阅读说明：本技术 空滤器清洁方法、清洁装置、空滤器及工程车辆 (Air filter cleaning method, air filter cleaning device, air filter and engineering vehicle ) 是由 冯白芳 廖金涛 彭世庆 于松林 于 2021-08-31 设计创作，主要内容包括：本申请涉及工程车辆安全运行的技术领域,具体涉及空滤器清洁方法、清洁装置、空滤器及工程车辆。方法包括：获取车辆的运行状态,根据运行状态产生清洁信号；根据清洁信号控制清洁装置启动,以将空滤器内的滤芯上的灰尘震落；以及在产生清洁信号的第一预设时间后,控制抽尘装置开启,以将空滤器内的灰尘抽出。在车辆运行时,根据车辆的运行状态来确定空滤器的清洁时机,当需要对空滤器进行清洁时,产生相应的清洁信号,从而控制清洁装置启动,清洁装置将空滤器内的滤芯上的灰尘震落,再控制抽尘装置开启,以将空滤器内的灰尘抽出,以此减少灰尘在空滤器内滞留的可能性,降低灰尘再次附着在滤芯上的可能性,从而提高空滤器的清洁效果。(The application relates to the technical field of safe operation of engineering vehicles, in particular to an air filter cleaning method, a cleaning device, an air filter and an engineering vehicle. The method comprises the following steps: acquiring the running state of the vehicle, and generating a cleaning signal according to the running state; controlling a cleaning device to start according to the cleaning signal so as to shake off dust on a filter element in the air filter; and after the first preset time for generating the cleaning signal, controlling the dust extraction device to be started so as to extract the dust in the air filter. When a vehicle runs, the cleaning time of the air filter is determined according to the running state of the vehicle, when the air filter needs to be cleaned, a corresponding cleaning signal is generated, so that the cleaning device is controlled to be started, dust on the filter element in the air filter is shaken off by the cleaning device, and then the dust extraction device is controlled to be started to extract the dust in the air filter, so that the possibility that the dust stays in the air filter is reduced, the possibility that the dust is attached to the filter element again is reduced, and the cleaning effect of the air filter is improved.)

1. A method of cleaning an air filter, the method comprising:

acquiring the running state of a vehicle, and generating a cleaning signal according to the running state;

controlling a cleaning device to start according to the cleaning signal so as to clean dust on a filter element in the air filter; and

and after a first preset time for generating the cleaning signal, controlling a dust extraction device to be started so as to extract the dust in the air filter.

2. The air filter cleaning method according to claim 1, wherein the air filter comprises a housing and the filter element, a dust exhaust cavity is formed between the housing and the filter element, the housing comprises a first air suction port and a second air suction port, and the first air suction port and the second air suction port are both communicated with the dust exhaust cavity; wherein the first air inlet is located above the second air inlet in the direction of gravity;

after the first preset time for generating the cleaning signal, controlling the dust extraction device to be opened so as to extract the dust in the air filter, specifically comprising:

and controlling the first air suction opening or the second air suction opening to be opened so as to control the dust pumping device to pump the dust in the dust exhaust cavity out of the first air suction opening or the second air suction opening.

3. The air filter cleaning method according to claim 2, wherein the controlling the first suction port to be selectively opened or closed or the second suction port to be selectively opened or closed to control the dust pumping device to pump the dust in the dust exhaust chamber out of the first suction port or the second suction port specifically comprises:

controlling the dust extraction device to start;

closing the second suction port and opening the first suction port; and

and when the starting time of the dust extraction device exceeds a first preset time value, closing the first air suction port and opening the second air suction port.

4. The air filter cleaning method according to claim 3, wherein the controlling the first suction port to be selectively opened or closed or the second suction port to be selectively opened or closed to control the dust extracting device to extract the dust of the dust discharging chamber from the first suction port or the second suction port further comprises:

and when the starting time of the dust extraction device exceeds a second preset time value, closing the dust extraction device.

5. The air filter cleaning method according to claim 1, wherein the operation state of the vehicle is acquired, and the cleaning signal is generated according to the operation state:

accumulating working condition information according to the starting information of the vehicle;

stopping accumulation according to flameout information; and

and generating the cleaning signal according to the working condition information.

6. The air filter cleaning method according to claim 5, wherein the operating condition information comprises any one or a combination of information of: the method comprises the steps of increasing the operation time of the engineering vehicle, increasing the operation time of the engine, increasing the mileage and increasing the resistance value of the air filter.

7. The air filter cleaning method according to claim 5, wherein accumulating the operating condition information according to the starting information of the vehicle further comprises:

acquiring starting information of the vehicle; and

a cleaning command is manually input through a controller to generate the cleaning signal.

8. The air filter cleaning method according to claim 2, wherein the air filter further comprises:

the air blowing pipe is arranged on the shell, and one end of the air blowing pipe is communicated with the dust exhaust cavity; and

the other end of the air blowing pipe is communicated with the air blowing piece;

wherein, after the first preset time for generating the cleaning signal, controlling the dust extraction device to be opened so as to extract the dust in the air filter, specifically, the method further comprises:

and after the first preset time for generating the cleaning signal, controlling the air blowing piece to operate so as to blow dust exhaust gas into the dust exhaust cavity through the air blowing pipe.

9. An air filter cleaning method according to any one of claims 2 to 8, wherein the cleaning device comprises:

the gas storage cylinder is used for storing first pressure gas; wherein the pressure of the first pressure gas is greater than atmospheric pressure;

one end of the back flushing pipe is connected with the air cylinder, and the other end of the back flushing pipe is communicated with the shell and the filter element; and

the electromagnetic valve is arranged on the back flushing pipe and is configured to selectively open or close the back flushing pipe;

wherein, the controlling the cleaning device to start according to the cleaning signal specifically comprises:

controlling the electromagnetic valve to be opened according to the cleaning signal so as to open the blowback pipe; and

and acquiring the internal pressure of the air cylinder, and controlling the electromagnetic valve to be closed when the internal pressure is lower than a preset threshold value.

10. An air filter cleaning device, comprising:

a control module for acquiring an operating state of a vehicle, the control module being configured to generate a cleaning signal in accordance with the operating state;

the cleaning module is in communication connection with the control module and is configured to control the cleaning device to start according to the cleaning signal so as to shake off dust on the filter element in the air filter; and

and the dust extraction module is in communication connection with the control module and is configured to control the dust extraction device to be opened after a first preset time for generating the cleaning signal so as to extract dust in the air filter.

11. An air filter, characterized in that it comprises:

a housing;

the filter element is arranged in the shell, and a dust exhaust cavity is formed between the filter element and the shell; the shell comprises a first air suction port and a second air suction port, the first air suction port is positioned above the second air suction port in the gravity direction, and the first air suction port and the second air suction port are both communicated with the dust exhaust cavity;

a cleaning device configured to clean the filter element to shake off dust on the filter element into the dust exhaust chamber;

a dust extraction device configured to extract dust in the dust exhaust chamber; and

an air filter cleaning device in communication with the cleaning device and the dust extraction device, respectively, the air filter cleaning device being configured to perform the air filter cleaning method according to any one of claims 1 to 9.

12. A work vehicle, characterized in that the work vehicle comprises:

a vehicle chassis;

an air filter according to claim 11 disposed on the vehicle chassis, the air filter being configured to filter air entering the engine.

Technical Field

The application relates to the technical field of safe operation of engineering vehicles, in particular to an air filter cleaning method, a cleaning device, an air filter and an engineering vehicle.

Background

An air filter is a device provided on a work vehicle for filtering air entering an engine. Mainly reduces the possibility that dust, moisture and the like in the air enter the engine so as to slow down the abrasion of the engine during the operation.

In the prior art, an air filter includes a housing and a filter element. Air can pass through the filter element after entering the shell, and the filter element retains dust, moisture and the like in the air so as to finish the filtration of the air. As the filter element is used, dust continues to build up on the surface of the filter element. When the filter element is cleaned, the dust on the surface of the filter element can be shaken off in a blowing mode. However, due to the limitation of the housing, the dust leaving the filter element cannot timely leave the housing, and the dust is easily reattached to the surface of the filter element, so that the cleaning effect of the filter element is poor.

Content of application

In view of this, the application provides an air filter cleaning method, a cleaning device, an air filter and an engineering vehicle, which solve or improve the problem that dust is easily attached to a filter element again in the air filter cleaning process to cause poor cleaning effect.

In a first aspect, the present application provides a method of cleaning an air filter, the method comprising: acquiring the running state of a vehicle, and generating a cleaning signal according to the running state; controlling a cleaning device to start according to the cleaning signal so as to clean dust on a filter element in the air filter; and after the first preset time for generating the cleaning signal, controlling a dust extraction device to be started so as to extract the dust in the air filter.

According to the air filter cleaning method, when the vehicle runs, the running state of the vehicle is obtained, and the cleaning time of the air filter is determined according to the running state of the vehicle. When the air filter needs to be cleaned, a corresponding cleaning signal is generated, so that the cleaning device is controlled to be started, and the cleaning device shakes off dust on a filter element in the air filter; after the cleaning signal generation time exceeds the first preset time, the dust pumping device is controlled to be started, and then the dust pumping device can rapidly pump out dust flying in the air filter, so that the possibility that the dust is detained in the air filter is reduced, the possibility that the dust is attached to the filter element again is reduced, and the cleaning effect of the air filter is improved.

With reference to the first aspect, in one possible implementation manner, the air filter includes a housing and the filter element, a dust exhaust cavity is formed between the housing and the filter element, the housing includes a first air suction port and a second air suction port, and both the first air suction port and the second air suction port are communicated with the dust exhaust cavity; wherein the first air inlet is located above the second air inlet in the direction of gravity; after the first preset time for generating the cleaning signal, controlling the dust extraction device to be opened so as to extract the dust in the air filter, specifically comprising: and controlling the first air suction opening or the second air suction opening to be opened so as to control the dust pumping device to pump the dust in the dust exhaust cavity out of the first air suction opening or the second air suction opening.

In one possible implementation manner, the controlling the first air suction opening to be selectively opened or closed or the second air suction opening to be selectively opened or closed to control the dust extraction device to extract the dust in the dust exhaust chamber from the first air suction opening or the second air suction opening specifically includes: controlling the dust extraction device to start; closing the second suction port and opening the first suction port; and when the starting time of the dust extraction device exceeds a first preset time value, closing the first air suction port and opening the second air suction port.

In one possible implementation, the controlling the first air suction opening to be selectively opened or closed or the second air suction opening to be selectively opened or closed to control the dust extracting device to extract the dust in the dust discharging chamber from the first air suction opening or the second air suction opening further includes: and when the starting time of the dust extraction device exceeds a second preset time value, closing the dust extraction device.

In one possible implementation, the method further comprises the steps of acquiring a running state of the vehicle, generating a cleaning signal according to the running state: accumulating working condition information according to the starting information of the vehicle; stopping accumulation according to flameout information; and generating the cleaning signal according to the working condition information.

In one possible implementation manner, the operating condition information includes any one of the following information or a combination of multiple information: the method comprises the steps of increasing the operation time of the engineering vehicle, increasing the operation time of the engine, increasing the mileage and increasing the resistance value of the air filter.

In a possible implementation manner, the accumulating operating condition information according to the starting information of the vehicle specifically further includes: acquiring starting information of the vehicle; and manually inputting a cleaning command through a controller to generate the cleaning signal.

In one possible implementation, the air filter further includes: the air blowing pipe is arranged on the shell, and one end of the air blowing pipe is communicated with the dust exhaust cavity; the other end of the air blowing pipe is communicated with the air blowing piece; wherein, after the first preset time for generating the cleaning signal, controlling the dust extraction device to be opened so as to extract the dust in the air filter, specifically, the method further comprises: and after the first preset time for generating the cleaning signal, controlling the air blowing piece to operate so as to blow dust exhaust gas into the dust exhaust cavity through the air blowing pipe.

In one possible implementation, the cleaning device includes: the gas storage cylinder is used for storing first pressure gas; wherein the pressure of the first pressure gas is greater than atmospheric pressure; one end of the back flushing pipe is connected with the air cylinder, and the other end of the back flushing pipe is communicated with the shell and the filter element; the electromagnetic valve is arranged on the back flushing pipe and is configured to selectively open or close the back flushing pipe; wherein, the control of the cleaning device to start according to the cleaning signal so as to shake off the dust on the filter element in the air filter specifically comprises: controlling the electromagnetic valve to be opened according to the cleaning signal so as to open the blowback pipe; and acquiring the internal pressure of the air cylinder, and controlling the electromagnetic valve to be closed when the internal pressure is lower than a preset threshold value.

In a second aspect, the present application provides an air filter cleaning device, the device comprising: a control module for acquiring an operating state of a vehicle, the control module being configured to generate a cleaning signal in accordance with the operating state; the cleaning module is in communication connection with the control module and is configured to control the cleaning device to start according to the cleaning signal so as to shake off dust on the filter element in the air filter; and the dust extraction module is in communication connection with the control module and is configured to control the dust extraction device to be started after a first preset time for generating the cleaning signal so as to extract dust in the air filter.

The utility model provides an empty filter cleaning device who provides of second aspect acquires the running state of vehicle through control module, produces clean signal according to the running state, clean signal control clean module starts, dust on the filter core that clean module will empty the filter shakes and falls, after clean signal production exceeded first preset time, the dust flies upward in empty filter, restart takes out the dirt module, the dust that the dirt module will fly upward is taken out to the cleanness of accomplishing empty filter fast.

In a third aspect, the present application further provides an air filter, including: a housing; the filter element is arranged in the shell, and a dust exhaust cavity is formed between the filter element and the shell; the shell comprises a first air suction port and a second air suction port, the first air suction port is positioned above the second air suction port in the gravity direction, and the first air suction port and the second air suction port are both communicated with the dust exhaust cavity; a cleaning device configured to clean the filter element to shake off dust on the filter element into the dust exhaust chamber; a dust extraction device configured to extract dust in the dust exhaust chamber; and an air filter cleaning device which is in communication connection with the cleaning device and the dust extraction device respectively, wherein the air filter cleaning device is used for executing the air filter cleaning method in the first aspect of the application.

The utility model provides an empty filter that this application third aspect provided, in the use, the air gets into the casing and passes the filter core, when the air passes the filter core, the dust that contains in the filter core detention air etc. to accomplish the filtration to the air, when needs are cleaned the filter core, control cleaning device according to empty filter cleaning device and start, shake the dust on the filter core and fall in the dust exhaust intracavity, later empty filter cleaning device is being controlled and is being taken out the dust device and start, thereby take out the dust in the dust exhaust intracavity, with this time that reduces the dust and detain in the dust exhaust intracavity, reduce the possibility that the dust attaches to the filter core once more, thereby improve empty filter's clean effect.

In a fourth aspect, the present application further provides an engineering vehicle, comprising: a vehicle chassis; an air filter as described in the third aspect of the present application, provided on the vehicle chassis, the air filter being configured to filter air entering an engine.

According to the engineering vehicle provided by the fourth aspect of the application, when the engineering vehicle runs, the air filter filters air entering the engine, so that the possibility that impurities such as dust in the air enter the engine is reduced, and the abrasion of the engine in the running process is relieved.

Drawings

The above and other objects, features and advantages of the present application will become more apparent by describing in more detail embodiments of the present application with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of the embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings, like reference numbers generally represent like parts or steps.

FIG. 1 is a schematic flow chart of a method for cleaning an air filter according to some embodiments of the present disclosure.

Fig. 2 is a schematic flow chart illustrating the process of discharging dust in the dust discharging chamber according to some embodiments of the present disclosure.

FIG. 3 is a schematic flow chart illustrating a process for obtaining vehicle operating condition information according to some embodiments of the present disclosure.

FIG. 4 is a flow chart illustrating the generation of a cleaning signal by manual triggering according to some embodiments of the present disclosure.

FIG. 5 is a schematic flow chart illustrating the cleaning of an air filter according to some embodiments of the present disclosure.

FIG. 6 is a schematic diagram of an embodiment of a method for cleaning an air filter according to some embodiments of the present disclosure.

Fig. 7 is a schematic diagram showing the structure of an air filter cleaning device according to some embodiments of the present application.

Fig. 8 is a schematic diagram of the structure of an air filter according to some embodiments of the present disclosure.

Fig. 9 is a schematic cross-sectional view of an air filter according to some embodiments of the present disclosure.

Fig. 10 is a schematic diagram illustrating a configuration of an electronic device provided in some embodiments of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Summary of the application

To clean dust from the filter cartridge within the air filter, the air filter typically includes a separable housing and a removable filter cartridge. When the air filter needs to be cleaned, the filter element is detached through the separation shell, so that dust on the filter element is cleaned. After the cleaning is finished, the filter element is installed back, so that the air filter is cleaned. However, in the above process, the filter element needs to be manually assembled and disassembled, which results in a long time for the whole cleaning process.

In order to save time, a cleaning device can be arranged on the work vehicle. Cleaning device utilizes high-pressure gas to strike the filter core through blowing into air filter with high-pressure gas in to clear up the dust on the filter core, with this clearance of realizing dust on the filter core. However, because the filter cartridge is within the housing, when dust is separated from the filter cartridge, the dust can fly up within the housing. When utilizing the dead weight to discharge the dust gradually the casing, the dust is attached to the filter core surface again easily, leads to the dust clearance on filter core surface not thorough for the cleaning performance of empty filter is relatively poor.

In order to solve the problems, the application provides an air filter cleaning method, a cleaning device, an air filter and an engineering vehicle. The air filter may filter air introduced into the engine to retain dust and the like contained in the air while the construction vehicle is running. When the air filter needs to be cleaned, the air filter cleaning method is executed through the air filter cleaning device, the cleaning device is started firstly to shake off dust on the filter element, and then the dust pumping device is used for pumping out flying dust in the air filter, so that the time of the dust staying in the shell is shortened, and the cleaning effect of the air filter is improved.

Exemplary air Filter cleaning method

FIG. 1 is a schematic flow chart of a method for cleaning an air filter according to some embodiments of the present disclosure. Referring to fig. 1, the method includes:

step 100: and acquiring the running state of the vehicle, and generating a cleaning signal according to the running state.

The operation state of the vehicle indicates operation information of the vehicle, such as an operation time or an operation mileage, and the like. As the operation time or the operation mileage increases, dust on the filter element in the air filter also increases. Therefore, by acquiring the running state of the vehicle, the state of the air cleaner can be confirmed. When the running state of the vehicle meets the cleaning requirement of the air filter, a cleaning signal can be generated to control a corresponding device to automatically clean the air filter.

Step 200: and controlling the cleaning device to start according to the cleaning signal so as to clean dust on the filter element in the air filter.

The cleaning signal is a signal for controlling the activation of the cleaning device. The cleaning signal may be an electrical signal or a data signal. And the cleaning device is a device for inputting high-pressure gas into the air filter. Through releasing high-pressure gas in the sky filter in the twinkling of an eye, form the impact to the filter core in the sky filter to shake the dust on the filter core and fall, thereby realize the clearance to the filter core.

Step 300: after the first preset time for generating the cleaning signal, the dust extraction device is controlled to be started to extract the dust in the air filter.

The first preset time is a judgment criterion of the generation time of the cleaning signal. When the cleaning signal is generated, the cleaning device is immediately activated. And when the cleaning signal is generated for a time exceeding a first preset time, the cleaning device may have finished cleaning the filter element. At the moment, dust shaken off from the surface of the filter element just flies into the air filter, and then the dust pumping device is controlled to be started, so that the dust in the air filter is pumped out by the dust pumping device, and the time of the dust staying in the air filter is smoothly reduced.

According to the air filter cleaning method provided by the application, through the steps 100, 200 and 300, the running state of the vehicle is acquired when the vehicle runs, and the state of the air filter is judged according to the running state of the vehicle. When it is determined that the air filter needs to be cleaned, a corresponding cleaning signal is generated, thereby activating the cleaning device. The cleaning device thereby shakes off dust on the filter element in the air filter. When the generation time of the cleaning signal exceeds the first preset time, the dust extraction device is controlled to start. At the moment, the dust flies up in the air filter, and when the dust pumping device is started, the dust is pumped out of the air filter in a targeted manner, so that the time of the dust staying in the air filter is shortened, and the cleaning effect of the air filter is improved.

In some embodiments of the present application, the first preset time may include 0.5 seconds. Namely, after the cleaning signal is generated for 0.5 second, the dust extraction device is controlled to start. When the cleaning device is started, high-pressure gas is instantly and massively input into the air filter to complete the impact on the filter element. The release time of the high-pressure gas is about 1 second, so that the dust pumping device is started within 0.5 second, flying dust can be rapidly pumped out, and the possibility that the filter element is damaged due to too large sudden change degree of pressure in the air filter can be reduced. However, it should be understood that in other embodiments of the present application, the first preset time may also be other time durations, for example, a time period in a range from 0.3 seconds to 0.7 seconds, and the specific time duration of the first preset time is not strictly limited herein.

In some embodiments of the present application, an air filter includes a housing and a filter element. A dust exhaust cavity is formed between the shell and the filter element. The shell further comprises a first air suction port and a second air suction port, and the first air suction port and the second air suction port are communicated with the dust exhaust cavity. Wherein, in the gravity direction, the first air inlet is positioned above the second air inlet.

In some embodiments of the present application, the step 300 specifically includes:

step 310: the opening of the second air suction port of the first air suction port is controlled so as to control the dust pumping device to pump out the dust in the dust exhaust cavity from the first air suction port or the second air suction port.

The dust can enter the dust exhaust cavity after leaving the filter element, and due to the self-weight, one part of dust can be directly deposited at the bottom of the dust exhaust cavity, and the other part of dust can fly in the dust exhaust cavity. Therefore, the first air suction port and the second air suction port are arranged, flying dust is sucked out through the first air suction port, and precipitated dust is sucked out through the second air suction port, so that the dust is discharged out of the shell body quickly.

Through the step 310, when the dust falls into the dust exhaust chamber, the dust flying in the dust exhaust chamber is extracted from the housing through the first air suction port by controlling the dust extraction device, and the settled dust is extracted from the housing through the second air suction port, so that the dust is extracted from the housing quickly.

Fig. 2 is a schematic flow chart illustrating the process of discharging dust in the dust discharging chamber according to some embodiments of the present disclosure. Referring to fig. 2, the step 310 specifically includes:

step 311: and controlling the dust extraction device to start.

The dust suction device is used for generating suction force in the dust exhaust cavity to suck out dust. When the dust extraction device is started, the dust is sucked out of the dust exhaust cavity by using suction force.

Step 312: the second suction port is closed and the first suction port is opened.

The first suction port is located above the second suction port in the direction of gravity. Therefore, the second air suction port is closed first, the first air suction port is opened, and the dust flying in the dust exhaust cavity is firstly drawn out of the dust exhaust cavity. The remaining dust in the dust exhaust chamber is deposited at the bottom of the dust exhaust chamber, and the possibility of flying is low, so that it is difficult to exhaust the dust through the first air intake.

Step 313, when the start time of the dust extraction device exceeds the first preset time value, the first air inlet is closed and the second air inlet is opened.

The first preset time value is a standard for judging the starting time of the dust extraction device. When the starting time of the dust extraction device exceeds a first preset time value, the dust extraction device indicates that the dust flying in the dust exhaust cavity is completely extracted. At this time, the first air suction port is closed, and the second air suction port is opened, so that the dust precipitated at the bottom of the dust exhaust cavity is sucked out. Since the dust is deposited by its own weight, the dust is less likely to fly when being drawn out through the second air inlet, and thus the dust is not likely to fly when being completely discharged through the second air inlet.

Through the steps 311, 312 and 313, when the dust in the dust exhaust chamber is extracted, the dust extraction device is first started, the second air inlet is closed to open the first air inlet, and the dust extraction device extracts the flying dust through the first air inlet. When the running time of the dust extraction device exceeds a first preset time value, the flying dust is completely extracted, at the moment, the first air suction port is closed, the second air suction port is opened, and the settled dust at the bottom of the dust exhaust cavity is extracted, so that the dust is rapidly extracted.

In some embodiments of the present application, the step 310 further includes: and when the starting time of the dust extraction device exceeds a second preset time value, closing the dust extraction device. The second preset time value is a judgment standard for the running time of the dust extraction device.

The second preset time value is different from the first preset time value in that the first preset time value is a judgment standard for the interval time from the opening to the closing of the first air suction port when the dust extraction device is in operation. I.e. when the operating time of the dust extraction device exceeds a first predetermined time value, the first suction port is closed. And the second preset time value is a judgment standard of the interval time from the start to the stop of the dust extraction device when the dust extraction device runs. I.e. when the operating time of the dust extraction device exceeds a second preset time value, the dust extraction device is automatically stopped. Therefore, the automation degree of the dust extraction device can be improved.

In some embodiments of the present application, the running time of the dust extraction device can be accumulated in two ways, one is full-time accumulation, and the other is staged accumulation.

The whole accumulation process is carried out from the start to the stop of the dust extraction device. At this time, the first preset time value may be set to 10 seconds, and the second preset time value may be set to 40 seconds. When the operation time of the dust extraction device exceeds 10 seconds, the first air suction port is closed, and the second air suction port is opened. When the running time of the dust extraction device exceeds 40 seconds, the dust extraction device is automatically closed.

The staged integration divides the operation time of the dust extraction device into a first stage and a second stage. At this time, the first preset time value may be set to 10 seconds, and the second preset time value may be set to 30 seconds. When the first-stage operation time of the dust extraction device is 10 seconds, the first air suction port is closed, and the second air suction port is opened. At the moment, the first stage stops accumulating, the second stage running time starts accumulating, and when the second stage running time exceeds 30 seconds, the dust extraction device is automatically closed.

However, it should be understood that in other embodiments of the present application, the first preset time value and the second preset time value may have other time durations, for example, the first preset time value may have a range of time periods from 9 seconds to 12 seconds, and the second preset time value may have a range of time periods from 38 seconds to 42 seconds or from 28 seconds to 32 seconds. The specific durations of the first preset time value and the second preset time value are not strictly limited.

FIG. 3 is a schematic flow chart illustrating a process for obtaining vehicle operating condition information according to some embodiments of the present disclosure. Referring to fig. 3, the step 100 specifically includes:

step 110: and accumulating the working condition information according to the starting information of the vehicle.

The start information of the vehicle indicates that the vehicle has started, at which time the vehicle may not be moving, but various devices of the vehicle have been powered on. The operating condition information of the vehicle may be a driving time, an engine operating time, a mileage value, a resistance value of the air filter, and the like of the vehicle.

Step 120: and stopping accumulation according to the flameout information.

The key-off information indicates that the vehicle is stopped. When flameout information appears, the running time, the engine running time, the mileage value, the air filter resistance value and the like of the vehicle stop being accumulated, and the information accumulated until the flameout information is generated is the working condition information generated by the vehicle in the current running process.

Step 130: and generating a cleaning signal according to the working condition information.

The operating condition information represents the operating information of the vehicle during operation. Along with the accumulation of the working condition information, the accumulation condition of dust on the filter element in the air filter can be determined. When the working condition information is accumulated to meet the regulation of cleanness, a cleaning signal is generated correspondingly while the vehicle is shut down, so that the cleaning device is started to clean the filter element of the air filter.

Meanwhile, in the steps 110, 120 and 130, when the vehicle is started, the working condition information of the vehicle starts to be accumulated. When the vehicle is flamed out, the working condition information of the vehicle stops accumulating, so that the running information of the vehicle is automatically checked and acquired, and the cleaning time of the air filter is automatically judged. When the working condition information meets the cleaning requirement, the cleaning signal is automatically sent out when the vehicle is flamed out, so that the cleaning device is controlled to clean the filter element of the air filter.

In some embodiments of the present application, the operating condition information includes one or a combination of information of: the method comprises the steps of increasing the operation time of the engineering vehicle, increasing the operation time of the engine, increasing the mileage and increasing the resistance value of the air filter.

The work vehicle run time delta characterizes the work vehicle run time since the last air filter cleaning. The longer this run time, the more dust on the filter element in the empty filter is indicated. A first cleaning time may be set and a cleaning signal may be generated when the work vehicle operating time increases beyond the cleaning time.

The engine run time delta characterizes the run time of the engine since the last air filter clean. Because the generator is directly connected to the air filter, the running time of the engine can be regarded as the running time of the air filter. The longer the operating time of the air filter, the more dust on the surface of the filter element. A second cleaning time may be set and the cleaning signal may be generated when the engine run time increment is greater than the second cleaning time.

The mileage increment represents the operating mileage of the construction vehicle since the last air filter cleaning. The larger the running mileage is, the more the dust on the filter element in the air filter is. A cleaning mileage may be set and a cleaning signal may be generated when the mileage increment is greater than the cleaning mileage.

The increase in air filter resistance value is indicative of the magnitude of resistance of air as it is filtered through the air filter. When the resistance amplitude increases, the increase of the resistance value of the air filter is shown to increase. Can set for one and predetermine the resistance value, when this resistance value increment is greater than predetermineeing the resistance value, it is relatively poor to the filter effect of air this moment to show empty filter, can produce clean signal.

In the four parameters of the engineering vehicle operation time increment, the engine operation time increment, the mileage increment and the air filter resistance value increment, the mileage increment and the engineering vehicle operation time increment are easy to obtain, and the mileage increment and the engineering vehicle operation time increment can be obtained by installing a sensor. Therefore, the mileage increment or the operation time increment of the engineering vehicle can be acquired preferentially for judgment. Both the mileage increment and the engineering vehicle operation time increment may be acquired simultaneously, or only one of them may be acquired.

While the increase in engine run time and the increase in air filter resistance values are more difficult to obtain. It needs to be obtained through more complicated circuit design and logic operation, and thus can be obtained later or not.

The engineering vehicle operation time increment and the engine operation time increment are used as first conditions, the mileage increment and the air filter resistance value increment are used as second conditions, and the cleaning signal is generated when one parameter of the two conditions meets the cleaning standard.

Specifically, how the four parameters are combined and judged can be specifically selected according to the actual vehicle condition, and the application is not limited. Meanwhile, whether the cleaning signal needs to be generated or not can be judged by acquiring other parameters of the vehicle as long as the parameters can directly or indirectly indicate the state of the air filter.

FIG. 4 is a flow chart illustrating the generation of a cleaning signal by manual triggering according to some embodiments of the present disclosure. Referring to fig. 4, in some embodiments of the present application, the step 110 further includes:

step 111: the start information of the vehicle is acquired.

When the vehicle start information is present, it indicates that the vehicle is in the powered state, but the engine may not be running at this time, and the cleaning information may be generated to clean the air filter.

Step 112: the cleaning command is manually input through the controller to generate a cleaning signal.

When the driver artificially judges that the air filter needs to be cleaned, the controller can be manually operated in a vehicle power-on state to generate a cleaning signal, so that the air filter is cleaned.

Through the steps 111 and 112, after the vehicle is started, the cleaning device is controlled to be started by manually inputting a cleaning command so as to clean the air filter, and at the moment, the air filter is directly cleaned without judging the working condition information of the engineering vehicle.

In some embodiments of the present application, the manual operation of the controller includes two modes, one is hardware triggered and one is software triggered. Hardware triggering means that a cleaning button is arranged on a vehicle, and when the cleaning button is manually pressed, a cleaning signal is generated. The software triggering means that a touch screen is arranged on the vehicle, and the cleaning signal is generated by operating software on the touch screen.

In some embodiments of the present application, the air filter further comprises an insufflation tube and an insufflation member. The air blowing pipe is arranged on the shell, one end of the air blowing pipe is communicated with the dust exhaust cavity, and the other end of the air blowing pipe is communicated with the air blowing piece.

Wherein, the step 300 further comprises: and after the time for generating the cleaning signal exceeds the first preset time, controlling the operation of the air blowing piece so as to blow dust exhaust air into the dust exhaust cavity through the air blowing pipe.

Blow the piece and blow in the dust exhaust intracavity with the dust exhaust gas through the start-up, the dust exhaust gas can flow to taking out dirt device one side to blow the dust to taking out dirt device, with this dust exhaust effect to the dust exhaust chamber that improves.

In some embodiments of the present application, the cleaning device includes an air reservoir, a blow-back tube, and a solenoid valve. The air storage cylinder is used for storing first pressure gas. Wherein the pressure of the first pressure gas is greater than atmospheric pressure, for example the pressure of the first pressure gas may be 0.6-0.8 mpa. One end of the back flushing pipe is connected with the air storage cylinder, and the other end of the back flushing pipe is communicated with the shell and the filter element. The solenoid valve is arranged on the blowback pipe and is configured to selectively open or close the blowback pipe.

Through setting up the blowback pipe, when the solenoid valve was opened, the blowback pipe blew into the air filter with the first pressure gas in the gas receiver. The first pressure gas entering the air filter flows from the inner side of the filter element to the outer side of the filter element. The first pressure gas thus flows in a direction opposite to the flow direction of the air entering the engine when the engine is running. The first pressure gas reversely passes through the filter element to shake off the dust on the outer surface of the filter element.

FIG. 5 is a schematic flow chart illustrating the cleaning of an air filter according to some embodiments of the present disclosure. Referring to fig. 5, the step 200 specifically includes:

step 210: and controlling the solenoid valve to open according to the cleaning signal so as to open the blowback pipe.

The electromagnetic valve controls the opening and closing of the blowback pipe. And the high-pressure gas is stored in the air storage cylinder, when the blowback pipe is opened, the high-pressure gas can be automatically and quickly released into the air filter through the blowback pipe, and the impact is formed on the filter element in the air filter, so that the dust on the filter element is shaken off.

Step 220: and acquiring the internal pressure in the air cylinder, and controlling the electromagnetic valve to be closed when the internal pressure is lower than a preset threshold value.

The internal pressure of the gas cylinder can directly represent the pressure value of the first pressure gas. When the internal pressure decreases, the pressure value of the first pressure gas decreases. When the internal pressure is lower than the preset threshold value, the first pressure gas loses the effect of back-blowing cleaning the air filter. At the moment, the electromagnetic valve is controlled to be closed to close the blowback pipe, so that the possibility of dust flying into the air storage cylinder is reduced.

Through the steps 210 and 220, before the dust is cleaned, the first pressure gas is filled in the air storage cylinder. When the pressure value in the air cylinder meets the cleaning standard, the electromagnetic valve is opened again, and high-pressure gas is quickly released into the air filter through the blowback pipe so as to blow back the filter element of the air filter. When the internal pressure in the air reservoir is below a predetermined threshold, it indicates that the pressure of the first pressure gas no longer meets the cleaning criteria. At this time, the electromagnetic valve is closed, so that the blowback pipe is closed to isolate the air cylinder and the air filter, thereby reducing the possibility of dust and the like flying into the air cylinder.

FIG. 6 is a schematic diagram of an embodiment of a method for cleaning an air filter according to some embodiments of the present disclosure. As shown with reference to fig. 6. When the method is operated, the starting information of the vehicle is firstly acquired (S10). When the start information is present, accumulation of the condition information is started (S20). It may also be manually triggered (S30) to generate a cleaning signal (S40). When the vehicle key-off information is generated (S50), the accumulation of the condition information is stopped, and it is judged whether the condition information satisfies the cleanliness criterion (S21), and if the cleanliness requirement is satisfied, a cleanliness signal is generated (S40).

When the cleaning signal is generated (S40), the solenoid valve is controlled to open (S60) to open the blowback pipe, and the first pressure gas in the gas cylinder is released into the air filter (S61). When the solenoid valve is opened for more than a first preset time (S62), i.e., when the generation time of the cleaning signal exceeds the first preset time, the dust exhaust device is opened (S70). When the dust extraction device is turned on (S70), the second air inlet is closed and the first air inlet is opened (S71), and when the operation time of the dust extraction device exceeds a first preset time value (S72), the second air inlet is opened and the first air inlet is closed (S73). When the operation time of the dust exhaust apparatus exceeds a second preset time value (S74), the dust exhaust apparatus is turned off (S75). When the internal pressure in the air cylinder is less than the preset threshold (S63), the control solenoid valve is closed (S64) to stop the blowback.

Exemplary air Filter cleaning device

Fig. 7 is a schematic diagram showing the structure of an air filter cleaning device according to some embodiments of the present application. Referring to FIG. 7, the apparatus 400 includes a control module 410, a cleaning module 420, and a dust extraction module 430. The control module 410 is configured to obtain an operating condition of the vehicle, and the control module 410 is configured to generate a cleaning signal based on the operating condition. The cleaning module 420 is communicatively coupled to the control module 410, and the cleaning module 420 is configured to control activation of the cleaning device based on the cleaning signal to shake off dust from the filter element within the air filter. The dust extraction module 430 is communicatively connected to the control module 410, and the dust extraction module 430 is configured to control the dust extraction device to be turned on after a first preset time of generating the cleaning signal, so as to extract dust in the air filter.

According to the air filter cleaning device 400 provided by the embodiment of the application, the running state of a vehicle is acquired through the control module 410, and a cleaning signal is generated according to the running state of the vehicle. By providing the cleaning module 420 and the dust extraction module 430, when the cleaning signal is generated, the cleaning module is controlled to be activated to shake off dust on the filter element in the air filter. When the generation time of the cleaning signal exceeds a first preset time, the dust pumping module 430 controls the dust pumping device to start so as to pump out the dust flying in the air filter.

In some embodiments of the present application, an air filter includes a housing and a filter element. The filter core sets up in the casing, forms the dust exhaust chamber between filter core and the casing. The housing includes a first air intake and a second air intake, the first air intake being located above the second air intake in the direction of gravity. The dust extraction module 430 includes an on-off unit configured to control the first air inlet to be selectively opened or closed, or the second air inlet to be selectively opened or closed, so as to control the dust extraction device to extract the dust in the dust discharge chamber from the first air inlet or the second air inlet.

In some embodiments of the present application, the dust extraction module 430 further comprises a time cell. The time unit is constructed to monitor the running time of the dust extraction module and is in communication connection with the opening and closing unit. The time unit is configured to control the opening and closing unit to close the second air suction port and open the first air suction port when the dust extraction device is started; when the starting time of the dust extraction device exceeds a first preset time value, the opening and closing unit is controlled to close the first air suction port and open the second air suction port.

In some embodiments of the present application, the dust extraction device is turned off when the time unit detects that the operation time of the dust extraction device exceeds a second preset time value.

In some embodiments of the present application, the control module 410 includes a monitoring unit and an accumulation unit. The monitoring unit is used for monitoring the starting information and the flameout information of the vehicle. The monitoring unit is in communication connection with the accumulation unit, and the accumulation unit is used for accumulating the working condition information when the monitoring unit monitors the starting information and stopping accumulation when the monitoring unit monitors the flameout information. The accumulation unit is configured to generate a cleaning signal according to the operating condition information.

In some embodiments of the present application, the operating condition information may include a combination of one or more of the following: the method comprises the steps of increasing the operation time of the engineering vehicle, increasing the operation time of the engine, increasing the mileage and increasing the resistance value of the air filter.

In some embodiments of the present application, the control module 410 further comprises a manual trigger unit. The manual trigger unit is configured to manually input a cleaning instruction to generate cleaning information.

In some embodiments of the present application, the air filter further comprises an insufflation member and an insufflation tube. The air blowing pipe is arranged on the shell, one end of the air blowing pipe is communicated with the dust exhaust cavity, and the other end of the air blowing pipe is communicated with the air blowing piece. The blowing member is configured to blow a dust exhaust gas into the dust exhaust chamber through the blowing pipe.

The apparatus 400 further comprises a dust blowing module, the dust blowing module is in communication connection with the air blowing member and the control module 410 respectively, and the dust blowing module is configured to obtain a cleaning signal generated by the control module 410 and control the air blowing member to operate after the time for generating the cleaning signal exceeds a first preset time.

In some embodiments of the present application, the cleaning device includes an air reservoir, a blow-back tube, and a solenoid valve. The air storage cylinder is used for storing first pressure gas. Wherein the pressure of the first pressure gas is greater than atmospheric pressure. One end of the back flushing pipe is communicated with the air storage cylinder, and the other end of the back flushing pipe is communicated with the shell and the filter element. The solenoid valve is arranged on the blowback pipe and is configured to selectively open or close the blowback pipe.

The cleaning module 420 includes a blowback unit and a feedback unit. The back-blowing unit is in communication connection with the electromagnetic valve, the back-blowing unit is in communication connection with the accumulation unit, and the back-blowing unit is configured to control the electromagnetic valve to be opened according to the cleaning signal so as to open the back-blowing pipe. The feedback unit is used for monitoring the internal pressure in the air storage cylinder and comparing the internal pressure with a preset threshold value. The feedback unit is in communication connection with the back flushing unit and is configured to control the back flushing unit to close the electromagnetic valve when the internal pressure is lower than a preset threshold value.

Exemplary air Filter

Fig. 8 is a schematic diagram of the structure of an air filter according to some embodiments of the present disclosure. Fig. 9 is a schematic cross-sectional view of an air filter according to some embodiments of the present disclosure. Referring to fig. 8 and 9, the air filter 500 includes a housing 510, a filter element 520, a cleaning device 530, a dust suction device 540, and an air filter cleaning device 400. The filter cartridge 510 is disposed within the housing 500, and a dust exhaust chamber 511 is formed between the filter cartridge 520 and the housing 510.

Wherein the housing 510 includes a first suction port and a second suction port. In the gravity direction, the first air suction port is located above the second air suction port, and both the first air suction port and the second air suction port are communicated with the dust exhaust chamber 511. The cleaning device 530 is configured to clean the filter element 520 to shake off dust on the filter element 520 into the dust exhaust chamber 511. The dust extraction device 540 is configured to extract dust in the dust exhaust chamber 511. The air filter cleaning device 400 is communicatively connected to the cleaning device 530 and the dust suction device 540, respectively, and the air filter cleaning device 400 is used for performing the air filter cleaning method described in the above embodiments.

In the air filter 500 provided in the embodiment of the present application, when air is filtered, the air enters the housing 510 and passes through the filter element 520, and the filter element 520 retains impurities in the air to complete the filtering. When cleaning is required, the air filter cleaning method is performed by the air filter cleaning device 400 to control the cleaning device 530 and the dust exhaust device 540 to operate in sequence to achieve cleaning of the air filter 500.

Since the air filter 500 is provided with the air filter cleaning device 400, the air filter 500 has all the technical effects of the air filter cleaning device 400, which will not be described herein.

Referring to fig. 9, in some embodiments of the present application, cartridge 520 includes an inner cartridge 522 and an outer cartridge 521. The inner filter element 522 is arranged in the outer filter element 521, a back-blowing cavity 512 is enclosed between the inner filter element 522 and the outer filter element 521, and the back-blowing cavity 512 is communicated with the cleaning device 530. A dust exhaust chamber 511 is enclosed between the outer core 521 and the casing 510, and the dust exhaust chamber 511 is communicated with the dust suction device 540 through the first suction port and the second suction port.

Referring to FIG. 9, in some embodiments of the present application, the cleaning device 530 includes an air reservoir, a blowback pipe 531, and a solenoid valve. The air cylinder is disposed outside the housing 510, and is used to store the first pressure gas. Wherein the pressure of the first pressure gas is greater than atmospheric pressure. One end of the back flushing pipe 531 is communicated with the air reservoir, and the other end of the back flushing pipe is communicated with the back flushing cavity. The electromagnetic valve is arranged in the blowback pipe and is configured to selectively open or close the blowback pipe.

Referring to FIG. 10, in some embodiments of the present application, the air filter 500 further comprises an insufflation member and an insufflation tube. The air blowing pipe is arranged on the shell, one end of the air blowing pipe is communicated with the dust exhaust cavity 511, and the other end of the air blowing pipe is communicated with the air blowing piece. The blowing member is configured to blow the dust exhaust gas into the dust exhaust chamber 511 through the blowing pipe. The air blowing pipe and the dust extraction device are respectively positioned on two end surfaces of the shell.

Exemplary work vehicle

The work vehicle comprises a vehicle chassis and an air filter as described in any of the above embodiments. An air filter is disposed on the vehicle chassis, the air filter being configured to filter air entering the engine.

The application provides an engineering vehicle, when the operation, filters the air that gets into the engine through empty filter to reduce the possibility in dust etc. in the air gets into the engine, be favorable to alleviating the wearing and tearing of engine.

Since the engineering vehicle is provided with the air filter, the engineering vehicle has all the technical effects of the air filter, and the details are not described herein.

Exemplary electronic device

Fig. 10 is a schematic diagram illustrating a configuration of an electronic device provided in some embodiments of the present application. As shown in fig. 10, the electronic device 910 includes: one or more processors 9101 and memory 9102; and computer program instructions stored in the memory 9102, which, when executed by the processor 9101, cause the processor 9101 to perform the air filter cleaning method of any of the embodiments described above.

Processor 9101 can be a Central Processing Unit (CPU) or other form of processing unit having data processing capabilities and/or instruction execution capabilities, and can control other components in an electronic device to perform desired functions.

Memory 9102 may include one or more computer program products that may include various forms of computer-readable storage media, such as volatile memory and/or non-volatile memory. The volatile memory may include, for example, Random Access Memory (RAM), cache memory (cache), and/or the like. The non-volatile memory may include, for example, Read Only Memory (ROM), hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium and executed by processor 9101 to implement the steps in the air filter cleaning methods of the various embodiments of the present application described above and/or other desired functions. Information such as vehicle acceleration, road condition information, and vehicle hydraulic pressure may also be stored in the computer readable storage medium.

In one example, the electronic device 910 may further include: an input device 9103 and an output device 9104, which are interconnected by a bus system and/or other form of connection mechanism (not shown in fig. 10).

Of course, for simplicity, only some of the components of the electronic device 910 relevant to the present application are shown in fig. 10, and components such as buses, input devices/output interfaces, and the like are omitted. In addition, the electronic device 910 may include any other suitable components depending on the particular application.

Exemplary computer program product and computer-readable storage Medium

In addition to the above-described methods and apparatus, embodiments of the present application may also be a computer program product comprising computer program instructions which, when executed by a processor, cause the processor to perform the steps of the air filter cleaning method according to any of the above-described embodiments.

The computer program product may write program code for carrying out operations for embodiments of the present application in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server.

Furthermore, embodiments of the present application may also be a computer-readable storage medium having stored thereon computer program instructions that, when executed by a processor, cause the processor to perform the steps of the air filter cleaning method according to various embodiments of the present application described in the "exemplary air filter cleaning method" section above in the present specification.

The computer-readable storage medium may take any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may include, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a random access memory ((RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

The foregoing describes the general principles of the present application in conjunction with specific embodiments, however, it is noted that the advantages, effects, etc. mentioned in the present application are merely examples and are not limiting, and they should not be considered essential to the various embodiments of the present application. Furthermore, the foregoing disclosure of specific details is for the purpose of illustration and description and is not intended to be limiting, since the foregoing disclosure is not intended to be exhaustive or to limit the disclosure to the precise details disclosed.

The block diagrams of devices, apparatuses, systems referred to in this application are only given as illustrative examples and are not intended to require or imply that the connections, arrangements, configurations, etc. must be made in the manner shown in the block diagrams. These devices, apparatuses, devices, systems may be connected, arranged, configured in any manner, as will be appreciated by those skilled in the art. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including, but not limited to," and are used interchangeably therewith. The words "or" and "as used herein mean, and are used interchangeably with, the word" and/or, "unless the context clearly dictates otherwise. The word "such as" is used herein to mean, and is used interchangeably with, the phrase "such as but not limited to".

It should also be noted that in the devices, apparatuses, and methods of the present application, the components or steps may be decomposed and/or recombined. These decompositions and/or recombinations are to be considered as equivalents of the present application.

The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The foregoing description has been presented for purposes of illustration and description. Furthermore, the description is not intended to limit embodiments of the application to the form disclosed herein. While a number of example aspects and embodiments have been discussed above, those of skill in the art will recognize certain variations, modifications, alterations, additions and sub-combinations thereof.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modifications, equivalents and the like that are within the spirit and principle of the present application should be included in the scope of the present application.