Gas-liquid separator housing structure, gas-liquid separator and assembly method

Abstract

The application discloses a shell structure of a gas-liquid separator, which comprises a first component and a second component. The first component comprises a first shell which is integrally formed and a first bearing which is arranged on the first shell. The first shell comprises a first outer shell and a first support seat which is arranged in the first outer shell. The first end of the first outer shell is provided with a mixture inlet, and the second end is an opening. The first support seat is connected with the first end and is opposite to the mixture inlet. The first bearing is arranged in the first support seat, and a plurality of channels are arranged around the first bearing on the first support seat. The second component comprises a second shell and a second bearing which is arranged on the second shell. The second shell is connected with the second end of the first outer shell, and a separation cavity is formed by the second shell and the first outer shell. The second bearing is opposite to the first bearing, and a rotor component is arranged between the second bearing and the first bearing. The application further discloses a gas-liquid separator and an assembling method of the gas-liquid separator. The gas-liquid separator has few parts, reduces the assembling process and lowers the production cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of gas-liquid separator, in particular to a shell structure of gas-liquid separator, gas-liquid separator and assembling method. BACKGROUND

[0002] The gas-liquid separator is a device for separating the mixture of fluids with different densities from each other, which can be used in the automobile engine system. In the automobile engine system, the gas-liquid separator is connected with the engine to separate the oil-gas mixture discharged from the engine into engine oil and gas, the engine oil flows back to the oil tank bottom of the engine for reuse, and the gas is pressurized by the turbocharger or introduced into the intake manifold of the engine and then returns to the combustion chamber of the engine.

[0003] Chinese patent CN102470378B discloses a gas purifier, which comprises a rotor housing, a turbine housing connected with the rotor housing, a top bearing unit provided at the inlet of the rotor housing, and a bottom bearing unit provided in the turbine housing and opposite to the top bearing unit. Specifically, the top bearing unit comprises a cap part, a bearing seat part, and a cage bearing provided between the cap part and the bearing seat part. Three slots are further provided on the top bearing unit for the inlet gas to enter the rotor housing. The top bearing unit needs to be fixed to the rotor housing by means of three threaded fasteners.

[0004] Therefore, the existing gas-liquid separator has the following problems: first, the number of parts is large, which increases the assembly steps and makes the assembly process complicated, and thus increases the raw material cost and labor cost. Second, the bearing seat for fixing the bearing is provided at the inlet of the gas-liquid separator, and in order to ensure the support strength, the number and size of the openings on the bearing seat are limited, which increases the resistance of the inlet gas, reduces the gas intake, and reduces the gas-liquid separation efficiency of the separator. Third, during use, the fasteners for fixing the bearing seat are prone to loosen due to vibration and high temperature generated during machine operation, which causes the bearing seat to loosen or fall off. SUMMARY

[0005] In order to overcome the defects in the prior art, the present application provides a shell structure of gas-liquid separator, gas-liquid separator and assembling method, which has fewer parts, reduces the assembly process, reduces the production cost, and can reduce the resistance to the mixed gas at the inlet, making the gas intake smoother, improving the gas intake of the gas-liquid separator, and improving the separation efficiency.

[0006] To achieve the above purpose, the technical scheme adopted by the present application is:

[0007] In a first aspect, a shell structure of a gas-liquid separator comprises:

[0008] The first component comprises a first housing and a first bearing arranged on the first housing; the first housing comprises a first shell and a first support seat arranged in the first shell; the first shell has a first end and a second end, the first end is provided with a mixture inlet, and the second end is open; the first support seat is connected to the first end and opposite to the mixture inlet; the first bearing is arranged in the first support seat, and a plurality of channels are arranged on the first support seat around the first bearing, the channels being used for connecting the mixture inlet and a separation cavity;

[0009] The second component comprises a second housing and a second bearing arranged on the second housing; the second housing is connected to the second end of the first shell, and the separation cavity is formed by the second housing and the first shell; the second bearing is opposite to the first bearing, and the second bearing and the first bearing are used for connecting a rotor component.

[0010] The first housing is designed as an integrated structure comprising the first shell and the first support seat, so that the first support seat has the functions of fixing the bearing and connecting the mixture inlet and the separation cavity, thereby reducing the process of fixing the bearing seat to the housing, reducing the types of parts in the installation process, and reducing the raw material cost and labor cost. In addition, since the first bearing seat and the first shell are an integrated structure, connection loosening caused by vibration or high temperature environment during use can be avoided, and the safety of use can be ensured.

[0011] Further, the second housing is an integrated structure comprising a second shell and a second support seat arranged in the second shell, and the second bearing is arranged in the second support seat. The second housing is also arranged as an integrated structure, which further reduces the number of parts, simplifies the assembly process, and improves the assembly efficiency.

[0012] Further, the first shell and / or the second shell are injection molded parts; when the first shell is an injection molded part, the first bearing is embedded in the first shell during the injection molding process of the first shell; when the second shell is an injection molded part, the second bearing is embedded in the second shell during the injection molding process of the second shell. Preferably, the first shell and the second shell are both injection molded parts, and the first bearing and the second bearing can be embedded during the molding process of the first shell and the second shell respectively, further reducing the installation process of the bearings, minimizing the number of parts of the gas-liquid separator, and minimizing the installation steps. Compared with the existing metal structure, the use of injection molded parts can further reduce production costs. The applicant has found that the use of injection molded parts can reduce the raw material cost by more than 10% compared with the metal structure. In combination with the reduction in the number of parts, the reduction in the use of connecting parts, and the reduction in the assembly steps, the production cost can be reduced by more than 30% compared with the original structure. Therefore, the shell structure of the gas-liquid separator in the present application can greatly improve the competitiveness of the product and expand the market share of the enterprise. It is more suitable for diesel engines and natural gas engines below 8L that require reduced production costs. Specifically, the injection molded part can be made of nylon material. Compared with the existing metal bearing seat, the first support seat integrated with nylon material on the first shell can reduce the influence of engine vibration on the bearing and prolong the service life of the bearing.

[0013] According to different use environments, the first shell and / or the second shell can also be made of metal parts. Designing the first shell or the second shell as an integrated metal structure reduces the types of parts and installation steps, while maintaining the original appearance and strength of the gas-liquid separator.

[0014] Further, the first shell is provided with a gas outlet at one end close to the second shell, and the second shell is provided with an oil outlet at the bottom, and the oil outlet and the mixture inlet are arranged along the center axis of the shell, so that the liquid flowing downward under the action of gravity can directly fall into the oil outlet, which is more conducive to the discharge of liquid from the separator.

[0015] Further, the first support seat includes an annular fixed part and a plurality of support plates spaced around the annular fixed part; the annular fixed part is opposite to the mixture inlet and located on the side of the mixture inlet facing the center of the separation cavity, for embedding the first bearing; one end of the support plate is connected to the annular fixed part, and the other end is connected to the edge of the mixture inlet, and is inclined; the adjacent support plates form the channel.

[0016] The number of passages can be set according to the estimation of the gas inlet amount in the gas-liquid separator environment. For example, a plurality of support plates can be arranged at equal intervals on the circumferential side of the fixed part, and twelve passages can be formed on the first support seat. In the existing structure, passages are arranged on the plane of the bearing seat. In order to ensure the strength of the bearing seat, the number and size of the passages are limited, and therefore the number of passages is generally 3-4. By connecting the fixed part and the first shell with the support plate, the passages can be extended from the fixed part to the edge of the mixture inlet, thereby maximizing the passage size. The strength of the support plate can be improved by the material properties, and the thickness and number of the support plate can be reduced, thereby further expanding the passage size. Compared with the existing structure of the bearing seat, the passages formed between the support plates can expand the passage size, reduce the blockage of the mixture into the separation chamber, make the gas inlet passage smoother, reduce the pressure loss, and improve the performance of the gas-liquid separator.

[0017] Further preferably, the passage gradually expands from one end facing the mixture inlet to one end away from the mixture inlet, guides the mixture, and facilitates the diffusion of the mixture in the separation chamber.

[0018] In a second aspect, a gas-liquid separator includes the shell structure of the above-mentioned gas-liquid separator, an inlet pipe connected to the mixture inlet at the top of the shell, an outlet pipe connected to the gas outlet near the bottom of the shell, and an oil return pipe connected to the oil outlet at the bottom of the shell. The oil return pipe is arranged in the vertical direction, and the oil return pipe coincides with the center axis of the mixture inlet.

[0019] In a third aspect, an assembly method of the above-mentioned gas-liquid separator includes the following steps:

[0020] Combining the first bearing with the first shell to form a first assembly;

[0021] Combining the second bearing with the second shell to form a second assembly;

[0022] Assembling the second assembly and the rotor part into a rotor assembly;

[0023] Assembling the rotor assembly and the first assembly into a separator assembly;

[0024] Assembling the inlet pipe, the outlet pipe, and the oil return pipe with the separator assembly into a gas-liquid separator.

[0025] Further, combining the first bearing with the first shell to form a first assembly; combining the second bearing with the second shell to form a second assembly; includes:

[0026] The first bearing is pre-embedded in the first shell during the injection molding process of the first shell to form the first assembly;

[0027] The second bearing is embedded in the second shell during the injection molding process of the second shell to form the second assembly.

[0028] Thanks to the above technical solution, the present application has the following advantages compared with the prior art:

[0029] 1. The first shell is designed as an integrally formed structure comprising a first housing and a first support seat, so that the first support seat has the functions of fixing the bearing and connecting the mixture inlet and the separation cavity, thereby reducing the process of fixing the bearing seat to the shell, reducing the types of parts during installation, reducing the cost of raw materials and labor, and ensuring the safety during use and reducing the failure rate of the separator.

[0030] 2. The second shell is also designed as an integrally formed structure, which further reduces the number of parts, simplifies the assembly process, improves the assembly efficiency, and reduces the oil leakage at the second support seat.

[0031] 3. The first shell and / or the second shell are injection molded parts, which can reduce the production cost by about 30% or more compared with the existing metal structure, improve the competitiveness of the product, and expand the market share of the enterprise.

[0032] 4. The first support seat is integrated on the first housing, and both are made of nylon material, which can reduce the transmission of engine vibration to the bearing, thereby prolonging the service life of the bearing.

[0033] 5. In the existing structure, the passages are provided on the bearing seat, and the number and size of the passages are limited. The support plate connects the fixing part and the first housing, so that the passages extend from the fixing part to the edge of the mixture inlet, maximize the size of the passages, make the air inlet passage more smooth, reduce the pressure loss, improve the air inlet capacity of the separator, and improve the performance of the separator.

[0034] In order to make the above and other objects, features and advantages of the present application more apparent, the following will describe a preferred embodiment, and the accompanying drawings will be described in detail as follows. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0036] Figure 1is a schematic diagram of a shell structure in an embodiment of the present application;

[0037] Figure 2 is a cross-sectional view of a shell in an embodiment of the present application;

[0038] Figure 3 is a schematic diagram of a combination of a first shell and a second shell in an embodiment of the present application;

[0039] Figure 4 is a schematic diagram of a first assembly in an embodiment of the present application Figure 1 ;

[0040] Figure 5 is a schematic diagram of a first assembly in an embodiment of the present application Figure 2 ;

[0041] Figure 6 is a bottom view of a first assembly in an embodiment of the present application;

[0042] Figure 7 is Figure 6 a cross-sectional view of A-A in FIG. 1;

[0043] Figure 8 is a cross-sectional view of a first shell in an embodiment of the present application;

[0044] Figure 9 is a schematic diagram of a second assembly in an embodiment of the present application;

[0045] Figure 10 is a schematic diagram of a second shell in an embodiment of the present application;

[0046] Figure 11 is a schematic diagram of a gas-liquid separator structure in an embodiment of the present application;

[0047] Figure 12 is a cross-sectional view of a gas-liquid separator in an embodiment of the present application.

[0048] Reference signs of the above drawings: 1, first assembly; 11, first shell; 111, first outer shell; 112, first support seat; 1121, fixed part; 1122, support plate; 1123, passage; 12, first bearing; 101, mixture inlet; 102, gas outlet; 103, oil outlet; 104, opening; 2, second assembly; 21, second shell; 211, second outer shell; 212, second support seat; 22, second bearing; 3, gas inlet pipe; 4, gas outlet pipe; 5, oil return pipe; 6, rotor component. DETAILED DESCRIPTION

[0049] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0050] Embodiment one: see Figures 1-10 As shown in FIG. 1, a shell structure of a gas-liquid separator includes a first assembly 1 and a second assembly 2.

[0051] See Figures 4-8 As shown in FIG. 1, the first assembly 1 includes a first shell 11 integrally formed and a first bearing 12 arranged on the first shell 11. The first shell 11 includes a first outer shell 111 and a first support seat 112 arranged in the first outer shell 111; the first outer shell 111 has a first end and a second end, the first end is provided with a mixture inlet 101, and the second end is an opening 104; the first support seat 112 is connected to the first end and opposite to the mixture inlet 101, and the first bearing 12 is arranged in the first support seat 112, a plurality of passages 1123 are arranged around the first bearing 12 on the first support seat 112, and the passages 1123 are used to connect the mixture inlet 101 and a separation cavity.

[0052] The first shell 11 is designed as an integrally formed structure including the first outer shell 111 and the first support seat 112, so that the first support seat 112 has the functions of fixing the bearing and connecting the mixture inlet 101 and the separation cavity, thereby reducing the process of fixing the bearing seat to the shell, reducing the types of parts in the installation process, and reducing the raw material cost and labor cost. Moreover, since the first bearing 12 seat and the first outer shell 111 are an integrally formed structure, connection loosening caused by vibration or high temperature environment during use can be avoided, and the safety of use is ensured.

[0053] The first shell 11 is an injection molding part. Specifically, the first shell 11 is made of nylon material. The first bearing 12 is pre-embedded in the first shell 11 during the injection molding process of the first shell 11, the first bearing 12 is arranged in the first shell 11 by the pre-embedding mode, which reduces the subsequent assembly steps, ensures firm and stable, and at the same time can reduce the vibration from the engine to the bearing, thereby prolonging the service life of the bearing.

[0054] See Figure 1 , 2, 9, 10, the second assembly 2 includes a second housing 21 and a second bearing 22 provided on the second housing 21; the second housing 21 is connected with the second end of the first shell 111, and the second housing 21 and the first shell 111 form the separation cavity, the second bearing 22 is opposite to the first bearing 12, and the second bearing 22 and the first bearing 12 are used for connecting the rotor part 6.

[0055] Referring to Figure 1 , 2 As shown in the drawings, the first housing 11 is provided with an air outlet 102 at one end close to the second housing 21, and the bottom of the second housing 21 is provided with an oil outlet 103, and the oil outlet 103 is arranged along the central axis of the housing with the mixture inlet 101.

[0056] Referring to Figure 4 , 5 As shown in the drawings, the first support seat 112 includes an annular fixed part 1121 and a plurality of support plates 1122 arranged at intervals around the annular fixed part 1121; the annular fixed part 1121 is opposite to the mixture inlet 101 and located on the side of the mixture inlet 101 facing the center of the separation cavity, and is used for embedding the first bearing 12; one end of the support plate 1122 is connected with the annular fixed part 1121, and the other end is connected with the edge of the mixture inlet 101, and is arranged obliquely; the adjacent support plates 1122 form the channel 1123. By expanding the size of the channel 1123, the air inlet channel 1123 is more smooth, the pressure loss is small, the air inlet amount of the separator is improved, and the performance of the separator is improved. The channel 1123 gradually expands from one end facing the mixture inlet 101 to one end away from the mixture inlet 101, and guides the mixture, which is beneficial to the diffusion of the mixture in the separation cavity.

[0057] Embodiment two: a shell structure of a gas-liquid separator, which is similar to the shell structure of the gas-liquid separator in embodiment one, and the difference lies in that: the second housing 21 is also an integral molding structure, which includes a second shell 211 and a second support seat 212 provided in the second shell 211, and the second bearing 22 is arranged in the second support seat 212.

[0058] The second housing 21 is an injection molding piece made of nylon material, and when the second housing 21 is an injection molding piece, the second bearing 22 is pre-embedded in the second housing 21 during the injection molding process of the second housing 21.

[0059] Meanwhile, the second shell 21 is also provided as an integral molding structure, further reducing the number of parts, simplifying the assembly process, and improving assembly efficiency. Compared with metal structures, injection molding parts can reduce raw material costs by more than 10%. By reducing the number of types of parts, reducing the use of connecting parts, and reducing assembly steps, the production cost can be reduced by more than 30% compared with the original structure. Therefore, the shell structure of the gas-liquid separator in the present application can greatly improve the competitiveness of the product and expand the market share of the enterprise. It is more suitable for diesel and natural gas engines below 8L that require reduced production costs.

[0060] Embodiment three: a shell structure of a gas-liquid separator, which is similar to the shell structure of the gas-liquid separator in embodiment two, except that the second shell 21 is a metal part, which can meet the needs of different use environments.

[0061] Referring to Figure 11 , 12 As shown in FIG. 5, a gas-liquid separator includes the shell structure of the gas-liquid separator, an air inlet pipe 3 connected to the mixture inlet 101 at the top of the shell, an air outlet pipe 4 connected to the air outlet 102 near the bottom of the side of the shell, and an oil return pipe 5 connected to the oil outlet 103 at the bottom of the shell. The oil return pipe 5 is arranged in the vertical direction, and the oil return pipe 5 coincides with the center axis of the mixture inlet 101.

[0062] An assembly method of the above-mentioned gas-liquid separator, comprising the following steps:

[0063] Combining the first bearing 12 with the first shell 11 to form a first assembly 1;

[0064] Combining the second bearing 22 with the second shell 21 to form a second assembly 2;

[0065] Assembling the second assembly 2 and the rotor part 6 into a rotor assembly;

[0066] Assembling the rotor assembly and the first assembly 1 into a separator assembly;

[0067] Assembling the air inlet pipe 3, the air outlet pipe 4, and the oil return pipe 5 with the separator assembly into a gas-liquid separator.

[0068] Among them, the first bearing 12 is pre-embedded in the first shell 11 during the injection molding process of the first shell 11, forming the first assembly 1;

[0069] The second bearing 22 is pre-embedded in the second shell 21 during the injection molding process of the second shell 21, forming the second assembly 2.

[0070] The principles and implementation manners of the present application are described by using specific examples, and the above examples are only used for helping to understand the method of the present application and its core idea; meanwhile, for the general technical personnel in the art, according to the idea of the present application, the specific implementation manners and application ranges will be changed, and the above description should not be understood as the limitation of the present application.

Claims

1. A housing structure of a gas-liquid separator, characterized by, The application relates to a gas-liquid separator, which comprises the following components. The first component comprises a first shell and a first bearing arranged on the first shell; the first shell comprises a first outer shell and a first support arranged in the first outer shell; the first outer shell has a first end and a second end, the first end is provided with a mixture inlet, and the second end is open; the first support is connected to the first end and opposite to the mixture inlet; the first bearing is arranged in the first support, a plurality of channels are arranged around the first bearing on the first support, and the channels are used for connecting the mixture inlet and a separation cavity; the first support comprises a ring-shaped fixing part and a plurality of support plates which are arranged at intervals around the ring-shaped fixing part; the ring-shaped fixing part is opposite to the mixture inlet and located on a side of the mixture inlet which faces the center of the separation cavity, and is used for embedding the first bearing; one end of the support plate is connected to the ring-shaped fixing part, and the other end is connected to the edge of the mixture inlet and is arranged in an inclined mode; the channels are formed between adjacent support plates; the channels gradually expand from one end which faces the mixture inlet to the other end which is away from the mixture inlet; The second component comprises a second shell and a second bearing arranged on the second shell; the second shell is connected to the second end of the first outer shell, and the separation cavity is formed by the second shell and the first outer shell; the second bearing is opposite to the first bearing, and the second bearing and the first bearing are used for connecting a rotor part.

2. The housing structure of a gas-liquid separator according to claim 1, characterized by, The second shell is an integrated structure, which comprises a second outer shell and a second support arranged in the second outer shell, and the second bearing is arranged in the second support.

3. The housing structure of a gas-liquid separator according to claim 1 or 2, characterized by, The first shell and / or the second shell are injection molded parts; when the first shell is an injection molded part, the first bearing is pre-embedded in the first shell during the injection molding process of the first shell; when the second shell is an injection molded part, the second bearing is pre-embedded in the second shell during the injection molding process of the second shell.

4. The housing structure of a gas-liquid separator according to claim 1, characterized by, The first shell and / or the second shell are metal parts.

5. The housing structure of a gas-liquid separator according to claim 1, wherein The first shell is provided with an air outlet at one end which is close to the second shell, the bottom of the second shell is provided with an oil outlet, and the oil outlet is arranged along the central axis of the shell and is opposite to the mixture inlet.

6. A gas-liquid separator characterized by, The application further discloses a gas-liquid separator which comprises the shell structure of the gas-liquid separator, an air inlet pipe connected to the mixture inlet at the top of the shell, an air outlet pipe connected to the air outlet at the bottom of the shell, and an oil return pipe connected to the oil outlet at the bottom of the shell; the oil return pipe is arranged in a vertical direction and coincides with the central axis of the mixture inlet.

7. A method of assembling a gas-liquid separator as claimed in claim 6, characterized in that: The application further discloses a method for manufacturing the gas-liquid separator, which comprises the following steps. Combining the first bearing and the first shell to form the first component; Combining the second bearing and the second shell to form the second component; Assembling the second component and the rotor part to form a rotor assembly; Assembling the rotor assembly and the first component to form a separator assembly; Assembling the air inlet pipe, the air outlet pipe and the oil return pipe with the separator assembly to form the gas-liquid separator.

8. The method of assembling a gas-liquid separator of claim 7, wherein: Combining the first bearing and the first shell to form the first component; Combining the second bearing and the second shell to form the second component; The first bearing is pre-embedded in the first shell during the injection molding process of the first shell to form the first assembly; The second bearing is pre-embedded in the second shell during the injection molding process of the second shell to form the second assembly.

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