CN115217687B

CN115217687B - Air filter

Info

Publication number: CN115217687B
Application number: CN202210105823.5A
Authority: CN
Inventors: 朱箴箴; 朱永成; 胡见; 陈帅
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2024-01-23
Anticipated expiration: 2042-01-27
Also published as: CN115217687A

Abstract

The invention provides an air filter, which relates to the technical field of vehicle air intake filtration, and comprises a shell and a filter element, wherein the shell is provided with a cavity, an air inlet and an air outlet, wherein the air inlet and the air outlet are communicated with the cavity for air to enter and exit; the filter element is fixed in the cavity; the filter element defines a plurality of through cavities through which the gas passes; one end opening of each through cavity faces to the air inlet, and the other end opening faces to the air outlet. The air filter provided by the invention has the advantages that dirty side air enters from the air inlet, passes through the plurality of through cavities in the filter element, is filtered, and then is sent out from the air outlet. The filter element is equivalent to an impedance composite silencer, noise is transmitted back and forth in each through cavity, and the purpose of reducing noise is achieved.

Description

Air filter

Technical Field

The invention relates to the technical field of vehicle air intake filtration, in particular to an air filter.

Background

The air filter is a filter, and is mainly used for engineering locomotives, automobiles, agricultural locomotives and the like. During the working process of the engine, a large amount of air is sucked, and if the air is not filtered, dust suspended in the air is sucked into the cylinder, so that the abrasion of the piston group and the cylinder can be accelerated. Larger particles enter between the piston and the cylinder, which can cause severe "scuffing" phenomena, which are particularly severe in dry sandy working environments. The air filter is arranged in front of the carburetor or the air inlet pipe, plays a role in filtering dust and sand in air, and ensures that sufficient and clean air enters the cylinder.

In the related art, a part of the air cleaner is connected to the clean air duct on the engine side, and the other part is connected to the dirty air duct. The air filter is limited by the space of the engine cabin, the silencing volume is difficult to reach the design requirement, the noise is difficult to reach the standard, and silencing elements such as a resonant cavity or a broadband silencer and the like are required to be added to the air filter or an air inlet pipeline; however, the increase of the silencing element and the limitation of the trend of the air inlet pipeline also bring the risk of higher air inlet resistance.

Disclosure of Invention

Aiming at the defects of the existing air filter, the invention provides the air filter which can reduce noise without additionally arranging a silencing element.

In order to solve the technical problems, the invention adopts the following technical scheme:

according to one aspect of the present invention, there is provided an air cleaner comprising:

a housing defining a cavity, an air inlet and an air outlet communicating with the cavity for the ingress and egress of air;

the filter element is fixed in the cavity; the filter element defines a plurality of through cavities through which the gas passes; one end opening of each through cavity faces to the air inlet, and the other end opening faces to the air outlet.

In some embodiments, the filter element is corrugated, and the space within the peaks constitutes the through cavity.

In some embodiments, the filter element is corrugated by a filter paper.

In some embodiments, the filter paper has a carbon layer attached to the outer surface.

In some embodiments, the filter cartridge further comprises a filter cartridge holder secured within the cavity, the filter cartridge being secured to the filter cartridge holder.

In some embodiments, the filter element support comprises a frame body and opposite baffle plates protruding from the first side of the frame body, the filter element is fixed on the first side of the frame body, and two ends of each wave crest in the filter element are respectively limited in one baffle plate.

In some embodiments, a sealing ring is sleeved on the outer surface of the baffle plate and is used for being in sealing connection with the shell.

In some embodiments, the peaks and valleys of the filter element are rectangular.

In some embodiments, a notch is formed in at least part of the wave crest in the filter element.

In some embodiments, the housing is assembled from opposing upper and lower covers.

According to the technical scheme, the invention has at least the following advantages and positive effects:

the air filter provided by the invention has the advantages that dirty side air enters from the air inlet, passes through the plurality of through cavities in the filter element, is filtered, and then is sent out from the air outlet. The filter element is equivalent to an impedance composite silencer, noise is transmitted back and forth in each through cavity, and the purpose of reducing noise is achieved.

Drawings

FIG. 1 is a perspective view of an embodiment of an air cleaner provided herein;

FIG. 2 is a cross-sectional view of an embodiment of an air cleaner provided herein;

FIG. 3 is a perspective view of an assembled filter cartridge and cartridge holder in an embodiment of an air cleaner provided herein.

The reference numerals are explained as follows:

1. a housing; 10. an upper cover; 11. a lower cover; 100. an air inlet; 101. an air outlet; 2. a filter element; 200. a through cavity; 3. a cartridge holder; 30. a frame body; 31. a baffle; 4. and (3) sealing rings.

Detailed Description

Exemplary embodiments that embody features and advantages of the present invention will be described in detail in the following description. It will be understood that the invention is capable of various modifications in various embodiments, all without departing from the scope of the invention, and that the description and illustrations herein are intended to be by way of illustration only and not to be construed as limiting the invention.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The air cleaner of the embodiment of the present application overcomes the disadvantages in the related art, and is applied to an automobile, particularly a passenger car. An air inlet 100 of the air cleaner is in abutting communication with a dirty side air duct of the internal combustion engine, and an air outlet 101 of the air cleaner is in abutting communication with a clean air duct on the internal combustion engine side.

The air cleaner of the embodiments of the present application may be used in any type of internal combustion engine, such as a two-stroke engine, a turbine engine, a gas engine, a diesel engine, a natural gas engine, a propane engine, and the like. Furthermore, the internal combustion engine may have any size, have any number of cylinders, and in a multi-cylinder engine, the cylinders may be arranged in an in-line configuration, a V-shaped configuration, or a flat configuration, or in any other manner well known in the art. The air cleaner of the present embodiment may also be used with either a carburetor with fuel air or a fuel-injected internal combustion engine. The air filter in the embodiment of the application is also particularly suitable for an internal combustion engine part of a hybrid electric vehicle type.

Referring to fig. 1 in combination with fig. 2, an air cleaner includes a housing 1 and a filter element 2, wherein the housing 1 defines a cavity therein, an air inlet 100 and an air outlet 101 communicating with the cavity for the ingress and egress of air. A filter cartridge 2 is fixed in the cavity, the filter cartridge 2 defining a plurality of through cavities 200 for the passage of gas; one end of each through cavity 200 opens toward the air inlet 100, and the other end opens toward the air outlet 101.

The dirty-side air enters from the air inlet 100, is filtered through the plurality of through-holes 200 in the filter element 2, and is then sent out from the air outlet 101. The filter element 2 corresponds to an impedance composite muffler, noise is transmitted back and forth in each through cavity 200, and the purpose of reducing noise is achieved.

The housing 1 may be designed in a rectangular, arc or V-shaped structure, wherein when the housing 1 is in an arc configuration, two ends of the housing 1 are respectively an air inlet 100 and an air outlet 101, that is, one end of the housing 1 is the air inlet 100, and the other end is the air outlet 101. The air inlet 100 and the air outlet 101 are on different sides of the housing 1.

When the housing 1 is in a V-shaped configuration, the two ends of the housing 1 are respectively an air inlet 100 and an air outlet 101, that is, one end of the housing 1 is the air inlet 100, and the other end is the air outlet 101. The air inlet 100 and the air outlet 101 are on the same side of the housing 1.

The casing 1 of different configurations can be applicable to different operation environment, and the shape that casing 1 adopted is in order to install at operation environment standard, and the ordinary person in the art can be independent of the type of choosing of above-mentioned configuration to make casing 1 can be according to boundary dysmorphism or integrate on the bonnet, solves the not enough problem in present hybrid vehicle type cabin space.

In this embodiment, the overall shape of the housing 1 is designed as a rectangle, one side of the housing 1 is provided with an air inlet 100, the other side of the housing 1 is provided with an air outlet 101, and the air inlet 100 and the air outlet 101 are disposed in a positive opposition.

The air inlet 100 is in a rectangular flat opening shape, the air outlet 101 is in a cylindrical column opening, and the design is convenient for the air inlet 100 of the air filter to be in butt joint communication with a dirty side air pipe of the internal combustion engine, and the air outlet 101 of the air filter is in butt joint with a clean air pipe on the side of the internal combustion engine.

In some embodiments, referring to fig. 1 in combination with fig. 2, the housing 1 is assembled from opposing upper and lower covers 10, 11. Wherein, the lower cover 11 is provided with a cavity for accommodating the filter element 2, and the top of the lower cover 11 is provided with an opening communicated with the cavity, thereby being convenient for loading the filter element 2 into the cavity. The lower cover 11 has an air inlet 100 on one side and an air outlet 101 on the other side on opposite sides. The central axis of the air inlet 100 is collinear with the central axis of the air outlet 101.

When the filter cartridge 2 is installed in the cavity, the upper cover 10 is sealed at the opening of the lower cover 11, and the upper cover 10 is fixed with the lower cover 11.

The upper cover 10 and the lower cover 11 can be made of metal or plastic, and the metal can be made of steel or iron. The upper cover 10 and the lower cover 11 may be made of the same material, or may be made of different materials.

The upper cover 10 and the lower cover 11 are assembled and fixed together by welding, threaded connection or snap connection. In this embodiment, the upper cover 10 and the lower cover 11 are made of steel materials with the same material, and are fixed by welding.

The shell 1 adopts the structure of assembling the upper cover 10 and the lower cover 11, thereby facilitating assembly and manufacture and mass production and assembly line operation.

The housing 1 may be designed to be a two-part structure in addition to the above-described structure, and it is obvious that the housing 1 may be designed to be easily assembled and disassembled by one of ordinary skill in the art.

The cartridge 2 defines a plurality of through chambers 200 through which gas passes, and the through chambers 200 are chambers that are hollow inside and penetrate both ends. The plurality of through cavities 200 are aligned in parallel. The direction of the line connecting the central axis of the gas inlet 100 and the central axis of the gas outlet 101 is perpendicular to the arrangement direction of the through cavities 200, that is, the arrangement direction of the through cavities 200 is perpendicular to the flow direction of the gas.

One end of each through cavity 200 opens toward the air inlet 100, and the other end opens toward the air outlet 101. The dirty-side air enters from the air inlet 100, is filtered through the plurality of through-holes 200 in the filter element 2, and is then sent out from the air outlet 101. The filter element 2 corresponds to an impedance composite muffler, noise is transmitted back and forth in each through cavity 200, and the purpose of reducing noise is achieved.

The shell 1 in a rectangular shape adopts a structure of assembling the upper cover 10 and the lower cover 11, has high space utilization rate, smaller volume and compact structure. Of course, as described above, the housing 1 can be shaped at the boundary of the cabin, and the space utilization efficiency is high.

In some embodiments, the cartridge 2 is corrugated, and the spaces within the peaks form the through cavities 200. In this way, the filter element 2 is configured as an integral member, the through cavity 200 belongs to the space in the wave crest, and the structure is simple and convenient to manufacture.

The corrugated filter element 2 is embedded in the cavity of the lower cover 11. The direction of the line connecting the central axis of the gas inlet 100 and the central axis of the gas outlet 101 is perpendicular to the extending direction of the corrugations, that is, the extending direction of the corrugations is perpendicular to the flowing direction of the gas, so that the air entering from the dirty side directly enters the through cavity 200 formed by the space in the peak. After the air is filtered, it is sent out from the air outlet 101. The through cavity 200 circularly transmits noise, thereby achieving the purpose of reducing noise.

In still other embodiments, the peaks and valleys of the filter element 2 are rectangular such that the overall configuration of the filter element 2 is presented asThe shape is more regular so that the whole structure of the filter element 2 is more regular, moreover, the through cavity 200 is formed by the space in the wave crest, the wave crest is rectangular, the space in the wave crest is provided with three contact surfaces except that one side is not closed, and air entering from the dirty side directly enters into the wave crest and then fully contacts with the three contact surfaces in each through cavity 200, so that the filtering effect on air can be further improved.

Furthermore, the space in the wave crest has three contact surfaces, noise is transmitted back and forth at the three contact surfaces in each through cavity 200, the transmission times are effectively increased, and the noise reduction effect is more remarkable.

The wave crests and wave troughs of the filter element 2 can be equally spaced or non-equally spaced. It will be appreciated that the shapes of the peaks and valleys of the filter element 2 may be other shapes such as semicircular, triangular, etc. besides the rectangle described above, or alternatively, a small ripple may be defined at the top end of the peak and a small ripple may be defined at the bottom end of the valley. One of ordinary skill in the art can design the shape of the peaks and valleys of the filter element 2 as desired.

In addition, the shape and size of the peaks and the valleys may be identical, or may be identical only in shape or size, or the shape and size of the peaks and the valleys may be completely different.

In some embodiments, at least a portion of the peaks in the filter element 2 are notched, that is, a portion or all of the peaks are notched, so as to achieve the purpose of further reducing noise. Each notch can be arranged adjacently or at intervals, can be arranged on one side of the filter element 2, can be arranged only in the middle of the filter element 2, and can be designed according to requirements by one of ordinary skill in the art.

The extending direction of the notch is the same as the flowing direction of the gas, and the length of the notch can be adjusted by one of ordinary skill in the art according to the requirement of noise reduction.

The filter element 2 may be made of plastic material such as plastic, for example, plastic may be integrally formed by injection molding.

The filter element 2 is a core component of the air filter, belongs to a vulnerable part, and requires special maintenance.

When the filter element 2 works for a long time, the filter element intercepts certain impurities, which can cause pressure increase and flow reduction, and the filter element needs to be cleaned in time. Care must be taken not to deform or damage the cartridge during cleaning.

Generally, the service life of the filter element 2 is different according to different used raw materials, but with the extension of the service time, impurities in the air can block the filter element 2, so that the filter element 2 needs to be replaced in time.

In still other embodiments, the filter element 2 is corrugated by a filter paper. The filter paper is usually made of superfine fiber paper filled with synthetic resin, and can effectively filter impurities and has strong dirt storage capacity. Because the flow of air is big, the intensity of filter paper can resist strong air current, guarantees filterable efficiency, prolongs air cleaner's life.

The carbon layer is attached to the outer surface of the filter paper to meet the requirements of evaporation emission regulations in the next stage.

Referring to fig. 2, the filter element 2 folded into a corrugated shape by the filter paper is fixed on the filter element bracket 3, and then the filter element bracket 3 and the filter element 2 are jointly fixed in a cavity in the lower cover 11, so as to improve the installation strength of the filter element 2 in the lower cover 11.

Referring to fig. 3, the filter element support 3 includes a frame 30 and a baffle 31 protruding from a first side of the frame 30 and opposite to the first side, the filter element 2 is fixed on the first side of the frame 30, and two ends of each peak in the filter element 2 are respectively limited in the baffle 31.

The housing 1 is rectangular overall, the lower cover 11 constituting the housing 1 is also rectangular, and the cavity in the lower cover 11 is also rectangular. The frame 30 is also rectangular in shape, and a baffle 31 extending away from a first side of the frame 30 (the side may be defined as the first side of the frame 30) is provided on opposite sides of the first side of the frame 30. The two baffles 31 are identical in shape and size, are both designed into strips, each baffle 31 is aligned with the edge of the corresponding frame 30, and two ends of each baffle 31 are aligned with two ends of the corresponding frame 30.

The cartridge 2 is disposed on a first side of the housing 30. The baffle 31 may be provided with a clip, and the end of each trough in the filter element 2 is clamped by the clip. Each peak of the filter element 2 has one end defined in one baffle 31 and the other end defined in the other baffle 31. Both side openings of the through cavity 200 formed by the space in the peak are exposed.

After the filter element 2 and the filter element bracket 3 are assembled, the filter element bracket 3 and the filter element 2 thereon are jointly arranged in the cavity of the lower cover 11, and the frame body 30 is clamped in the cavity. One side of the through cavity 200 is opened toward the air inlet 100, and the other side is opened toward the air outlet 101. In this way, the filter element 2 is divided into a structure in which the filter element holder 3 is not aligned with the hole, that is, the dirty-side air of the internal combustion engine enters from the through chamber 200 toward the opening of the intake port 100, and flows out from the through chamber 200 toward the opening of the outlet port 101.

The outer surface of the baffle 31 is sleeved with a sealing ring 4 used for being in sealing connection with the shell 1. The sealing ring 4 is sleeved on the baffle 31. After the filter element 2 and the filter element bracket 3 are assembled, the filter element bracket 3 and the filter element 2 thereon are jointly arranged in the cavity of the lower cover 11, and the frame body 30 is clamped in the cavity. One side of the through cavity 200 is opened toward the air inlet 100, and the other side is opened toward the air outlet 101. And then the upper cover 10 and the lower cover 11 are fixed, and the sealing ring 4 is sealed with the upper cover 10 and the lower cover 11.

The air cleaner has a structure in which the filter element 2 is divided into a pair of non-holes by the filter element holder 3, that is, the dirty-side air of the internal combustion engine enters from the through chamber 200 toward the opening of the intake port 100, and flows out from the through chamber 200 toward the opening of the outlet port 101.

When the dirty-side air that enters from the through-chamber 200 toward the opening of the intake port 100 passes through the filter element 2, the dirty-side air is cleaned by each through-chamber 200 in the filter element 2; meanwhile, as each through cavity 200 in the filter element 2 is folded by filter paper, the filter element 2 is equivalent to an impedance composite silencer, noise is transmitted back and forth in each through cavity 200, and the noise reduction effect is obvious.

Except that the filter element 2 and the filter element support 3 adopt the above structure, the filter element 2 and the filter element support 3 are made of the same plastic material, and are connected into a whole in an injection molding mode, so that the structure is simple, and the manufacturing is convenient.

After other embodiments, a baffle may be added in the cavity of the housing 1 to reduce air intake resistance and improve the performance of the internal combustion engine.

Conventional air cleaners require a sufficient Z-height arrangement of the filter elements, and current cabin space arrangements are becoming more compact, with air cleaners typically being arranged on either side of the cabin or on top of the engine, making it difficult to have a sufficient space arrangement.

One part of the conventional air cleaner is connected with the clean air pipe on the engine side, and the other part is connected with the dirty side air pipe. The air filter is limited by the space of the engine cabin, the silencing volume is difficult to reach the design requirement, the noise is difficult to reach the standard, and silencing elements such as a resonant cavity or a broadband silencer and the like are required to be added to the air filter or an air inlet pipeline; however, the increase of the silencing element and the limitation of the trend of the air inlet pipeline also bring the risk of higher air inlet resistance.

In summary, the air filter in the application can solve the problems of difficult arrangement caused by insufficient space and noise reduction of low-frequency noise of an air inlet system in the arrangement process of the air filter.

The air cleaner in the present application includes a housing 1 and a filter cartridge 2, wherein a cavity is defined in the housing 1, an air inlet 100 and an air outlet 101 communicating with the cavity to allow air to enter and exit. A filter cartridge 2 is fixed in the cavity, the filter cartridge 2 defining a plurality of through cavities 200 for the passage of gas; one end of each through cavity 200 opens toward the air inlet 100, and the other end opens toward the air outlet 101.

The overall shape of the housing 1 is rectangular and is assembled from opposing upper and lower covers 10, 11. Wherein, the lower cover 11 is provided with a cavity for accommodating the filter element 2, and the top of the lower cover 11 is provided with an opening communicated with the cavity, thereby being convenient for loading the filter element 2 into the cavity. The lower cover 11 has an air inlet 100 on one side and an air outlet 101 on the other side on opposite sides.

The filter element 2 is corrugated, and the space in the crest constitutes a through cavity 200. The wave crest and the wave trough of the filter element 2 are rectangular, so that the integral configuration of the filter element 2 is presented asThe shape, thereby making the overall construction of the filter cartridge 2 more regular.

The filter element 2 is folded into a corrugated shape by filter paper. The filter element bracket 3 comprises a bracket body 30 and a baffle plate 31 which is convexly arranged on the first side of the bracket body 30 and is opposite to the bracket body, the filter element 2 is fixed on the first side of the bracket body 30, and two ends of each wave crest in the filter element 2 are respectively limited in one baffle plate 31.

The filter element 2 is fixed on the filter element support 3, and the filter element support 3 and the filter element 2 are jointly fixed in a cavity in the lower cover 11.

The air filter has the characteristic of high space utilization rate, can be shaped or integrated on the engine cover according to the cabin boundary, and has a compact structure.

The filter element 2 penetrates through the whole air filter, the utilization rate is high, the filter paper can be compounded with a carbon layer, oil-water vapor dissipated into an air inlet system by the oil-gas separator is effectively filtered when the engine is stopped, and the requirements of the next-stage evaporation emission regulation are met.

Note that: all the shapes of the elements can be selected according to the actual requirements, and all the embodiments obtained by the person skilled in the art without making any creative effort fall within the protection scope of the present invention.

While the invention has been described with reference to several exemplary embodiments, it is to be understood that the terminology used is intended to be in the nature of words of description and of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. An air cleaner, comprising:

the filter element is fixed in the cavity; the filter element defines a plurality of through cavities through which the gas passes; one end opening of each through cavity faces the air inlet, the other end opening faces the air outlet, the filter element is corrugated, and the space in the wave crest forms the through cavity; at least part of wave crests in the filter element are provided with notches.

2. The air cleaner of claim 1, wherein the filter element is corrugated by filter paper.

3. The air cleaner of claim 2, wherein the outer surface of the filter paper has a carbon layer attached thereto.

4. The air cleaner of claim 3, further comprising a cartridge holder secured within the cavity, the cartridge being secured to the cartridge holder.

5. The air cleaner of claim 4, wherein the cartridge holder includes a frame and opposing baffles projecting from a first side of the frame, the cartridge being secured to the first side of the frame with each of the peaks of the cartridge being defined within one of the baffles at each end.

6. The air cleaner of claim 5, wherein an outer surface of the baffle is sleeved with a seal ring for sealing connection with the housing.

7. The air cleaner of claim 1, wherein the peaks and valleys of the filter element are rectangular.

8. The air cleaner of claim 1, wherein the housing is assembled from opposing upper and lower covers.