CN112814812A - Air filter self-cleaning system, method and device and storage medium - Google Patents
Air filter self-cleaning system, method and device and storage medium Download PDFInfo
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- CN112814812A CN112814812A CN202110008710.9A CN202110008710A CN112814812A CN 112814812 A CN112814812 A CN 112814812A CN 202110008710 A CN202110008710 A CN 202110008710A CN 112814812 A CN112814812 A CN 112814812A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/02—Air cleaners
- F02M35/08—Air cleaners with means for removing dust, particles or liquids from cleaners; with means for indicating clogging; with by-pass means; Regeneration of cleaners
Abstract
The invention discloses an air filter self-cleaning system, a method, a device and a storage medium, wherein the air filter self-cleaning system comprises a cover body, an engine and an air filter, wherein the engine is arranged in the cover body and is connected with the cover body; the air filter is arranged on the cover body through a first suspension and is communicated with the engine, wherein the first suspension is an active suspension or a semi-active suspension. The air cleaner self-cleaning method comprises the following steps: when the air filter needs to be cleaned, acquiring the excitation frequency of the engine; the first suspension is adjusted by utilizing the excitation frequency so that the resonance frequency of the first suspension and the air filter is equal to the excitation frequency of the engine, the air filter is self-cleaned through resonance, therefore, the self-cleaning of the air filter can be completed without stopping the engine, and the vibration source is the engine, so that additional vibration sources are not required to be introduced, and the vibration noise of the whole machine is not increased.
Description
Technical Field
The invention relates to the technical field of machinery, in particular to a self-cleaning system, a method and a device for an air filter and a storage medium.
Background
Air cleaners (also referred to as air filters) are used primarily in the fields of pneumatic machines, internal combustion machines, etc. to provide clean air to these machines to prevent the machines from drawing in air with foreign particles during operation, which increases the probability of abrasion and damage. The main components of an air cleaner are a filter element, which is the main filtering part, which undertakes the filtering of the gas, and a housing, which is the external structure that provides the necessary protection for the filter element. The air cleaner is required to be capable of performing high-efficiency air cleaning operation, not to increase excessive resistance to air flow, and to be capable of continuous operation for a long time.
At present, automatic dust removal design is not carried out in air cleaner, and when air cleaner needs the clearance, needs artifical clearance, and it is consuming more to dismantle the installation, and probably damages air cleaner's filter core.
Disclosure of Invention
In view of this, embodiments of the present invention provide a system, a method, a device and a storage medium for self-cleaning an air cleaner, so as to achieve automatic dust removal of the air cleaner.
According to a first aspect, embodiments of the present disclosure provide an air cleaner self-cleaning system, comprising:
a cover body;
an engine disposed in the hood and connected to the hood;
the air filter is arranged on the cover body through a first suspension and is communicated with the engine, wherein the first suspension is an active suspension or a semi-active suspension;
a controller communicatively coupled with the engine and the first mount.
According to the air filter self-cleaning system provided by the embodiment of the invention, because the first suspension is the active suspension or the semi-active suspension, when the air filter needs to be cleaned, the controller can adjust the first suspension to enable the resonance frequency of the first suspension and the air filter to be equal to the excitation frequency of the engine, the air filter can be self-cleaned through the resonance, so that the air filter can be self-cleaned without stopping the machine, the vibration source is the engine, an additional vibration source is not required to be introduced, and the vibration noise of the whole machine is not increased.
With reference to the first aspect, in a first embodiment of the first aspect, the first suspension has a first stiffness state and a second stiffness state; wherein a resonant frequency of the first mount with the air cleaner at the first stiffness state is equal to an excitation frequency of the engine; in the second stiffness state, a resonant frequency of the first mount with the air cleaner is greater than an excitation frequency of the engine.
With reference to the first aspect, in a second embodiment of the first aspect, the active suspension is a decoupled electromagnetic hydraulic active suspension; or, a heatable rubber rod is used as a main spring of the semi-active suspension in the semi-active suspension.
With reference to the first aspect, in a third embodiment of the first aspect, the engine is provided on the cover body by a second mount.
With reference to the first aspect, in a fourth implementation manner of the first aspect, the apparatus further includes an interaction device, and the interaction device is communicatively connected to the controller.
According to a second aspect, an embodiment of the present invention provides an air cleaner self-cleaning method applied to an air cleaner self-cleaning system, where the air cleaner self-cleaning system includes a hood, an engine, and an air cleaner, where the engine is disposed in the hood and connected to the hood; the air filter is arranged on the cover body through a first suspension and is communicated with the engine, wherein the first suspension is an active suspension or a semi-active suspension, and the air filter self-cleaning method comprises the following steps:
acquiring an excitation frequency of the engine when the air filter needs cleaning;
adjusting the first mount using the excitation frequency such that a resonant frequency of the first mount with the air cleaner, by which the air cleaner self-cleans, is equal to an excitation frequency of the engine.
According to the self-cleaning method of the air filter, when the air filter needs cleaning, the excitation frequency of the engine is obtained; and adjusting the first suspension by utilizing the excitation frequency to enable the resonance frequency of the first suspension and the air filter to be equal to the excitation frequency of the engine, so that the air filter can be self-cleaned through resonance, the self-cleaning of the air filter can be completed without stopping the engine, and the vibration source is the engine, so that the additional vibration source is not required to be introduced, and the vibration noise of the whole engine is not increased.
With reference to the second aspect, in the first embodiment of the second aspect, before obtaining the excitation frequency of the engine, the method further includes:
acquiring working condition information of the engine;
judging whether the engine is in an idling working condition or not according to the working condition information;
and when the engine is not in the idle working condition, adjusting the engine to enable the engine to be in the idle working condition.
With reference to the first embodiment of the second aspect, in the second embodiment of the second aspect, before obtaining the excitation frequency of the engine, the method further includes determining the excitation frequency of the engine by:
acquiring the rotating speed of the engine under an idling working condition;
acquiring the number of cylinders of the engine;
and determining the excitation frequency of the engine by using the rotating speed of the engine under the idle working condition and the number of cylinders of the engine.
With reference to the second aspect, in a third embodiment of the second aspect, after the air cleaner self-cleans by the resonance, the method further includes:
acquiring the self-cleaning duration of the air filter;
judging whether the duration reaches a preset threshold value;
when the period of time reaches the threshold, adjusting the first suspension such that a resonant frequency of the first suspension with the air filter is greater than an excitation frequency of the engine.
According to a third aspect, an embodiment of the present invention provides an air cleaner self-cleaning device applied to an air cleaner self-cleaning system, where the air cleaner self-cleaning system includes a hood, an engine, and an air cleaner, where the engine is disposed in the hood and connected to the hood; the air filter is arranged on the cover body through a first suspension and is communicated with the engine, wherein the first suspension is an active suspension or a semi-active suspension, and the air filter self-cleaning device comprises:
an acquisition module for acquiring an excitation frequency of the engine when the air cleaner needs cleaning;
an adjustment module to adjust the first suspension using the excitation frequency such that a resonant frequency of the first suspension with the air cleaner is equal to an excitation frequency of the engine, the air cleaner self-cleaning by the resonance.
According to a fourth aspect, embodiments of the present invention provide a computer-readable storage medium storing computer instructions for causing a computer to perform the air cleaner self-cleaning method of the second aspect or any one of the embodiments of the second aspect.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:
FIG. 1 illustrates a schematic diagram of a specific example of an air cleaner self-cleaning system;
FIG. 2 is a schematic flow chart showing a self-cleaning method of an air cleaner according to embodiment 2 of the present invention;
FIG. 3 is a schematic view showing the construction of a self-cleaning device for an air cleaner according to embodiment 3 of the present invention;
wherein:
1. an engine; 2. suspending an engine; 3. an engine cover; 4. an air connecting pipe; 5. an air filter prefilter; 6. a first suspension; 7. an air cleaner; 8. a platform; 9. and (4) suspending an engine.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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 invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
One embodiment of an air cleaner self-cleaning system, as shown in fig. 1, includes a housing, an engine 1, an air cleaner 7, and a controller, the engine 1 being disposed in and coupled to the housing; the air filter 7 is arranged on the cover body through a first suspension 6 and is communicated with the engine 1, wherein the first suspension 6 is an active suspension or a semi-active suspension; the controller is in communication with the engine 1 and the first mount 6.
In the air cleaner self-cleaning system provided by embodiment 1 of the present invention, because the first suspension is an active suspension or a semi-active suspension, when the air cleaner 7 needs to be cleaned, the controller may adjust the first suspension 6 so that the resonance frequency of the first suspension 6 and the air cleaner 7 is equal to the excitation frequency of the engine 1, and the air cleaner 7 performs self-cleaning through the resonance, so that the air cleaner 7 can complete self-cleaning without shutdown, and the vibration source is the engine 1, and no additional vibration source is introduced, so that the vibration noise of the whole machine is not increased.
In embodiment 1 of the present invention, the active suspension may be any active suspension in any specific form in the prior art, and the semi-active suspension may be any semi-active suspension in any specific form in the prior art. By way of example, the active suspension is a decoupled electromagnetic hydraulic active suspension; or, a heatable rubber rod is used as a main spring of the semi-active suspension in the semi-active suspension.
As a specific implementation, in the present embodiment, the first suspension 6 has a first stiffness state and a second stiffness state; wherein the resonance frequency of the first mount with the air cleaner 7 in the first stiffness state is equal to the excitation frequency of the engine 1; in the second stiffness state, the resonance frequency of the first mount 6 and the air cleaner 7 is higher than the excitation frequency of the engine 1, for example, the resonance frequency of the first mount 6 and the air cleaner 7 is higher than the excitation frequency of the engine 1
And (4) doubling. As shown in fig. 1, the first suspension has a high stiffness stage and a low stiffness stage. On one hand, when the air filter 7 works normally, the first suspension is in a high-rigidity gear and serves as a shock absorber, so that the vibration transmitted to a cab by the engine 1 through the air filter 7, the engine hood 3 and the platform 8 can be attenuated, and the comfort is improved. On the other hand, when the air filter 7 needs to be cleaned, the first suspension 6 can be adjusted to be in a state of low rigidityThe natural frequency of the air filter 7 and the first suspension 6 is reduced, the natural frequency resonates with the engine 1, the amplitude of the air filter 7 is increased, the purpose of shaking off dust adsorbed on the surface of a filter element of the air filter 7 is achieved through self vibration, self cleaning of the air filter 7 is completed, and the service life is prolonged.
Specifically, the engine 1 is disposed on the cover body by a second mount. The second suspension can be an active suspension, a semi-active suspension or a passive suspension. In fig. 1, the hood body is referred to as an engine hood 3; the second mount is referred to as the engine mount 2 and the engine mount 9.
Specifically, the engine 1 and the air cleaner 7 communicate through the air connection pipe 4, whereby clean air can be supplied to the engine 1 through the air cleaner 7.
Specifically, the air cleaner self-cleaning system according to embodiment 1 of the present invention further includes an air filter pre-filter 6, and the air filter pre-filter 6 is in communication with the air cleaner 7.
Specifically, the air cleaner self-cleaning system in embodiment 1 of the present disclosure further includes an interaction device, and the interaction device is communicatively connected to the controller. The specific interaction device can be a display device, and related information in the self-cleaning process of the air filter can be displayed through the display device, so that a user can conveniently check the information.
Example 2
The embodiment 2 of the invention provides an air filter self-cleaning method, which is applied to an air filter self-cleaning system, wherein the air filter self-cleaning system comprises a cover body, an engine and an air filter, and the engine is arranged in the cover body and is connected with the cover body; the air filter is arranged on the cover body through a first suspension and is communicated with the engine, wherein the first suspension is an active suspension or a semi-active suspension. FIG. 2 is a schematic flow chart of a self-cleaning method for an air cleaner according to embodiment 2 of the present invention. As shown in fig. 2, the self-cleaning method of the air cleaner of embodiment 2 of the present invention includes the steps of:
s101: when the air filter needs cleaning, the excitation frequency of the engine is acquired.
As a specific embodiment, when an air cleaner cleaning instruction is received, it is determined that the air cleaner needs cleaning.
As a further embodiment, before obtaining the excitation frequency of the engine, the method further comprises: acquiring working condition information of the engine; judging whether the engine is in an idling working condition or not according to the working condition information; and when the engine is not in the idle working condition, adjusting the engine to enable the engine to be in the idle working condition. This is because when the engine is in an idle condition, the vibration of the engine is relatively large, and thus the air cleaner can be cleaned better.
As a further embodiment, before obtaining the excitation frequency of the engine, determining the excitation frequency of the engine is further included. As a specific embodiment, the following method can be adopted for determining the excitation frequency of the engine: acquiring the rotating speed (N, rpm) of the engine under an idle working condition; acquiring the number (M) of cylinders of the engine; and determining the excitation frequency of the engine by using the rotating speed of the engine under the idle working condition and the number of cylinders of the engine. As an example, the determined main excitation frequency f at idle of the engine is (N/60) × (M/2).
S102: adjusting the first mount using the excitation frequency such that a resonant frequency of the first mount with the air cleaner, by which the air cleaner self-cleans, is equal to an excitation frequency of the engine.
In embodiment 1 of the present invention, since the first suspension is an active suspension or a semi-active suspension, the resonant frequency of the first suspension with the air cleaner can be made equal to the excitation frequency of the engine by adjusting the first suspension.
For example, for the decoupling electromagnetic hydraulic active suspension, magnetic force can be generated by controlling the electrification of the electromagnetic coil to attract the decoupling membrane with the iron core, so that the second inertia channel is closed, liquid can only flow through the first inertia channel, and the large damping rigidity is at a large rigidity level; when the electromagnetic ring is powered off, the electromagnetic attraction disappears, the two inertia channels are opened simultaneously, the damping is small, the rigidity is small, the two inertia channels are at a small rigidity gear, and the suspension completes rigidity conversion.
For the heatable rubber rod semi-active suspension, the rubber can be increased along with the temperature and the hardness is increased by heating, so that the rigidity is increased at a high rigidity level; when the heating is stopped for a period of time, the temperature is reduced, the rubber hardness is reduced, and the rigidity is reduced to be at a low rigidity level; the purpose of adjusting the rigidity is achieved.
The natural frequency of the air cleaner and suspension system is determined by stiffness and mass;
the mass is constant, and the natural frequency f of the air filter and suspension system can be changed by adjusting the rigidity K of the suspension; during resonance, the natural frequency is equal to the main excitation frequency of the engine, f is determined, M is determined as the mass of the air filter and suspension system, and the rigidity K can be obtained.
As a further embodiment, after the air cleaner self-cleans through the resonance, the method further includes: acquiring the self-cleaning duration of the air filter; judging whether the duration reaches a preset threshold value; when the length of time reaches the threshold, adjusting the first suspension such that a resonant frequency of the first suspension with the air filter is greater than an excitation frequency of the engine; therefore, the first suspension can be in the second rigidity state, vibration noise transmitted to the cab by the air filter is reduced, and the comfort of the cab is improved.
According to the self-cleaning method of the air filter provided by the embodiment 2 of the invention, when the air filter needs to be cleaned, the excitation frequency of the engine is obtained; adjusting the first suspension to make the resonant frequency of the first suspension and the air filter equal to the excitation frequency of the engine by using the excitation frequency, so that the air filter can be self-cleaned by the resonance, and the service life of the air filter is prolonged; and the vibration noise transmitted to the cab by the air filter is reduced, and the comfort of the cab is improved.
It should be noted that, according to the self-cleaning method for the air cleaner provided by embodiment 2 of the present invention, the air cleaner-the first suspension system resonates only when self-cleaning is required, and the resonant time is controllable, because vibration has a destructive effect on the air cleaner, the service life of the air cleaner can be effectively prolonged, and obvious economic benefits are brought.
To more clearly illustrate the self-cleaning method of the air cleaner of embodiment 2 of the present invention, a specific example is given. The air cleaner self-cleaning system described with reference to fig. 1 specifically includes the following steps:
(1) when the air filter is required to be automatically cleaned, a self-cleaning program is started on the display screen, the controller receives an instruction, the engine is automatically adjusted to be in an idling working condition, after the rotating speed of the idling working condition is stable, the controller sends a signal to the controller, the controller adjusts the suspension of the air filter to be in a rigidity small gear position, and the signal is fed back to the controller. At the moment, the resonance frequency of the air filter-first suspension is equal to the main excitation frequency of the engine, the air filter and the engine resonate, the amplitude is increased sharply, and the aim of shaking off dust adsorbed on the surface of the filter element is achieved through self vibration.
(2) And (4) the controller receives a feedback signal of the controller for 10s, sends a signal to instruct the controller to adjust to the gear position with high rigidity, transmits a signal to the display screen, and displays that the self-cleaning program is finished, at the moment, the resonance frequency of the air filter-first suspension is far higher than the excitation frequency of the engine, so that a user can normally operate the machine, and the first suspension plays a role in damping and reducing noise.
Example 3
Corresponding to embodiment 2 of the present invention, embodiment 3 of the present invention provides an air cleaner self-cleaning device, which is applied to an air cleaner self-cleaning system, where the air cleaner self-cleaning system includes a cover body, an engine and an air cleaner, and the engine is disposed in the cover body and connected to the cover body; the air filter is arranged on the cover body through a first suspension and is communicated with the engine, wherein the first suspension is an active suspension or a semi-active suspension. FIG. 3 is a schematic structural view of a self-cleaning device of an air cleaner according to embodiment 3 of the present invention. As shown in fig. 3, the air cleaner self-cleaning apparatus according to embodiment 3 of the present invention includes an acquisition module 20 and a conditioning module 22.
Specifically, the obtaining module 20 is configured to obtain an excitation frequency of the engine when the air cleaner needs to be cleaned;
a tuning module 22 for tuning the first suspension using the excitation frequency such that a resonant frequency of the first suspension with the air filter, by which the air filter self-cleans, is equal to the excitation frequency of the engine.
The details of the self-cleaning device for air cleaner can be understood by referring to the corresponding descriptions and effects of the embodiment shown in fig. 1 to 2, and the description thereof is omitted.
Example 4
Embodiments of the present disclosure also provide an air cleaner self-cleaning system that may include a processor and a memory, where the processor and the memory may be connected by a bus or otherwise.
The processor may be a Central Processing Unit (CPU). The Processor may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, or a combination thereof.
The memory, which is a non-transitory computer-readable storage medium, may be used to store non-transitory software programs, non-transitory computer-executable programs, and modules, such as program instructions/modules (e.g., the acquisition module 20 and the conditioning module 22 shown in fig. 3) corresponding to the air filter self-cleaning method in embodiments of the present invention. The processor executes various functional applications and data processing of the processor by executing non-transitory software programs, instructions and modules stored in the memory, namely, the air filter self-cleaning system method in the above method embodiment is realized.
The memory may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created by the processor, and the like. Further, the memory may include high speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory optionally includes memory located remotely from the processor, and such remote memory may be coupled to the processor via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The one or more modules are stored in the memory and, when executed by the processor, perform the air cleaner self-cleaning system method of the embodiment shown in FIGS. 1-2.
The details of the self-cleaning system of the air cleaner can be understood by referring to the corresponding descriptions and effects of the embodiments shown in fig. 1 to 3, and the description thereof is omitted.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a Flash Memory (Flash Memory), a Hard Disk (Hard Disk Drive, abbreviated as HDD) or a Solid State Drive (SSD), etc.; the storage medium may also comprise a combination of memories of the kind described above.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (11)
1. An air cleaner self-cleaning system, comprising:
a cover body;
an engine (1), the engine (1) being arranged in the hood and connected to the hood;
an air filter (7), wherein the air filter (7) is arranged on the cover body through a first suspension (6) and is communicated with the engine (1), and the first suspension (6) is an active suspension or a semi-active suspension;
a controller communicatively connected with the engine (1) and the first mount (6).
2. The air cleaner self-cleaning system of claim 1, wherein the first suspension (6) has a first stiffness state and a second stiffness state; wherein the resonance frequency of the first suspension (6) with the air filter (7) in the first stiffness state is equal to the excitation frequency of the engine (1); in the second stiffness state, the resonant frequency of the first suspension (6) and the air filter (7) is greater than the excitation frequency of the engine (1).
3. The air cleaner self-cleaning system of claim 1, wherein the active suspension is a decoupled electromagnetic hydraulic active suspension; or, a heatable rubber rod is used as a main spring of the semi-active suspension in the semi-active suspension.
4. The air cleaner self-cleaning system according to claim 1, wherein the engine (1) is arranged on the hood by a second suspension.
5. The air cleaner self-cleaning system of claim 1, further comprising an interface device communicatively coupled to the controller.
6. An air filter self-cleaning method is applied to an air filter self-cleaning system, the air filter self-cleaning system comprises a cover body, an engine and an air filter, wherein the engine is arranged in the cover body and is connected with the cover body; the air filter is arranged on the cover body through a first suspension and is communicated with the engine, wherein the first suspension is an active suspension or a semi-active suspension, and the self-cleaning method of the air filter is characterized by comprising the following steps:
acquiring an excitation frequency of the engine when the air filter needs cleaning;
adjusting the first mount using the excitation frequency such that a resonant frequency of the first mount with the air cleaner, by which the air cleaner self-cleans, is equal to an excitation frequency of the engine.
7. The air cleaner self-cleaning method of claim 6, further comprising, prior to obtaining the excitation frequency of the engine:
acquiring working condition information of the engine;
judging whether the engine is in an idling working condition or not according to the working condition information;
and when the engine is not in the idle working condition, adjusting the engine to enable the engine to be in the idle working condition.
8. The air cleaner self-cleaning method of claim 7, further comprising, prior to obtaining the excitation frequency of the engine, determining the excitation frequency of the engine using:
acquiring the rotating speed of the engine under an idling working condition;
acquiring the number of cylinders of the engine;
and determining the excitation frequency of the engine by using the rotating speed of the engine under the idle working condition and the number of cylinders of the engine.
9. The air cleaner self-cleaning method of claim 6, further comprising, after the air cleaner self-cleans by resonance:
acquiring the self-cleaning duration of the air filter;
judging whether the duration reaches a preset threshold value;
when the period of time reaches the threshold, adjusting the first suspension such that a resonant frequency of the first suspension with the air filter is greater than an excitation frequency of the engine.
10. An air filter self-cleaning device is applied to an air filter self-cleaning system, the air filter self-cleaning system comprises a cover body, an engine and an air filter, wherein the engine is arranged in the cover body and is connected with the cover body; the air cleaner is arranged on the cover body through a first suspension and is communicated with the engine, wherein the first suspension is an active suspension or a semi-active suspension, and the air cleaner self-cleaning device is characterized by comprising:
an acquisition module for acquiring an excitation frequency of the engine when the air cleaner needs cleaning;
an adjustment module to adjust the first suspension using the excitation frequency such that a resonant frequency of the first suspension with the air cleaner is equal to an excitation frequency of the engine, the air cleaner self-cleaning by the resonance.
11. A computer-readable storage medium storing computer instructions for causing a computer to perform the air cleaner self-cleaning method of any one of claims 6-9.
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| CN113551360A (en) * | 2021-07-07 | 2021-10-26 | 珠海格力电器股份有限公司 | Self-cleaning control method and device, medium and equipment for air conditioner filter screen |
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| CN210509438U (en) * | 2019-06-26 | 2020-05-12 | 上海电气鼓风机厂有限公司 | Vibration type self-cleaning air filter |
| CN110354593A (en) * | 2019-06-27 | 2019-10-22 | 三一重机有限公司 | A kind of automatically cleaning dust-extraction unit and vehicle |
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| CN113551360B (en) * | 2021-07-07 | 2022-09-27 | 珠海格力电器股份有限公司 | Self-cleaning control method and device, medium and equipment for air conditioner filter screen |
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