Air filter shell, steady flow air filter and air inlet system
By installing a steady flow component with a mesh at the air outlet of the air filter housing, the problem of poor gas flow inside the air filter is solved, the uniformity of the gas flow field is achieved, and the performance and service life of the engine are improved.
Patent Information
- Application Number
- CN202421036054.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-05-13
AI Technical Summary
The special-shaped design of the existing air filter in the front chamber of the engine leads to poor gas flow, affecting the data reading of the air flow sensor, and thus affecting the engine's oil and gas mixing ratio, resulting in insufficient combustion, power drop and engine carbon accumulation problems.
An air filter housing is designed, including a lower housing, an upper housing and a steady flow component. The flow component is installed at the air outlet and a mesh with several mesh holes. The airflow is dispersed through these mesh holes to improve the uniformity of the gas flow field inside the air filter.
Through the design of the steady flow component, the uniformity of the gas flow field inside the air filter is improved, the smooth flow of gas is ensured, and the data accuracy of the air flow sensor is improved, thereby optimizing the engine's oil and gas mixing ratio and improving the engine's performance and service life.
Smart Images
Figure CN222558639U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of air intake systems or air purification systems, and relates to an air filter housing, a steady-flow air filter and an intake system. Background Art
[0002] Most of the mainstream models of existing cars use turbocharged engines or hybrid models, extended-range models, etc. (PHEV models, REV models). Since such models have too many multifunctional components (both engines and motors) arranged in the front compartment of the engine, the space in the front compartment of the engine is cramped, which poses a great challenge to the existing air filter layout, resulting in the air filter usually adopting a special-shaped design. Due to the special-shaped design, the space through which the gas flows is uneven, which easily leads to the problem of poor air flow inside the air filter, especially at the air filter outlet. If the gas does not flow smoothly, it will cause the air flow sensor (air flow sensor is also called air flow meter (AFM), which is used to measure the amount of air inhaled by the engine) arranged at the mouth of the air filter to read data errors, thereby affecting the oil-gas mixture ratio of the whole vehicle, resulting in incomplete engine combustion, engine power reduction, insufficient power, and the engine is also prone to carbon accumulation, affecting the service life of the engine. Summary of the invention
[0003] The utility model aims to provide an air filter housing, a steady-flow air filter and an air intake system to improve the uniformity of the flow field of the air inside the housing.
[0004] The utility model provides an air filter housing, which has the following characteristics: it comprises: a lower housing, which is provided with an air inlet, an upper housing, which is installed on the lower housing and is provided with an air outlet, and a flow stabilizing component, which is fixed at the air outlet and is used for stabilizing the airflow to the air outlet; wherein the flow stabilizing component has a plurality of mesh holes for gas to pass through.
[0005] The air filter housing provided by the utility model may also have the following features: wherein the flow stabilizing component includes: a mesh body having a plurality of mesh holes, and a fixing portion for fixing the mesh body at the air outlet.
[0006] The air filter housing provided by the utility model may also have the following features: wherein the fixing portion is a plastic frame having a shape adapted to the air outlet, and the periphery of the mesh body is wrapped in the plastic frame by an injection molding process.
[0007] The air filter housing provided by the utility model may also have the following feature: the plastic frame is ultrasonically welded inside the upper housing toward the air outlet.
[0008] The air filter housing provided by the utility model may also have the following feature: wherein the mesh number is 300 meshes.
[0009] The air filter housing provided by the utility model may also have the following features: a first air intake chamber and a second air intake chamber are formed in the lower housing by a partition, one end of the first air intake chamber is connected to the air inlet, and the other end is connected to the second air intake chamber, a guide channel is formed between the first air intake chamber and the second air intake chamber, and an arc section is formed at the position of the partition located at the guide channel.
[0010] The air filter housing provided by the utility model may also have the following features: wherein the lower housing comprises: a lower housing body having an opening on the upper side and connected to the upper housing body, a lower side concavely formed with a first air inlet cavity, a bottom housing installed at one end of the lower housing body away from the upper housing body and forming a second air inlet cavity, and a sealing member arranged between the lower housing body and the bottom housing; when the bottom housing is installed on the lower housing body, the first air inlet cavity and the second air inlet cavity are combined to form a first air inlet chamber.
[0011] The air filter housing provided by the utility model may also have the following feature: wherein the bottom shell has a guide surface inclined from a side away from the lower shell body toward a side close to the lower shell body, for guiding the gas into the second air intake chamber.
[0012] The utility model also proposes a steady-flow air filter for filtering air, which has the following characteristics: a housing, a filter element installed inside the housing, wherein the housing is the air filter housing as described above.
[0013] The steady flow air filter provided by the utility model may also have the following features: an upper edge is formed on one side of the upper shell body close to the lower shell body, a lower edge is formed on one side of the lower shell body close to the upper shell body, and the filter element has a fixed frame, which is pressed between the upper edge and the lower edge.
[0014] The utility model also proposes an air intake system having the following characteristics, comprising: an air filter, and a ventilation duct installed on the air filter, wherein the air filter is the steady flow air filter as described above.
[0015] Functions and effects of utility models
[0016] According to the air filter housing, flow-stabilizing air filter and air intake system involved in the utility model, a flow-stabilizing component is provided at the air outlet of the upper housing, and the flow-stabilizing component has a plurality of mesh holes for gas to pass through. When the airflow passes through the flow-stabilizing component, the airflow is dispersed by these distributed mesh holes. That is, the utility model can redisperse and optimize the flow field of the kicking flow inside the air filter housing through the flow-stabilizing component, thereby making the gas flow field more uniform and smooth. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural diagram of the air filter of the utility model.
[0018] Figure 2 It is a cross-sectional view of an air filter of the utility model.
[0019] Figure 3 It is a structural diagram of the flow stabilizing component of the utility model.
[0020] Figure 4 It is a structural schematic diagram of the utility model in which the flow stabilizing component is installed in the upper shell.
[0021] Figure 5 It is a structural schematic diagram of the lower shell of the utility model.
[0022] Figure 6 It is a cross-sectional view of the lower shell of the utility model.
[0023] Figure 7 It is a structural schematic diagram of the lower shell main body of the utility model.
[0024] Figure markings: air filter 100, shell 10, filter element 20, fixed frame 21, upper shell 30, air outlet 31, air outlet pipe 32, air outlet chamber 33, upper edging 34, lower shell 40, air inlet 41, air inlet pipe 42, partition 43, arc segment 431, first air inlet chamber 44, second air inlet chamber 45, flow guide channel 46, lower shell body 47, first air inlet cavity 471, lower edging 472, bottom shell 48, second air inlet cavity 481, guide surface 482, flow stabilizing component 50, mesh body 51, fixing portion 52. DETAILED DESCRIPTION
[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the air filter housing, the steady-flow air filter and the intake system of the present invention are specifically described below in combination with the embodiments and drawings.
[0026] <Example>
[0027] Figure 1 It is a structural diagram of the air filter of the utility model.
[0028] Figure 2 It is a cross-sectional view of an air filter of the utility model.
[0029] The present embodiment provides an intake system, including an air filter 100 and a ventilation pipe installed on the air filter 100 (which may include an air duct, an exhaust pipe, and other prior art gas pipes for collecting and supplying gas, which are not shown in the figure). The air filter 100 is a steady-flow air filter, including a housing 10 and a filter element 20 installed inside the housing 10. Figure 2As shown, the housing 10 is hollow inside and includes an upper housing 30, a lower housing 40 and a flow stabilizing component 50, and the filter element 20 is installed between the upper housing 30 and the lower housing 40. An air inlet 41 is provided on one side of the lower housing 40, and the air inlet 41 extends outward to form an air inlet pipe 42. A partition 43 is formed inside the lower housing 40, and the partition 43 divides the internal cavity of the lower housing 40 into a first air inlet chamber 44 and a second air inlet chamber 45. The first air inlet chamber 44 and the second air inlet chamber 45 are connected through a guide channel 46. The upper shell 30 is installed above the lower shell 40, and an air outlet 31 is opened on one side. The air outlet 31 extends outward to form an air outlet pipe 32, and an air outlet chamber 33 is formed inside the upper shell 30. The gas flows as follows: from the air inlet pipe 42 into the first air inlet chamber 44, then through the guide channel 46 into the second air inlet chamber 45, then after being filtered by the filter element 20, into the air outlet chamber 33, and flows out from the air outlet 31 and the air outlet pipe 32. The flow stabilizing component 50 is fixed at the air outlet 31, and is used to stabilize the airflow leading to the air outlet 31.
[0030] Figure 3 It is a structural diagram of the flow stabilizing component of the utility model.
[0031] Figure 4 It is a structural schematic diagram of the utility model in which the flow stabilizing component is installed in the upper shell.
[0032] The flow stabilizing component 50 includes a mesh body 51 and a fixing portion 52. The mesh body 51 is formed by the intersection of a number of longitude and latitude lines, and a number of mesh holes 53 are formed between the longitude and latitude lines. The mesh body 51 has a shape that matches the air outlet 31, so that it can just cover the air outlet 31. In this embodiment, the air outlet 31 is circular, so the mesh body 51 is also preferably circular, and the fixing portion 52 is arranged on the periphery of the circular mesh body 51, and is used to fix the mesh body 51 at the air outlet 31. The mesh body 51 is a mesh structure made of metal wire (preferably SUS304 wire mesh), and the mesh number is preferably 300 meshes. The fixing portion 52 is a plastic frame. During installation, the periphery of the mesh body 51 is first wrapped in the plastic frame by injection molding and then the plastic frame is ultrasonically welded to the inside of the upper shell 30 leading to the air outlet 31. When the gas in the gas outlet chamber 33 flows toward the gas outlet 31 , it will first pass through the mesh body 51 and be dispersed through the mesh holes 53 evenly distributed on the mesh body 51 , thereby making the flow field of the airflow more uniform and achieving a flow stabilization effect.
[0033] Figure 5 It is a structural schematic diagram of the lower shell of the utility model.
[0034] Figure 6 It is a cross-sectional view of the lower shell of the utility model.
[0035] like Figure 5 and Figure 6As shown, the partition 43 in the lower shell 40 is located at the guide channel 46 and has an arc segment 431, which guides the incoming airflow and guides the airflow in the first air intake chamber 44 to the second air intake chamber 45. At the same time, it can increase the air intake area at the entire air intake channel, and dispersing the gas can further enhance the flow stabilization effect.
[0036] Figure 7 It is a structural schematic diagram of the lower shell main body of the utility model.
[0037] The lower shell 40 has a lower shell body 47 and a bottom shell 48 which are separately arranged, and a sealing member 49 which is arranged between the lower shell body 47 and the bottom shell 48. The upper side of the lower shell body 47 has an opening and is connected to the upper shell 30, and the lower side is concave to form a first air inlet cavity 471 (i.e., the position below the partition 43). The bottom shell 48 is installed at one end of the lower shell body 47 away from the upper shell 30, and is formed with a second air inlet cavity 481. When the bottom shell 48 is installed on the lower shell body 47, the first air inlet cavity 471 and the second air inlet cavity 481 are combined to form a first air inlet chamber 44. The bottom shell 48 has a guide surface 482 which is inclined from the side away from the lower shell body 47 toward the side close to the lower shell body 47, and is used to guide the gas into the second air inlet chamber 45.
[0038] A lower edge 472 is formed on the side of the lower shell body 47 of the lower shell 40 close to the upper shell 30, and an upper edge 34 is formed on the side of the upper shell 30 close to the lower shell 40. The filter element 20 has a fixing frame 21, and the fixing frame 21 is pressed between the upper edge 34 and the lower edge 472, so that the filter element 20 is firmly installed between the upper shell 30 and the lower shell 40.
[0039] Functions and effects of this embodiment
[0040] In the above embodiment, a flow stabilizing component is provided at the air outlet 31 of the upper shell 30. The flow stabilizing component has a mesh body 51 with a plurality of mesh holes 53 evenly distributed, so that the gas is dispersed when flowing through the mesh body 51, so that the flow field of the kick flow inside the air filter shell 10 is dispersed and optimized, making the gas flow field more uniform and smooth, and making the air flow sensor detection more accurate.
[0041] The mesh body 51 of the above embodiment is firstly wrapped with a plastic frame at its periphery by injection molding, and then ultrasonically welded to the position inside the upper shell 30 leading to the air outlet 31 , so that the flow stabilizing component can be firmly arranged at the air outlet 31 .
[0042] The above embodiments are only preferred embodiments of the present invention, and do not limit the patent protection scope of the present invention. Any equivalent unit transformations made using the contents of the present invention specification and drawings, directly or indirectly used in other related technical fields, are also included in the protection scope of the present invention.
Claims
1. An air filter housing, characterized in that: include: The lower shell is provided with an air inlet; An upper shell is mounted on the lower shell and is provided with an air outlet; as well as A flow stabilizing component, fixed at the air outlet, for stabilizing the airflow toward the air outlet; Wherein, the flow stabilizing component has a plurality of mesh holes for gas to pass through.
2. The air filter housing according to claim 1, It is characterized in that Wherein, the flow stabilizing component comprises: A mesh body having a plurality of mesh holes; A fixing portion is used to fix the mesh body at the air outlet.
3. The air filter housing according to claim 2, characterized in that: in, The fixing part is a plastic frame having a shape matching the air outlet, and the periphery of the mesh body is wrapped in the plastic frame through an injection molding process.
4. The air filter housing according to claim 3, characterized in that: in, The plastic frame is ultrasonically welded at the air outlet.
5. The air filter housing according to any one of claims 1 to 4, characterized in that: in, The lower shell is divided into a first air inlet chamber and a second air inlet chamber by a partition. One end of the first air inlet chamber is connected to the air inlet port, and the other end is connected to the second air inlet chamber. A guide channel is formed between the first air inlet chamber and the second air inlet chamber, and an arc section is formed at the portion of the partition located at the guide channel.
6. The air filter housing according to claim 5, characterized in that: in, The lower housing has: The lower shell body has an opening on the upper side and is connected to the upper shell body, and the lower side is concave to form a first air inlet cavity; A bottom shell, mounted on one end of the lower shell body away from the upper shell body and formed with a second air inlet cavity; and A sealing member, disposed between the lower shell body and the bottom shell; When the bottom shell is mounted on the lower shell body, the first air inlet cavity and the second air inlet cavity are combined to form the first air inlet chamber.
7. The air filter housing according to claim 6, characterized in that: in, The bottom shell has a guide surface which is inclined from a side away from the lower shell body toward a side close to the lower shell body, and is used to guide gas into the second air inlet chamber.
8. A steady flow air filter for filtering air, characterized in that: include: case, A filter element is installed inside the housing. Wherein, the shell is an air filter shell as described in any one of claims 1-7.
9. The steady flow air filter according to claim 8, characterized in that: in, An upper rim is formed on one side of the upper shell body close to the lower shell body, and a lower rim is formed on one side of the lower shell body close to the upper shell body. The filter element has a fixing frame, and the fixing frame is pressed between the upper rim and the lower rim.
10. An air intake system, characterized in that: include: Air filter, A ventilation duct is installed on the air filter. Wherein, the air filter is a steady flow air filter as described in claim 8 or 9.