Air cleaner and engine

Abstract

The utility model discloses an air filter and engine. The air filter includes the air inlet pipe, filter device and air outlet pipe that connect gradually, still includes electrostatic adsorption device and self -cleaning subassembly. Electrostatic adsorption device sets up in the air inlet pipe, and includes dust adsorption subassembly and with dust adsorption subassembly connects electrostatic generator. Self -cleaning subassembly includes air compressor and is used for cleaning dust adsorption subassembly's air nozzle, and air nozzle is connected with air compressor. The utility model discloses air filter can capture tiny particulate matter, and the filtration efficiency is high, can reduce the jam probability of filter device, need not frequently replace filter device, reduce maintenance cost.

Description

Technical Field

[0001] This utility model belongs to the field of air filtration technology, and in particular relates to an air filter and an engine. Background Technology

[0002] Air filters are mainly used in pneumatic machinery, internal combustion machinery and other fields. Their function is to provide clean air to these machines to prevent them from inhaling air containing impurities during operation, which would increase the chance of abrasion and damage.

[0003] An air filter mainly consists of a filter element and a housing. The filter element is the most important part, responsible for filtering the air, while the housing is the external structure that provides necessary protection for the filter element. The requirements for an air filter are to perform high-efficiency air filtration, not to create excessive resistance to airflow, and to operate continuously for extended periods.

[0004] Existing air filters primarily employ mechanical filtration technology, with filter elements mainly consisting of paper or fiber. Paper and fiber filters have the following drawbacks: 1. Low filtration efficiency for fine particulate matter (such as PM2.5); 2. Prone to clogging during use, leading to increased intake resistance and affecting engine performance; 3. Requires regular replacement or cleaning, increasing maintenance costs and operational complexity; 4. Filter lifespan is significantly shortened in dusty environments. Therefore, existing air filters suffer from low filtration efficiency, frequent maintenance, and unsuitability for harsh environments. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in the related art.

[0006] An air filter, comprising:

[0007] The air inlet pipe, filter device, and air outlet pipe are connected in sequence.

[0008] An electrostatic adsorption device, wherein the electrostatic adsorption device is disposed in the air inlet pipe and includes a dust adsorption component and an electrostatic generator connected to the dust adsorption component; and

[0009] The self-cleaning component includes an air compressor and an air nozzle for cleaning the dust adsorption component, the air nozzle being connected to the air compressor.

[0010] In some embodiments, the dust adsorption assembly includes a filter screen connected to the electrostatic generator and rotatably connected to the air intake pipe.

[0011] In some embodiments, the dust adsorption assembly further includes a bearing rotatably connected to the air intake pipe, and the filter screen is fixedly connected to the bearing, with the plane of the filter screen being parallel to the axial direction of the bearing.

[0012] In some embodiments, the air filter further includes a controller, a pressure sensor, and a valve. The pressure sensor is disposed in the air intake pipe and is electrically connected to the controller. The valve is disposed at the connection between the air nozzle and the air compressor and is electrically connected to the controller.

[0013] In some embodiments, the self-cleaning assembly further includes a hose having a first end and a second end, the first end being connected to the air compressor and the second end being connected to the air nozzle, and the valve being disposed on the hose.

[0014] In some embodiments, the valve includes a manual valve, an electric valve, or a solenoid valve.

[0015] In some embodiments, the filtration device includes a housing and a filtration assembly disposed inside the housing. The filtration assembly includes a multi-layer composite filter element and a support structure. The support structure is connected to the housing, and the multi-layer composite filter element is connected to the support structure.

[0016] In some embodiments, the multilayer composite filter element includes an outer layer, a middle layer, and an inner layer, wherein the outer layer includes filter foam, the middle layer includes polypropylene fibers, and the inner layer includes a nanofiber membrane.

[0017] In some embodiments, a first flange is provided at the end of the air intake pipe away from the filter device.

[0018] In some embodiments, a second flange is provided at the end of the air outlet pipe away from the filter device.

[0019] An engine includes the air filter described above and an engine body, the engine body being connected to the intake manifold and the engine body being connected to the exhaust manifold.

[0020] The air filter provided in this application includes an intake pipe, a filter device, and an outlet pipe connected in sequence, as well as an electrostatic adsorption device and a self-cleaning component. The electrostatic adsorption device is located in the intake pipe. After the airflow enters the intake pipe, it is first cleaned by the dust adsorption component and simultaneously becomes charged. Through the adsorption of electrodes, it collects dust particles from the airflow, improving the filtration efficiency for fine particulate matter. The self-cleaning component includes an air compressor that releases a strong airflow through air nozzles. The airflow impacts the dust adsorption component, cleaning it. By incorporating the electrostatic adsorption device and the self-cleaning component, the airflow is cleaned before entering the filter device. Therefore, this air filter not only captures fine particulate matter, resulting in high filtration efficiency and reducing the likelihood of filter clogging, but also eliminates the need for frequent filter replacements, reducing maintenance costs. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of an air filter provided in one embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of a dust adsorption component provided in one embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of a filtration device provided in one embodiment of the present invention.

[0025] The annotations in the attached figures are explained as follows:

[0026] 10. Air filter;

[0027] 1. Intake pipe; 11. First flange;

[0028] 2. Filtering device; 21. Housing; 22. Filtering assembly; 221. Support structure; 222. Multi-layer composite filter element; 2221. Outer layer; 2222. Middle layer; 2223. Inner layer;

[0029] 3. Exhaust pipe; 31. Second flange;

[0030] 4. Electrostatic adsorption device; 41. Dust adsorption assembly; 411. Filter screen; 412. Bearing; 42. Electrostatic generator;

[0031] 5. Self-cleaning component; 51. Air compressor; 52. Air nozzle; 53. Hose;

[0032] 6. Controller;

[0033] 7. Pressure sensor;

[0034] 8. Valves. Detailed Implementation

[0035] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.

[0036] The terms "first," "second," and "third" used in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movement of components in a specific posture (as shown in the figures). If the specific posture changes, the directional indication will also change accordingly. The terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0037] Please see Figure 1 An air filter 10 includes an inlet pipe 1, a filter device 2, and an outlet pipe 3 connected in sequence, as well as an electrostatic adsorption device 4 and a self-cleaning assembly 5. The electrostatic adsorption device 4 is disposed in the inlet pipe 1 and includes a dust adsorption assembly 41 and an electrostatic generator 42 connected to the dust adsorption assembly 41. The self-cleaning assembly 5 includes an air compressor 51 and an air nozzle 52 for cleaning the dust adsorption assembly 41. The air nozzle 52 is connected to the air compressor 51.

[0038] In some embodiments, the intake pipe 1 can be either a cylindrical tubular structure or an elliptical cylindrical tubular structure. Optionally, the intake pipe 1 is a cylindrical tubular structure.

[0039] In some embodiments, the intake pipe 1 may be made of a metal material, but is not limited to. For example, the intake pipe 1 may be made of an aluminum alloy.

[0040] In some embodiments, the exhaust pipe 3 can be either a cylindrical tubular structure or an elliptical cylindrical tubular structure. The shape of the exhaust pipe 3 can be the same as or different from that of the intake pipe 1. Optionally, the exhaust pipe 3 is a cylindrical tubular structure.

[0041] In some embodiments, the exhaust pipe 3 may be made of, but is not limited to, a metal material. The material of the exhaust pipe 3 may be the same as that of the intake pipe 1, or it may be a different material. For example, the exhaust pipe 3 may be made of aluminum alloy.

[0042] The connection between the air intake pipe 1 and the filter device 2 can be either a fixed connection or a detachable connection. Fixed connections can be made using, but are not limited to, welding, while detachable connections can be made using threaded or snap-fit ​​interfaces.

[0043] The connection between the air outlet pipe 3 and the filter device 2 can be either a fixed connection or a detachable connection. The fixed connection can be achieved by, but is not limited to, welding, while the detachable connection can be achieved by a threaded interface or a snap-fit ​​interface.

[0044] In some embodiments, the filter 411 can be either circular or elliptical. Optionally, the filter 411 is circular.

[0045] The electrostatic generator 42 is a device that can generate a high-voltage electrostatic field, and the air compressor 51 is a device that converts mechanical energy into gas pressure energy. Both the electrostatic generator 42 and the air compressor 51 are existing technologies and will not be described in detail here.

[0046] In summary, the air filter 10 provided in this application includes an inlet pipe 1, a filter device 2, and an outlet pipe 3 connected in sequence, as well as an electrostatic adsorption device 4 and a self-cleaning component 5. The electrostatic adsorption device 4 is disposed in the inlet pipe 1. After the airflow enters the inlet pipe 1, it is first cleaned by the dust adsorption component 41 and simultaneously becomes charged. Through the adsorption effect of the electrodes, it collects dust in the airflow, thereby improving the filtration efficiency for fine particulate matter. The self-cleaning component 5 includes an air compressor 51, which releases a strong airflow through an air nozzle 52. The airflow impacts the dust adsorption component 41, cleaning it. By incorporating the electrostatic adsorption device 4 and the self-cleaning component 5, the airflow is cleaned before entering the filter device 2. Therefore, this air filter 10 not only captures fine particulate matter, resulting in high filtration efficiency and reducing the likelihood of clogging of the filter device 2, but also eliminates the need for frequent replacement of the filter device 2, reducing maintenance costs.

[0047] Please see Figure 1 and Figure 2 In some embodiments, the dust adsorption assembly includes a filter 411 connected to an electrostatic generator 42 and rotatably connected to an air intake pipe 1. By rotatably connecting the filter 411 to the air intake pipe 1, the angle between the filter 411 and the air intake pipe 1 can be adjusted, thereby adjusting the airflow area in the air intake pipe 1 and thus adjusting the air intake resistance.

[0048] In some embodiments, the dust adsorption assembly 41 further includes a bearing 412, which is rotatably connected to the air inlet pipe 1. A filter screen 411 is fixedly connected to the bearing 412, and the plane of the filter screen 411 is parallel to the axial direction of the bearing 412. By setting the bearing 412 to be rotatably connected to the air inlet pipe 1 and the filter screen 411 to be fixedly connected to the bearing 412, and making the plane of the filter screen 411 parallel to the axial direction of the bearing 412, the angle between the filter screen 411 and the air inlet pipe 1 can be adjusted when the bearing 412 rotates. The structure is simple and the operation is convenient.

[0049] In some embodiments, the air filter 10 further includes a controller 6, a pressure sensor 7, and a valve 8. The pressure sensor 7 is disposed in the intake pipe 1 and is electrically connected to the controller 6. The valve 8 is disposed at the connection between the air nozzle 52 and the air compressor 51 and is electrically connected to the controller 6. By configuring the controller 6, the pressure sensor 7, and the valve 8, the pressure sensor 7 can detect the pressure generated by the airflow in the intake pipe 1. When the detected airflow pressure is less than a preset value, the controller 6 controls the valve 8 to open, and the air compressor 51 releases a strong airflow through the air nozzle 52. The airflow impacts the filter screen 411, causing dust to detach from the filter screen 411. When the pressure sensor 7 detects that the airflow pressure is greater than the preset value, the controller 6 controls the valve 8 to close.

[0050] Controller 6 may be, but is not limited to, a computer control module (ECU, electronic control unit).

[0051] The pressure sensor 7 can be either a piezoresistive pressure sensor or a capacitive pressure sensor. Optionally, the pressure sensor 7 is a piezoresistive pressure sensor.

[0052] In some embodiments, the dust adsorption assembly 41 further includes a drive element, the output end of which is connected to the bearing 412, and the drive element is used to drive the bearing 412 to rotate. The controller 6 is electrically connected to the drive element.

[0053] Optionally, the drive element may be, but is not limited to, a motor.

[0054] In some embodiments, the self-cleaning assembly 5 further includes a hose 53 having a first end and a second end. The first end is connected to the air compressor 51, and the second end is connected to the air nozzle 52. A valve 8 is disposed on the hose 53. By configuring the hose 53 so that the first end of the hose 53 is connected to the air compressor 51 and the second end of the hose 53 is connected to the air nozzle 52, on the one hand, the air nozzle 52 can be connected to the air compressor 51, and on the other hand, the distance between the air nozzle 52 and the air compressor 51 can be adjusted, which facilitates the setting of the air nozzle 52 corresponding to the filter screen 411.

[0055] In some embodiments, valve 8 includes a manual valve, an electric valve, or a solenoid valve. By configuring valve 8 to include a manual valve, an electric valve, or a solenoid valve, it is convenient to control the opening and closing of valve 8 using controller 6.

[0056] Optionally, valve 8 is a solenoid valve.

[0057] Please see Figure 3In some embodiments, the filter device 2 includes a housing 21 and a filter assembly 22 disposed inside the housing 21. The filter assembly 22 includes a multi-layer composite filter element 222 and a support structure 221. The support structure 221 is connected to the housing 21, and the multi-layer composite filter element 222 is connected to the support structure 221. By providing the housing 21, the filter assembly 22 inside the housing 21 can be mechanically protected, preventing external particles from entering the filtration area. By providing the filter assembly 22 with the support structure 221 and the multi-layer composite filter element 222, the support structure 221 can support the multi-layer composite filter element 222, preventing the multi-layer composite filter element 222 from deforming under the pressure of airflow.

[0058] In some embodiments, the housing 21 may be made of, but is not limited to, a high-temperature resistant and corrosion-resistant material. Optionally, the housing 21 may be made of high-strength engineering plastics or aluminum alloys. Housings 21 made of the above materials can have a long service life in harsh environments.

[0059] In some embodiments, the housing 21 may be a cylindrical structure or a polygonal structure. Optionally, the housing 21 may be a cylindrical structure.

[0060] The support structure 221 can be fixedly connected to the housing 21 or detachably connected to the housing 21.

[0061] In some embodiments, the support structure 221 is detachably connected to the housing 21. When the support structure 221 is damaged, it can be removed from the housing 21 for repair or replacement, thus avoiding the entire filter device 2 becoming unusable due to damage to the support structure 221 and reducing costs.

[0062] The multi-layer composite filter element 222 can be fixedly connected to the support structure 221 or detachably connected to the support structure 221.

[0063] In some embodiments, the multilayer composite filter element 222 is detachably connected to the support structure 221. When the multilayer composite filter element 222 is damaged, it can be removed from the support structure 221 for repair or replacement, thus avoiding the entire filter assembly 22 becoming unusable due to damage to the multilayer composite filter element 222 and reducing costs.

[0064] In some embodiments, the multilayer composite filter element 222 includes an outer layer 2221, a middle layer 2222, and an inner layer 2223. The outer layer 2221 includes filter foam, the middle layer 2222 includes polypropylene fibers, and the inner layer 2223 includes a nanofiber membrane. The outer layer 2221, by including filter foam, is used to capture large particles. The middle layer 2222, by including polypropylene fibers, is used to capture medium-sized dust and impurities. The inner layer 2223, by including a nanofiber membrane, is used to capture small particles.

[0065] Please see Figure 1 In some embodiments, a first flange 11 is provided at the end of the air intake pipe 1 away from the filter device 2. By providing a first flange 11 at the end of the air intake pipe 1 away from the filter device 2, it is convenient to connect the air intake pipe 1 to external equipment.

[0066] In some embodiments, a second flange 31 is provided at the end of the air outlet pipe 3 away from the filter device 2. By providing a second flange 31 at the end of the air outlet pipe 3 away from the filter device 2, it is convenient to connect the air outlet pipe 3 to external equipment.

[0067] In some embodiments, the air filter 10 further includes an alarm device electrically connected to the controller 6.

[0068] Furthermore, the alarm device can be a buzzer or a warning light.

[0069] Please see Figure 1 and Figure 2 During operation, airflow enters the intake pipe 1, where the filter 411 filters the airflow. An electrostatic generator 42 within the intake pipe 1 charges the airflow, collecting dust particles through electrode adsorption. A pressure sensor 7 within the intake pipe 1 detects the pressure of the airflow passing through the filter 411. When the pressure detected by the pressure sensor 7 is less than a predetermined value (e.g., 200 Pa), the controller 6 opens the valve 8, and the air compressor 51 releases a strong airflow through the air nozzle 52. This airflow impacts the filter 411, causing dust particles to detach and clean the filter 411. After a period of cleaning, when the pressure detected by the pressure sensor 7 exceeds the predetermined value (e.g., 200 Pa), the controller 6 closes the valve 8, stopping the cleaning of the filter 411. When the pressure of the airflow detected by the pressure sensor 7 is still less than the predetermined value (e.g., 200 Pa) after a period of cleaning, the controller 6 controls the drive component to drive the bearing 412 to rotate, which in turn drives the filter 411 to rotate, changing the angle between the filter 411 and the air inlet, reducing the airflow area and reducing the air intake resistance. At the same time, the alarm device triggers an alarm to remind the user to clean or replace the filter 411.

[0070] An engine includes the aforementioned air filter 10 and an engine body. The engine body is connected to an intake pipe 1 and an exhaust pipe 3. Because the engine includes the aforementioned air filter 10, it also has the advantages of being able to capture fine particulate matter, having high filtration efficiency, reducing the likelihood of clogging of the filter device 2, eliminating the need for frequent replacement of the filter device 2, and reducing maintenance costs.

[0071] In the description of this utility model, 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", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0072] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0073] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0074] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0075] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0076] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An air filter, characterized in that, include: The air inlet pipe, filter device, and air outlet pipe are connected in sequence. An electrostatic adsorption device is disposed in the air inlet pipe and includes a dust adsorption component and an electrostatic generator connected to the dust adsorption component. as well as The self-cleaning component includes an air compressor and an air nozzle for cleaning the dust adsorption component, the air nozzle being connected to the air compressor.

2. The air filter according to claim 1, characterized in that, The dust adsorption assembly includes a filter screen connected to the electrostatic generator and rotatably connected to the air inlet pipe.

3. The air filter according to claim 2, characterized in that, The dust adsorption assembly also includes a bearing, which is rotatably connected to the air intake pipe, and the filter screen is fixedly connected to the bearing, with the plane of the filter screen being parallel to the axial direction of the bearing.

4. The air filter according to claim 1, characterized in that, It also includes a controller, a pressure sensor, and a valve. The pressure sensor is located in the air intake pipe and is electrically connected to the controller. The valve is located at the connection between the air nozzle and the air compressor and is electrically connected to the controller.

5. The air filter according to claim 4, characterized in that, The self-cleaning assembly also includes a hose having a first end and a second end, the first end being connected to the air compressor and the second end being connected to the air nozzle, and the valve being disposed on the hose.

6. The air filter according to claim 5, characterized in that, The valves include manual valves, electric valves, or solenoid valves.

7. The air filter according to claim 1, characterized in that, The filtration device includes a housing and a filtration assembly disposed inside the housing. The filtration assembly includes a multi-layer composite filter element and a support structure. The support structure is connected to the housing, and the multi-layer composite filter element is connected to the support structure.

8. The air filter according to claim 7, characterized in that, The multi-layer composite filter element includes an outer layer, a middle layer, and an inner layer. The outer layer includes filter foam, the middle layer includes polypropylene fibers, and the inner layer includes a nanofiber membrane.

9. The air filter according to claim 1, characterized in that, A first flange is provided at the end of the air intake pipe away from the filter device; And / or a second flange is provided at the end of the air outlet pipe away from the filter device.

10. An engine, characterized in that, include: The air filter as described in any one of claims 1-9; as well as An engine body, which is connected to the intake pipe and the exhaust pipe.

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