Cylindrical air filter

Abstract

The utility model belongs to the field of air inlet systems, and particularly relates to a cylindrical air filter. Comprising a shell, an air inlet cavity and an air outlet cavity are formed in the shell, a filter element is cylindrical and installed in the shell, an air outlet channel leading to the air outlet cavity is formed in the middle of the filter element, the air inlet pipe is communicated with the air inlet cavity, the air outlet pipe is communicated with the air outlet cavity, and air from the air inlet pipe enters the air inlet cavity from the tangential direction of the filter element. An air outlet channel leading to the air outlet cavity is formed in the middle of the filter element, and air in the air inlet cavity enters the filter element from the outer surface of the filter element, enters the air outlet channel after being filtered by the filter element and flows into the air outlet cavity. According to the air filter, air from the air inlet pipe can enter the air inlet chamber from the tangential direction of the filter element through the arrangement of the mounting structures among the air inlet pipe, the air inlet chamber and the filter element, and air filtered by the filter element can enter the air outlet chamber from the air outlet channel in the middle of the filter element, so that the volume of the air filter after filtering is increased; the engine performance is improved.

Description

Technical Field

[0001] The utility model belongs to the field of air intake systems, and in particular relates to a cylindrical air filter. Background Art

[0002] The air filter (also called air filter) is part of the air intake system of cars, beach cars, motorcycles, etc. Its main function is to filter out impurities or dust in the air and let clean air enter the engine cylinder. Especially for some vehicles that often travel in harsh environments, such as beach cars, the dust content in their driving environment is often high, which puts high demands on the dust storage performance of the car's air filter. In order to ensure that the air filter can have high dust storage performance. The current air filter outlet pipe usually adopts a single outlet pipe structure, which can be well matched with the beach car with a single-cylinder engine, but when it is necessary to match a multi-cylinder engine, it is usually necessary to add an additional intake manifold to connect (that is, it is necessary to add an outlet pipe and an intake manifold to the air filter to match). For example, a V-type twin-cylinder engine usually adopts an additional Y-type intake manifold to connect with the air filter to ensure the normal intake of the engine, while an inline twin-cylinder engine usually requires the air filter to be arranged with two outlet pipes to ensure the normal intake of the engine.

[0003] The air filters currently used are prone to the following problems in actual use, such as small space before the air filter, the filtering and ash storage performance depends entirely on the performance of the filter paper itself, and the ash storage capacity is low; if the space before the filter is expanded, it is easily restricted by the cabin boundary, making it difficult to arrange the air filter; the air filter has poor ash storage performance and a short maintenance cycle, etc. Summary of the invention

[0004] The utility model is developed to solve the above problems and aims to provide a cylindrical air filter with good ash storage performance.

[0005] The utility model provides a cylindrical air filter, which has the following characteristics: a shell body, which has an air inlet chamber and an air outlet chamber inside; a filter element, which is cylindrical and installed inside the shell body and is located between the air inlet chamber and the air outlet chamber; an air outlet passage leading to the air outlet chamber is arranged in the middle of the filter element; an air inlet pipe is connected with the air inlet chamber; and an air outlet pipe is connected with the air outlet chamber, wherein the air from the air inlet pipe enters the air inlet chamber from the tangential direction of the filter element; an air outlet passage leading to the air outlet chamber is arranged in the middle of the filter element; the air in the air inlet chamber enters the filter element from the outer surface of the filter element, enters the air outlet passage after being filtered by the filter element, and flows into the air outlet chamber.

[0006] The cylindrical air filter provided by the utility model may also have the following features: the shell includes a cylindrical mounting portion, one end of which is provided with an annular guide plate, and the other end of which is detachably provided with a filter element end cover; an annular mounting groove is provided on the inner side of the annular guide plate, one end of the filter element is inserted into the annular mounting groove, and the other end is abutted against the inner side of the filter element end cover.

[0007] The cylindrical air filter provided by the utility model may also have the following feature: an air intake pipe opening for installing the air intake pipe is provided on the cylindrical mounting portion, the air intake pipe opening is located on the side where the annular guide plate is located, and a spiral guide plate is formed between the air intake guide plate and the inner wall of the cylindrical mounting portion.

[0008] The cylindrical air filter provided by the utility model may also have the following characteristics: the air intake chamber includes an air intake guide chamber and an annular air intake chamber which are interconnected; the air intake guide chamber is formed between the outer periphery of the annular guide plate, the spiral guide plate and the inner circumferential wall of the cylindrical mounting portion; the annular air intake chamber is formed between the outer circumferential surface of the portion of the filter element exposed outside the annular guide plate and the inner circumferential wall of the cylindrical mounting portion; the air from the intake pipe enters the air intake guide chamber from the intake pipe opening, and then enters the annular air intake chamber under the guidance of the annular guide plate and the spiral guide plate.

[0009] The cylindrical air filter provided by the utility model may also have the following feature: a gap is provided between the inner wall of the annular guide plate and the outer peripheral surface of the filter element.

[0010] The cylindrical air filter provided by the utility model may also have the following characteristics: a chip removal port is provided on the cylindrical mounting portion, one end of the chip removal port is connected to the annular air inlet chamber, and the other end is connected to the outside, and the chip removal port is located at one end of the annular air inlet chamber away from the air inlet guide chamber.

[0011] The cylindrical air filter provided by the utility model may also have the following characteristics: an air outlet connected to the air outlet channel is provided at one end of the cylindrical mounting portion located at the annular mounting groove, and a side end cover is provided on the outer side of the air outlet of the cylindrical mounting portion, and a transition chamber connected to the air outlet chamber is formed between the side end cover and the air outlet.

[0012] The cylindrical air filter provided by the utility model may also have the following feature: the shell also includes an air outlet portion integrally formed beside the cylindrical mounting portion, the air outlet chamber is opened in the air outlet portion, and an air outlet end cover is provided at the outlet of the air outlet portion.

[0013] The cylindrical air filter provided by the utility model may also have the following feature: at least two air outlet ports are arranged on the air outlet end cover, and one air outlet pipe is installed on each of the air outlet ports.

[0014] The cylindrical air filter provided by the utility model may also have the following features: the filter element end cover is detachably mounted on one end of the cylindrical mounting portion by a drawstring, the side end cover is fixedly mounted on the other end of the cylindrical mounting portion by vibration welding or hot plate welding, and the outlet end cover is fixedly mounted at the outlet of the outlet portion by vibration welding or hot plate welding.

[0015] Functions and effects of utility models

[0016] The cylindrical air filter of the utility model adopts a cylindrical filter element. Under the same volume, the filtering area of ​​the cylindrical filter element can be maximized, the air can be filtered to a greater extent, and the filtered impurities can be accommodated in a larger range, thereby extending the service life of the filter element. At the same time, through the installation structure between the intake pipe, the intake chamber and the filter element, the air from the intake pipe can enter the intake chamber from the tangent direction of the filter element, so that the air can more conveniently and quickly enter the intake chamber and contact the filter element, and the product has excellent ash storage performance; the gas filtered by the filter element can enter the outlet chamber from the outlet channel in the middle of the filter element, so that the volume of the air filter after filtration is increased, thereby improving the engine performance.

[0017] Furthermore, an annular guide plate is provided inside the shell, which, on the one hand, can form an annular mounting groove for installing the filter element inside it, and on the other hand, can guide the air from the intake pipe into the intake chamber, so that the air can quickly enter the filter element for filtration, thereby improving the filtration efficiency; in addition, a detachable filter element end cover is also provided at the outer end of the filter element to facilitate subsequent filter element replacement.

[0018] Furthermore, the air outlet portion of the housing can be made larger, that is, the internal air outlet chamber can be enlarged, which solves the shortcoming of the small post-filter space of the traditional cylindrical air filter and improves the engine performance.

[0019] Furthermore, an outlet end cover is provided at the outlet of the air outlet part, and the air outlet end cover is provided with two or even more air outlet pipes to meet the air intake layout requirements of a multi-cylinder engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is one of the structural schematic diagrams of the cylindrical air filter of the utility model.

[0021] Figure 2 It is a cross-sectional view of a cylindrical air filter of the utility model.

[0022] Figure 3 It is one of the structural schematic diagrams of the shell of the utility model.

[0023] Figure 4 This is the second structural schematic diagram of the cylindrical air filter of the utility model.

[0024] Figure 5 This is the second structural schematic diagram of the housing of the utility model.

[0025] Figure 6 This is the third structural schematic diagram of the housing of the utility model.

[0026] Figure 7 It is a cross-sectional view of the shell of the utility model.

[0027] Figure 8 It is a cross-sectional view of the filter element of the utility model installed on the housing.

[0028] Fig. 9 The utility model is a structural schematic diagram in which the air outlet pipe is installed on the air outlet end cover.

[0029] Figure markings: 1-shell; 11-air inlet chamber; 111-air inlet guide chamber; 112-annular air inlet chamber; 12-air outlet chamber; 13-cylindrical mounting portion; 14-air outlet portion; 15-annular guide plate; 16-annular mounting groove; 17-air inlet pipe opening; 171-positioning slot; 18-chip removal port; 19-air outlet; 2-filter element; 21-air outlet channel; 22-filter element body; 23-gasket; 3-air inlet pipe; 31-bump; 4-air outlet pipe; 41-protrusion; 5-filter element end cover; 51-pull buckle; 6-air outlet end cover; 61-air outlet pipe opening; 62-positioning channel; 7-side end cover; 71-transition chamber. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the following embodiments specifically illustrate the technical solutions of the present invention in conjunction with the accompanying drawings.

[0031] It should be noted that the structures, proportions, sizes, etc. depicted in the drawings of the embodiments of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any structural modification, change in proportional relationship, or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present invention. At the same time, the terms such as "inside", "outside", "middle" and "one" cited in the embodiments of this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0032] It should also be noted that when an element is referred to as being “fixed to,” “disposed on,” or “connected to” another element, it may be directly on the other element or an intermediate element may exist at the same time.

[0033] <Example>

[0034] This embodiment provides a cylindrical air filter that can be used in cars or motorcycles, especially in vehicles that travel on complex terrain, such as beach cars. Figure 1-Figure 2 As shown, the cylindrical air filter at least includes a shell 1, a filter element 2, an air inlet pipe 3 and an air outlet pipe 4. The shell 1 is provided with an air inlet chamber 11 and an air outlet chamber 12. The air inlet pipe 3 is connected to the air inlet chamber 11, and the air outlet pipe 4 is connected to the air outlet chamber 12. The filter element 2 is cylindrical, installed inside the shell 1, and located between the air inlet chamber 11 and the air outlet chamber 12. The air from the air inlet pipe 3 enters the air inlet chamber 11 from the tangential direction of the filter element 2. An air outlet channel 21 leading to the air outlet chamber 12 is arranged in the middle of the filter element 2. The air in the air inlet chamber 11 enters the filter element 2 from the outer surface of the filter element 2, enters the air outlet channel 21 after being filtered by the filter element 2, and flows to the air outlet chamber 12, and is finally discharged from the air outlet pipe 4 (the arrow in the figure points to the direction of air flow).

[0035] like Figure 2 and Figure 3 As shown, the housing 1 includes an integrally formed cylindrical mounting portion 13 and an air outlet portion 14. An annular guide plate 15 is provided at one end of the cylindrical mounting portion 13, and a filter element end cover 5 is provided at the other end. Figure 4 As shown, the filter element end cover 5 is detachably mounted on one end of the cylindrical mounting portion 13 through a plurality of buckles 51, the buckles 51 are mounted on the filter element end cover 5, the outer edge of the cylindrical mounting portion 13 is formed with a buckle edge that matches the buckle 51, and one end of the buckle 51 is buckled on the buckle edge to achieve the installation and fixation between the filter element end cover 5 and the cylindrical mounting portion 13. A sealing ring is also pressed between the edge of the cylindrical mounting portion 13 and the filter element end cover 5. Figure 5-Figure 6As shown, the annular guide plate 15 is integrally formed inside one end of the cylindrical mounting portion 13, and an annular mounting groove 16 is provided inside the annular guide plate 15. One end of the filter element 2 is inserted into the annular mounting groove 16, and the other end is abutted against the inner side of the filter element end cover 5. The detachable mounting structure design of the filter element end cover 5 allows the filter element 2 to be disassembled and replaced. Figure 2 As shown, the filter element 2 includes a filter element body 22 and gaskets 23 respectively arranged at both ends of the filter element body 22 , and gaskets 23 are arranged between the two ends of the filter element body 22 and the annular mounting groove 16 and the filter element end cover 5 .

[0036] like Figure 7-Figure 8 As shown, the cylindrical mounting portion 13 is provided with an air inlet port 17 for mounting the air inlet pipe 3, and the air inlet port is located on the side where the annular guide plate 15 is located, and a spiral guide plate 152 is formed between the annular guide plate 15 and the inner wall of the cylindrical mounting portion 13. The air inlet chamber 11 includes an air inlet guide cavity 111 and an annular air inlet cavity 112 which are interconnected, and the air inlet guide cavity 111 is formed between the outer periphery of the annular guide plate 15, the spiral guide plate 152 and the inner peripheral wall of the cylindrical mounting portion 13, and the annular air inlet cavity 112 is formed between the outer peripheral surface of the portion of the filter element 2 exposed from the annular guide plate 15 and the inner peripheral wall of the cylindrical mounting portion, as shown in FIG. Figure 6 As shown, the inner end of the air inlet port 17 is connected to the air inlet guide cavity 111, and the other end is used to install the air inlet pipe 3. The air from the air inlet pipe 3 enters the air inlet guide cavity 111 from the tangential direction of the annular guide plate 15, and then enters the annular air inlet cavity 112 under the guidance of the spiral guide plate. The setting of the spiral guide plate 152 can guide and buffer the flow direction of the air, so that it can quickly and smoothly enter the annular air inlet cavity 112 along the spiral direction, and then enter the filter element 2. The air inlet port 17 is set on the side where the annular guide plate 15 is located, so that the air can enter the annular air inlet cavity 112 in a larger range after being guided at one time, and enter the filter element 2, thereby improving the filtering efficiency.

[0037] In addition, if Figure 2 As shown, there is a gap 151 between the inner wall of the annular guide plate 15 and the outer peripheral surface of one end of the filter element 2 extending into the annular mounting groove 16, so that the air inside the annular air inlet cavity 112 can enter into the part of the filter element 2 located in the annular mounting groove 16 along the gap for filtration, thereby increasing the available area of ​​the filter element 2 and improving the utilization rate of the filter element 2.

[0038] The cylindrical mounting portion 13 is also provided with a chip discharge port 18, one end of which is connected to the annular air inlet chamber 112, and the other end is connected to the outside, and the chip discharge port 18 is located at one end of the annular air inlet chamber 112 away from the air inlet guide chamber 111. The heavy impurities such as mud and sand carried in the air will fall to the bottom of the inner wall of the cylindrical mounting portion 13 due to inertia, gravity and other factors. A chip discharge port 18 is provided at the bottom of the inner wall of the cylindrical mounting portion 13 to discharge these impurities in time. A one-way valve can also be provided at the chip discharge port 18, which can facilitate the discharge of impurities on the one hand, and prevent the external airflow from entering from the chip discharge port 18 to affect the internal airflow on the other hand.

[0039] like Figure 5-Figure 6 As shown, the cylindrical mounting portion 13 is provided with an air outlet 19 in the middle of one end where the annular mounting groove 16 is located. The annular mounting groove 16 is formed between the outer wall of the inner flange formed by the air outlet 19 and the annular guide plate 15. Figure 2 As shown, one end of the air outlet 19 is connected to the air outlet channel 21, and the other end is connected to the air outlet chamber 14. The cylindrical mounting portion 13 is located outside the air outlet 19 and is also covered with a side end cover 7. A transition chamber 71 connected to the air outlet chamber 12 is formed between the side end cover 7 and the air outlet 19. After being filtered by the filter element 2, the gas enters the air outlet channel 21, passes through the air outlet 19, enters the transition chamber 71, and then flows into the air outlet chamber 12. The setting of the transition chamber 71 can adjust the direction of the air flow, such as Figure 3 In the embodiment, the airflow after being filtered by the filter element initially flows in the direction of the air outlet channel, that is, the axial direction of the filter element, and enters the transition chamber 71 after passing through the air outlet 19. The airflow changes direction under the transition and guidance of the transition chamber 71 to enter the air outlet chamber 12. Therefore, the position of the air outlet chamber can be changed by correspondingly changing or arranging the shape and position of the side end cover 7 according to the actual installation environment.

[0040] In this embodiment, if Figure 3 As shown, the air outlet portion 14 is integrally formed beside the cylindrical mounting portion 13, and an air outlet chamber 12 is provided in the air outlet portion 14. Figure 1 As shown, an outlet cover 6 is provided at the outlet of the outlet portion 14, and at least two outlet pipe openings 61 are provided on the outlet cover 6, and an outlet pipe 4 is installed on each outlet pipe opening 61. The side of the cylindrical mounting portion 13 of this embodiment is the axial side of the cylindrical mounting portion 13. Such a setting can make the outlet chamber 12 larger, and improve the engine performance by increasing the volume after the air filter is filtered; more outlet pipe openings and outlet pipes can also be provided, which effectively solves the difficulty of arranging an additional intake manifold for the intake of a multi-cylinder engine.

[0041] In this embodiment, the side end cover 7 is fixedly installed at the other end of the cylindrical mounting portion 13 by vibration welding or hot plate welding, and the air outlet end cover 6 is fixedly installed at the outlet of the air outlet portion 14 by vibration welding or hot plate welding to ensure the stability and sealing of the connection.

[0042] In addition, in order to prevent the air inlet pipe 3 and the air outlet pipe 4 from being installed incorrectly, foolproof structures are provided on the air inlet pipe opening 17 and near the air outlet pipe opening 61. Figure 3 and Figure 4 As shown, the air inlet port 17 is in the shape of a circular tube, and two convex pieces are formed on its outer peripheral surface, and a positioning groove 171 is formed between the two convex pieces. The pipe opening of the air inlet pipe 3 is sleeved at the air inlet port 17, and a convex block 31 that can be embedded in the positioning groove 171 is provided at the pipe opening of the air inlet pipe 3. Fig. 9 As shown, the air outlet end cover 6 is provided with two protrusions on one side of the air outlet pipe opening 61, and a positioning channel 62 is formed between the two protrusions. The pipe opening of the air outlet pipe 4 is sleeved on the air inlet pipe opening 17, and a protrusion 41 that can be embedded in the positioning channel 62 is provided at the pipe opening of the air outlet pipe 4.

[0043] The air filter structure of the above embodiment can freely arrange dual or multiple outlet pipes on the side after filtration, which effectively solves the difficulty of additionally arranging an intake manifold for the intake of a multi-cylinder engine, retains the advantages of the cylindrical filter element, and improves the engine performance by increasing the volume after filtration of the air filter.

[0044] In addition, the above-mentioned embodiment divides the complex air filter structure into multiple parts that can be easily processed through a chamber design, and uses vibration welding or hot plate welding to achieve heat-sealing of the components, thereby ensuring the processing and manufacturing requirements of the product.

[0045] The above implementation modes are preferred cases of the present utility model and are not used to limit the protection scope of the present utility model. Any simple modification, equivalent change or modification made to the above embodiments based on the technical principle of the present utility model still falls within the scope of the technical solution of the present utility model.

Claims

1. A cylindrical air filter, characterized in that: include: The shell has an air inlet chamber and an air outlet chamber inside. The filter element is cylindrical and installed inside the housing. The middle of the filter element is provided with an outlet passage leading to the outlet chamber. an air intake pipe communicating with the air intake chamber, and an air outlet pipe, connected to the air outlet chamber, Among them, the air from the intake pipe enters the intake chamber from the tangential direction of the filter element, the air in the intake chamber enters the filter element from the outer surface of the filter element, enters the outlet channel after being filtered by the filter element, and flows to the outlet chamber.

2. A cylindrical air filter according to claim 1, characterized in that: The shell includes a cylindrical mounting portion, one end of which is provided with an annular guide plate, and the other end of which is detachably provided with a filter element end cover; an annular mounting groove is provided on the inner side of the annular guide plate, one end of the filter element is inserted into the annular mounting groove, and the other end is abutted against the inner side of the filter element end cover.

3. A cylindrical air filter according to claim 2, characterized in that: The cylindrical mounting portion is provided with an air intake opening for mounting the air intake pipe, and the air intake opening is located at a side where the annular guide plate is located, and a spiral guide plate is formed between the annular guide plate and the inner wall of the cylindrical mounting portion.

4. A cylindrical air filter according to claim 3, characterized in that: The air intake chamber comprises an air intake guide chamber and an annular air intake chamber which are interconnected. The air intake guide cavity is formed between the outer periphery of the annular guide plate, the spiral guide plate and the inner peripheral wall of the cylindrical mounting portion. The annular air inlet cavity is formed between the outer peripheral surface of the portion of the filter element exposed from the annular guide plate and the inner peripheral wall of the cylindrical mounting portion; The air from the air intake pipe enters the air intake guide cavity from the air intake pipe opening, and then enters the annular air intake cavity under the guidance of the annular guide plate and the spiral guide plate.

5. A cylindrical air filter according to claim 2, characterized in that: There is a gap between the inner wall of the annular guide plate and the outer peripheral surface of the filter element.

6. A cylindrical air filter according to claim 4, characterized in that: The cylindrical mounting portion is provided with a chip removal opening, one end of which is connected to the annular air inlet cavity and the other end is connected to the outside, and the chip removal opening is located at one end of the annular air inlet cavity away from the air inlet guide cavity.

7. A cylindrical air filter according to any one of claims 2 to 6, characterized in that: The cylindrical mounting portion is located at one end where the annular mounting groove is located, and is provided with an outlet connected to the outlet channel. The cylindrical mounting portion is located on the outer side of the outlet and is provided with a side end cover, and a transition chamber connected to the outlet chamber is formed between the side end cover and the outlet.

8. A cylindrical air filter according to claim 7, characterized in that: The shell also includes an air outlet portion integrally formed beside the cylindrical mounting portion, the air outlet chamber is provided in the air outlet portion, and an air outlet end cover is provided at the outlet of the air outlet portion.

9. A cylindrical air filter according to claim 8, characterized in that: The air outlet end cover is provided with at least two air outlet pipe openings, and each of the air outlet pipe openings is equipped with an air outlet pipe.

10. A cylindrical air filter according to claim 9, characterized in that: The filter element end cover is detachably mounted on one end of the cylindrical mounting portion by a draw buckle, the side end cover is fixedly mounted on the other end of the cylindrical mounting portion by vibration welding or hot plate welding, and the outlet end cover is fixedly mounted at the outlet of the outlet portion by vibration welding or hot plate welding.

Images