CN215109232U

CN215109232U - Air cleaner self-cleaning system

Info

Publication number: CN215109232U
Application number: CN202120392182.7U
Authority: CN
Inventors: 李峰
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2021-02-22
Filing date: 2021-02-22
Publication date: 2021-12-10
Anticipated expiration: 2031-02-22

Abstract

The utility model provides an air cleaner automatically cleaning system, this system include air cleaner. The downstream exhaust path of the air filter is communicated with a back-blowing channel with controllable on-off, and under the on-state of the back-blowing channel, the gas flowing into the back-blowing channel from the exhaust path is introduced into the downstream side of the filter element in the air filter after oil-gas separation so as to back-blow the filter element. The utility model discloses an air cleaner automatically cleaning system is favorable to reducing air cleaner's the maintenance frequency of disassembling.

Description

Air cleaner self-cleaning system

Technical Field

The utility model relates to an air filtration technical field of vehicle, in particular to air cleaner automatically cleaning system.

Background

The air filter is mainly used for removing particles and impurities in the air and providing clean air for the engine; the filtering efficiency of the air filter and the dust holding capacity of the air filter are main factors for limiting the maintenance mileage of the whole vehicle. After the air filter is used for a long time, more and more impurities can be accumulated on the filter element, so that the filtering effect is more and more poor, the air inlet resistance is increased, and the automobile oil consumption can be increased or the problem of engine oil burning can be caused. Therefore, the air filter requires periodic cleaning or replacement of the filter element to ensure good operation of the engine.

The filter element of the air filter can be cleaned regularly, so that the air inlet effect of an engine can be improved, the service life of the filter element can be prolonged, and the untimely cleaning is easily caused by large workload of disassembling the air filter element; the maintenance cost of the automobile user is not reduced; it does not greatly contribute to increasing the maintenance mileage of the vehicle. In addition, in a limited space, the effective filtering area of the air filter is increased through the folding of filter paper or the research of filter materials, so that the service life of the filter element of the air filter is prolonged, and the help of prolonging the service life of the filter element of the air filter and reducing the maintenance frequency is very limited.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to an air cleaner self-cleaning system, which is beneficial to reducing the frequency of disassembling and maintaining the air cleaner.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a self-cleaning system of an air filter comprises the air filter, a back-blowing channel with controllable on-off is communicated on a downstream exhaust path of the air filter, and gas flowing into the back-blowing channel from the exhaust path is introduced into the downstream side of a filter element in the air filter after oil-gas separation in a state that the back-blowing channel is conducted so as to back-blow the filter element.

Furthermore, a detection device for detecting the blocking degree of the filter element is connected to the air filter to generate a detection signal; and the control unit connected with the detection device receives the detection signal to control the on-off of the back flushing channel.

Further, the detection means is configured as a differential pressure sensor that detects a differential pressure between an upstream side and the downstream side of the filter element.

Further, the blowback channel comprises an oil-gas separator, a gas leakage pipe communicated between a gas inlet of the oil-gas separator and the exhaust path, and a blowback pipeline communicated between a gas outlet of the oil-gas separator and the downstream side.

Furthermore, an air leakage branch pipe with controllable on-off is communicated between the air outlet of the oil-gas separator and the air outlet path.

Furthermore, the air leakage branch pipe is led out from an air outlet of the oil-gas separator and communicated to an air outlet end of the air filter.

Furthermore, the air release pipe, the air release branch pipe and the back flushing pipeline are all provided with control valves for controlling the on-off of the pipelines.

Furthermore, the exhaust path at the downstream of the air filter comprises an air filtering air pipe connected to the air outlet end of the air filter, a supercharging device and an engine air inlet pipe which are sequentially communicated with the downstream of the air filtering air pipe, and the blowback channel is led out from the engine air inlet pipe.

Further, the supercharging device is a turbocharger.

Further, an intercooler is arranged between the turbocharger and the engine air inlet pipe.

Compared with the prior art, the utility model discloses following advantage has:

air cleaner automatically cleaning system, through add in air cleaner system and establish the blowback passageway, draw gas from air cleaner low reaches exhaust route, after oil-gas separation, be used for the blowback to air cleaner's filter core, blow down with the particle impurity on the filter core, and blow off from air cleaner's empty intake pipe of straining, can improve the life of filter core, do benefit to the maintenance frequency of disassembling that reduces air cleaner, thereby practice thrift the maintenance cost of vehicle.

In addition, the detection device is arranged on the air filter, and a signal is automatically sent according to the blocking condition of the filter element to control the on-off of the back flushing channel, so that automatic back flushing cleaning of the filter element can be realized, and the running performance of the self-cleaning system of the air filter can be improved. The pressure difference between the upstream side and the downstream side of the filter element is detected by adopting the pressure difference sensor, so that the blocking condition of the filter element is judged, and the filter element has the advantages of mature and reliable technology, convenience in technical realization and the like.

In addition, an air filter air pipe, a supercharging device, an intercooler, an engine air inlet pipe and the like are sequentially arranged on an exhaust path of the air filter, so that supercharging and air supply of the engine can be realized, high pressure is favorably formed at the engine air inlet pipe, and the air filter is used for leading out an air leakage pipe and draining or back flushing of a back flushing pipeline. The arrangement of the intercooler can cool and dehumidify the gas exhausted by the supercharging device so as to provide good airflow beneficial to combustion for the engine.

Drawings

The accompanying drawings, which form a part of the present disclosure, are provided to provide a further understanding of the present disclosure, and the exemplary embodiments and descriptions thereof are provided to explain the present disclosure, wherein the related terms in the front, back, up, down, and the like are only used to represent relative positional relationships, and do not constitute an undue limitation of the present disclosure. In the drawings:

FIG. 1 is a schematic diagram illustrating an overall configuration of an air cleaner self-cleaning system according to an embodiment of the present invention;

FIG. 2 is a schematic diagram illustrating the control relationship between the components of the self-cleaning system of the air cleaner according to the embodiment of the present invention;

description of reference numerals:

1. an air cleaner; 10. a filter element; 100. an air filtering air inlet pipe; 101. an upstream side; 102. a downstream side; 103. air filtering out the air pipe; 2. a pressure boosting device; 20. a supercharging device air outlet pipe; 3. an engine; 30. an engine intake duct; 300. an air escape pipe; 301. a throttle valve; 302. an intake manifold; 4. an intercooler;

5. an oil-gas separator; 500. a gas release branch pipe; 501. a back flushing pipeline; 6. a differential pressure sensor; 60. a pressure sensor; 601. an upstream side pressure guide pipe; 602. a downstream side pressure guiding pipe; 7. a pressure relief valve; 70. a first control valve; 71. a second control valve; 8. a control unit.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the appearances of the terms first, second, etc. in the figures are also for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless expressly limited otherwise. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The embodiment relates to an air cleaner self-cleaning system, which is beneficial to reducing the disassembly and maintenance frequency of the air cleaner.

The air cleaner self-cleaning system includes an air cleaner. The downstream exhaust path of the air filter is communicated with a back-blowing channel with controllable on-off, and under the on-state of the back-blowing channel, gas flowing into the back-blowing channel from the exhaust path is introduced into the downstream side of the filter element in the air filter after oil-gas separation so as to back-blow the filter element, thereby realizing the self-cleaning of the air filter element.

Based on the above design concept, an exemplary structure of the self-cleaning system of the air cleaner of the present embodiment is shown in fig. 1.

It should be noted that the back blowing in the present embodiment refers to a process in which the air flow in the air cleaner 1 flows in a reverse direction to blow off the dust particles and impurities attached to the upstream side 101 of the filter element 10 in the air cleaner 1, and blow out from the air filter inlet pipe 100. Under normal conditions, air is taken in from an air filter inlet pipe 100 of the air filter 1, filtered by the filter element 10 and then discharged from an air outlet end of the air filter 1 for use by the engine 3. The self-cleaning in this embodiment has two layers, namely, the air flow for back flushing is the air flow filtered by the air filter 1, and the dust accumulation blockage condition of the filter element 10 can be detected through the setting of the detection device, so as to automatically control the on-off of the back flushing channel, thereby realizing automatic back flushing cleaning.

As shown in fig. 1 and fig. 2, a Control Unit 8 is disposed in the system, and preferably, the Control Unit 8 is implemented by an ECU (Electronic Control Unit) of the vehicle. Of course, a detection device with a switching value output electric shock can be adopted, and the on-off of the back flushing channel can be controlled according to the action of a threshold contact set in the detection device.

The above-described detection device is provided on the air cleaner 1, and is configured to detect the degree of dust clogging of the filter element 10, and generate a detection signal. And a control unit 8 connected with the detection device receives the detection signal to control the on-off of the back flushing channel. By arranging the detection device on the air filter 1, a signal is automatically sent according to the blocking condition of the filter element 10, the on-off of the back flushing channel is controlled, the automatic back flushing cleaning of the filter element 10 can be formed, and the running performance of the self-cleaning system of the air filter can be improved. Preferably, the detection device adopts a differential pressure sensor 6, and an upstream side pressure guide pipe 601 and a downstream side pressure guide pipe 602 of the differential pressure sensor 6 are respectively communicated with the upstream side 101 and the downstream side 102 of the filter element 10 to detect the pressure difference before and after the filter element 10, so that the blockage condition of the filter element 10 can be judged. The adoption of the differential pressure sensor 6 for detecting the differential pressure between the upstream side 101 and the downstream side 102 of the filter element 10 to judge the blocking condition of the filter element 10 has the advantages of mature and reliable technology, convenient technology realization and the like.

As for the specific arrangement of the blowback passage, as shown in fig. 1, in the present embodiment, the blowback passage includes the gas-oil separator 5, the blowback pipe 300 communicating between the gas inlet of the gas-oil separator 5 and the gas exhaust path, and the blowback pipe 501 communicating between the gas outlet of the gas-oil separator 5 and the downstream side 102. The air is supplied by the air leakage pipe 300 on the exhaust path of the existing air filter 1, the oil stain in the back flushing airflow is separated by the oil-gas separator 5, and the separated airflow is guided to the downstream side 102 in the air filter 1 through the back flushing pipeline 501, so that the filter element 10 is reversely flushed. When the engine 3 is in an oil receiving stage, the throttle valve 301 of the engine 3 is closed for a short time, so that high pressure is formed at the engine air inlet pipe 30 of an exhaust path, the air release pipe 300 is communicated with the engine air inlet pipe 30, exhaust pressure airflow for back flushing is formed in the air release pipe 300, and the airflow processed by the oil-gas separator 5 is used for back flushing of the filter element 10, so that the exhaust pressure airflow is fully utilized.

Since the air flow of the blow-back channel is led out of the exhaust path of the air cleaner 1, a higher pressure of air is required in the blow-back channel than at the downstream side 102. During the specific configuration of the system, the system can be realized by arranging a booster fan on the back blowing channel and the like. Of course, based on the configuration of the air filter system of the existing vehicle, in this embodiment, the exhaust path downstream of the air filter 1 includes an air filter air pipe 103 connected to the air outlet end of the air filter 1, and a supercharging device 2, a supercharging device air outlet pipe 20, an intercooler 4 and an engine air inlet pipe 30 which are sequentially communicated with the downstream of the air filter air pipe 103, and the blowback channel is led out from the engine air inlet pipe 30 and finally enters the downstream side 102 of the filter element 10 in the air filter 1. The air filtering air pipe 103, the supercharging device 2, the intercooler 4, the engine air inlet pipe 30 and the like are sequentially arranged on the exhaust path, so that supercharging and air supply of the engine 3 can be realized, and high pressure is favorably formed at the engine air inlet pipe 30. The intercooler 4 is arranged to cool and dehumidify the gas discharged from the supercharging device 2, so as to provide good airflow for the engine 3, which is beneficial to combustion. Preferably, the supercharging device 2 is a turbocharger.

The specific blowback control process is that, when engine 3 received oil, throttle valve 301 closed for a short time, at this moment, can form the negative pressure in intake manifold 302, through installing pressure sensor 60 additional in intake manifold 302 department to detect this negative pressure condition, can in time judge the closing condition of throttle valve 301, and then control release pipe 300 switches on the row of pressure. When the air release pipe 300 is in a conducting and pressure-discharging state, the blowback pipeline 501 is conducted at the same time, so that the complete conduction of the blowback channel can be realized, and the blowback of the filter element 10 can be realized. If the situation detected by the differential pressure sensor 6 determines that the filter element 10 does not need to be cleaned by back blowing, the back blowing pipeline 501 can be cut off, and the air flow in the air release pipe 300 can be discharged through the pressure discharge pipeline or the air release branch pipe 500 which is arranged for the air release pipe.

In the present embodiment, an on-off controllable air release branch pipe 500 is communicated between the air outlet of the oil-gas separator 5 and the air outlet path, and preferably, the air release branch pipe 500 is led out from the air outlet of the oil-gas separator 5 and communicated to the air outlet end of the air filter 1, for example, can be connected to the air filter air pipe 103. The arrangement of the air-release branch pipe 500 can be used for releasing pressure and exhausting air of the air-release pipe 300 when the blowback pipeline 501 is cut off, and the air discharged by the air-release branch pipe 500 is led into an exhaust path to be used by the engine 3 continuously, so that the waste of the air filtered by the filter element 10 can be reduced; the air leakage branch pipe 500 is led to the air outlet end of the air filter 1, so that the air flow is pressurized by the pressurizing device 2 again and then supplied to the engine 3 for use, and the air supply process of the whole air filter air supply system can be smoother.

Based on the above configuration, in order to control the on/off of the air-release pipe 300, the air-release branch pipe 500, and the blowback pipeline 501, the air-release pipe 300, the air-release branch pipe 500, and the blowback pipeline 501 are all provided with control valves for controlling the on/off of the air-release pipe 300, the air-release branch pipe 500, and the blowback pipeline 501. Preferably, the control valves are electromagnetic valves, and specifically include a pressure relief valve 7 on the air release pipe 300, a first control valve 70 on the air release branch pipe 500, and a second control valve 71 on the blowback pipeline 501. The three control valves are all connected to the control unit 8, meanwhile, the differential pressure sensor 6 and the pressure sensor 60 are also connected to the control unit 8, and the control unit 8 controls the actions of the three control valves according to the detection signal conditions of the differential pressure sensor 6 and the pressure sensor 60 so as to control the on-off of the air release pipe 300, the air release branch pipe 500 and the blowback pipeline 501. The arrangement can not only conveniently control the pressure relief and exhaust of the air release pipe 300, the blowback airflow in the blowback pipeline 501 and the recycling of the pressure relief airflow in the air release branch pipe 500, but also facilitate the technical realization of air path switching control.

This embodiment air cleaner automatically cleaning system, establish the blowback passageway through adding in air cleaner 1 system, draw gas from air cleaner 1 low reaches exhaust route, after oil-gas separation, be used for the blowback to air cleaner 1's filter core 10, blow off with the particulate impurity on the filter core 10, and blow off from air cleaner 1's air filter intake pipe 100, can improve filter core 10's life, do benefit to reducing air cleaner 1's maintenance and disassemble frequently, thereby practice thrift the maintenance cost of vehicle.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An air cleaner self-cleaning system comprising an air cleaner (1), characterized in that: the exhaust path at the downstream of the air filter (1) is communicated with a back flushing channel with controllable on-off, and under the conducting state of the back flushing channel, gas flowing into the back flushing channel from the exhaust path is introduced into the downstream side (102) of the filter element (10) in the air filter (1) after oil-gas separation so as to back flush the filter element (10).

2. The air cleaner self-cleaning system of claim 1, wherein: a detection device for detecting the blocking degree of the filter element (10) is connected to the air filter (1) to generate a detection signal; and a control unit (8) connected with the detection device receives the detection signal to control the on-off of the back flushing channel.

3. The air cleaner self-cleaning system of claim 2, wherein: the detection device is configured as a differential pressure sensor (6) that detects a differential pressure between an upstream side (101) and the downstream side (102) of the filter element (10).

4. The air cleaner self-cleaning system of claim 1, wherein: the back flushing channel comprises an oil-gas separator (5), a gas leakage pipe (300) communicated between a gas inlet of the oil-gas separator (5) and the exhaust path, and a back flushing pipeline (501) communicated between a gas outlet of the oil-gas separator (5) and the downstream side (102).

5. The air cleaner self-cleaning system of claim 4, wherein: and an air leakage branch pipe (500) with controllable on-off is communicated between the air outlet of the oil-gas separator (5) and the air outlet path.

6. The air cleaner self-cleaning system of claim 5, wherein: the air leakage branch pipe (500) is led out from an air outlet of the oil-gas separator (5) and communicated to an air outlet end of the air filter (1).

7. The air cleaner self-cleaning system of claim 5, wherein: and the air release pipe (300), the air release branch pipe (500) and the blowback pipeline (501) are all provided with control valves for controlling the on-off of the pipelines.

8. An air cleaner self-cleaning system according to any one of claims 1-7, wherein: the exhaust path at the downstream of the air filter (1) comprises an air filtering air pipe (103) connected to the air outlet end of the air filter (1), a supercharging device (2) and an engine air inlet pipe (30) which are sequentially communicated with the downstream of the air filtering air pipe (103), and the blowback channel is led out from the engine air inlet pipe (30).

9. The air cleaner self-cleaning system of claim 8, wherein: the supercharging device (2) is a turbocharger.

10. The air cleaner self-cleaning system of claim 9, wherein: an intercooler (4) is arranged between the turbocharger and the engine air inlet pipe (30).