Blow-down valve, air filter, vehicle and control method of vehicle

Abstract

The invention discloses a blow-down valve, an air filter, a vehicle and a control method of the vehicle, the blow-down valve is used for the air filter of the vehicle, and the blow-down valve comprises a dirt collecting pipe, a sealing assembly and a cleaning part; the dirt collecting pipe is provided with a flow channel and provided with a containing groove in the radial direction, and the containing groove communicates with the flow channel. The sealing assembly is connected to the periphery of the sewage collecting pipe, is suitable for extending into the accommodating groove and clinging to the inner wall of the accommodating groove so as to disconnect the flow channel, and is suitable for retreating from the accommodating groove so as to communicate the flow channel; the cleaning part is connected with the dirt collecting pipe, the cleaning part is provided with an air channel, the air channel communicates with the flow channel, and the cleaning part is suitable for blowing air to the flow channel through the air channel to clean the dirt collecting pipe. The blow-down valve can be used for dust cleaning and wading sealing of the air filter of the vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a sewage valve, an air filter, a vehicle and a control method thereof. Background Art

[0002] At present, when vehicles are driven in desert conditions or dusty areas, it is often necessary to disassemble the air filter to clean the sand and dust. The cleaning frequency is much higher than the frequency of filter element maintenance. However, if the sand and dust in the air filter is not cleaned in time, the filter element will always be in a high-concentration dust environment. At the same time, the requirements for wading performance of vehicles are getting higher and higher. In actual use, the leakage holes of the air filter are an important hard point of the vehicle's wading performance.

[0003] Existing air filters cannot take into account both sand and dust cleaning and water sealing, which affects the service life of the air filter and the vehicle engine. Summary of the invention

[0004] The object of the present invention is to provide a drain valve, an air filter, a vehicle and a control method thereof, so as to solve the problem that the air filter of the vehicle cannot take into account both sand and dust cleaning and water sealing.

[0005] To achieve the purpose of the present invention, the present invention provides the following technical solutions:

[0006] In a first aspect, the present invention provides a drain valve for an air filter of a vehicle, comprising:

[0007] A sewage collecting pipe having a flow channel, wherein the sewage collecting pipe is provided with a receiving groove in a radial direction, and the receiving groove is communicated with the flow channel;

[0008] A sealing assembly connected to the outer periphery of the sewage collecting pipe, adapted to extend into the receiving groove and closely adhere to the inner wall of the receiving groove to disconnect the flow channel, and adapted to withdraw from the receiving groove to connect the flow channel;

[0009] A cleaning member is connected to the sewage collecting pipe, wherein the cleaning member has an air passage, the air passage is communicated with the flow passage, and the cleaning member is suitable for blowing air to the flow passage through the air passage to clean the sewage collecting pipe.

[0010] In one embodiment, the sealing assembly includes a sealing plug and a sealing shell, the sealing shell is connected to the sewage collecting pipe, the sealing plug is connected to one end of the sealing shell, and the sealing plug is suitable for telescopic movement relative to the sealing shell along the radial direction of the sewage collecting pipe to extend into or exit the receiving groove.

[0011] In one embodiment, the sewage collecting pipe includes a pipe body and a mounting portion, the flow channel and the receiving groove are both provided in the pipe body, the mounting portion is provided on the outer peripheral surface of the pipe body and is located around the receiving groove, and the sealing shell is connected to the mounting portion.

[0012] In one embodiment, the flow channel penetrates the inner wall of the receiving groove to form a flow channel opening, and the inner wall of the receiving groove is provided with an annular convex rib, and the annular convex rib surrounds the flow channel opening.

[0013] In one embodiment, along the depth direction of the receiving groove, the radial dimension of the receiving groove gradually decreases.

[0014] In one embodiment, the cleaning member comprises a vent pipe and a valve, wherein the vent pipe is connected to the sewage collecting pipe, the vent pipe has the air channel, and the valve is suitable for controlling the connection between the air channel and the flow channel and the gas flow rate.

[0015] In one embodiment, the sewage collecting pipe has a first end, the ventilation pipe is arranged between the first end and the receiving groove, there is an angle between the ventilation pipe and the sewage collecting pipe, the ventilation pipe extends in a direction away from the receiving groove, and the ventilation pipe is suitable for blowing air toward the inner wall of the receiving groove through the air channel.

[0016] In a second aspect, the present invention provides an air filter, comprising a first shell, a second shell, a filter element and a drain valve as described in any one of the first aspects, the first shell and the second shell are connected, the filter element is arranged between the first shell and the second shell, the filter element and the first shell enclose a first cavity, and the sewage collecting pipe is connected to the second shell.

[0017] In a third aspect, the present invention provides a vehicle, comprising the air filter as described in the second aspect, wherein the air filter is suitable for transmitting gas to an engine.

[0018] In a fourth aspect, the present invention provides a method for controlling a vehicle, wherein the vehicle is the vehicle according to the third aspect, comprising:

[0019] Controlling the operation of the sealing assembly according to the wading depth of the vehicle, and detecting the pressure of the air passage when the wading depth of the vehicle is less than a preset depth;

[0020] When the pressure of the air channel is greater than or equal to a first preset pressure, the sealing component withdraws from the receiving groove, and the flow channel is connected;

[0021] The cleaning member blows air toward the flow channel to clean the sewage collecting pipe.

[0022] In one embodiment, detecting the airway pressure includes:

[0023] When the pressure of the air channel is less than the first preset pressure, the sealing assembly extends into the receiving groove and the flow channel is disconnected;

[0024] After each preset time interval, the pressure of the airway is detected.

[0025] In one embodiment, the cleaning member blows air into the flow channel to clean the sewage collecting pipe, comprising:

[0026] When the pressure of the air passage is greater than or equal to the first preset pressure, the time interval between the first start of blowing of the cleaning element and the last end of blowing of the cleaning element is less than or equal to the first preset time, and the number of times the cleaning element blows air into the sewage collecting pipe is greater than or equal to the first preset number, the vehicle issues a first alarm;

[0027] According to the first alarm, the filter element is checked, and the sewage collecting pipe and the second shell are cleaned.

[0028] In one embodiment, cleaning the sewage collecting pipe and the second shell further includes:

[0029] detecting the pressure of the airway;

[0030] When the pressure of the airway is less than the first preset pressure, continuously detecting the pressure of the first cavity;

[0031] When the number of times that the pressure of the first chamber is detected to be greater than or equal to the second preset pressure within the second preset time is greater than or equal to the second preset number of times, the vehicle issues a second alarm;

[0032] The second housing and the filter element are cleaned according to the second alarm.

[0033] The drain valve of the present invention is used for the air filter of a vehicle. The drain valve is provided with a sealing component, which can seal or unseal the sewage collecting pipe. The sealing component can seal the sewage collecting pipe to prevent water from entering the engine from the air filter, thereby realizing the sealing of the vehicle's air filter in wading conditions. The drain valve is also provided with a cleaning component, which can blow air into the sewage collecting pipe to clean the sewage collecting pipe, thereby realizing sand and dust cleaning of the vehicle's air filter. Therefore, the drain valve of the present invention can take into account both sand and dust cleaning and wading sealing of the air filter, thereby extending the service life of the air filter and the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 is a side view of an air filter of an embodiment;

[0036] Figure 2 is a cross-sectional view of an air filter according to an embodiment;

[0037] Figure 3 is an exploded view of an air filter of an embodiment;

[0038] Figure 4 is a partial cross-sectional view of an air filter according to an embodiment;

[0039] Figure 5 is a partial flow chart of a vehicle control method according to an embodiment;

[0040] Figure 6 The present invention is a flow chart of a method for controlling a vehicle according to an embodiment.

[0041] Description of reference numerals:

[0042] 100-air filter, 10-drain valve, 11-drain collecting pipe, 111-flow channel, 112-receiving groove, 1121-flow channel outlet, 1122-annular convex rib, 113-tube body, 114-mounting portion, 115-first end, 12-sealing assembly, 121-sealing plug, 122-sealing shell, 123-sealing gasket, 13-cleaning member, 131-air channel, 132-ventilation pipe, 20-first shell, 21-first top plate, 22-first connecting hole, 30-second shell, 31-second top plate, 32-first side plate, 321-second connecting hole, 40-filter element, 50-first cavity. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0045] Unless otherwise defined, all technical and scientific terms used in the present invention have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in the present invention includes any and all combinations of one or more of the related listed items.

[0046] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0047] For reference Figure 1 , Figure 2 and Figure 3 The present invention provides an air filter 100, including a drain valve 10, a first shell 20, a second shell 30 and a filter element 40, the first shell 20 and the second shell 30 are connected, the filter element 40 is arranged between the first shell 20 and the second shell 30, the filter element 40 and the first shell 20 enclose a first cavity 50, and the sewage collecting pipe 11 is connected to the second shell 30.

[0048] The air filter can be plate-type, cartridge-type, etc., without limitation. The cross-sectional shape corresponding to the first cavity 50 can be rectangular, circular, etc.

[0049] The material of the first shell 20 and the second shell 30 can be a material with a certain structural strength, such as high-strength plastic, aluminum alloy, stainless steel, etc., specifically PP+TD20 (20% mineral filler is added to polypropylene, and the mineral filler can be talcum powder, etc.) or PP+GF30 (30% glass fiber is added to polypropylene). The first shell 20 and the second shell 30 can be an integrated structure, that is, an integrated structure made by an integrated molding process, and the integrated molding process can be specifically stamping, casting, etc., without limitation. The first shell 20 and the second shell 30 can also be a split structure, that is, a plurality of plates are connected and fixed by welding, screwing, clamping, bonding, etc.

[0050] For reference Figure 1 and Figure 3 The first housing 20 has a first top plate 21, and the second housing 30 has a second top plate 31. The first top plate 21 and the second top plate 31 are arranged opposite to each other. The second top plate 31 can be a flat plate, a curved plate, etc., without limitation. When the air filter 100 is working, the second top plate 31 is closer to the ground than the first top plate 21, and the straight-line distances between each point of the second top plate 31 and the ground are different, that is, there is an angle between the second top plate 31 and the ground. The drain valve 10 is arranged in the area closest to the ground on the second top plate 31, so that the drain valve 10 can easily collect pollutants such as sand and dust naturally.

[0051] The inner wall surface of the first shell 20 is provided with reinforcing ribs to improve the rigidity of the first shell 20 and reduce the vibration noise generated by the impact of the intake airflow. The thickness of the reinforcing ribs is less than or equal to the wall thickness of the first shell 20.

[0052] The material of the filter element 40 can be paper filter material, micro glass fiber filter material, polyester fiber filter material, activated carbon filter material, HEPA filter element (high efficiency particulate filter element), particulate filter element, electrostatic filter element, fiber filter element, UVC lamp filter element (deep ultraviolet lamp filter element) and photocatalyst filter element, etc., without limitation.

[0053] The filter element 40 and the first housing 20 may be connected by bonding, clamping, etc., without limitation.

[0054] The pressure Z in the first cavity 50 can be regarded as the engine intake resistance. The air filter is also provided with a third detection component, which is used to detect the pressure of the first cavity 50 and send information to the terminal. The third detection component can be an air pressure sensor or the like.

[0055] The inner wall surface of the second housing 30 facing the first housing 20 is smooth, which is convenient for cleaning impurities such as dust. A first connecting hole 22 is provided on the first top plate 21 of the first housing 20, and the first connecting hole 22 is connected to the engine to deliver the airflow filtered by the filter element 40 to the engine. The second housing 30 includes a first side plate 32, one end of the first side plate 32 is connected to the second top plate 31, and the other end of the first side plate 32 is connected to the first housing 20. A second connecting hole 321 is provided on the first side plate 32, and the second connecting hole 321 is connected to the outside of the air filter 100. The airflow enters the interior of the air filter 100 from the second connecting hole 321. After the filter element 40 filters dust, gravel, etc. in the gas, the airflow enters the first chamber 50 and enters the engine through the first connecting hole 22, ensuring that sufficient and clean air enters the cylinder of the engine, which is conducive to extending the service life of the engine.

[0056] For reference Figure 1 , Figure 2 and Figure 3 The present invention provides a drain valve 10, which is used for an air filter 100 of a vehicle. The drain valve 10 includes a sewage collecting pipe 11, a sealing assembly 12 and a cleaning member 13. The sewage collecting pipe 11 has a flow channel 111, and a receiving groove 112 is radially opened in the sewage collecting pipe 11, and the receiving groove 112 is connected to the flow channel 111. The sealing assembly 12 is connected to the outer periphery of the sewage collecting pipe 11, and is suitable for extending into the receiving groove 112 and tightly abutting against the inner wall of the receiving groove 112 to disconnect the flow channel 111, and is suitable for withdrawing from the receiving groove 112 to connect the flow channel 111. The cleaning member 13 is connected to the sewage collecting pipe 11, and the cleaning member 13 has an air channel 131, and the air channel 131 is connected to the flow channel 111. The cleaning member 13 is suitable for blowing air into the flow channel 111 through the air channel 131 to clean the sewage collecting pipe 11.

[0057] The material of the sewage collecting pipe 11 can be PVC (polyvinyl chloride), PE (polyethylene), PP (polypropylene) and galvanized steel, etc., so that the sewage collecting pipe 11 has corrosion resistance, wear resistance and other properties. The cross-sectional shape of the flow channel 111 can be circular, rectangular, etc., without limitation.

[0058] The receiving groove 112 is suitable for receiving the sealing assembly 12 so that the flow channel 111 can be switched between the connected and disconnected states. The disconnection of the flow channel 111 can prevent water from entering the engine from the air filter 100. When the flow channel 111 is connected, the pollutants in the second housing 30 enter the sewage collecting pipe 11 due to gravity. The cleaning member 13 blows air to the flow channel 111 through the air channel 131 to clean the pollutants in the sewage collecting pipe 11, thereby cleaning the air filter 100 and reducing the replacement of the filter element 40 of the air filter 100.

[0059] The dirt collecting pipe 11 can store part of the pollutants of the air filter 100, thereby preventing dust and the like from being continuously adsorbed by the air filter 100, blocking the filter element 40, and affecting the power performance of the vehicle.

[0060] The drain valve 10 of the present invention is used for the air filter 100 of the vehicle. The drain valve 10 is provided with a sealing component 12, which can seal or unseal the sewage collecting pipe 11. The sealing component 12 can seal the sewage collecting pipe 11 to prevent water from entering the engine from the air filter 100, thereby realizing the sealing of the vehicle's air filter 100 in wading conditions. The drain valve 10 is also provided with a cleaning component 13, which can blow air into the sewage collecting pipe 11 to clean the sewage collecting pipe 11, thereby realizing the sand and dust cleaning of the vehicle's air filter 100. Therefore, the drain valve 10 of the present invention can take into account the sand and dust cleaning and wading sealing of the air filter 100, thereby extending the service life of the air filter 100 and the engine.

[0061] For reference Figure 3 In one embodiment, the sealing assembly 12 includes a sealing plug 121 and a sealing shell 122. The sealing shell 122 is connected to the sewage collecting pipe 11. The sealing plug 121 is connected to one end of the sealing shell 122. The sealing plug 121 is suitable for telescopic movement relative to the sealing shell 122 along the radial direction of the sewage collecting pipe 11 to extend into or exit the receiving groove 112.

[0062] The sealing plug 121 is connected to an end of the sealing shell 122 away from the sewage collecting pipe 11 .

[0063] The sealing plug 121 can be an airbag, a rubber plug, a PTFE (polytetrafluoroethylene) sealing plug 121, a metal sealing plug 121 (the metal material can be copper, iron, stainless steel, etc.), a plastic sealing plug 121 (the type of plastic can be polyethylene, polypropylene, etc.), an elastomer sealing plug 121 (specifically, it can be silicone, polyurethane, etc.). Specifically, the airbag extends into the receiving groove 112 in the case of stamping to disconnect the flow channel 111; the airbag withdraws from the receiving groove 112 in the case of depressing to connect the flow channel 111.

[0064] Optionally, when the sealing plug 121 is an airbag, the integral molding process of the sealing plug 121 and the sealing shell 122 may be vulcanization, so that the sealing component 12 has the durability of sealing, resistance to positive / negative pressure and repeated concave and convex.

[0065] The sealing component 12 can seal or unseal the sewage collecting pipe 11. The sealing component 12 can seal the sewage collecting pipe 11 to prevent water from entering the engine from the air filter 100, thereby realizing the sealing of the vehicle's air filter 100 in wading conditions. The sealing component 12 withdraws from the receiving groove 112 to realize the connection of the flow channel 111, making it convenient for the cleaning component 13 to clean the sewage collecting pipe 11.

[0066] For reference Figure 3 In one embodiment, the sewage collecting pipe 11 includes a pipe body 113 and a mounting portion 114, the flow channel 111 and the receiving groove 112 are both provided in the pipe body 113, the mounting portion 114 is provided on the outer peripheral surface of the pipe body 113 and is located around the receiving groove 112, and the sealing shell 122 is connected to the mounting portion 114.

[0067] The sealing assembly 12 further includes a sealing gasket 123 , which is disposed between the sealing shell 122 and the mounting portion 114 , and is used to enhance the sealing stability between the sealing assembly 12 and the sewage collecting pipe 11 to prevent air leakage, water leakage, and the like.

[0068] The sealing part and the mounting part 114 can be a split structure, that is, the connection between the sealing part and the mounting part 114 can be screwed, clamped, bonded, etc., without limitation. Optionally, the mounting part 114 is provided with threads, and the sealing shell 122 is correspondingly provided with threads, and the connection between the two is threaded connection.

[0069] The installation portion 114 is provided to facilitate the installation and connection stability of the sealing assembly 12 and the sewage collecting pipe 11, simplify the manufacturing process of the sewage valve 10, and at the same time, it is also convenient for disassembly, inspection, replacement, etc. of the sealing assembly 12, that is, the disassembly and maintainability of the sewage valve 10 is enhanced.

[0070] For reference Figure 4 , Figure 4 for Figure 3In the cross-sectional view at point A, in one embodiment, the flow channel 111 penetrates the inner wall of the receiving groove 112 to form a flow channel opening 1121 , and the inner wall of the receiving groove 112 is provided with an annular convex rib 1122 , and the annular convex rib 1122 surrounds the flow channel opening 1121 .

[0071] The number of the annular ribs 1122 can be one or more. When there are two annular ribs 1122, they are respectively arranged on the opposite side walls of the receiving groove 112 to strengthen the connection strength with the sealing plug 121 when the sealing plug 121 extends into the receiving groove 112, thereby preventing the sealing plug 121 from withdrawing.

[0072] The annular rib 1122 can be a metal annular rib or a non-metallic annular rib. The metal material can be stainless steel, aluminum alloy, copper, etc., and the non-metallic material can be rubber, plastic, plastic, etc., without limitation.

[0073] Optionally, the annular convex rib 1122 may be a circular annular convex rib, a rectangular annular convex rib, a trapezoidal annular convex rib, etc.

[0074] The annular convex rib 1122 is provided to increase the contact area between the sealing plug 121 and the receiving groove 112 , which is beneficial to enhancing the sealing effectiveness of the sealing plug 121 .

[0075] In one embodiment, the annular rib 1122 seal can also be replaced by an inclined surface seal, an inclined disk seal, an inclined cone seal, an inclined ball seal, etc., that is, the side wall of the receiving groove 112 in contact with the sealing plug 121 is changed, the shape and inclination angle of the side wall are changed, or an element for strengthening the sealing is provided on the side wall, which is beneficial to achieving the effectiveness of the seal.

[0076] In one implementation, along the depth direction of the receiving groove 112 , the radial dimension of the receiving groove 112 gradually decreases.

[0077] The receiving groove 112 may be a wedge-shaped groove, a spherical groove, etc. The side wall and the bottom wall of the receiving groove 112 may be smoothly connected, so that the inner wall of the receiving groove 112 is an arc surface.

[0078] The radial dimension of the receiving groove 112 gradually decreases along the depth direction of the receiving groove 112 , which can prevent the sealing plug 121 from withdrawing after the sealing plug 121 extends into the receiving groove 112 , thereby enhancing the sealing performance of the sealing assembly 12 and preventing dirt from accumulating.

[0079] For reference Figure 1 In one embodiment, the cleaning member 13 includes a vent pipe 132 and a valve. The vent pipe 132 is connected to the sewage collecting pipe 11. The vent pipe 132 has an air channel 131. The valve is suitable for controlling the connection between the air channel 131 and the flow channel 111 and the gas flow rate.

[0080] The device for delivering gas into the ventilation pipe 132 may be a front cabin gas source, specifically an air conditioning compressor, an air spring suspension air pump, etc., without limitation.

[0081] The ventilation pipe 132 and the sewage collecting pipe 11 can be an integrated structure, that is, an integrated structure prepared by an integrated process, and the integrated process can be injection molding, stamping, etc. The ventilation pipe 132 and the sewage collecting pipe 11 can also be an integrated structure, that is, the ventilation pipe 132 and the sewage collecting pipe 11 can be connected by welding, screwing, bonding, etc.

[0082] The type of valve may be a stop valve, a ball valve, a butterfly valve, a diaphragm valve, etc., without limitation.

[0083] The cleaning member 13 further includes a second detector for detecting the pressure of the airway 131 and transmitting it to the terminal, which compares the pressure P of the airway 131 with the first preset pressure Pmax and issues a subsequent work instruction. The second detector may be an air pressure sensor or the like.

[0084] The diameter of the vent pipe 132 is smaller than that of the sewage collecting pipe 11, so that the small-diameter and high-flow air blowing cleaning can ensure that the sealing component 12 and the sewage collecting pipe 11 will not be stuck by sand, stones, grass, etc., so that the seal fails.

[0085] The purpose of the gas delivered by the front cabin gas source to the ventilation pipe 132 is: during short-term ventilation, the pressure P of the airway 131 is detected to determine whether there are pollutants blocking the sewage collecting pipe 11; during long-term ventilation, air is blown into the sewage collecting pipe 11 to clean the sewage collecting pipe 11.

[0086] In one embodiment, the sewage collecting pipe 11 has a first end 115, and the ventilation pipe 132 is arranged between the first end 115 and the receiving groove 112. There is an angle between the ventilation pipe 132 and the sewage collecting pipe 11. The ventilation pipe 132 extends in a direction away from the receiving groove 112. The ventilation pipe 132 is suitable for blowing air toward the inner wall of the receiving groove 112 through the air channel 131.

[0087] The first end 115 of the sewage collecting pipe 11 is used to be connected to the second shell 30 .

[0088] The angle between the vent pipe 132 and the sewage collecting pipe 11 enables the gas to face the position of the annular convex rib 1122 during blowing, which is beneficial to enhancing the cleaning effect of the sewage collecting pipe 11.

[0089] During use, the vent pipe 132 extends in a direction away from the receiving groove 112 , that is, the extension direction of the vent pipe 132 is a direction away from the ground, which can prevent dust and other impurities from entering and clogging the vent pipe 132 .

[0090] The present invention provides a vehicle, comprising an air filter 100 according to any one of the aforementioned embodiments, wherein the air filter 100 is suitable for transmitting gas to an engine.

[0091] The vehicle further includes a first detector, which is used to detect the wading depth of the vehicle. The first detector may be a liquid level sensor or the like.

[0092] The vehicle includes a terminal, which is used to analyze the wading depth H measured by the first detector, the pressure P of the airway 131 measured by the second detector, and the pressure Z of the first chamber 50 measured by the third detection component, and to control the working state of the cleaning component 13, the sealing component 12, etc. to the relevant control components, and to issue an alarm to the driver, etc. The terminal can be a driving recorder, a vehicle-mounted computer, etc., without limitation.

[0093] For reference Figure 5 The present invention provides a vehicle control method, comprising:

[0094] Step S10 , controlling the sealing assembly 12 to operate according to the wading depth of the vehicle, and detecting the pressure P of the air passage 131 when the wading depth H of the vehicle is less than a preset depth Hmax.

[0095] Step S20 , when the pressure P of the air channel 131 is greater than or equal to the first preset pressure Pmax, the sealing assembly 12 withdraws from the receiving groove 112 , and the flow channel 111 is connected.

[0096] In step S30 , the cleaning member 13 blows air into the flow channel 111 to clean the sewage collecting pipe 11 .

[0097] Specifically, the specific operation of detecting the pressure of the airway 131 is to open the valve, briefly ventilate the airway 131 and the flow channel 111 for 1 second, and detect the pressure P of the airway 131. The first preset pressure Pmax is the average pressure value of the airway 131 of the ventilation tube 132 within 1 second of initial ventilation.

[0098] In step S30, the time for the cleaning member 13 to blow air into the flow channel 111 may be 20s, 25s, 30s, 35s, etc.

[0099] In step S10, after the vehicle is started normally for a certain period of time, the first detector starts to detect the wading depth of the vehicle. The certain period of time can be 1 minute, 2 minutes, 5 minutes, etc., without limitation.

[0100] The vehicle control method further includes: after the cleaning member 13 completes a single cleaning operation of the sewage collecting pipe 11, detecting the pressure P of the air passage 131. If the pressure P of the cleaned air passage 131 is less than the first preset pressure Pmax, it means that the cleaning operation of the sewage collecting pipe 11 is completed and the sealing assembly 12 extends into the sewage collecting pipe 11.

[0101] In one embodiment, controlling the operation of the sealing assembly 12 according to the wading depth H of the vehicle also includes: when the wading depth H of the vehicle is greater than or equal to a preset depth Hmax, the sealing assembly 12 extends into the receiving groove 112, disconnects the flow channel 111, and realizes the sealing operation of the air filter 100.

[0102] Whether the vehicle's air filter 100 needs to be sealed is judged according to the wading depth, thereby achieving the sealing reliability of the vehicle under wading conditions. At the same time, when the wading depth does not affect the vehicle, by judging the pressure P of the air duct 131, the cleaning component 13 can be controlled to clean the vehicle's air filter 100, which is beneficial to improving the vehicle's reliability in desert conditions or dusty conditions, and can also extend the service life of the filter element 40 of the air filter 100 and the engine.

[0103] In one embodiment, step S10 detects the pressure of the airway 131 and also includes: when the pressure of the airway 131 is less than or equal to a first preset pressure, the sealing assembly 12 extends into the receiving groove 112 and the flow channel 111 is disconnected; after each preset time interval, the pressure P of the airway 131 is detected.

[0104] The preset time length can be 10s, 20s, 30s, etc., without limitation. The pressure P of the airway 131 is continuously detected until the pressure P of the airway 131 is greater than or equal to the first preset pressure Pmax, indicating that the pollutants cause a certain degree of blockage to the sewage collecting pipe 11. At this time, steps S20 and S30 are performed to clean the sewage collecting pipe 11 until the pressure P of the airway 131 is less than the first preset pressure Pmax.

[0105] By continuously detecting the pressure P of the airway 131, the blockage of the sewage collecting valve can be discovered in time and cleaned, which can reduce the cleaning and replacement of the filter element 40 and is beneficial to the driving experience.

[0106] In one embodiment, step S30 also includes: when the pressure P of the air duct 131 is greater than or equal to the first preset pressure Pmax, the time interval between the first start of blowing of the cleaning part 13 and the last end of blowing is less than or equal to the first preset time, and the number of times the cleaning part 13 blows air into the sewage collecting pipe 11 is greater than or equal to the first preset number of times, the vehicle issues a first alarm; checks the filter element 40 according to the first alarm, and cleans the sewage collecting pipe 11 and the second shell 30.

[0107] The first preset time can be 4 minutes, 5 minutes, 6 minutes, etc., and the first preset number of times can be 3 times, 4 times, 5 times, etc., without limitation. Specifically, if the cleaning number of the inner cleaning member 13 continues to be 3 times or more within 5 minutes, the vehicle issues a first alarm.

[0108] The vehicle issues the first alarm, indicating that the pollutants in the sewage collecting pipe 11 are agglomerated, and the cleaning member 13 cannot blow air to discharge the pollutants. At this time, the pollutants are discharged manually. At the same time, the filter element 40 is checked to see whether it needs to be cleaned or replaced, and the interior of the second housing 30 is cleaned.

[0109] In one embodiment, checking the filter element 40 according to the first alarm, cleaning the sewage collecting pipe 11 and the second housing 30 also includes: detecting the pressure P of the air duct 131; when the pressure P of the air duct 131 is less than the first preset pressure Pmax, continuously detecting the pressure Z of the first chamber 50; when the number of times the pressure Z of the first chamber 50 is greater than or equal to the second preset pressure Zmax within a second preset time is greater than or equal to the second preset number of times, the vehicle issues a second alarm; and cleaning the second housing 30 and the filter element 40 according to the second alarm.

[0110] The second preset time can be 4 minutes, 5 minutes, 6 minutes, etc., and the second preset number can be 3 times, 4 times, 5 times, etc., without limitation. Specifically, if the pressure Z of the first chamber 50 detected within 5 minutes is greater than or equal to the second preset pressure Zmax for more than 3 times, the vehicle issues a second alarm.

[0111] The vehicle issues the second alarm indicating that the filter element 40 of the air filter 100 is full of dust and needs to be replaced.

[0112] The detection and cleaning of the drain valve 10 and the filter element 40 are achieved by double determination of the pressure P of the air passage 131 and the pressure Z of the first chamber 50 .

[0113] Checking the filter element 40 according to the first alarm, cleaning the sewage collecting pipe 11 and the second shell 30 also includes: when the number of times that the pressure Z of the first chamber 50 is less than the second preset pressure Zmax within the second preset time is greater than the second preset number of times, the sealing assembly 12 extends into the sewage collecting pipe 11 and the flow channel 111 is disconnected; after each preset time interval, the pressure P of the airway 131 is detected.

[0114] Specifically, if the pressure Z of the first chamber 50 detected within 5 minutes is greater than or equal to the second preset pressure Zmax for less than 3 times, it means that the cleaning is completed and the filter element 40 can continue to perform the air filtering and cleaning operation.

[0115] A specific control flow chart of a car can be referred to Figure 6After the vehicle is started normally, the first detector detects the wading depth H of the vehicle. If the wading depth H of the vehicle is less than the preset depth Hmax, the pressure P of the air passage 131 is detected. Otherwise, the sealing component 12 extends into the receiving groove 112. When P≥Pmax, the sealing component 12 withdraws from the receiving groove 112, and the cleaning component 13 blows air into the sewage collecting pipe 11 to achieve self-cleaning of the sewage valve 10. After each self-cleaning action is completed, the pressure P of the air passage 131 is detected again. If the pressure P of the cleaned air passage 131 is less than the first preset pressure Pmax, it means that the cleaning operation of the sewage collecting pipe 11 is completed, and the sealing component 12 extends into the sewage collecting pipe 11. The time interval T1 between the first start of blowing and the last end of blowing of the cleaning component 13 and the number of times n1 that the cleaning component 13 blows air into the sewage collecting pipe 11 are recorded. When T1 is less than or equal to the first preset time and n1 is greater than or equal to the first preset number of times, the vehicle issues a first alarm, and checks the filter element 40 according to the first alarm, and cleans the sewage collecting pipe 11 and the second housing 30. If the first alarm is not issued, it means that the sewage collecting pipe 11 has been cleaned, and the pressure P of the airway 131 is continuously detected. After cleaning the sewage collecting pipe 11 and the second housing 30, the pressure Z of the first chamber 50 is detected. If Z≥Zmax, the total time T2 for measuring the pressure Z of the first chamber 50 and the number of times n2 that the pressure Z of the first chamber 50 is greater than or equal to Zmax are recorded. When T2 is less than or equal to the second preset time and n2 is greater than or equal to the second preset number of times, that is, the number of times n2 that the pressure Z of the first chamber 50 is greater than or equal to the second preset pressure Zmax within the second preset time is greater than or equal to the second preset number of times, the vehicle issues a second alarm, and checks and cleans the second housing 30 and the filter element 40 according to the second alarm. If the second alarm is not issued, it means that the filter element 40 can still be used, and the pressure P of the airway 131 is continuously detected.

[0116] The air filter 100 of the present invention has a detection function for pollutants such as sand that accumulate naturally and continuously inside, and the cleaning element 13 can perform self-cleaning after the pollutants accumulate to a certain extent, and the sealing component 12 can perform a sealing operation in wading conditions, so that the air filter 100 has good waterproof performance, which can effectively solve the sand and dust cleaning problem of the vehicle in off-road conditions and the wading sealing problem in wading conditions, thereby increasing the service life of the air filter 100 and the engine.

[0117] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0118] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A drain valve for an air filter of a vehicle, characterized in that: include: A sewage collecting pipe having a flow channel, wherein the sewage collecting pipe is provided with a receiving groove in a radial direction, and the receiving groove is communicated with the flow channel; A sealing assembly connected to the outer periphery of the sewage collecting pipe, adapted to extend into the receiving groove and closely adhere to the inner wall of the receiving groove to disconnect the flow channel, and adapted to withdraw from the receiving groove to connect the flow channel; A cleaning member is connected to the sewage collecting pipe, wherein the cleaning member has an air passage, the air passage is communicated with the flow passage, and the cleaning member is suitable for blowing air to the flow passage through the air passage to clean the sewage collecting pipe.

2. The drain valve according to claim 1, characterized in that: The sealing assembly includes a sealing plug and a sealing shell, the sealing shell is connected to the sewage collecting pipe, the sealing plug is connected to one end of the sealing shell, and the sealing plug is suitable for telescopic movement relative to the sealing shell along the radial direction of the sewage collecting pipe to extend into or out of the receiving groove.

3. The drain valve according to claim 2, characterized in that: The sewage collecting pipe comprises a pipe body and a mounting portion, the flow channel and the receiving groove are both arranged on the pipe body, the mounting portion is arranged on the outer peripheral surface of the pipe body and is located around the receiving groove, and the sealing shell is connected to the mounting portion.

4. The drain valve according to claim 1, characterized in that: The flow channel penetrates through the inner wall of the receiving groove to form a flow channel opening. The inner wall of the receiving groove is provided with an annular convex rib, and the annular convex rib surrounds the flow channel opening.

5. The drain valve according to claim 4, characterized in that: Along the depth direction of the receiving groove, the radial dimension of the receiving groove gradually decreases.

6. The drain valve according to claim 1, characterized in that: The cleaning member comprises a vent pipe and a valve, wherein the vent pipe is connected to the sewage collecting pipe, the vent pipe has the air channel, and the valve is suitable for controlling the communication between the air channel and the flow channel and the gas flow rate.

7. The drain valve according to claim 6, characterized in that: The sewage collecting pipe has a first end, the ventilation pipe is arranged between the first end and the receiving groove, there is an angle between the ventilation pipe and the sewage collecting pipe, the ventilation pipe extends in a direction away from the receiving groove, and the ventilation pipe is suitable for blowing air toward the inner wall of the receiving groove through the air channel.

8. An air filter, characterized in that: It comprises a first shell, a second shell, a filter element and a sewage valve as described in any one of claims 1 to 7, wherein the first shell and the second shell are connected, the filter element is arranged between the first shell and the second shell, the filter element and the first shell enclose a first cavity, and the sewage collecting pipe is connected to the second shell.

9. A vehicle, characterized in that: The air filter of claim 8 is included, the air filter being adapted to deliver gas to an engine.

10. A vehicle control method, characterized in that: The vehicle is the vehicle according to claim 9, comprising: Controlling the operation of the sealing assembly according to the wading depth of the vehicle, and detecting the pressure of the air passage when the wading depth of the vehicle is less than a preset depth; When the pressure of the air channel is greater than or equal to a first preset pressure, the sealing component withdraws from the receiving groove, and the flow channel is connected; The cleaning member blows air toward the flow channel to clean the sewage collecting pipe.

11. The vehicle control method according to claim 10, characterized in that: Detecting the pressure of the airway includes: When the pressure of the air channel is less than the first preset pressure, the sealing assembly extends into the receiving groove and the flow channel is disconnected; After each preset time interval, the pressure of the airway is detected.

12. The vehicle control method according to claim 10, characterized in that: The cleaning member blows air toward the flow channel to clean the sewage collecting pipe, including: When the pressure of the air passage is greater than or equal to the first preset pressure, the time interval between the first start of blowing of the cleaning element and the last end of blowing of the cleaning element is less than or equal to the first preset time, and the number of times the cleaning element blows air into the sewage collecting pipe is greater than or equal to the first preset number, the vehicle issues a first alarm; According to the first alarm, the filter element is checked, and the sewage collecting pipe and the second shell are cleaned.

13. The vehicle control method according to claim 12, characterized in that: Cleaning the sewage collecting pipe and the second shell also includes: detecting the pressure of the airway; When the pressure of the airway is less than the first preset pressure, continuously detecting the pressure of the first cavity; When the number of times that the pressure of the first chamber is detected to be greater than or equal to the second preset pressure within the second preset time is greater than or equal to the second preset number of times, the vehicle issues a second alarm; The second housing and the filter element are cleaned according to the second alarm.

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