WO2024087716A1 - 油气分离器和发动机 - Google Patents

油气分离器和发动机 Download PDF

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Publication number
WO2024087716A1
WO2024087716A1 PCT/CN2023/104594 CN2023104594W WO2024087716A1 WO 2024087716 A1 WO2024087716 A1 WO 2024087716A1 CN 2023104594 W CN2023104594 W CN 2023104594W WO 2024087716 A1 WO2024087716 A1 WO 2024087716A1
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WO
WIPO (PCT)
Prior art keywords
oil
assembly
gas separator
cavity
air outlet
Prior art date
Application number
PCT/CN2023/104594
Other languages
English (en)
French (fr)
Inventor
王军
何骁
Original Assignee
上海弗列加滤清器有限公司
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Application filed by 上海弗列加滤清器有限公司 filed Critical 上海弗列加滤清器有限公司
Publication of WO2024087716A1 publication Critical patent/WO2024087716A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M2013/0422—Separating oil and gas with a centrifuge device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M2013/0438—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with a filter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M2013/0477—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil by separating water or moisture
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M2013/0488—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with oil trap in the return conduit to the crankcase

Definitions

  • the present application relates to the technical field of oil-gas separators, for example, to an oil-gas separator and an engine.
  • crankcase ventilation filter also known as the oil-gas separator
  • the oil-gas separator in the related technology intercepts the oil vapor in the original crankcase ventilation system and liquefies it into separated oil and returns it to the engine.
  • a small amount of water vapor in the crankcase gas will also be intercepted and liquefied into water, which will return to the engine together with the liquefied oil.
  • This part of water will form an oil emulsion with the engine oil during the operation of the engine, greatly shortening the oil replacement and maintenance cycle, and ultimately affecting the oil life and engine performance.
  • This problem is particularly prominent in natural gas engines and hydrogen engines, and is even more serious in low temperature environments.
  • the present application provides an oil-gas separator and an engine, which can not only separate oil and gas, but also separate oil and water, thereby reducing the water content in the filtered engine oil.
  • the oil-gas separator comprises a shell assembly, a base assembly, a rotating shaft assembly, a bottom baffle and an air outlet cavity assembly, wherein the inner cavity of the base assembly is an oil return cavity, the bottom baffle is arranged between the shell assembly and the base assembly, one end of the rotating shaft assembly provided with a separation impeller is rotatably arranged on the bottom baffle through a bearing, one end of the rotating shaft assembly provided with an oil-gas separation filter element is rotatably arranged in the inner cavity of the shell assembly, an outer side wall of the oil-gas separation filter element and an inner side wall of the shell assembly form a throwing channel, a cavity is formed between the bottom sealing plate of the air outlet cavity assembly and the bottom baffle, and further comprises:
  • a storage groove is annularly recessed on the bottom baffle plate with the axis of the rotating shaft assembly as the center, and the storage groove is connected to the ejection channel;
  • An oil-water separation filter material is disposed in the storage tank and divides the storage tank into an oil storage chamber and a water storage chamber;
  • a drain port is arranged on a side wall of the storage tank and communicated with the water storage cavity.
  • the two opposite inner wall surfaces of the storage tank are respectively provided with a first step surface and a second step surface, and the oil-water separation filter material is attached to the first step surface and the second step surface.
  • the height of the first step surface relative to the bottom of the storage tank is equal to the height of the second step surface relative to the bottom of the storage tank, and the longitudinal section of the oil storage cavity is a trapezoidal structure.
  • a height of the first step surface relative to the bottom of the storage tank is greater than a height of the second step surface relative to the bottom of the storage tank.
  • a mounting beam is provided at the notch of the storage tank, and a mounting portion is protruding from the outer peripheral wall of the air outlet cavity assembly.
  • the mounting portion is installed on the mounting beam using fasteners, and the outer peripheral wall of the air outlet cavity assembly abuts against the flat end surface of the bottom partition.
  • an inlet hole is formed through the outer peripheral wall of the air outlet cavity assembly to connect the cavity with the oil storage cavity.
  • the bottom sealing plate of the air outlet cavity assembly is convexly provided with a plurality of supporting protrusions, and the plurality of supporting protrusions abut against the flat end surface of the bottom partition plate.
  • the bottom baffle is recessed with an escape portion, and the escape portion is engaged with the outer wall surface of the injection channel of the base assembly.
  • a sealing ring is provided at the connection between the bottom baffle and the shell assembly.
  • An engine includes the oil-gas separator as described above, wherein an air inlet and an air outlet are provided on a shell assembly, an air outlet cavity assembly located in the shell assembly is connected to the air outlet, one end of the drain outlet extends out of the base assembly, the crankcase of the engine is connected to the air inlet, and the oil pan of the engine is connected to the oil return port of the base assembly.
  • the oil-gas separator provided in the present application has an annular storage groove recessed on the bottom partition, and the base assembly
  • the jet channel inside sprays the oil to the separation impeller, so that the rotor drives the oil-gas separation filter element to rotate.
  • the oil vapor that initially enters the housing is filtered by the oil-gas separation filter element of the shaft assembly, and the liquefied oil and part of the water are centrifugally thrown into the throwing channel and flow downward along the inner wall of the housing assembly to the storage tank of the bottom partition. Since the density of the oil is less than that of water, stratification occurs.
  • the water in the bottom layer is absorbed by the oil-water separation filter material at the bottom of the storage tank and flows out quickly through the water storage cavity and the drain port.
  • the oil in the upper layer cannot flow downward due to the obstruction of the oil-water separation filter material. After accumulating to a certain height in the upper part of the oil storage cavity, it returns to the base assembly through the gap between the bottom partition and the bottom sealing plate of the outlet cavity assembly through the gap of the bearing, and finally returns to the engine oil pan to participate in subsequent work. It can not only intercept the oil vapor in the crankcase to form liquid, play the role of oil and gas separation, but also further separate the water in the separated oil, play the role of oil and water separation, and finally achieve the purpose of reducing the water content in the oil, extending the service life of the oil, and better protecting the engine.
  • the engine provided by the present application can not only filter the oil vapor in the crankcase to form liquid, thereby playing the role of oil-gas separation, but also can further separate the water in the separated oil, thereby playing the role of oil-water separation, reducing the water content in the oil and extending the service life of the engine.
  • FIG1 is a front view of an oil-gas separator in an embodiment of the present application.
  • FIG2 is a right side view of the oil-gas separator in the embodiment of the present application.
  • FIG3 is an exploded schematic diagram of an oil-gas separator from a first perspective in an embodiment of the present application
  • FIG. 4 is a second perspective exploded view of the oil-gas separator in the embodiment of the present application.
  • FIG5 is a cross-sectional view of an oil-gas separator in an embodiment of the present application.
  • FIG6 is a partial enlarged view of point A in FIG5 ;
  • FIG7 is a cross-sectional view of a first storage tank in an embodiment of the present application.
  • FIG8 is a cross-sectional view of a second storage tank in an embodiment of the present application.
  • FIG9 is a schematic diagram of the structure of the bottom partition in an embodiment of the present application.
  • FIG10 is a partial enlarged view of point B in FIG9;
  • FIG11 is a schematic diagram of the flow path of the engine oil after oil-gas separation in an embodiment of the present application.
  • FIG. 12 is a schematic diagram of the flow path of water after oil and gas separation in an embodiment of the present application.
  • Oil return chamber 21. Oil return chamber; 22. Injection channel; 23. Oil return port; 24. Through hole;
  • the terms “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inside”, “outside”, etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.
  • the terms “first”, “second”, “third”, etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
  • “multiple" means two or more.
  • a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them.
  • a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.
  • a first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
  • the existing oil-gas separator intercepts the oil vapor in the original crankcase ventilation system and liquefies it into separated oil before returning it to the engine.
  • a small amount of water vapor in the crankcase gas will also be intercepted and liquefied into water, which will return to the engine along with the liquefied oil.
  • This part of water will form an oil emulsion with the engine oil during the operation of the engine, greatly shortening the oil replacement and maintenance cycle, and ultimately affecting the oil life and engine performance. This problem is particularly prominent in natural gas engines and hydrogen engines, and is even more serious in low temperature environments.
  • this embodiment provides an oil-gas separator, and the specific contents of this embodiment are described in detail below in conjunction with Figures 1 to 12.
  • the oil-gas separator includes a housing assembly 1, a base assembly 2, a rotating shaft assembly 4, a bottom baffle 3 and an air outlet cavity assembly 6.
  • the inner cavity of the base assembly 2 is an oil return cavity 21.
  • the bottom baffle 3 is arranged between the housing assembly 1 and the base assembly 2.
  • One end of the rotating shaft assembly 4 is provided with a separation impeller 41 and is rotatably arranged on the bottom baffle 3 through a bearing 42.
  • One end of the rotating shaft assembly 4 is provided with an oil-gas separation filter element 43 and is rotatably arranged in the inner cavity of the housing assembly 1.
  • a throwing channel 7 is formed between the outer wall of the oil-gas separation filter element 43 and the inner wall of the housing assembly 1.
  • the oil-gas separator also includes a storage tank 31, an oil-water separation filter material 9 and a drain port 10.
  • the storage tank 31 is annularly recessed on the bottom baffle 3 with the axis of the rotating shaft assembly 4 as the center, and the storage tank 31 is connected to the throwing channel 7 up and down.
  • the oil-water separation filter material 9 is disposed in the storage tank 31 and divides the storage tank 31 into an oil storage chamber 32 and a water storage chamber 33.
  • the drain port 10 is disposed on the side wall of the storage tank 31 and communicates with the water storage chamber 33.
  • the oil-gas separator provided in the present application has an annular storage groove 31 recessed on the bottom partition 3, and the injection channel 22 in the base assembly 2 sprays the engine oil to the separation impeller 41, so that the rotor 44 drives the oil-gas separation filter element 43 to rotate, and the engine oil vapor initially entering the shell is filtered by the oil-gas separation filter element 43 of the shaft assembly 4, and the liquefied engine oil and part of the water are centrifugally thrown into the throwing channel 7 and flow downward along the inner wall surface of the shell assembly 1 to the storage groove 31 of the bottom partition 3. Since the density of the engine oil is less than that of water, stratification will occur.
  • the water in the bottom layer is absorbed by the oil-water separation filter material 9 at the bottom of the storage groove 31 and flows out quickly through the water storage chamber 33 and the drain port 10.
  • the engine oil in the upper layer cannot flow out downward due to the obstruction of the oil-water separation filter material 9. After accumulating to a certain height in the upper part of the oil storage chamber 32, it returns to the base assembly 2 through the gap of the bearing 42 from the cavity 8 between the bottom partition 3 and the bottom sealing plate 61 of the outlet chamber assembly 6, and finally returns to the engine oil pan to participate in subsequent work.
  • the two opposite inner wall surfaces of the storage tank 31 are respectively provided with a first step surface 311 and a second step surface 312, and the oil-water separation filter material 9 is attached to the first step surface 311 and the second step surface 312.
  • the addition of the first step surface 311 and the second step surface 312 facilitates the installation and placement of the oil-water separation filter material 9.
  • the height of the first step surface 311 relative to the bottom of the storage tank 31 is equal to the height of the second step surface 312 relative to the bottom of the storage tank 31, and the longitudinal section of the oil storage cavity 32 is a trapezoidal structure.
  • the oil-water separation filter material 9 is installed more firmly as it moves downward relative to the storage tank 31.
  • the height of the first step surface 311 relative to the bottom of the storage groove 31 is greater than the height of the second step surface 312 relative to the bottom of the storage groove 31, and the oil-water separation filter material 9 is obliquely arranged on the first step surface 311 and the second step surface 312.
  • the depth of the left side of the oil storage cavity 32 in Figure 5 is greater than the depth of the right side, and the oil and water left along the shell assembly 1 preferentially enter the deeper left side of the oil storage cavity 32, which is convenient for oil and water stratification.
  • the stratified engine oil then floats to the shallower right side of the oil storage cavity 32, and flows into the cavity 8 from the right side of the oil storage cavity 32 and enters the gap of the bearing 42; on the other hand, the contact area between the oil-water separation filter material 9 and the oil and water is increased, thereby accelerating the separation speed of the oil-water separation filter material 9.
  • a mounting beam 34 is provided at the notch of the storage slot 31, a mounting portion 63 is convexly provided on the peripheral wall 62 of the air outlet cavity assembly 6, and the mounting portion 63 is mounted on the mounting beam 34 using a fastener 64, and the peripheral wall 62 of the air outlet cavity assembly 6 abuts against the flat end surface 35 of the bottom partition 3.
  • a plurality of mounting beams 34 are provided at the notch of the storage slot 31 to facilitate mounting the air outlet cavity assembly 6 on the bottom partition 3.
  • the outer peripheral wall 62 of the air outlet cavity assembly 6 is provided with an inflow hole 65 so that the cavity 8 is connected with the oil storage cavity 32.
  • a plurality of inflow holes 65 are arranged at intervals in the circumferential direction.
  • the inflow holes 65 are rectangular.
  • the inflow holes 65 can also be circular or special-shaped holes, etc., which are not limited too much here.
  • a guide groove can be recessed in the flat end surface 35, one end of the guide groove is connected to the oil storage chamber 32, and one end of the guide groove is connected to the installation position of the bearing 42, so that the oil accumulated in the oil storage chamber 32 can flow through the guide groove to the installation position of the bearing 42.
  • the bottom sealing plate 61 of the air outlet cavity assembly 6 is provided with a plurality of supporting protrusions 66, and the plurality of supporting protrusions 66 abut against the flat end surface 35 of the bottom partition plate 3.
  • the air outlet cavity assembly 6 is auxiliary supported.
  • the bottom baffle plate 3 is recessed with an escape portion 36, which is engaged with the outer wall surface of the injection channel 22 of the base assembly 2, which facilitates the assembly of the bottom baffle plate 3 and the base assembly 2, and avoids structural interference between the bottom baffle plate 3 and the outer wall surface of the injection channel 22.
  • the height of the first step surface 311 and the second step surface 312 are both less than the protruding height of the escape portion 36, so the oil-water separation filter material 9 is an incomplete annular structure with a gap.
  • the oil-water separation filter material 9 is made of hydrophilic and oleophobic material, and a plurality of undulating angled edges are arranged on the surface of the oil-water separation filter material 9 to increase the contact area between oil and water and the oil-water separation filter material 9 and accelerate the filtration speed of the oil-water separation filter material 9.
  • a sealing ring 37 is provided at the connection between the bottom partition plate 3 and the shell assembly 1.
  • a limiting groove is provided at the lower opening of the shell assembly 1, and the sealing ring 37 is installed in the limiting groove. The sealing performance of the connection between the bottom partition plate 3 and the shell assembly 1 is improved by adding the sealing ring 37.
  • This embodiment also provides an engine, which includes an oil-gas separator, a housing assembly 1 is provided with an air inlet 11 and an air outlet 12, an air outlet cavity assembly 6 located in the housing assembly 1 is connected to the air outlet 12, one end of the water outlet 10 extends out of the base assembly 2 through a through hole 24, the crankcase of the engine is connected to the air inlet 11, and the oil pan of the engine is connected to the oil return port 23 of the base assembly 2.
  • an engine which includes an oil-gas separator, a housing assembly 1 is provided with an air inlet 11 and an air outlet 12, an air outlet cavity assembly 6 located in the housing assembly 1 is connected to the air outlet 12, one end of the water outlet 10 extends out of the base assembly 2 through a through hole 24, the crankcase of the engine is connected to the air inlet 11, and the oil pan of the engine is connected to the oil return port 23 of the base assembly 2.
  • the oil vapor in the crankcase be filtered to form liquid, playing the role of oil-gas separation, but also the water in the separated oil can be further separated, playing the

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

一种油气分离器和发动机，油气分离器包括：存储槽，以转轴总成的轴线为中心环形凹设于底隔板，存储槽与甩出通道连通；油水分离滤材，设置于存储槽内并将存储槽分隔为储油腔和储水腔；排水口，设置于存储槽的侧壁并与储水腔连通。

Description

油气分离器和发动机
本申请要求在2022年10月27日提交中国专利局、申请号为202211327951.0的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及油气分离器技术领域，例如涉及一种油气分离器和发动机。
背景技术
现在曲轴箱通风系统的排放计入了整车排放测试项目，成为了排放的影响因素之一，因此曲轴箱通风滤清器(又称油气分离器)成为了几乎所有发动机的标配。
相关技术中的油气分离器是将原曲轴箱通风系统中的机油蒸汽进行拦截并液化成机油分离出来重新回到发动机，但是在这个过程中曲轴箱气体中的水蒸气也会有少量被拦截液化成水，随同液化后的机油一同回到发动机。这一部分水会与发动机机油在发动机工作过程中形成机油乳化物，大大缩短了机油的更换保养周期，最终影响到机油的寿命和发动机的性能。该问题在天然气发动机，氢气发动机上表现尤其突出，而且在低温环境下更加的严重。
发明内容
本申请提供一种油气分离器和发动机，不仅可以油气分离，还可以油水分离，降低过滤完机油中的含水量。
为实现上述目的，提供以下技术方案：
油气分离器，包括壳体总成、底座总成、转轴总成、底隔板和出气腔总成，所述底座总成的内腔为回油腔，所述底隔板设置于所述壳体总成和所述底座总成之间，所述转轴总成设置有分离叶轮的一端通过轴承转动设置于所述底隔板，所述转轴总成设置有油气分离滤芯的一端转动设置于所述壳体总成的内腔，所述油气分离滤芯的外侧壁与所述壳体总成的内侧壁之间形成甩出通道，所述出气腔总成的底封板与所述底隔板之间形成空腔，还包括：
存储槽，以所述转轴总成的轴线为中心环形凹设于所述底隔板，所述存储槽与所述甩出通道连通；
油水分离滤材，设置于所述存储槽内并将所述存储槽分隔为储油腔和储水腔；
排水口，设置于所述存储槽的侧壁并与所述储水腔连通。
作为油气分离器的可选方案，所述存储槽的相对两内壁面分别设置有第一台阶面和第二台阶面，所述油水分离滤材贴附于所述第一台阶面和所述第二台阶面上。
作为油气分离器的可选方案，所述第一台阶面相对所述存储槽的槽底的高度等于所述第二台阶面相对所述存储槽的槽底的高度，且所述储油腔的纵截面呈梯形结构。
作为油气分离器的可选方案，所述第一台阶面相对所述存储槽槽底的高度大于所述第二台阶面相对所述存储槽槽底的高度。
作为油气分离器的可选方案，所述存储槽的槽口处设置有安装梁，所述出气腔总成的外周壁凸设有安装部，所述安装部采用紧固件安装在所述安装梁上，所述出气腔总成的外周壁抵接于所述底隔板的平端面。
作为油气分离器的可选方案，所述出气腔总成的外周壁贯通开设有流入孔，以使所述空腔与所述储油腔连通。
作为油气分离器的可选方案，所述出气腔总成的底封板凸设有多个支撑凸点，多个所述支撑凸点抵接于所述底隔板的平端面。
作为油气分离器的可选方案，所述底隔板凹设有避让部，所述避让部与所述底座总成的喷射通道的外壁面相扣合。
作为油气分离器的可选方案，所述底隔板与所述壳体总成的连接处设置有密封圈。
发动机，包括如上所述的油气分离器，壳体总成上设置有进气口和出气口，位于所述壳体总成内的出气腔总成与所述出气口连通，排水口的一端伸出底座总成，所述发动机的曲轴箱与所述进气口连通，所述发动机的油底壳与所述底座总成的回油口连通。
与相关技术相比，本申请的有益效果：
本申请所提供的油气分离器，在底隔板上凹设有环形的存储槽，底座总成 内的喷射通道向分离叶轮喷出机油，使转子带动油气分离滤芯转动，初始进入壳体内的机油蒸汽经过转轴总成的油气分离滤芯的过滤，将液化后的机油和部分水离心甩落至甩出通道内并沿壳体总成的内壁面向下流动至底隔板的存储槽内，由于机油的密度小于水的密度出现分层，底层的水被存储槽下部的油水分离滤材吸收并经储水腔和排水口迅速流出，上层的机油因为油水分离滤材的阻拦无法向下流出，在储油腔的上部累积到达一定高度后再从底隔板与出气腔总成的底封板之间的空腔，经由轴承的间隙回到底座总成，最终回到发动机油底壳内参与后续工作。不但能将曲轴箱中的机油蒸汽进行拦截形成液体，起到油气分离的作用，还能将分离出的机油中的水进一步进行分离，起到油水分离的作用，最终达到了减少机油中水的含量，延长机油使用寿命，更好的保护发动机的目的。
本申请所提供的发动机，不但能将曲轴箱中的机油蒸汽进行过滤形成液体，起到油气分离的作用，还能将分离出的机油中的水进一步进行分离，起到油水分离的作用，降低机油中的含水量，延长发动机使用寿命的作用。
附图说明
下面将对本申请实施例描述中所需要使用的附图作简单的介绍，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据本申请实施例的内容和这些附图获得其他的附图。
图1为本申请实施例中油气分离器的正视图；
图2为本申请实施例中油气分离器的右视图；
图3为本申请实施例中油气分离器的第一视角爆炸示意图；
图4为本申请实施例中油气分离器的第二视角爆炸示意图
图5为本申请实施例中油气分离器的剖视图；
图6为图5中A处的局部放大图；
图7为本申请实施例中第一种存储槽的剖视图；
图8为本申请实施例中第二种存储槽的剖视图；
图9为本申请实施例中底隔板的结构示意图；
图10为图9中B处的局部放大图；
图11为本申请实施例中完成油气分离后机油的流动路径示意图；
图12为本申请实施例中完成油气分离后水的流动路径示意图。
附图标记：
1、壳体总成；2、底座总成；3、底隔板；4、转轴总成；5、轴承；6、出气腔总成；7、甩出通道；8、空腔；9、油水分离滤材；10、排水口；
11、进气口；12、出气口；
21、回油腔；22、喷射通道；23、回油口；24、过孔；
31、存储槽；311、第一台阶面；312、第二台阶面；32、储油腔；33、储水腔；34、安装梁；35、平端面；36、避让部；37、密封圈；
41、分离叶轮；42、轴承；43、油气分离滤芯；44、转子；
61、底封板；62、外周壁；63、安装部；64、紧固件；65、流入孔；66、支撑凸点。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本申请实施例的组件可以以各种不同的配置来布置和设计。
因此，以下对在附图中提供的本申请的实施例的详细描述仅仅表示本申请的选定实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步定义和解释。
在本申请的描述中，需要说明的是，术语“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，或者是该申请产品使用时惯常摆放的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”、“第三”等仅用于区分描述，而不能理解为指示或暗示相对重要性。在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。
在本申请的描述中，还需要说明的是，除非另有明确的规定，术语“设置”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本申请，而不能理解为对本申请的限制。
现有的油气分离器是将原曲轴箱通风系统中的机油蒸汽进行拦截并液化成机油分离出来重新回到发动机，但是在这个过程中曲轴箱气体中的水蒸气也会有少量被拦截液化成水，随同液化后的机油一同回到发动机。这一部分水会与发动机机油在发动机工作过程中形成机油乳化物，大大缩短了机油的更换保养周期，最终影响到机油的寿命和发动机的性能。该问题在天然气发动机，氢气发动机上表现尤其突出，而且在低温环境下更加的严重。
为了降低油气分离器过滤完后机油中的含水量，本实施例提供一种油气分离器，以下结合图1至图12对本实施例的具体内容进行详细描述。
如图1至图10所示，油气分离器包括壳体总成1、底座总成2、转轴总成4、底隔板3和出气腔总成6，底座总成2的内腔为回油腔21，底隔板3设置于壳体总成1和底座总成2之间，转轴总成4设置有分离叶轮41的一端通过轴承42转动设置于底隔板3，转轴总成4设置有油气分离滤芯43的一端转动设置于壳体总成1的内腔，油气分离滤芯43的外侧壁与壳体总成1的内侧壁之间形成甩出通道7，出气腔总成6的底封板61与底隔板3之间形成空腔8。油气分离器还包括存储槽31、油水分离滤材9和排水口10。其中存储槽31以转轴总成4的轴线为中心环形凹设于底隔板3，存储槽31与甩出通道7上下连通。油水分离滤材9设置于存储槽31内并将存储槽31分隔为储油腔32和储水腔33。排水口10设置于存储槽31的侧壁并与储水腔33连通。
简而言之，本申请所提供的油气分离器，在底隔板3上凹设有环形的存储槽31，底座总成2内的喷射通道22向分离叶轮41喷出机油，使转子44带动油气分离滤芯43转动，初始进入壳体内的机油蒸汽经过转轴总成4的油气分离滤芯43的过滤，将液化后的机油和部分水离心甩落至甩出通道7内并沿壳体总成1的内壁面向下流动至底隔板3的存储槽31内，由于机油的密度小于水的密度会出现分层，底层的水被存储槽31下部的油水分离滤材9吸收并经储水腔33和排水口10迅速流出，上层的机油因为油水分离滤材9的阻拦无法向下流出，在储油腔32的上部累积到达一定高度后再从底隔板3与出气腔总成6的底封板61之间的空腔8，经由轴承42的间隙回到底座总成2，最终回到发动机油底壳内参与后续工作。如图11和图12所示，不但能将曲轴箱中的机油蒸汽进行拦截形成液体，起到油气分离的作用，还能将分离出的机油中的水进一步进行分离，起到油水分离的作用，最终减少机油中水的含量，延长机油使用寿命，更好的保护发动机。
在一实施例中，如图6和图7所示，存储槽31的相对两内壁面分别设置有第一台阶面311和第二台阶面312，油水分离滤材9贴附于第一台阶面311和第二台阶面312上。通过增设第一台阶面311和第二台阶面312便于安装放置油水分离滤材9。
在一些应用场景中，如图6所示，第一台阶面311相对存储槽31的槽底的高度等于第二台阶面312相对存储槽31的槽底的高度，且储油腔32的纵截面呈梯形结构。利用倒置后的梯形结构，使油水分离滤材9相对存储槽31越下移越安装牢固。
在一些应用场景中，如图8所示，第一台阶面311相对存储槽31槽底的高度大于第二台阶面312相对存储槽31槽底的高度，油水分离滤材9倾斜设置于第一台阶面311和第二台阶面312上，一方面使图5中的储油腔32左侧的深度大于右侧的深度，沿壳体总成1留下的油水优先进入储油腔32深度较深的左侧，便于油水分层，分层后的机油再漂浮到储油腔32深度较浅的右侧，并从储油腔32的右侧流入空腔8进入轴承42的间隙内；另一方面增大油水分离滤材9与油水的接触面积，加快油水分离滤材9的分离速度。
在一实施例中，如图9所示，存储槽31的槽口处设置有安装梁34，出气腔总成6的外周壁62凸设有安装部63，安装部63采用紧固件64安装在安装梁34上，出气腔总成6的外周壁62抵接于底隔板3的平端面35。可选地，存储槽31的槽口处设置有多个安装梁34，便于将出气腔总成6安装到底隔板3上。
在一实施例中，如图3和图4所示，出气腔总成6的外周壁62贯通开设有流入孔65，以使空腔8与储油腔32连通。可选地，出气腔总成6的外周壁62 周向间隔设置有多个流入孔65。在本实施例中，流入孔65为矩形。在其他实施例中，流入孔65还可以是圆形或异形孔等，在此不做过多限制。
可选地，在其他应用场景中，可以在平端面35凹设导流槽，导流槽的一端与储油腔32连通，导流槽的一端与轴承42的安装处连通，使储油腔32内累积的机油通过导流槽流道轴承42的安装处。
在一实施例中，如图4所示，出气腔总成6的底封板61凸设有多个支撑凸点66，多个支撑凸点66抵接于底隔板3的平端面35。通过在底封板61靠近平端面35的一侧设置多个支撑凸点66，用于辅助支撑出气腔总成6。
在一实施例中，底隔板3凹设有避让部36，避让部36与底座总成2的喷射通道22的外壁面相扣合，一方面便于底隔板3与底座总成2的装配，另一方面避免底隔板3与喷射通道22的外壁面发生结构干涉。可选地，第一台阶面311和第二台阶面312高度均小于避让部36的凸起高度，因此，油水分离滤材9为带有缺口的非完整的环形结构。
在本实施例中，油水分离滤材9采用亲水疏油材料制成，油水分离滤材9表面设置有多个起伏的折角边，增大油水与油水分离滤材9的接触面积，加快油水分离滤材9的过滤速度。
在一实施例中，如图4和图5所示，底隔板3与壳体总成1的连接处设置有密封圈37。可选地，在壳体总成1的下端开口处设置有限位槽，密封圈37安装于限位槽内，通过增设密封圈37提高底隔板3与壳体总成1连接处的密封性。
本实施例还提供了一种发动机，该发动机包括油气分离器，壳体总成1上设置有进气口11和出气口12，位于壳体总成1内的出气腔总成6与出气口12连通，排水口10的一端通过过孔24伸出底座总成2，发动机的曲轴箱与进气口11连通，发动机的油底壳与底座总成2的回油口23连通。不但能将曲轴箱中的机油蒸汽进行过滤形成液体，起到油气分离的作用，还能将分离出的机油中的水进一步进行分离，起到油水分离的作用，降低机油中的含水量，延长发动机使用寿命。

Claims (10)

  1. 油气分离器，包括壳体总成(1)、底座总成(2)、转轴总成(4)、底隔板(3)和出气腔总成(6)，所述底座总成(2)的内腔为回油腔(21)，所述底隔板(3)设置于所述壳体总成(1)和所述底座总成(2)之间，所述转轴总成(4)设置有分离叶轮(41)的一端通过轴承(42)转动设置于所述底隔板(3)，所述转轴总成(4)设置有油气分离滤芯(43)的一端转动设置于所述壳体总成(1)的内腔，所述油气分离滤芯(43)的外侧壁与所述壳体总成(1)的内侧壁之间形成甩出通道(7)，所述出气腔总成(6)的底封板(61)与所述底隔板(3)之间形成空腔(8)，
    所述油气分离器还包括：
    存储槽(31)，以所述转轴总成(4)的轴线为中心环形凹设于所述底隔板(3)，所述存储槽(31)与所述甩出通道(7)连通；
    油水分离滤材(9)，设置于所述存储槽(31)内并将所述存储槽(31)分隔为储油腔(32)和储水腔(33)；
    排水口(10)，设置于所述存储槽(31)的侧壁并与所述储水腔(33)连通。
  2. 根据权利要求1所述的油气分离器，其中，所述存储槽(31)的相对两内壁面分别设置有第一台阶面(311)和第二台阶面(312)，所述油水分离滤材(9)贴附于所述第一台阶面(311)和所述第二台阶面(312)上。
  3. 根据权利要求2所述的油气分离器，其中，所述第一台阶面(311)相对所述存储槽(31)槽底的高度等于所述第二台阶面(312)相对所述存储槽(31)槽底的高度，且所述储油腔(32)的纵截面呈梯形结构。
  4. 根据权利要求2所述的油气分离器，其中，所述第一台阶面(311)相对所述存储槽(31)的槽底的高度大于所述第二台阶面(312)相对所述存储槽(31)的槽底的高度。
  5. 根据权利要求1所述的油气分离器，其中，所述存储槽(31)的槽口处设置有安装梁(34)，所述出气腔总成(6)的外周壁(62)凸设有安装部(63)，所述安装部(63)采用紧固件(64)安装在所述安装梁(34)上，所述出气腔总成(6)的外周壁(62)抵接于所述底隔板(3)的平端面(35)。
  6. 根据权利要求5所述的油气分离器，其中，所述出气腔总成(6)的外周壁(62)贯通开设有流入孔(65)，以使所述空腔(8)与所述储油腔(32)连通。
  7. 根据权利要求5所述的油气分离器，其中，所述出气腔总成(6)的底封板(61)凸设有多个支撑凸点(66)，多个所述支撑凸点(66)抵接于所述底隔板(3)的平端面(35)。
  8. 根据权利要求1-7任一项所述的油气分离器，其中，所述底隔板(3)凹设有 避让部(36)，所述避让部(36)与所述底座总成(2)的喷射通道(22)的外壁面相扣合。
  9. 根据权利要求1-7任一项所述的油气分离器，其中，所述底隔板(3)与所述壳体总成(1)的连接处设置有密封圈(37)。
  10. 发动机，包括如权利要求1-9任一项所述的油气分离器，壳体总成(1)上设置有进气口(11)和出气口(12)，位于所述壳体总成(1)内的出气腔总成(6)与所述出气口(12)连通，排水口(10)的一端伸出底座总成(2)，所述发动机的曲轴箱与所述进气口(11)连通，所述发动机的油底壳与所述底座总成(2)的回油口(23)连通。
PCT/CN2023/104594 2022-10-27 2023-06-30 油气分离器和发动机 WO2024087716A1 (zh)

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CN115596534A (zh) * 2022-10-27 2023-01-13 上海弗列加滤清器有限公司（Cn） 油气分离器和发动机
CN118403438B (zh) * 2024-06-24 2024-08-30 山西永有制冷科技有限公司 一种油气分离装置及分离方法

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CN111927595A (zh) * 2020-09-04 2020-11-13 上海弗列加滤清器有限公司 一种旋转式油气分离器
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CN101782007A (zh) * 2010-02-26 2010-07-21 重庆长安汽车股份有限公司 一种氢发动机曲轴箱通风系统的油水气分离装置
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