A centrifugal disc and a gas-liquid separator

Abstract

The application provides a centrifugal disc and a gas-liquid separator. The centrifugal disc is used for gas-liquid separation of a gas-liquid mixture and comprises a bottom surface and a disc surface connected with the bottom surface. The bottom surface comprises an inlet through which the gas-liquid mixture passes. The disc surface extends around the bottom surface and is inclined and extends in a horn shape away from the bottom surface. At least one side surface of the disc surface is provided with a plurality of guide portions extending in a radial direction and capable of separating the gas-liquid mixture. The guide portions are arranged in a continuous undulating structure in the circumferential direction on the side surface of the disc surface. By arranging the plurality of guide portions extending in the radial direction on at least one side surface of the disc surface, the separated liquid can be prevented from moving in the circumferential direction of the disc surface, and the separation efficiency of the gas-liquid mixture is greatly improved.

Description

Technical Field

[0001] This application relates to the field of gas-liquid separation technology, and more specifically, to a centrifugal disc and a gas-liquid separator. Background Technology

[0002] With the development of technology, there are more and more scenarios that require the use of gas-liquid separation technology. For example, during the compression and ignition process of a current fuel engine, a small portion of the high-pressure combustible mixture and combustion gases in the cylinder will enter the crankcase through the gap between the cylinder and the piston, forming a gas-liquid mixture containing oil mist, air, water vapor, and exhaust gas. This gas-liquid mixture accumulates in the crankcase, causing excessively high pressure inside the crankcase, which not only affects the engine's operating conditions but also damages the crankcase seal.

[0003] In order to avoid and reduce the impact of the gas-liquid mixture in the crankcase on the operating conditions of the fuel engine, it is necessary to separate the gas-liquid mixture from the crankcase. Summary of the Invention

[0004] This application provides a centrifugal disc and a gas-liquid separator, which can prevent the separated liquid from moving circumferentially along the disc surface, thus greatly improving the separation efficiency of gas-liquid mixtures.

[0005] Specifically, this application is implemented through the following technical solution:

[0006] This application provides a centrifuge disc for gas-liquid separation of a gas-liquid mixture, comprising a bottom surface and a disc surface connected to the bottom surface, the bottom surface including an inlet for the gas-liquid mixture to pass through, and the disc surface extending obliquely in a funnel shape around the bottom surface and away from the bottom surface; wherein...

[0007] The disk surface has at least one side surface provided with a plurality of radially extending guide portions capable of separating gas-liquid mixtures, the guide portions being arranged in a continuous undulating structure along the circumferential direction on the side surface of the disk surface.

[0008] Optionally, when multiple centrifugal discs are stacked together, the guide portions of each centrifugal disc are stacked on top of each other, forming multiple circumferentially isolated gaps between adjacent centrifugal discs.

[0009] Optionally, the disc surface includes a first surface and a second surface facing away from each other, and the guide portion is respectively disposed on the first surface and the second surface; and

[0010] The guide portions provided on the first surface and the guide portions provided on the second surface are arranged alternately along the circumference of the disk surface.

[0011] Optionally, one end of the guide extends to the inner edge of the disk surface, and the other end extends to the outer edge of the disk surface, and the continuous undulating structure formed by the guide in the circumference of the disk surface is sawtooth-shaped.

[0012] Optionally, the guide portion is a recessed structure formed by indentation from at least one side surface of the disk; the guide portion includes a guide surface, and the inner wall of the recessed structure forms the guide surface.

[0013] Optionally, the bottom surface is provided with mounting holes for mounting the drive component and multiple connecting parts; the multiple connecting parts extend radially from the mounting holes to connect with the disk surface, and a hollow area is provided between two adjacent connecting parts to form an inlet for the gas-liquid mixture to pass through.

[0014] Optionally, a positioning hole is provided on the bottom surface at the position between the connecting part and the mounting hole.

[0015] Optionally, the bottom surface further includes a plurality of limiting grooves, which are spaced apart circumferentially along the bottom surface and communicate with the drive component mounting hole.

[0016] This application also provides a gas-liquid separator, comprising: a plurality of centrifugal discs as described in any of the above.

[0017] Optionally, the guide portions of the plurality of centrifugal discs have the same shape and size.

[0018] The technical solution provided in this application can achieve the following beneficial effects:

[0019] This application provides a centrifugal disc and a gas-liquid separator, including a bottom surface and a disc surface connected to the bottom surface. The bottom surface includes an inlet for a gas-liquid mixture to pass through. The disc surface extends obliquely in a funnel shape around the bottom surface and away from the bottom surface. At least one side surface of the disc surface is provided with a plurality of radially extending guide portions capable of separating the gas-liquid mixture. The guide portions are arranged in a continuous undulating structure along the circumferential direction on the side surface of the disc surface. This prevents the separated liquid from moving along the circumferential direction of the disc surface, greatly improving the separation efficiency of the gas-liquid mixture. Attached Figure Description

[0020] Figure 1 This is a schematic diagram illustrating a structure in which multiple centrifugal discs are stacked together, as shown in an exemplary embodiment of this application.

[0021] Figure 2 This is a schematic diagram of another structure in which multiple centrifugal discs are stacked together, as shown in an exemplary embodiment of this application.

[0022] Figure 3This is a partial structural diagram illustrating multiple centrifugal discs stacked together, as shown in an exemplary embodiment of this application.

[0023] Figure 4 This is a schematic diagram of the structure of a centrifugal disc shown in an exemplary embodiment of this application. Detailed Implementation

[0024] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments are merely illustrative of the concept of this application and do not represent all embodiments of the concept of this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the concept of this application.

[0025] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the application. Unless otherwise defined, the technical or scientific terms used in this application should be understood in their ordinary sense by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the presence of at least one. "A plurality" or "several" indicates two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and / or "upper," "top," "bottom," etc., are for ease of description only and are not limited to a location or spatial orientation. The terms "comprising" or "including," etc., mean that the elements or objects preceding "comprising" or "including" cover the elements or objects listed after "comprising" or "including" and their equivalent elements or objects, and other elements or objects are not excluded in this application. The word “connection” or “link” is not limited to physical or mechanical connections, but can also include electrical connections, whether direct or indirect.

[0026] Please refer to Figures 1 to 3 This application provides a centrifugal disc 100 for gas-liquid separation of a gas-liquid mixture, including a bottom surface 10 and a disc surface 20 connected to the bottom surface 10. The bottom surface 10 includes an inlet through which the gas-liquid mixture passes. The disc surface 20 extends in a funnel shape around the bottom surface 10 and in a direction away from the bottom surface 10. At least one side surface of the disc surface 20 is provided with a plurality of radially extending guide portions 21 capable of separating the gas-liquid mixture. The guide portions 21 are arranged in a continuous undulating structure along the circumferential direction on the side surface of the disc surface 20.

[0027] In the preferred embodiment of using the centrifugal discs 100, multiple centrifugal discs 100 are stacked together, with a gap 22 formed between the disc surfaces 20 of adjacent discs 100. When the centrifugal discs 100 rotate, the gas-liquid mixture flows into the discs 100 through the inlet of the bottom surface 10. The liquid in the gas-liquid mixture gradually deposits on the surface of the disc surface 20 due to centrifugal force. By providing multiple radially extending guide portions 21 on at least one side of the disc surface 20, the gap 22 can be radially separated, allowing the liquid deposited on the surface of the disc surface 20 to flow radially outward and be ejected, preventing the separated liquid from moving circumferentially along the disc surface 20, thus greatly improving the separation efficiency of the gas-liquid mixture. Meanwhile, the gas in the gas-liquid mixture flows out through the inlet of the bottom surface 10 of the multiple centrifugal discs 100 into the exhaust pipe of the oil-gas separator and is discharged, thereby achieving gas-liquid separation.

[0028] It should be noted that the "gas-liquid mixture" mentioned in this article can be a mixture of oily liquid and gas, or a mixture of water and gas, and of course, the composition of a gas-liquid mixture is not limited to these. In addition, "liquid" can be either tiny liquid particles, i.e., droplets, or a liquid with a certain volume that can flow.

[0029] Please continue to refer to this. Figure 3 In one embodiment, when multiple centrifuge discs 100 are stacked together, the guide portions 21 of each centrifuge disc 100 are stacked on top of each other, forming multiple circumferentially isolated gaps 22 between adjacent centrifuge discs 100. Thus, the guide portions 21 not only support the centrifuge discs but also separate the gaps 22 between adjacent centrifuge discs 100 circumferentially, dividing them into multiple small gaps arranged sequentially and relatively independently in the circumferential direction, preventing the liquid from moving around the disc surface 20 in a complete circumference and affecting the separation efficiency.

[0030] In one embodiment, the guide portion 21 is a recessed structure formed by indentation from at least one side surface of the disc surface 20. The guide portion includes a guide surface, and the inner wall of the recessed structure forms the guide surface. This allows liquid on the surface of the disc surface 20 to flow radially outward along the disc surface 20. Furthermore, since the centrifugal disc itself is relatively thin, if the guide portion on the disc surface 20 is simply a strip-shaped rib, the rib is prone to localized breakage due to thermal stress after the centrifugal disc is injection molded, thereby weakening or even eliminating its ability to guide the liquid outward. Therefore, by setting the guide portion 21 as a recessed structure, the heat dissipation area can be increased after injection molding, preventing breakage of the guide portion 21 due to overall deformation caused by thermal stress, thus enhancing the separation effect. The inner wall of the recessed structure includes two inner sidewalls extending radially along the disc surface 20 and an inner bottom wall located between and connected to the two inner sidewalls. In one embodiment, the recess width of the pit structure on the side near the bottom surface 10 is smaller than the recess width of the recess on the side away from the bottom surface 10. Thus, when the pit structures of multiple centrifugal discs are stacked together, a gap that gradually widens radially outward along the disc surface 20 can be formed, ensuring that liquid deposited on the surface of the disc surface 20 can be smoothly ejected.

[0031] Please refer to Figure 1 and Figure 4 In a preferred embodiment, the recessed structure is either a straight line or an arc on the radially extending inner wall of the disc 20. When the radially extending inner wall of the disc 20 is a straight line, it ensures a simpler appearance for the centrifugal disc. When the radially extending inner wall of the disc 20 is an arc, the convex direction B of the arc should be opposite to the rotation direction A of the centrifugal disc 100. The arc-shaped design avoids ineffective separation areas at the two ends of the radially extending disc 20, greatly improving separation efficiency.

[0032] Please continue to refer to this. Figure 3In one embodiment, the disc surface 20 includes a first surface 201 and a second surface 202 facing away from each other, and the guide portion 21 is respectively provided on the first surface 201 and the second surface 202; and the guide portion 21 provided on the first surface 201 and the guide portion 21 provided on the second surface 202 are arranged alternately along the circumference of the disc surface 20. Thus, by providing guide portions 21 on both sides of the disc surface 20, gaps 22 for liquid to pass through can be formed on both sides of the disc surface 20 when multiple centrifugal discs 100 are stacked. Since the guide portions 21 are arranged alternately along the circumference of the disc surface 20, the gaps 22 formed on both sides of the disc surface 20 are also arranged alternately along the circumference of the disc surface 20, avoiding interference between adjacent gaps 22 during the separation process. In one embodiment, both the first surface 201 and the second surface 202 of the disc surface 20 are recessed inward to form multiple pit structures. The multiple pit structures located on the first surface 201 and the multiple pit structures located on the second surface 202 are arranged alternately along the circumference of the disc surface 20. When multiple centrifuge discs 100 are stacked, the multiple pit structures arranged alternately along the circumference of the disc surface 20 can create a height difference between two adjacent gaps 22. Thus, during the rotation of the centrifuge discs 100, even if the liquid in a certain gap is thrown out of the gap during centrifugation, it is difficult for it to enter another gap adjacent to that gap, thereby reducing the possibility of interference and improving separation efficiency.

[0033] In one embodiment, one end of the guide portion 21 extends to the inner edge 204 of the disk surface, and the other end extends to the outer edge 203 of the disk surface 20. The guide portion 21 forms a continuous undulating structure around the disk surface 20 in a "serrated" shape. This prevents the liquid in the gap 22 from being thrown out to the outside of the guide portion 21 during centrifugation, greatly improving the separation efficiency.

[0034] It should be noted that "serrated" specifically refers to the angle that can be formed between the inner wall of the recessed structure of the guide part 21 and the first surface 201 or the second surface 202 of the centrifugal disc. In other words, the connection between the inner wall of the recessed structure of the guide part 21 and the first surface 201 or the second surface 202 of the centrifugal disc is not a smooth transition, which is what is defined as "serrated" here. "Inner edge" is the edge of the disc surface closer to the bottom surface, and "outer edge" is the edge of the disc surface farther from the bottom surface.

[0035] Please refer to Figure 1 and Figure 2In one embodiment, the bottom surface 10 is provided with mounting holes 12 for mounting a drive component and a plurality of connecting portions 11; the plurality of connecting portions 11 extend radially from the mounting holes 12 to connect with the disc surface 20, and a hollow area 13 is provided between two adjacent connecting portions 11 to form an inlet for the gas-liquid mixture to pass through. This ensures that the gas-liquid mixture flows into the centrifugal disc from the hollow area 13. In one embodiment, the connection between the connecting portion 11 and the disc surface 20 is a smooth transition. This enhances the overall aesthetics of the separation disc.

[0036] Please refer to Figure 1 In one embodiment, the connecting portion 11 is a horizontally extending planar structure. When multiple centrifugal discs are stacked together, the guide portion 21 of the disc surface 20 provides support between the centrifugal discs 100. Please refer to... Figure 2 In another embodiment, the portion of the connecting part 11 located in the hollowed-out area is stepped, used to support the stacking of multiple centrifugal discs 100 and to create gaps 22 between the disc surfaces 20 of each centrifugal disc 100. In other words, the portion of the connecting part 11 located in the hollowed-out area protrudes outward from the bottom surface 10, and the protruding portion is arranged in a stepped manner along the axial direction of the bottom surface 10. When multiple centrifugal discs are stacked together, the stepped connecting part 11 can provide support, ensuring that the bottom surfaces 10 of two adjacent centrifugal discs do not move relative to each other during stacking, making the stacking state of the centrifugal discs more reliable.

[0037] Please continue to refer to this. Figure 1 and Figure 2In one embodiment, the bottom surface 10 is provided with a positioning hole 14 located between the connecting portion 11 and the mounting hole 12. When multiple centrifugal discs are stacked together, in order to ensure that the centrifugal discs are as symmetrical as possible about the drive shaft, thereby achieving better dynamic performance, the multiple centrifugal discs are not randomly assembled when assembled onto the rotating shaft. Instead, the positioning holes 14 on each centrifugal disc are arranged at certain angular intervals with reference to the positioning holes 14, so that after the multiple centrifugal discs are stacked, the weight of the centrifugal discs on opposite sides of the drive shaft is consistent. It should be noted that the drive component can be a drive shaft or similar structure. In one embodiment, the bottom surface 10 also includes multiple limiting grooves 15, which are spaced apart circumferentially along the bottom surface 10 and communicate with the drive component mounting hole 12. These grooves are used to limit the circumferential position between the centrifugal discs and the drive shaft. In one embodiment, the drive shaft is provided with multiple limiting protrusions spaced apart circumferentially, and each limiting protrusion is inserted into the limiting groove 15. On the one hand, when multiple centrifugal discs 100 are stacked, the guide parts 21 can be stacked together accordingly. On the other hand, the discs can be driven to rotate by the drive shaft, and relative displacement between the centrifugal discs and the drive shaft in the rotational direction can be avoided. In other words, the drive shaft can be a non-circular structure, and the shape of the mounting port matches the shape of the drive shaft. For example, the drive shaft can be any non-circular structure such as rectangular, semi-circular, or cross-shaped.

[0038] This application also provides a gas-liquid separator, comprising a plurality of centrifugal discs 100 as described above. In one embodiment, the gas-liquid separator is an oil-gas separator for separating an oil-gas mixture that has entered the crankcase. The plurality of centrifugal discs 100 are stacked within the stationary housing of an oil-gas separator used to purify the oil-gas mixture in the crankcase of an internal combustion engine. In another embodiment, the gas-liquid separator is a hydrogen-water separator for separating a hydrogen-water mixture in a fuel cell system. Admittedly, the application of the gas-liquid separator is not limited to these; any system requiring gas-liquid separation can utilize the gas-liquid separator of this application.

[0039] In one embodiment, the guide portions 21 of the plurality of centrifuge discs 100 are of the same shape and size. When the plurality of centrifuge discs 100 are stacked, it is possible to ensure that a channel for liquid flow is formed within the gap 22 formed between the centrifuge discs 100.

[0040] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A centrifugal disc for gas-liquid separation of a gas-liquid mixture, comprising a bottom surface and a disc surface connected to the bottom surface, the bottom surface including an inlet through which the gas-liquid mixture passes, the disc surface extending obliquely in a funnel shape around the bottom surface and away from the bottom surface; characterized in that: At least one side surface of the disk is provided with a plurality of radially extending guide portions capable of separating gas-liquid mixtures, and the guide portions are arranged in a continuous undulating structure along the circumferential direction on the side surface of the disk. The disc surface includes a first surface and a second surface facing away from each other, and the guide portion is respectively disposed on the first surface and the second surface; The guide portions provided on the first surface and the guide portions provided on the second surface are arranged alternately along the circumference of the disk surface and have the same width. When multiple centrifugal discs are stacked together, the guide portions of each centrifugal disc are stacked on top of each other, and multiple circumferentially isolated gaps are formed between two adjacent centrifugal discs. The guide portion is a recessed structure formed by indentation from at least one side surface of the disk; the guide portion includes a guide surface, and the inner wall of the recessed structure forms the guide surface; The inner wall of the recess structure includes two inner sidewalls extending radially along the disk surface and an inner bottom wall located between and connected to the two inner sidewalls. The bottom surface is provided with mounting holes for mounting the drive component and multiple connecting parts. The multiple connecting parts extend radially from the mounting holes to connect with the disk surface, and a hollow area is provided between two adjacent connecting parts to form an inlet for the gas-liquid mixture to pass through. The connection between the connecting part and the disk surface is a smooth transition. The bottom surface also includes multiple limiting grooves, which are spaced apart circumferentially along the bottom surface and communicate with the mounting holes.

2. The centrifugal disc according to claim 1, characterized in that: One end of the guide extends to the inner edge of the disk surface, and the other end extends to the outer edge of the disk surface. The continuous undulating structure formed by the guide in the circumference of the disk surface is sawtooth-shaped.

3. The centrifugal disc according to claim 1, characterized in that: The bottom surface is provided with a positioning hole located between the connecting part and the mounting hole.

4. A gas-liquid separator, characterized in that, include: Multiple centrifugal discs as described in any one of claims 1 to 3.

5. A gas-liquid separator according to claim 4, characterized in that: The guide sections of the plurality of centrifugal discs are identical in shape and size.

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