Self-cleaning electrical control system for air filter element of vehicle engine

Abstract

The utility model relates to the technical field of automatic dust removal of air filters for vehicles, and particularly discloses a self-cleaning electrical control system of an air filter element of a vehicle engine. Comprising a main controller, a two-position three-way electromagnetic valve, an intermediate relay, a wiring terminal strip, an alternating current air compressor, an inverter, a power switch, a power fuse, a power indicating lamp, a working indicating lamp, a starting switch, a differential pressure switch, a first electromagnetic pulse valve and a second electromagnetic pulse valve. The inverter, the alternating-current air compressor, the two-position three-way electromagnetic valve, the intermediate relay and the electromagnetic pulse valve are used for providing a proper amount of compressed air source at proper time, the compressed air source is integrated, a vehicle without the source of 0.6-0.8 MPa can also conduct self-cleaning on the air filter element of the engine, and therefore the application range of the self-cleaning device for the air filter element of the vehicle engine is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic dust cleaning of vehicle air filters, in particular to a self-cleaning electrical control system for a vehicle engine air filter element. Background Art

[0002] At present, large vehicles are generally powered by diesel engines, including new energy vehicles. The engine needs to be equipped with an air filter. The service life of any air filter is limited by the inherent "dust holding capacity" of the air filter. In mines, desert hinterlands or desert edges, the air quality is very poor, and sometimes the dust content in the air is >20g / m 3 The air filters of mining machinery or military vehicles used in the industry have a short service life. Sometimes the filter elements have to be replaced several times a day, or the air filters have to be removed every few days or even hours, and the filter elements are purged from the inside out with compressed air to remove the accumulated dust in the air filters, so that the filter elements can be reused several times. Although manual purging of the filter elements can reduce the production cost of purchasing new filter elements, it greatly reduces the operating rate of the equipment; especially for tanks, if the tank stops driving due to the blockage of the air filter and the fighter plane is lost, the loss is immeasurable. Therefore, the engine air filter element self-cleaning device is used to clean the air filter element.

[0003] However, in the prior art, many large vehicles do not have a compressed air source, thus limiting the application of the vehicle engine air filter self-cleaning device. Utility Model Content

[0004] The utility model aims to provide a self-cleaning electrical control system for a vehicle engine air filter, aiming to solve the technical problem in the prior art that many large vehicles have no compressed air source, thus limiting the application of the vehicle engine air filter self-cleaning device.

[0005] To achieve the above object, a self-cleaning electrical control system for a vehicle engine air filter of the present utility model includes a main controller, a two-position three-way solenoid valve, an intermediate relay, a terminal block, an AC air compressor, an inverter, a power switch, a power fuse, a power indicator light, a working indicator light, a start switch, a differential pressure switch, a first electromagnetic pulse valve, and a second electromagnetic pulse valve. Terminal 1 of the terminal block is connected to the positive pole of the 24VDC power supply and the power switch, and is connected to the positive terminal of the main controller and the positive terminal of the inverter through the power fuse. Terminal 2 of the terminal block is grounded. Terminal 3 of the terminal block is connected to the positive terminal of the first electromagnetic pulse valve and terminal SOL1+ of the main controller. Terminal 4 of the terminal block is connected to the positive terminal of the second electromagnetic pulse valve and terminal SOL2+ of the main controller. Terminal 5 of the terminal block is connected to the positive terminal of the differential pressure switch, the start switch, and terminal RUD of the main controller. The GND of the main controller, the two-position three-way solenoid valve, the intermediate relay, the start switch, the power indicator light, the working indicator light, the first electromagnetic pulse valve, the second electromagnetic pulse valve, and the inverter are uniformly grounded through terminal 2 of the terminal block. Terminal 2 of the two-position three-way solenoid valve is connected to terminal 4 of the intermediate relay. Terminal 1 of the AC air compressor is connected to terminal 5 of the inverter. Terminal 2 of the AC air compressor is connected to terminal 6 of the inverter.

[0006] Among them, when the power switch is closed, the power indicator light is on, the main controller is powered on and in a standby state. The output of terminal KA+ of the main controller is 0V, the working indicator light is off, the two-position three-way solenoid valve and the intermediate relay are de-energized, and the outputs of terminal SOL1+ and terminal SOL2+ of the main controller are both 0V.

[0007] Among them, when the start switch is electrically started or the differential pressure switch is instantaneously closed, the main controller enters the working state. The output of terminal KA+ of the main controller is 24VDC, the working indicator light is on, terminal 1 of the intermediate relay is energized, terminals 3 and 5 of the intermediate relay are closed, terminals 5 and 6 of the intermediate relay are closed, terminal 2 of the two-position three-way solenoid valve is energized, the normally open air outlet of the two-position three-way solenoid valve is closed, terminals 2 and 3 of the inverter start are closed, the inverter outputs 220VAC power, and the AC air compressor works to output compressed air of 0.6 - 0.8MPa.

[0008] Among them, the main controller enters the working state. The SOL1+ terminal and SOL2+ terminal of the main controller alternately output 24V+ pulse signals with a specific pulse period T1 and pulse width T2, alternately opening or closing the first electromagnetic pulse valve and the second electromagnetic pulse valve, and using the compressed air output by the AC air compressor at 0.6 - 0.8 MPa to clean one or two air filters respectively. At the time preset by the main controller, after the arrival time, the output of the KA+ terminal of the main controller is 0VDC, the intermediate relay loses power, the inverter and the AC air compressor stop working successively, the two-position three-way solenoid valve loses power, and the compressed air in the compressed air pipeline is emptied to prepare for the next start of the AC air compressor. The self-cleaning process stops, and the main controller returns to the standby state again.

[0009] The beneficial effect of the self-cleaning electrical control system for the air filter of a vehicle engine of the present invention is as follows: By providing a timely and appropriate source of compressed air through the inverter, the AC air compressor, the two-position three-way solenoid valve, the intermediate relay, and the electromagnetic pulse valve, which are integrated into one, vehicles without a source of 0.6 - 0.8 MPa can also perform self-cleaning of the engine air filter, thereby expanding the application range of the self-cleaning device for the air filter of a vehicle engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0011] Figure 1 It is a schematic structural diagram of the self-cleaning electrical control system for the air filter of a vehicle engine of the present invention.

[0012] 1 - Main controller, 2 - Two-position three-way solenoid valve, 3 - Intermediate relay, 4 - Terminal block, 5 - AC air compressor, 6 - Inverter, 7 - Power switch, 8 - Power fuse, 9 - Power indicator light, 10 - Working indicator light, 11 - Start switch, 12 - Differential pressure switch, 13 - First electromagnetic pulse valve, 14 - Second electromagnetic pulse valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] Please refer to Figure 1, the present utility model provides a self-cleaning electrical control system for a vehicle engine air filter, which includes a main controller 1, a two-position three-way solenoid valve 2, an intermediate relay 3, a terminal block 4, an AC air compressor 5, an inverter 6, a power switch 7, a power fuse 8, a power indicator light 9, a working indicator light 10, a start switch 11, a differential pressure switch 12, a first electromagnetic pulse valve 13 and a second electromagnetic pulse valve 14. The terminal 1 of the terminal block 4 is connected to the positive pole of the 24VDC power supply and the power switch 7, and is connected to the positive terminal of the main controller 1 and the positive terminal of the inverter 6 through the power fuse 8. The terminal 2 of the terminal block 4 is grounded. The terminal 3 of the terminal block 4 is connected to the positive terminal of the first electromagnetic pulse valve 13 and the terminal SOL1+ of the main controller 1. The terminal 4 of the terminal block 4 is connected to the positive terminal of the second electromagnetic pulse valve 14 and the terminal SOL2+ of the main controller 1. The terminal 5 of the terminal block 4 is connected to the positive terminal of the differential pressure switch 12, the start switch 11 and the RUD terminal of the main controller 1. The GND of the main controller 1, the two-position three-way solenoid valve 2, the intermediate relay 3, the start switch 11, the power indicator light 9, the working indicator light 10, the first electromagnetic pulse valve 13, the second electromagnetic pulse valve 14 and the inverter 6 are uniformly grounded through the terminal 2 of the terminal block 4. The terminal 2 of the two-position three-way solenoid valve 2 is connected to the terminal 4 of the intermediate relay 3. The terminal 1 of the AC air compressor 5 is connected to the terminal 5 of the inverter 6. The terminal 2 of the AC air compressor 5 is connected to the terminal 6 of the inverter 6.

[0014] Further, when the power switch 7 is closed, the power indicator light 9 is on, the main controller 1 is powered on and in a standby state. The output of the terminal KA+ of the main controller 1 is 0V, the working indicator light 10 is off, the two-position three-way solenoid valve 2 and the intermediate relay 3 are de-energized, and the outputs of the terminal SOL1+ and terminal SOL2+ of the main controller 1 are both 0V.

[0015] Further, when the start switch 11 is electrically started or the differential pressure switch 12 is instantaneously closed, the main controller 1 enters the working state. The terminal KA+ of the main controller 1 outputs 24VDC, the working indicator light 10 is on, the terminal 1 of the intermediate relay 3 is energized, the terminals 3 and 5 of the intermediate relay 3 are closed, the terminals 5 and 6 of the intermediate relay 3 are closed, the terminal 2 of the two-position three-way solenoid valve 2 is energized, the normally open air outlet of the two-position three-way solenoid valve 2 is closed, the start terminals 2 and 3 of the inverter 6 are closed, the inverter 6 outputs 220VAC power, and the AC air compressor 5 works to output compressed air of 0.6 - 0.8MPa.

[0016] Further, the main controller 1 enters the working state, and the SOL1+ terminal and the SOL2+ terminal of the main controller 1 alternately output 24V+ pulse signals with a specific pulse period T1 and a pulse width T2, alternately opening or closing the first electromagnetic pulse valve 13 and the second electromagnetic pulse valve 14, and using the compressed air output by the AC air compressor 5 with a pressure of 0.6-0.8 MPa to clean one or both air filters respectively. At the time preset by the main controller 1, after the arrival time, the output of the KA+ terminal of the main controller 1 is 0VDC, the intermediate relay 3 loses power, the inverter 6 and the AC air compressor 5 stop working successively, the two-position three-way solenoid valve 2 loses power, and the compressed air in the compressed air pipeline is emptied to prepare for the next start of the AC air compressor 5. The self-cleaning process stops, and the main controller 1 returns to the standby state again.

[0017] In this embodiment, the inverter 6, the AC air compressor 5, the two-position three-way solenoid valve 2, the intermediate relay 3 and the electromagnetic pulse valve provide a timely and appropriate source of compressed air, which are integrated into one body, enabling vehicles without a 0.6-0.8 MPa source to also perform self-cleaning of the engine air filter, thereby expanding the application range of the self-cleaning device for the vehicle engine air filter.

[0018] The above-disclosed is only a preferred embodiment of the present invention, and of course, it cannot be used to limit the scope of rights of the present invention. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. An automatic cleaning electrical control system for a vehicle engine air filter, characterized in that it includes a main controller, a two-position three-way solenoid valve, an intermediate relay, a terminal block, an AC air compressor, an inverter, a power switch, a power fuse, a power indicator light, a working indicator light, a start switch, a differential pressure switch, a first electromagnetic pulse valve and a second electromagnetic pulse valve. Terminal 1 of the terminal block is connected to the positive pole of the 24VDC power supply and the power switch, and is connected to the positive terminal of the main controller and the positive terminal of the inverter through the power fuse. Terminal 2 of the terminal block is grounded. Terminal 3 of the terminal block is connected to the positive terminal of the first electromagnetic pulse valve and terminal SOL1+ of the main controller. Terminal 4 of the terminal block is connected to the positive terminal of the second electromagnetic pulse valve and terminal SOL2+ of the main controller. Terminal 5 of the terminal block is connected to the positive terminal of the differential pressure switch, the start switch and terminal RUD of the main controller. The GND of the main controller, the two-position three-way solenoid valve, the intermediate relay, the start switch, the power indicator light, the working indicator light, the first electromagnetic pulse valve, the second electromagnetic pulse valve and the inverter are grounded uniformly through terminal 2 of the terminal block. Terminal 2 of the two-position three-way solenoid valve is connected to terminal 4 of the intermediate relay. Terminal 1 of the AC air compressor is connected to terminal 5 of the inverter. Terminal 2 of the AC air compressor is connected to terminal 6 of the inverter.

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