 300 is located below the second separation device 301. The active separator 1 includes a sub-housing 35. The sub-housing 35 is located inside the main housing 2. Inside the sub-housing 35, the second separation device 301 is located outside the sub-housing 35. The separation device 3 includes a separation air inlet 310 and a separation outlet 320. The separation outlet 320 is used to discharge the separated liquid and gas. An upper opening 350 is provided in the upper part of the sub-housing 35, and a lower opening 351 is provided in the lower part of the sub-housing 35. The upper opening 350 is communicated with the separation air inlet 310 of the second separation device 301. The lower opening 351 is communicated with the separation outlet 320 of the first separation device 300 and is also communicated with the total liquid discharge port 22. The lower opening 351 is used to discharge the liquid separated by the first separation device 300. The gas separated by the first separation device 300 enters the second separation device 301 for secondary separation. With such an arrangement, the separation effect of the active separator 1 can be improved. The first separation device 300 is arranged inside the sub-housing 35, and the upper opening 350 of the sub-housing 35 is directly communicated with the separation air inlet 310 of the second separation device 301, preventing the gas separated by the first separation device 300 from escaping and directly discharging from the total exhaust port 21 of the active separator 1. In the embodiment of the present application, the number of the separation devices 3 is two. The number of the separation devices 3 can be selected according to different working conditions of the engine to ensure that the separation efficiency of the active separator 1 can meet the requirements of the actual working conditions. Preferably, the elastic member 34 or the pressure valve 33 of the second separation device 301 can be designed differently to ensure better separation effect and lower pressure loss.

[0037] In some embodiments, a first liquid discharge channel 36 is provided between the sub-housing 35 and the main housing 2. The first liquid discharge channel 36 communicates with the separation outlet 320 of the second separation device 301 and the total liquid discharge port 22. After being separated, the gas-liquid mixture is discharged from the separation outlet 320 of the second separation device 301 and discharged from the total liquid discharge port 22 through the first liquid discharge channel 36 out of the active separator 1. With such an arrangement, an independent liquid discharge channel can be ensured for the second separation device 301.

[0038] In some embodiments, the active separator 1 further includes a pre-separation device 5. The pre-separation device 5 and the first separation device 300 are connected in series. The pre-separation device 5 is located below the first separation device 300 and within the sub-housing 35. The pre-separation device 5 is used to pre-separate the gas-liquid mixture, and the plurality of separation devices 3 are used to separate the gas and liquid of the pre-separated gas-liquid mixture. In the embodiments of the present application, the pre-separation device 5 includes a pre-separation housing 50, a baffle 51, a pre-separation air inlet 52, a pre-separation liquid discharge port 53, and a pre-separation exhaust port 54. The pre-separation air inlet 52 communicates with the total air inlet 20. The pre-separation liquid discharge port 53 is provided at the bottom of the pre-separation housing 50. The pre-separation exhaust port 54 is provided at the top of the pre-separation housing 50 and communicates with the first separation device 300. The baffle 51 is arranged in the up-down direction in the pre-separation housing 50 and surrounds the pre-separation exhaust port 54. In the embodiments of the present application, the gas-liquid mixture tangentially enters from the pre-separation air inlet 52, rotates around the baffle 51, and under the action of centrifugal force, the large oil particles in the gas-liquid mixture are separated and discharged along the pre-separation liquid discharge port 53. Preferably, a labyrinth can be used to pre-separate the gas-liquid mixture, which can better balance the flow resistance and the separation effect.

[0039] In some embodiments, a second liquid discharge channel 37 is provided between the pre-separation device 5 and the sub-housing 35. The second liquid discharge channel 37 communicates with the separation outlet 320 of the first separation device 300 and the total liquid discharge port 22. After being separated, the gas-liquid mixture is discharged from the separation outlet 320 of the first separation device 300 and discharged from the total liquid discharge port 22 through the second liquid discharge channel 37 out of the active separator 1. With such an arrangement, an independent liquid discharge channel can be ensured for the first separation device 300.

[0040] Reference Figure 2In the illustrated embodiment, at least two separation devices 3 are connected in parallel. The separation device 3 includes a separation air inlet 310 and a separation outlet 320. The separation outlet 320 is used to discharge the separated liquid and gas. The active separator 1 includes an air inlet housing 38. The air inlet housing 38 includes a plurality of air inlet pipes 380. The air inlet pipes 380 include a pipe inlet 381 and a pipe outlet 382. The pipe outlets 382 of the plurality of air inlet pipes 380 are correspondingly connected to the separation air inlets 310 of at least two separation devices 3, and the pipe outlets 382 of the plurality of air inlet pipes 380 are all connected to the total air inlet 20. The air inlet pipes 380 are used to divide the gas-liquid mixture entering from the total air inlet 20. With such a setting, the separation efficiency of the active separator 1 under a large flow rate can be improved.

[0041] In some embodiments, a third liquid discharge channel 39 is provided between the air inlet housing 38 and the main housing 2. The third liquid discharge channel 39 connects the separation outlet 320 and the total liquid discharge port 22. After being separated, the gas-liquid mixture is discharged from the separation outlet 320 of the separation device 3 close to the main housing 2, and is discharged from the total liquid discharge port 22 of the active separator 1 through the third liquid discharge channel 39. With such a setting, an independent liquid discharge channel for the separation device 3 can be ensured.

[0042] In some embodiments, the active separator 1 further includes a pre-separation device 5. The pre-separation device 5 and at least two separation devices 3 are connected in series through the air inlet housing 38. The pre-separation device 5 is located below the air inlet housing 38. The pre-separation device 5 is used to pre-separate the gas-liquid mixture, and the separation device 3 is used to perform gas-liquid separation on the pre-separated gas-liquid mixture. Figure 2 The structure inside the pre-separation device 5 in the illustrated embodiment is Figure 1 substantially the same as that of the pre-separation device 5 shown, and this application will not elaborate on it further.

[0043] In some embodiments, a fourth liquid discharge channel is provided between the pre-separation device 5 and the main housing 2. The fourth liquid discharge channel 40 connects the separation outlets 320 of at least two separation devices 3 and the total liquid discharge port 22. The fourth liquid discharge channel 40 is connected to the third liquid discharge channel 39. After being separated, the gas-liquid mixture is discharged from the separation outlet 320 of the separation device 3 close to the main housing 2, and is discharged from the total liquid discharge port 22 of the active separator 1 after passing through the third liquid discharge channel 39 and the fourth liquid discharge channel 40 in sequence. With such a setting, an independent liquid discharge channel for the separation device 3 can be ensured.

[0044] This application also provides a vehicle, which includes an engine crankcase and the active separator 1 as described in any of the above embodiments, and is connected to the engine crankcase.

[0045] Reference Figure 1 and Figure 2The illustrated embodiment further includes a vacuum pumping device 4, which includes an air suction port 41 and an air outlet 42. The air suction port 41 is communicated with the total exhaust port 21. The vacuum pumping device 4 is driven by a motor 43 and is configured to suck the separated gas in the active separator 1 through the air suction port 41 and discharge it through the air outlet 42. The arrangement of the plurality of separation devices 3 and the sub-housing 35 results in a relatively large flow resistance of the separated gas within the active separator 1. Therefore, the vacuum pumping device 4 is required to discharge the separated gas. In addition, under low-load operating conditions of the vehicle, the negative pressure on the intake side of the engine is too low, which may cause a positive pressure in the crankcase. The use of the vacuum pumping device 4 can solve the problem of positive crankcase pressure under certain operating conditions.

[0046] Those skilled in the art will readily conceive of other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include known common knowledge or conventional technical means in the technical field not disclosed herein. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present application are pointed out by the following claims.

[0047] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. An active separator, characterized in that, Comprising: Main housing; A plurality of separation devices disposed within the main housing, the main housing including a total inlet, a total outlet, and a total drain port respectively communicating with the separation devices, the total inlet for receiving a gas-liquid mixture, the separation devices for separating the gas-liquid mixture, the total outlet for discharging the separated gas, and the total drain port for discharging the separated liquid; At least two of the separation devices are connected in series or in parallel; The separation device includes a separation medium, an inner shell of the separation device, and an outer shell of the separation device, the separation medium being located between the outer shell of the separation device and the inner shell of the separation device, the inner shell of the separation device including a separation inlet communicating with the separation medium, the separation medium for adsorbing the liquid in the gas-liquid mixture entering from the separation inlet, and a separation outlet provided at the bottom of the outer shell of the separation device for discharging the separated liquid and gas; The separation inlet includes a first inlet and a second inlet, a plurality of the second inlets being provided on the side wall of the inner shell of the separation device, the separation device including a pressure valve and an elastic member, the pressure valve being disposed at the bottom of the inner shell of the separation device, one end of the elastic member being fixed to the inner top wall of the inner shell of the separation device, the other end of the elastic member being connected to the pressure valve, the pressure valve being movable relative to the inner shell of the separation device, the pressure valve for blocking or opening the second inlet, when the pressure of the gas-liquid mixture received by the pressure valve exceeds the lower limit of the threshold value, the pressure valve moves relative to the inner shell of the separation device, driving the elastic member to elastically deform and opening at least part of the second inlets; the first inlet is located below the second inlet and the pressure valve; A plurality of the separation devices include a first separation device and a second separation device, the first separation device and the second separation device being connected in series, the first separation device being located below the second separation device, the active separator including a sub-housing located within the main housing, the first separation device being located inside the sub-housing, and the second separation device being located outside the sub-housing; The separation device includes a separation inlet and a separation outlet for discharging the separated liquid and gas; an upper opening is provided at the upper part of the sub-housing, and a lower opening is provided at the lower part of the sub-housing, the upper opening communicating with the separation inlet of the second separation device, the lower opening communicating with the separation outlet of the first separation device and also communicating with the total drain port, the lower opening for discharging the liquid separated by the first separation device.

2. The active separator according to claim 1, wherein At least part of the second inlets are arranged vertically, the pressure valve including an abutting portion and a shielding portion connected to the abutting portion, the abutting portion being connected to the elastic member, the shielding portion extending vertically along the side wall of the inner shell of the separation device, the shielding portion being movable vertically relative to the side wall of the inner shell of the separation device to block or open the second inlet.

3. The active separator according to claim 1, wherein A first liquid discharge channel is provided between the sub-housing and the main housing, and the first liquid discharge channel communicates with the separation outlet of the second separation device and the total liquid discharge port.

4. The active separator according to claim 1, characterized in that, The active separator further includes a pre-separation device, the pre-separation device and the first separation device are connected in series, the pre-separation device is located below the first separation device and within the sub-housing, the pre-separation device is used for pre-separating the gas-liquid mixture, and the plurality of separation devices are used for gas-liquid separation of the pre-separated gas-liquid mixture; A second liquid discharge channel is provided between the pre-separation device and the sub-housing, and the second liquid discharge channel communicates with the separation outlet of the first separation device and the total liquid discharge port.

5. The active separator according to claim 1, wherein At least two of the separation devices are connected in parallel, each separation device includes a separation air inlet and a separation outlet, and the separation outlet is used for discharging the separated liquid and gas; The active separator includes an intake housing, the intake housing includes a plurality of intake pipelines, each intake pipeline includes a pipeline inlet and a pipeline outlet, the pipeline outlets of the plurality of intake pipelines correspondingly communicate with the separation air inlets of at least two of the separation devices, and the pipeline outlets of the plurality of intake pipelines are all communicated with the total intake port.

6. The active separator according to claim 5, characterized in that, A third liquid discharge channel is provided between the intake housing and the main housing, and the third liquid discharge channel communicates with the separation outlet and the total liquid discharge port.

7. The active separator according to claim 5, characterized in that, The active separator further includes a pre-separation device, the pre-separation device and at least two of the separation devices are connected in series through the intake housing, the pre-separation device is located below the intake housing, the pre-separation device is used for pre-separating the gas-liquid mixture, and the separation device is used for gas-liquid separation of the pre-separated gas-liquid mixture; A fourth liquid discharge channel is provided between the pre-separation device and the main housing, and the fourth liquid discharge channel communicates with the separation outlets of at least two of the separation devices and the total liquid discharge port.

8. A vehicle, characterized in that, Comprising: An engine crankcase; The active separator according to any one of claims 1-7, connected to the engine crankcase.

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