CN116474940A - A filter adjustment method, device, electrostatic purification device and storage medium - Google Patents

Abstract

The invention discloses a filter screen adjusting method, a filter screen adjusting device, an electrostatic purifying device and a storage medium. The method comprises the following steps: collecting the oil smoke concentration of the air outlet end of the electrostatic purifying device in real time; when the oil smoke concentration at the air outlet end of the electrostatic purifying device exceeds the standard oil smoke concentration range, gradually controlling the filter screen to adjust the aperture ratio at preset time intervals according to each adjusting amount as a preset adjusting amount until the oil smoke concentration at the air outlet end of the electrostatic purifying device is within the standard oil smoke concentration range. By utilizing the scheme, the electrostatic purifying device can automatically adjust the aperture ratio of the filter screen according to the oil smoke concentration condition, flexibly adjust the resistance and the purifying efficiency of the purifier of the electrostatic purifying device, improve the purifying efficiency and the purifying effect of the electrostatic purifying device, ensure that the discharged oil smoke concentration meets the discharge standard, effectively reduce the resistance of the oil smoke purifying system, reduce the load of a fan, ensure the better smoke discharging effect of the oil smoke purifying system and avoid the occurrence of smoke returning and odor mixing.

Description

A filter adjustment method, device, electrostatic purification device and storage medium

technical field

The embodiments of the present invention relate to the technical field of kitchen appliances, in particular to a filter adjustment method and device, an electrostatic purification device and a storage medium.

Background technique

As the importance of environmental protection is getting higher and higher, whether it is a household kitchen, a large hotel, or a unit canteen, etc., there is generally installed a smoke exhaust purification equipment system to filter and purify the oily fume from the public flue before discharging it. In this case, it is usually necessary to equip the main fan on the roof with a large exhaust fan and a complete oil fume purification system. Among them, the oil fume purification system is equipped with electrostatic purification devices, ion purifiers, odor purifiers and other equipment systems. The electrostatic purification device is used to purify the oil fume particles.

The air inlet end of the electrostatic purification device is generally equipped with a layer of mesh mechanical filter structure, and the mechanical filter structure is used for primary filtration of large particles of oil fume and particulate matter. Among the mesh mechanical filter structures, the orifice mesh has relatively high efficiency and has become the most commonly used filter structure. The opening size of the holes in the orifice net directly affects the resistance and purification efficiency of the purifier. However, once the existing orifice net is selected, it cannot be replaced at any time, which is inconvenient to flexibly adjust the resistance and purification efficiency of the purifier according to the working conditions. If the opening is too large, the purification efficiency will be reduced and the fume emission will be unqualified; if the opening is too small, the resistance of the system will be increased, and the load on the fan will be increased, resulting in poor smoke exhaust effect and the occurrence of smoke and odor problems.

Contents of the invention

Embodiments of the present invention provide a filter adjustment method and device, an electrostatic purification device and a storage medium, so as to adjust the filter according to the oil fumes and realize flexible adjustment of the purifier resistance and purification efficiency of the electrostatic purification device.

In the first aspect, an embodiment of the present invention provides a filter adjustment method, which is applied to an electrostatic purification device, and the filter adjustment method includes:

Real-time collection of oil fume concentration at the air outlet of the electrostatic purification device;

When the oil fume concentration at the air outlet of the electrostatic purification device exceeds the standard oil fume concentration range, every preset time interval, according to each adjustment amount as the preset adjustment amount, gradually control the filter to adjust the opening ratio until the oil fume concentration at the air outlet of the electrostatic purification device is within the standard oil fume concentration range.

Optionally, when the oil fume concentration at the air outlet of the electrostatic purification device exceeds the standard oil fume concentration range, at preset time intervals, each adjustment amount is the preset adjustment amount, and the filter screen is gradually controlled to adjust the opening ratio until the oil fume concentration at the air outlet of the electrostatic purification device is within the standard oil fume concentration range, including:

When C≥C1, every preset time interval, according to each adjustment amount as the preset adjustment amount, gradually control the filter screen to reduce the opening rate until C<C1;

When C<C2, every preset time interval, according to each adjustment amount as the preset adjustment amount, gradually control the filter to increase the opening rate until C≥C2;

Wherein, C is the soot concentration at the air outlet of the electrostatic purification device, C1 is the upper limit of the soot concentration in the standard soot concentration range, and C2 is the lower limit of the soot concentration in the standard soot concentration range.

Optionally, the electrostatic purification device includes a housing, a filter mechanism and a drive mechanism, the filter mechanism includes two filter screens, the two filter screens are arranged on the housing and arranged along the flow direction of the fluid; the drive mechanism is mechanically connected to the filter screen;

When the oil fume concentration at the air outlet of the electrostatic purification device exceeds the standard oil fume concentration range, every preset time interval, according to each adjustment amount as the preset adjustment amount, gradually control the filter to adjust the opening ratio until the oil fume concentration at the air outlet of the electrostatic purification device is within the standard oil fume concentration range, including:

When the oil fume concentration at the air outlet of the electrostatic purification device exceeds the standard oil fume concentration range, at preset time intervals, according to a fixed driving rate, with each adjustment time as the preset adjustment time, the driving mechanism is gradually controlled to adjust the relative positions of the openings on the two filter screens until the oil fume concentration at the air outlet of the electrostatic purification device is within the standard oil fume concentration range.

Optionally, also include:

Collecting the electrostatic purification device usage characteristic parameters of the electrostatic purification device within a preset period, and using the electrostatic purification device usage characteristic parameters to draw an electrostatic purification device usage characteristic curve;

Comparing the usage characteristic curve of the electrostatic purification device with a plurality of preset electrostatic purification device usage characteristic curves in the electrostatic purification device usage characteristic curve database, and determining the closest preset electrostatic purification device usage characteristic curve;

Find the optimal time interval and optimal adjustment amount corresponding to the closest preset electrostatic purification device usage characteristic curve;

When the oil fume concentration at the air outlet of the electrostatic purification device exceeds the standard oil fume concentration range, every preset time interval, according to each adjustment amount as the preset adjustment amount, gradually control the filter to adjust the opening ratio until the oil fume concentration at the air outlet of the electrostatic purification device is within the standard oil fume concentration range, including:

When the oil fume concentration at the air outlet of the electrostatic purification device exceeds the standard oil fume concentration range, at each optimal time interval, the filter screen is gradually controlled to adjust the opening ratio according to the optimal adjustment amount each time, until the oil fume concentration at the air outlet of the electrostatic purification device is within the standard oil fume concentration range.

Optionally, the electrostatic purification device includes a housing, a filter mechanism and a drive mechanism, the filter mechanism includes two filter screens, the two filter screens are arranged on the housing and arranged along the flow direction of the fluid; the drive mechanism is mechanically connected to the filter screen;

The characteristic parameters of the usage of the electrostatic purification device include at least one of the operating parameters of the fan of the electrostatic purification device, the operating parameters of the driving mechanism, the air volume parameters of the electrostatic purification device, and the purification efficiency.

Collecting the electrostatic purification device usage characterization parameters of the electrostatic purification device within a preset period, and using the electrostatic purification device usage characterization parameters to draw an electrostatic purification device usage characterization curve, including:

Collect the operating parameters of the fan of the electrostatic purification device within the preset period, and use the operating parameters of the fan of the electrostatic purification device to draw the operating curve of the fan of the electrostatic purification device;

And/or, collect the operating parameters of the driving mechanism within a preset period, and use the operating parameters of the driving mechanism to draw the operating curve of the driving mechanism;

And/or, collect the air volume of the electrostatic purification device within the preset period, and draw the air volume curve of the electrostatic purification device according to the air volume of the electrostatic purification device;

And/or, collect the oil fume concentration at the air inlet end and the air outlet end of the electrostatic purification device within a preset period;

According to the purification efficiency formula Calculate the purification efficiency A; among them, _before C is the oil fume concentration at the air inlet end of the electrostatic purification device, and _after C is the oil fume concentration at the air outlet end of the electrostatic purification device;

Use the purification efficiency to draw the purification efficiency curve.

Optionally, also include:

Collecting the oil fume concentration at the air inlet end of the electrostatic purification device in real time;

According to the purification efficiency formula Calculate the purification efficiency A; among them, _before C is the oil fume concentration at the air inlet end of the electrostatic purification device, and _after C is the oil fume concentration at the air outlet end of the electrostatic purification device;

Real-time collection of air volume of electrostatic purification device;

Within the preset air volume range of the electrostatic purification device, when the purification efficiency is less than the first purification efficiency lower limit value, a filter screen maintenance reminder is given; wherein, the first purification efficiency lower limit value is the standard purification efficiency lower limit value under the preset electrostatic purification device air volume range.

Optionally, also include:

Collecting the oil fume concentration at the air inlet end of the electrostatic purification device in real time;

According to the purification efficiency formula Calculate the purification efficiency A; among them, _before C is the oil fume concentration at the air inlet end of the electrostatic purification device, and _after C is the oil fume concentration at the air outlet end of the electrostatic purification device;

Real-time collection of wind pressure at the air inlet and outlet of the electrostatic purification device;

The difference between the wind pressure at the air outlet of the electrostatic purification device and the wind pressure at the air inlet exceeds the maximum pressure difference value during the adjustment process of the opening ratio of the filter screen, and when the purification efficiency is less than the second purification efficiency lower limit value, a filter screen maintenance reminder is given; wherein, the second purification efficiency lower limit value is the standard purification efficiency at the maximum pressure difference during the adjustment process of the filter screen opening ratio.

In the second aspect, the embodiment of the present invention also provides a filter adjustment device, which is applied to an electrostatic purification device, and the filter adjustment device includes:

The oil fume collection module is used to collect the oil fume concentration at the air outlet end of the electrostatic purification device in real time;

The control module is used to gradually control the filter screen to adjust the opening ratio at each preset time interval when the oil fume concentration at the air outlet of the electrostatic purification device exceeds the standard range of oil fume concentration, until the oil fume concentration at the air outlet of the electrostatic purification device is within the standard oil fume concentration range.

In the third aspect, the embodiment of the present invention also provides an electrostatic purification device, including:

one or more processors;

storage means for storing one or more programs;

When the one or more programs are executed by the one or more processors, the one or more processors are made to implement the filter adjustment method according to any one of the first aspect.

In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the filter adjustment method as described in any one of the first aspect is implemented.

The embodiments of the present invention provide a filter adjustment method, device, electrostatic purification device and storage medium, wherein firstly, the oil fume concentration at the air outlet end of the electrostatic purification device is collected in real time; then, when the oil fume concentration at the air outlet end of the electrostatic purification device exceeds the standard oil fume concentration range, at each preset time interval, the opening ratio of the filter is gradually controlled according to each adjustment amount as the preset adjustment amount, until the oil fume concentration at the air outlet end of the electrostatic purification device is within the standard oil fume concentration range. Using the above scheme, the electrostatic purification device can automatically adjust the opening ratio of the filter according to the concentration of oil fume, flexibly adjust the resistance and purification efficiency of the electrostatic purification device, improve the purification efficiency and purification effect of the electrostatic purification device, and make the exhausted oil fume concentration meet the emission standards.

Description of drawings

Fig. 1 is a schematic flow chart of a filter adjustment method provided by Embodiment 1 of the present invention;

Fig. 2 is a schematic structural view of the oil fume purification system provided by Embodiment 1 of the present invention;

Fig. 3 is a partial structural schematic diagram of the oil fume purification system provided by Embodiment 1 of the present invention;

Fig. 4 is a first schematic structural view of the electrostatic purification device provided in Embodiment 1 of the present invention in the first state;

Fig. 5 is a second schematic structural view of the electrostatic purification device in the first state provided by Embodiment 1 of the present invention;

Fig. 6 is a first schematic structural view of the electrostatic purification device in the second state provided by Embodiment 1 of the present invention;

Fig. 7 is a second schematic structural view of the electrostatic purification device provided in Embodiment 1 of the present invention in a second state;

Fig. 8 is a partial enlarged view of place C in Fig. 4;

Fig. 9 is a partial enlarged view at D in Fig. 6;

Fig. 10 is a cross-sectional view at A-A place in Fig. 4;

Fig. 11 is the sectional view of B-B place among Fig. 6;

Fig. 12 is a schematic flow chart of a filter adjustment method provided by Embodiment 2 of the present invention;

Fig. 13 is a schematic flow chart of a filter adjustment method provided by Embodiment 3 of the present invention;

Fig. 14 is a schematic diagram of a filter adjustment control strategy of an electrostatic purification device provided in Embodiment 4 of the present invention;

Fig. 15 is a schematic structural diagram of a filter adjusting device provided in Embodiment 5 of the present invention;

Fig. 16 is a schematic structural diagram of an electrostatic purification device provided in Embodiment 6 of the present invention.

In the picture:

1000. Fume purification system;

100. Electrostatic purification device; 200. Purification passage entrance; 300. Purification ventilation duct; 400. Fan control mechanism;

10. Shell; 11. Guide groove;

20. Filter mechanism; 21. First filter screen; 211. First filter hole; 22. Second filter screen; 221. Filter screen body; 2211. Second filter hole; 222. Contact part;

30. Driving mechanism; 31. Driving motor; 311. Body; 312. Rotary shaft; 32. Reversing mechanism; 321. Cam; 322. Reset member; 323. Gear; 324. Rack;

40. Oil fume detection mechanism;

151. Oil fume collection module; 152. Control module;

161. Processor; 162. Storage device; 163. Input device; 164. Output device.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe various operations (or steps) as sequential processing, many of the operations may be performed in parallel, concurrently, or simultaneously. In addition, the order of operations can be rearranged. The process may be terminated when its operations are complete, but may also have additional steps not included in the figure. The processing may correspond to a method, function, procedure, subroutine, subroutine, or the like. In addition, the embodiments and the features in the embodiments of the present invention can be combined with each other under the condition of no conflict.

The term "comprising" and its variants used in the present invention are open to include, ie "including but not limited to". The term "based on" is "based at least in part on". The term "one embodiment" means "at least one embodiment."

It should be noted that concepts such as "first" and "second" mentioned in the present invention are only used to distinguish corresponding contents, and are not used to limit the sequence or interdependence relationship.

It should be noted that the modifications of "one" and "multiple" mentioned in the present invention are illustrative and not restrictive, and those skilled in the art should understand that unless the context clearly indicates otherwise, it should be understood as "one or more".

Embodiment one

Figure 1 is a schematic flow chart of a filter adjustment method provided in Embodiment 1 of the present invention. This method is applicable to the situation where an electrostatic purification device purifies oil fume. The method can be performed by a filter adjustment device, wherein the device can be implemented by software and/or hardware, and is generally integrated on an electrostatic purification device. In this embodiment, the electrostatic purification device includes but is not limited to: oil fume purifiers and other equipment.

As shown in Figure 1, a filter adjustment method provided by Embodiment 1 of the present invention includes the following steps:

S110. Collect the oil fume concentration at the air outlet of the electrostatic purification device in real time.

2 is a schematic structural view of the oil fume purification system provided by Embodiment 1 of the present invention, and FIG. 3 is a partial structural diagram of the oil fume purification system provided by Embodiment 1 of the present invention; referring to FIGS. After the electrostatic purification device 100 flows into the purification ventilation duct 300 and the fan control mechanism 400, it is discharged outside. Wherein, the electrostatic purification device 100 is used to purify the soot particles. The air inlet end of the electrostatic purification device 100 is generally provided with a layer of mesh mechanical filter structure, and the mechanical filter structure performs primary-effect filtration of large particles of oil fume and particulate matter. Among the mesh mechanical filter structures, the orifice mesh has relatively high efficiency and has become the most commonly used filter structure. The opening size of the holes in the orifice net directly affects the resistance and purification efficiency of the purifier.

It can be understood that after the oil fume is filtered and purified by the electrostatic purification device 100, the concentration of oil fume at the air inlet and air outlet will change, and the concentration of oil fume at the air outlet will decrease. In this embodiment, the oil fume detection mechanism 40, that is, an online monitor, can be installed at both the air inlet and outlet ends of the electrostatic purification device. This step is obtained by using the oil fume detection mechanism 40, that is, an online monitor installed at the rear end of the electrostatic purification device.

S120. When the oil fume concentration at the air outlet of the electrostatic purification device exceeds the standard oil fume concentration range, gradually control the filter screen to adjust the opening ratio at each preset time interval according to each adjustment amount as the preset adjustment amount until the oil fume concentration at the air outlet of the electrostatic purification device is within the standard oil fume concentration range.

The standard oil fume concentration range is the oil fume concentration range that meets the emission standard. It is the oil fume concentration range preset according to the emission standard. This step is the process of automatically adjusting the opening ratio of the filter when the actual oil fume concentration does not meet the emission standard, so that the oil fume emission meets the emission standard. Among them, the opening area of the filter screen is the oil fume discharge path that directly passes through without being filtered and purified by the filter screen, while the non-opening area in the filter screen is the area where filtering and purification are realized. It can be understood that the process of adjusting the opening ratio of the filter screen here is essentially a process of changing the purification efficiency and purification resistance of the filter screen. The purification resistance represents the load of the fan in the electrostatic purification device. The opening ratio is negatively correlated with the purification efficiency and purification resistance of the filter, that is, the larger the opening ratio, the lower the purification efficiency of the filter, the smaller the purification resistance, and the smaller the fan load; the smaller the opening ratio, the higher the purification efficiency of the filter, the greater the purification resistance, and the greater the fan load. The overall control logic of this step is roughly as follows: when the oil fume concentration at the air outlet is too high, the purification efficiency is improved by reducing the opening ratio, thereby reducing the exhausted oil fume concentration; on the contrary, when the oil fume concentration at the air outlet is too low, the purification resistance is reduced by increasing the opening ratio, thereby reducing the fan load.

Specifically, in the process of automatic adjustment, the automatic adjustment is first performed every preset time interval, and here, the preset time interval between each automatic adjustment can provide sufficient collection time for oil fume collection. It can be understood that after each automatic adjustment of the filter screen, it takes a certain amount of time for the oil fume to be filtered and purified stably by the electrostatic purification device with the adjusted opening ratio, that is, it takes a certain amount of time to maintain a stable oil fume concentration at the air outlet, and there is a certain lag in the accurate collection of the oil fume concentration at the air outlet after the opening ratio is adjusted. In this step, the next adjustment of the opening ratio is performed at an interval of a preset time after the last adjustment of the opening ratio, which can ensure that the concentration of oil fume collected during the next adjustment of the opening ratio is more accurate, and the judgment process is also more accurate. Secondly, in the step of automatic adjustment, each adjustment is performed according to the preset adjustment amount, and the adjustment accuracy and adjustment efficiency can be considered according to the adaptive setting of the preset adjustment amount. It can be understood that when a relatively small preset adjustment amount is set, a relatively small change will occur in each opening ratio adjustment, thereby achieving more fine adjustment; conversely, when a relatively large preset adjustment amount is set, a relatively large change will occur in each opening ratio adjustment, which can make the oil fume reach the standard oil fume range more quickly, thereby improving the adjustment efficiency. Of course, the preset adjustment amount here can be set according to the experimental situation or the actual situation, and there is no limitation here. From the above adjustment process, it can be seen that in this embodiment, when the oil fume exceeds the emission standard, the automatic adjustment of the opening ratio can be performed more accurately, effectively and quickly while taking into account the purification efficiency and system load, so as to make the oil fume concentration meet the emission standard.

The embodiment of the present invention provides a schematic structural diagram of a specific electrostatic purification device, and the adjustment process of this step will be described below with a specific structure. 4 is a structural schematic diagram of the electrostatic purification device provided by Embodiment 1 of the present invention in the first state. FIG. 5 is a structural schematic diagram of the electrostatic purification device provided by Embodiment 1 of the present invention in the first state. Sectional view, Fig. 11 is the sectional view of B-B place among Fig. 6, with reference to Fig. 4-Fig. More specifically, the driving mechanism 30 may include a driving motor 31 and a reversing mechanism 32. The driving motor 31 includes a body 311 and a rotating shaft 312. The rotating shaft 312 is arranged on the body 311 and extends along the second direction. The fluid flow direction, the first direction, and the second direction are perpendicular to each other.

Specifically, as shown in FIGS. 8 and 9 , the first filter screen 21 is provided with a plurality of first filter holes 211, and the second filter screen 22 is provided with a plurality of second filter holes 2211. The arrangement of the plurality of first filter holes 211 and the plurality of second filter holes 2211 is the same, and each first filter hole 211 corresponds to a second filter hole 2211 and has the same size and shape. As shown in FIG. 8 , when the first filter screen 21 and the second filter screen 22 are in the first state, the first filter hole 211 and the corresponding second filter hole 2211 completely overlap. At this time, the filter mechanism 20 is in a state of high porosity, which can realize a large displacement of filtered gas. As shown in FIG. 9 , when the first filter screen 21 and the second filter screen 22 are in the second state, the first filter hole 211 partially overlaps with the corresponding second filter hole 2211 , and at this time, the filter mechanism 20 is in a state of low opening ratio, which can achieve a better filtering effect on oil fume.

In addition, it should be noted that the specific structure and connection relationship of the electrostatic purification device are shown in Figure 4-Figure 11 , and those skilled in the art can refer to the structure shown in Figure 4-Figure 11 to understand its detailed internal structure and working principle, which will not be repeated here.

Based on the above structure of the electrostatic purification device, the above step S120 may specifically include:

When the oil fume concentration at the air outlet of the electrostatic purification device exceeds the standard oil fume concentration range, at preset time intervals, according to a fixed driving rate, with each adjustment time as the preset adjustment time, the driving mechanism is gradually controlled to adjust the relative positions of the openings on the two filter screens until the oil fume concentration at the air outlet of the electrostatic purification device is within the standard oil fume concentration range.

As mentioned above, the relative positions of the first filter screen 21 and the second filter screen 22 are different, and the relative positions of the first filter holes 211 and the second filter holes 2211 are different, so the overall opening ratio of the filter mechanism 20 will change. In this step, the driving mechanism is gradually controlled to adjust the relative positions of the openings on the two filter screens. Specifically, the body 311 of the drive motor 31 provides a driving force for rotation to the rotating shaft 312, and the reversing mechanism 32 converts the rotation of the rotating shaft 312 into the movement of the second filter screen 22 along the first direction, thereby moving the second filter screen 22, changing the relative position of the second filter screen 22 and the first filter screen 21, and changing the overlapping degree of the first filter hole 211 and the second filter hole 2211 on the two filter screens to adjust the opening ratio.

In addition, the adjustment amount of the opening ratio in this step is essentially controlled by the moving time of the second filter screen 22 . According to the fixed driving rate, each adjustment time is used as the preset adjustment time. The essence is that the moving speed of the second filter screen 22 remains unchanged during each movement, and the second filter screen 22 is controlled to move for the preset adjustment time during each adjustment, so that the second filter screen 22 can move the same distance each time and achieve a fixed adjustment amount of opening ratio.

In the filter adjustment method provided by Embodiment 1 of the present invention, firstly, the oil fume concentration at the air outlet end of the electrostatic purification device is collected in real time; then, when the oil fume concentration at the air outlet end of the electrostatic purification device exceeds the standard oil fume concentration range, at preset time intervals, the adjustment amount is the preset adjustment amount, and the opening ratio of the filter is gradually controlled until the oil fume concentration at the air outlet end of the electrostatic purification device is within the standard oil fume concentration range. Using the above method, the electrostatic purification device can automatically adjust the opening ratio of the filter according to the concentration of oil fume, flexibly adjust the resistance and purification efficiency of the electrostatic purification device, improve the purification efficiency and purification effect of the electrostatic purification device, and make the exhausted oil fume concentration meet the emission standards.

On the basis of the above-mentioned embodiments, modified embodiments of the above-mentioned embodiments are proposed. It should be noted here that, for the sake of brevity, only differences from the above-mentioned embodiments are described in the modified embodiments.

In one embodiment, the above step S120 may specifically include:

When C≥C1, every preset time interval, according to each adjustment amount as the preset adjustment amount, gradually control the filter screen to reduce the opening rate until C<C1;

When C<C2, every preset time interval, according to each adjustment amount as the preset adjustment amount, gradually control the filter to increase the opening rate until C≥C2;

Among them, C is the oil fume concentration at the air outlet of the electrostatic purification device, C1 is the upper limit of the oil fume concentration in the standard oil fume concentration range, and C2 is the lower limit of the oil fume concentration in the standard oil fume concentration range.

As mentioned above, the range of the standard oil fume concentration is preset according to the oil fume emission standard. There are the upper limit C1 of the oil fume concentration and the lower limit C2 of the oil fume concentration. Compared with these two thresholds of the oil fume concentration, it can be judged whether the current concentration of oil fume at the air outlet meets the standard oil fume concentration, and the specific situation of the oil fume concentration not meeting the standard oil fume concentration, such as the concentration is too high or the concentration is too low. When the oil fume concentration at the air outlet is too high, the purification efficiency can be improved by reducing the opening ratio, so as to reduce the exhausted oil fume concentration; on the contrary, when the oil fume concentration at the air outlet is too low, the purification resistance can be reduced by increasing the opening ratio, so as to reduce the fan load.

Embodiment two

FIG. 12 is a schematic flowchart of a filter adjustment method provided by Embodiment 2 of the present invention. Embodiment 2 is optimized on the basis of the above-mentioned embodiments. In this embodiment, the following steps are added:

Collecting the characteristic parameters of the usage of the electrostatic purification device within the preset period, and using the characteristic parameters of the usage of the electrostatic purification device to draw a characteristic curve of the usage of the electrostatic purification device;

comparing the usage characteristic curve of the electrostatic purification device with a plurality of preset electrostatic purification device usage characteristic curves in the electrostatic purification device usage characteristic curve database, and determining the closest preset electrostatic purification device usage characteristic curve;

Find the optimal time interval and optimal adjustment amount corresponding to the closest preset electrostatic purification device usage characteristic curve;

On this basis, when the oil fume concentration at the air outlet of the electrostatic purification device exceeds the standard oil fume concentration range, every preset time interval, according to each adjustment amount as the preset adjustment amount, the filter screen is gradually controlled to adjust the opening ratio until the oil fume concentration at the air outlet of the electrostatic purification device is within the standard oil fume concentration range, which is further optimized as follows:

When the oil fume concentration at the air outlet of the electrostatic purification device exceeds the standard range of oil fume concentration, every optimal time interval, according to each adjustment amount as the optimal adjustment amount, gradually control the filter screen to adjust the opening ratio until the oil fume concentration at the air outlet of the electrostatic purification device is within the standard oil fume concentration range.

Please refer to Embodiment 1 for the content that is not exhaustive in this embodiment.

As shown in Figure 12, a filter adjustment method provided by Embodiment 2 of the present invention includes the following steps:

S210. Collect the characteristic parameters of the usage of the electrostatic purification device within a preset period, and use the characteristic parameters of the usage of the electrostatic purification device to draw a characteristic curve of the usage of the electrostatic purification device.

Among them, the preset period can be one week, one month, one quarter, etc., and there is no limitation here. The characteristic parameters of the use of the electrostatic purification device can be used to characterize the parameters of the use of the electrostatic purification device within a certain period. In this step, the characteristic parameters of the use of the electrostatic purification device within the preset period are drawn into a characteristic curve of the use of the electrostatic purification device. The purpose is to use the curve to express the usage habits of the electrostatic purification device within a certain period, and to show the degree of oil fume and the probability of high-concentration oil fume in the application scene where the current electrostatic purification device is located. For example, in application scenarios such as barbecue restaurants and hot pot restaurants, the degree of oil fume is relatively serious, and the change of oil fume over time is mostly concentrated at regular meal times, and the time for high-concentration oil fume is relatively long. In application scenarios such as cake shops and kindergarten kitchens, the degree of oil fume is relatively light, and generally there is no high-concentration oil fume. It can also be seen from this that the application scenarios of different business formats, the degree of soot and the probability of high-concentration soot are all unique to the current business, and the actual use of electrostatic purification devices will match the degree of soot and the probability of high-concentration of the current business.

Specifically, continuing to take the electrostatic purification device shown in Figures 4-11 as an example, the characteristic parameters and characteristic curves of the use of the electrostatic purification device are introduced. Optionally, the usage characteristic parameters of the electrostatic purification device include at least one of the operating parameters of the fan of the electrostatic purification device, the operating parameters of the driving mechanism, the air volume parameters of the electrostatic purification device, and the purification efficiency, and the characteristic curve of the usage of the electrostatic purification device includes at least one of the operating curve of the fan of the electrostatic purification device, the operating curve of the driving mechanism, the air volume curve of the electrostatic purification device, and the purification efficiency curve. On this basis, the step S210 may include:

Collect the operating parameters of the fan of the electrostatic purification device within the preset period, and use the operating parameters of the fan of the electrostatic purification device to draw the operating curve of the fan of the electrostatic purification device;

And/or, collect the operating parameters of the driving mechanism within a preset period, and use the operating parameters of the driving mechanism to draw the operating curve of the driving mechanism;

And/or, collect the air volume of the electrostatic purification device within the preset period, and draw the air volume curve of the electrostatic purification device according to the air volume of the electrostatic purification device;

And/or, collect the oil fume concentration at the air inlet end and the air outlet end of the electrostatic purification device within a preset period;

According to the purification efficiency formula Calculate the purification efficiency A; among them, _before C is the oil fume concentration at the air inlet end of the electrostatic purification device, and _after C is the oil fume concentration at the air outlet end of the electrostatic purification device;

Use the purification efficiency to draw the purification efficiency curve.

S220. Compare the usage characteristic curve of the electrostatic purification device with a plurality of preset electrostatic purification device usage characteristic curves in the electrostatic purification device usage characteristic curve database, and determine the closest preset electrostatic purification device usage characteristic curve.

This step is based on the above application scenarios of different business types, the pre-drawn electrostatic purification device usage characterization curves form a database, and then use the actual detection of the characterization curves to compare with the standard preset characterization curves in the database to determine the process of the closest application scenario of the current electrostatic purification device.

S230. Find the best time interval and the best adjustment amount corresponding to the closest preset electrostatic purification device usage characteristic curve.

As mentioned above, since the degree of oil fume and the probability of high-concentration oil fume are different in different business application scenarios, when adjusting the opening ratio of the filter, it can adapt to the degree of oil fume and the probability of high-concentration oil fume, and reasonably set the time interval and adjustment amount for each adjustment. The optimal time interval and best adjustment in this step is based on the degree of oil fume and high concentration of oil fume in different industrial application scenarios. Through experiments and simulation simulation, pre -obtained adaptation of the preset interval and preset adjustment of the corresponding application scenario. The pre -set time interval and adjustment can meet the following relationships. For application scenarios, you can set a larger interval and large adjustment amount. At this time, the filter can be quickly adjusted when adjusting the perforation rate, so that the oil fume can meet the emission requirements faster. For application scenarios where the degree of soot is light and the probability of high-concentration soot is small, a smaller time interval and a larger adjustment amount can be set. At this time, the filter adjustment will not cause excessive discharge resistance, thereby reducing the fan load and energy consumption. Therefore, since the characteristic curve of the usage of the electrostatic purification device and the optimal time and optimal adjustment amount of the phase mapping are preset in different application scenarios, after determining the closest characteristic curve, the best time interval and the optimal adjustment amount suitable for this application scenario can be found according to the mapping relationship.

S240. Collect the oil fume concentration at the air outlet of the electrostatic purification device in real time.

S250. When the oil fume concentration at the air outlet of the electrostatic purification device exceeds the standard oil fume concentration range, gradually control the filter screen to adjust the opening ratio at an optimal time interval, according to each adjustment amount being the optimal adjustment amount, until the oil fume concentration at the air outlet of the electrostatic purification device is within the standard oil fume concentration range.

This step is essentially an automatic adjustment process based on the optimal time interval and optimal adjustment amount determined above. It can be understood that since the optimal time interval and optimal adjustment amount are set to adapt to the degree of oil fume and the change of the oil fume in the current application scenario, in the application scenario with a severe degree of oil fume, using this optimal time interval and optimal adjustment amount can quickly adjust the opening ratio, so that the oil fume can meet the emission requirements more quickly and optimize the purification efficiency; Excessive discharge resistance can reduce the fan load, reduce the power consumption of the purifier, prolong the life of the purifier and the maintenance cycle, etc.

In the filter adjustment method provided by Embodiment 2 of the present invention, the characteristic parameters of the usage of the electrostatic purification device in the preset period are collected, and the characteristic parameters of the usage of the electrostatic purification device are used to draw the characteristic curve of the usage of the electrostatic purification device; the characteristic curve of the usage of the electrostatic purification device is compared with a plurality of preset characteristic curves of the usage of the electrostatic purification device in the database of the characteristic curves of the usage of the electrostatic purification device, and the closest preset characteristic curve of the usage of the electrostatic purification device is determined; the optimal time interval and the optimal adjustment amount corresponding to the closest preset characteristic curve of the usage of the electrostatic purification device are found. Using this method, the filter screen of the electrostatic purification device can be adjusted to adapt to the current application scenario, so that the oil fume can meet the emission requirements more quickly, optimize the purification efficiency, and not cause excessive discharge resistance, thereby reducing the load on the fan, so that it has the advantages of reducing the power consumption of the purifier, extending the life of the purifier and maintenance cycle.

Embodiment three

FIG. 13 is a schematic flow chart of a filter adjustment method provided by Embodiment 3 of the present invention. Embodiment 2 is optimized on the basis of the above-mentioned embodiments. In this embodiment, the following steps are optionally added:

Real-time collection of oil fume concentration at the air inlet end of the electrostatic purification device;

According to the purification efficiency formula Calculate the purification efficiency A; among them, _before C is the oil fume concentration at the air inlet end of the electrostatic purification device, and _after C is the oil fume concentration at the air outlet end of the electrostatic purification device;

Real-time collection of air volume of electrostatic purification device;

Within the preset air volume range of the electrostatic purification device, when the purification efficiency is less than the first purification efficiency lower limit value, a filter maintenance reminder is given; wherein, the first purification efficiency lower limit value is the standard purification efficiency lower limit value under the preset electrostatic purification device air volume range.

In addition, you can also choose to add the following steps:

Real-time collection of oil fume concentration at the air inlet end of the electrostatic purification device;

According to the purification efficiency formula Calculate the purification efficiency A; among them, _before C is the oil fume concentration at the air inlet end of the electrostatic purification device, and _after C is the oil fume concentration at the air outlet end of the electrostatic purification device;

Real-time collection of wind pressure at the air inlet and outlet of the electrostatic purification device;

The difference between the wind pressure at the air outlet of the electrostatic purification device and the wind pressure at the air inlet exceeds the maximum pressure difference value during the adjustment process of the opening ratio of the filter screen, and when the purification efficiency is less than the second lower limit value of the purification efficiency, a filter maintenance prompt is given; wherein, the lower limit value of the second purification efficiency is the standard purification efficiency at the maximum pressure difference during the adjustment process of the filter screen opening ratio.

Please refer to Embodiment 1 for the content that is not exhaustive in this embodiment.

As shown in Figure 13, a filter adjustment method provided by Embodiment 3 of the present invention includes the following steps:

S310. Collecting the oil fume concentration at the air outlet of the electrostatic purification device in real time;

S320. When the oil fume concentration at the air outlet of the electrostatic purification device exceeds the standard oil fume concentration range, gradually control the filter screen to adjust the opening ratio at each preset time interval according to each adjustment amount as the preset adjustment amount until the oil fume concentration at the air outlet of the electrostatic purification device is within the standard oil fume concentration range.

S330. Collect the oil fume concentration at the air inlet end of the electrostatic purification device in real time.

Continuing to refer to FIG. 2 and FIG. 3 , it can be understood that this step is a process of using the oil fume detection mechanism 40 installed at the air inlet end of the electrostatic purification device, that is, an online monitor, to monitor the oil fume concentration at the air inlet end in real time.

S340, according to the purification efficiency formula Calculate the purification efficiency A; among them, _before C is the oil fume concentration at the air inlet end of the electrostatic purification device, and _after C is the oil fume concentration at the air outlet end of the electrostatic purification device.

S350. Collect the air volume of the electrostatic purification device in real time.

The oil fume detection mechanism 40 , the on-line monitor, can not only monitor the oil fume, but also detect air volume information. This process is also a process of using the oil fume detection mechanism 40 , that is, the online monitor, to perform real-time air volume detection.

S360. Within the preset air volume range of the electrostatic purification device, when the purification efficiency is less than a first purification efficiency lower limit, perform a filter maintenance prompt; wherein, the first purification efficiency lower limit is a standard purification efficiency lower limit under the preset electrostatic purification device air volume range.

Wherein, the lower limit value of the standard purification efficiency under the preset air volume range of the electrostatic purification device refers to the minimum purification efficiency under the preset air volume range of the electrostatic purification device when the filter is in a normal and healthy state. It can be understood that when the preset air volume of the electrostatic purification device is met, if the purification efficiency obtained by real-time collection and calculation is lower than the minimum purification efficiency under the normal and healthy state of the filter screen, it indicates that there is a problem with the purification efficiency of the filter screen at this time, that is, the filter screen is in an unhealthy state and needs to be maintained. Therefore, under this condition, the filter screen maintenance reminder is given, and the user can maintain and maintain the filter screen in time, so as to ensure the purification effect of the purification device and improve the service life of the purification device. The preset air volume range of the electrostatic purification device can be set according to the actual situation. For example, the corresponding air volume Q when the electrostatic purification device is at the lowest purification efficiency can be predetermined, and the ±10% range of the air volume Q can be used as the preset air volume range.

What needs to be added is that those skilled in the art can design the method of filter maintenance reminder here according to actual needs. For example, an indicator light, a buzzer, etc. can be installed on the electrostatic purification device, or the cloud platform can be used to connect to the mobile terminal, and send reminder information to the mobile terminal through the cloud platform, etc., which are not limited herein.

S370. Collect the wind pressure at the air inlet and the air outlet of the electrostatic purification device in real time.

The oil fume detection mechanism 40 (on-line monitor) mentioned above can not only monitor oil fume, but also detect wind pressure information. This process is also a real-time wind pressure detection process using the oil fume detection mechanism 40 (on-line monitor).

S380. The difference between the wind pressure at the air outlet of the electrostatic purification device and the wind pressure at the air inlet exceeds the maximum pressure difference value during the adjustment process of the opening ratio of the filter screen, and when the purification efficiency is less than the second lower limit value of the purification efficiency, a filter maintenance reminder is given; wherein, the second lower limit value of the purification efficiency is the standard purification efficiency at the maximum pressure difference during the adjustment process of the filter screen opening ratio.

Here, the standard purification efficiency at the maximum pressure difference during the adjustment of the opening ratio of the filter screen refers to the purification efficiency at the maximum pressure difference during the adjustment process of the opening ratio of the filter screen when the filter screen is in a normal and healthy state. It can be understood that the electrostatic purification device will show the minimum purification efficiency at the maximum pressure difference. Under this standard purification efficiency, if the air outlet and air inlet air pressure monitored by the oil fume detection mechanism 40, that is, the online monitor in real time, meets the maximum pressure difference condition, and the purification efficiency at this time is lower than the standard purification efficiency, it indicates that there is a problem with the purification efficiency of the filter at this time, that is, the filter is in an unhealthy state and needs to be maintained. Improve the purification effect and improve the service life of the purification device. It should also be added that the method for prompting the maintenance of the filter here is the same as that described above, without limitation, and will not be repeated here.

A filter adjustment method provided by Embodiment 3 of the present invention increases the real-time collection of the oil fume concentration at the air inlet end of the electrostatic purification device; according to the purification efficiency formula 计算净化效率A；其中，C_前为静电净化装置进风端的油烟浓度，C_后为静电净化装置出风端的油烟浓度；实时采集静电净化装置风量；在预设静电净化装置风量范围内，当净化效率小于第一净化效率下限值时，进行滤网维护提示；其中，第一净化效率下限值为预设静电净化装置风量范围下的标准净化效率下限值；实时采集静电净化装置进风口和出风口的风压；在静电净化装置出风口的风压与进风口的风压之差超出滤网开孔率调节过程中的最大压差值，且当净化效率小于第二净化效率下限值时，进行滤网维护提示；其中，第二净化效率下限值为滤网开孔率调节过程中的最大压差时的标准净化效率。 By using this method, the health status of the filter screen can be judged through real-time monitoring of the purification efficiency of the filter screen, and maintenance prompts can be given in time, so that the user can clean and maintain the filter screen in time, thereby ensuring the purification effect of the purification device and improving the service life of the purification device.

Embodiment four

Fig. 14 is a schematic diagram of a filter adjustment control strategy of an electrostatic purification device provided in Embodiment 4 of the present invention. Referring to Fig. 2-Fig. First, the front and rear ends of the electrostatic purification device are equipped with an oil fume detection mechanism 40, that is, an online monitor, which can monitor parameters including air volume, wind pressure, oil fume concentration, temperature, etc. at any time. Before the purification device operates, the fixed orifice plate, that is, the first filter screen 21 is fixed in the groove of the guide rail. The cam 321 in the volute shaft, that is, the reversing mechanism 32, is in contact with the moving orifice plate, that is, the second filter screen 22 at the maximum radius ( FIG. 7 ), the spring is in a compressed state, the orifice plate is in a state of high porosity, and the oil fume detection mechanism 40, that is, the on-line monitor is in a state of continuous detection.

Oil fume purification monitors and controls the oil fume emission concentration, that is, the concentration of oil fume after purification. Therefore, the cloud platform sends a start-stop action signal to the drive motor 31 according to the oil fume detection mechanism 40 at the rear end of the purification device, that is, the oil fume concentration signal in the online monitor, so that the drive motor 31 operates for a certain period of time, and rotates a certain angle to the volute shaft, that is, the cam 321 in the reversing mechanism 32. The plate and the movable orifice plate, that is, the second filter screen 22, move a displacement together, so as to adjust the opening of the fixed orifice plate, that is, the first filter screen 21.

According to the oil fume emission concentration stipulated by national standards and landmarks, set a high limit value C1 of oil fume emission concentration and a low limit value C2 of emission concentration. When detecting the concentration value of oil fume emission C≥C1, the cloud platform outputs a control signal every T time to the drive motor 31 to act counterclockwise for a certain time t until C2≤C<C1 to stop the drive motor 31; ≤C<C1 stops the driving motor 31 from acting.

Since the purification time and emission concentration of the purification device will lag in time, it is necessary to adjust the driving motor 31 action interval time T and the driving motor 31 action time t according to the situation to achieve the best energy efficiency. The cloud platform collects emission concentration signals, and judges the user's catering situation according to the daily opening time and concentration of the purification device, so as to adjust the optimal interval time T and action time t.

Control C2≤C<C1, and make the automatic adjustment orifice plate reach the best interval time T and action time t, which is beneficial to reduce the power consumption of the purification device, prolong the life of the purification device and the maintenance cycle.

Furthermore, the cloud platform collects the front-end and back-end oil fume concentration data of the purification device. The front-end concentration can monitor the oil fume emission status of different catering businesses, different dates, and different times of the day, and the back-end concentration can control the emission concentration of the oil fume after purification. The cloud platform can also calculate the current purification efficiency of the purification device through the front-end and back-end concentration data. The purification efficiency A is calculated after the signals before _{and after} the oil fume concentration C at the front and _rear ends of the purification device are collected on the cloud platform, and the formula is as follows:

The oil fume detection data is uploaded to the cloud platform, and data statistics, analysis, and calculation are performed on the cloud platform database to form a complete purification device operating curve. According to the monitoring of the oil fume concentration at the front end of the purification device by the cloud platform, the user's catering usage and simulation curves are drawn, and different usage status curves during the peak period and the trough period are formulated, so that the usage status curve matches the usage curve under the standard catering business mode, and the catering business mode in which the current purification device is located can be determined, and then the drive motor 31 of the filter can be controlled according to the interval time T and action time t set for different catering business modes, so that the concentration of oil fume emission C _{is within} the range of C2 ≤ C and < C1, and the purification device can achieve optimal operation. state to improve the purification efficiency of the purification device.

Furthermore, the cloud platform forms a complete operating curve of the purification device through the detection of the air volume Q and pressure P signals by the online monitor, as well as the data statistics, analysis and calculation of the cloud platform database, so as to feed back the health status of the purification device:

(1) Under the air volume Q±10%Q, when the purification efficiency A<A1, it is judged that the purification device needs maintenance;

(2) When the pressure difference P-before-P>P1 and the purification efficiency A<A1, it is judged that the purification device needs to be maintained;

Among them, P1 and A1 are determined during the initial design of the equipment, and are adjusted for different situations through later operation.

Under the control of the cloud platform, the automatic control, precise control, and health monitoring of the orifice network are carried out to achieve the best purification effect under actual working conditions, which greatly increases the purification efficiency and service life of the purification device.

Embodiment five

Fig. 15 is a schematic structural diagram of a filter adjustment device provided by Embodiment 5 of the present invention. This device is applicable to the situation where an electrostatic purification device purifies lampblack. The device can be implemented by software and/or hardware, and is generally integrated on the electrostatic purification device.

As shown in Figure 15, the device includes:

The oil fume collection module 151 is used to collect the oil fume concentration at the air outlet end of the electrostatic purification device in real time;

The control module 152 is used to gradually control the opening ratio of the filter screen to adjust the opening ratio of the filter screen at each preset time interval when the oil fume concentration at the air outlet of the electrostatic purification device exceeds the standard oil fume concentration range, until the oil fume concentration at the air outlet of the electrostatic purification device is within the standard oil fume concentration range.

In this embodiment, the device first collects the oil fume concentration at the air outlet end of the electrostatic purification device in real time through the oil fume collection module; then, through the control module, when the oil fume concentration at the air outlet end of the electrostatic purification device exceeds the standard range of oil fume concentration, every preset time interval, according to each adjustment amount as the preset adjustment amount, gradually controls the opening ratio of the filter screen until the oil fume concentration at the air outlet end of the electrostatic purification device is within the standard oil fume concentration range. This embodiment provides a filter screen adjustment device, which can automatically adjust the opening ratio of the filter screen by the electrostatic purification device according to the oil fume concentration, flexibly adjust the purifier resistance and purification efficiency of the electrostatic purification device, improve the purification efficiency and purification effect of the electrostatic purification device, and make the exhausted oil fume concentration meet the emission standards.

Based on the above technical solution, the control module 152 is specifically used for: when C≥C1, every preset time interval, according to each adjustment amount as the preset adjustment amount, gradually controls the filter screen to reduce the opening ratio until C<C1;

When C<C2, every preset time interval, according to each adjustment amount as the preset adjustment amount, gradually control the filter to increase the opening rate until C≥C2;

Among them, C is the oil fume concentration at the air outlet of the electrostatic purification device, C1 is the upper limit of the oil fume concentration in the standard oil fume concentration range, and C2 is the lower limit of the oil fume concentration in the standard oil fume concentration range.

On the basis of the above optimization, the electrostatic purification device includes a housing, a filter mechanism and a drive mechanism. The filter mechanism includes two filter screens, and the two filter screens are arranged on the housing and arranged along the flow direction of the fluid; the drive mechanism is mechanically connected to the filter screen. Based on this, the control module is also specifically used for: when the oil fume concentration at the air outlet end of the electrostatic purification device exceeds the standard oil fume concentration range, every preset time interval, according to a fixed driving rate, with each adjustment time as the preset adjustment time, Gradually control the driving mechanism to adjust the relative positions of the openings on the two filter screens until the oil fume concentration at the air outlet end of the electrostatic purification device is within the standard oil fume concentration range.

Further, the device also includes:

The curve drawing module is used to collect the characteristic parameters of the electrostatic purification device usage condition of the electrostatic purification device within a preset period, and use the characteristic parameter of the usage condition of the electrostatic purification device to draw the characteristic curve of the usage condition of the electrostatic purification device;

The curve comparison module is used to compare the usage characteristic curve of the electrostatic purification device with a plurality of preset electrostatic purification device usage characteristic curves in the electrostatic purification device usage characteristic curve database, and determine the closest preset electrostatic purification device usage characteristic curve;

The search module is used to find the best time interval and the best adjustment amount corresponding to the closest preset electrostatic purification device usage characteristic curve.

Based on this, the control module is also used to gradually control the opening rate of the filter screen to adjust the opening ratio at an optimal time interval when the oil fume concentration at the air outlet of the electrostatic purification device exceeds the standard range of oil fume concentration, until the oil fume concentration at the air outlet of the electrostatic purification device is within the standard range of oil fume concentration.

Furthermore, the curve drawing module includes:

The fan drawing unit is used to collect the operating parameters of the fan of the electrostatic purification device within a preset period, and use the operating parameters of the fan of the electrostatic purification device to draw the operating curve of the fan of the electrostatic purification device;

And/or, the driving mechanism drawing unit is used to collect the operating parameters of the driving mechanism within a preset period, and use the operating parameters of the driving mechanism to draw the operating curve of the driving mechanism;

And/or, the air volume drawing unit is used to collect the air volume of the electrostatic purification device within a preset period, and draw the air volume curve of the electrostatic purification device according to the air volume of the electrostatic purification device;

And/or, the oil fume collection unit is used to collect the oil fume concentration at the air inlet end and the air outlet end of the electrostatic purification device within a preset period;

Purification efficiency calculation unit, used to calculate according to the purification efficiency formula Calculate the purification efficiency A; among them, _before C is the oil fume concentration at the air inlet end of the electrostatic purification device, and _after C is the oil fume concentration at the air outlet end of the electrostatic purification device;

The purification efficiency drawing unit is used to use the purification efficiency to draw a purification efficiency curve.

On the basis of the above optimization, the oil fume collection module 151 is also used to collect the oil fume concentration at the air inlet end of the electrostatic purification device in real time;

The unit also includes:

Purification efficiency calculation unit, used to calculate according to the purification efficiency formula Calculate the purification efficiency A; among them, _before C is the oil fume concentration at the air inlet end of the electrostatic purification device, and _after C is the oil fume concentration at the air outlet end of the electrostatic purification device;

The air volume acquisition unit is used to collect the air volume of the electrostatic purification device in real time;

The maintenance reminder unit is used to give a filter screen maintenance reminder when the purification efficiency is less than the first purification efficiency lower limit value within the preset air volume range of the electrostatic purification device; wherein, the first purification efficiency lower limit value is the standard purification efficiency lower limit value under the preset electrostatic purification device air volume range.

Optionally, the device may also include:

Wind pressure collection unit, used for real-time collection of wind pressure at the air inlet and air outlet of the electrostatic purification device;

The maintenance prompt unit is also used to perform filter screen maintenance prompts when the difference between the wind pressure at the air outlet of the electrostatic purification device and the wind pressure at the air inlet exceeds the maximum pressure difference value during the adjustment process of the filter opening ratio, and when the purification efficiency is less than the second lower limit value of the purification efficiency; wherein, the second lower limit value of the purification efficiency is the standard purification efficiency at the maximum pressure difference during the adjustment process of the filter screen opening ratio.

The filter adjusting device described above can execute the filter adjusting method provided by any embodiment of the present invention, and has corresponding functional modules and beneficial effects for executing the method.

Embodiment six

Fig. 16 is a schematic structural diagram of an electrostatic purification device provided in Embodiment 6 of the present invention. As shown in FIG. 16 , the device provided by Embodiment 4 of the present invention includes: one or more processors 161 and a storage device 162; there may be one or more processors 161 in the device, and one processor 161 is taken as an example in FIG.

The device may also include: input means 163 and output means 164 .

The processor 161, the storage device 162, the input device 163 and the output device 164 in the device may be connected through a bus or in other ways. In FIG. 16, connection through a bus is taken as an example.

The storage device 162 in this equipment is as a kind of computer-readable storage medium, and can be used for storing one or more programs, and described program can be software program, computer executable program and module, as the program instruction/module corresponding to the filter screen adjusting method provided in embodiment one, two or three of the present invention (for example, the module in the filter screen adjusting device shown in Figure 15 includes: oil fume collection module 151, is used for collecting the oil fume concentration of the outlet end of electrostatic purification device in real time; When the smoke concentration range is within the preset time interval, the opening ratio of the filter screen is gradually controlled according to the preset adjustment amount at each preset time interval until the oil fume concentration at the air outlet of the electrostatic purification device is within the standard oil fume concentration range). The processor 161 executes various functional applications and data processing of the terminal device by running the software programs, instructions and modules stored in the storage device 162, that is, implements the filter adjustment method in the above method embodiment.

The storage device 162 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application program required by at least one function; the data storage area may store data created according to the use of the device, and the like. In addition, the storage device 162 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage devices. In some examples, the storage device 162 may further include memories that are remotely located relative to the processor 161, and these remote memories may be connected to the device through a network. Examples of the aforementioned networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The input device 163 can be used to receive input numbers or character information, and generate key signal input related to user settings and function control of the device. The output device 164 may include a display device such as a display screen.

And, when one or more programs included in the above-mentioned device are executed by the one or more processors 161, the programs perform the following operations:

Real-time collection of oil fume concentration at the air outlet of the electrostatic purification device;

When the oil fume concentration at the air outlet of the electrostatic purification device exceeds the standard oil fume concentration range, every preset time interval, according to each adjustment amount as the preset adjustment amount, gradually control the filter to adjust the opening ratio until the oil fume concentration at the air outlet of the electrostatic purification device is within the standard oil fume concentration range.

Embodiment seven

Embodiment 7 of the present invention provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, it is used to perform a filter adjustment method, the method comprising:

Real-time collection of oil fume concentration at the air outlet of the electrostatic purification device;

When the oil fume concentration at the air outlet of the electrostatic purification device exceeds the standard oil fume concentration range, every preset time interval, according to each adjustment amount as the preset adjustment amount, gradually control the filter to adjust the opening ratio until the oil fume concentration at the air outlet of the electrostatic purification device is within the standard oil fume concentration range.

Optionally, when the program is executed by the processor, it can also be used to execute the filter adjustment method provided by any embodiment of the present invention.

The computer storage medium in the embodiments of the present invention may use any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a Random Access Memory (RAM), a Read Only Memory (ROM), an Erasable Programmable Read Only Memory (EPROM), a flash memory, an optical fiber, a portable CD-ROM, an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. A computer readable storage medium may be any tangible medium that contains or stores a program for use by or in connection with an instruction execution system, apparatus, or device.

A computer readable signal medium may include a data signal carrying computer readable program code in baseband or as part of a carrier wave. Such propagated data signals may take many forms, including but not limited to: electromagnetic signals, optical signals, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium other than a computer readable storage medium that can transmit, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wire, optical cable, Radio Frequency (RF), etc., or any suitable combination of the foregoing.

Computer program code for carrying out the operations of the present invention can be written in one or more programming languages, or combinations thereof, including object-oriented programming languages—such as Java, Smalltalk, C++, and conventional procedural programming languages—such as the “C” language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In cases involving a remote computer, the remote computer can be connected to the user computer through any kind of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (e.g., via the Internet using an Internet service provider).

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. A filter screen adjustment method is characterized in that, being applied in an electrostatic purification device, the filter screen adjustment method comprises: Real-time collection of oil fume concentration at the air outlet of the electrostatic purification device; When the oil fume concentration at the air outlet of the electrostatic purification device exceeds the standard oil fume concentration range, every preset time interval, according to each adjustment amount as the preset adjustment amount, gradually control the filter to adjust the opening ratio until the oil fume concentration at the air outlet of the electrostatic purification device is within the standard oil fume concentration range. 2. The filter adjustment method according to claim 1, characterized in that, when the oil fume concentration at the air outlet end of the electrostatic purification device exceeds the standard oil fume concentration range, every preset time interval, according to each adjustment amount as the preset adjustment amount, the filter screen is gradually controlled to adjust the opening ratio until the oil fume concentration at the air outlet end of the electrostatic purification device is within the standard oil fume concentration range, including: When C≥C1, every preset time interval, according to each adjustment amount as the preset adjustment amount, gradually control the filter screen to reduce the opening rate until C<C1; When C<C2, every preset time interval, according to each adjustment amount as the preset adjustment amount, gradually control the filter to increase the opening rate until C≥C2; Wherein, C is the soot concentration at the air outlet of the electrostatic purification device, C1 is the upper limit of the soot concentration in the standard soot concentration range, and C2 is the lower limit of the soot concentration in the standard soot concentration range. 3. The filter screen adjustment method according to claim 1, wherein the electrostatic purification device comprises a housing, a filter mechanism and a drive mechanism, the filter mechanism comprises two filter screens, the two filter screens are arranged on the housing and arranged along the flow direction of the fluid; the drive mechanism is mechanically connected to the filter screen; When the oil fume concentration at the air outlet of the electrostatic purification device exceeds the standard oil fume concentration range, every preset time interval, according to each adjustment amount as the preset adjustment amount, gradually control the filter to adjust the opening ratio until the oil fume concentration at the air outlet of the electrostatic purification device is within the standard oil fume concentration range, including: When the oil fume concentration at the air outlet of the electrostatic purification device exceeds the standard range of oil fume concentration, every preset time interval, according to a fixed driving rate, with each adjustment time as the preset adjustment time, gradually control the drive mechanism to adjust the relative positions of the openings on the two filters until the oil fume concentration at the air outlet of the electrostatic purification device is within the standard range of oil fume concentration. 4. The filter screen adjustment method according to claim 1, further comprising: Collecting the electrostatic purification device usage characteristic parameters of the electrostatic purification device within a preset period, and using the electrostatic purification device usage characteristic parameters to draw an electrostatic purification device usage characteristic curve; Comparing the usage characteristic curve of the electrostatic purification device with a plurality of preset electrostatic purification device usage characteristic curves in the electrostatic purification device usage characteristic curve database, and determining the closest preset electrostatic purification device usage characteristic curve; Find the optimal time interval and optimal adjustment amount corresponding to the closest preset electrostatic purification device usage characteristic curve; When the oil fume concentration at the air outlet of the electrostatic purification device exceeds the standard oil fume concentration range, every preset time interval, according to each adjustment amount as the preset adjustment amount, gradually control the filter to adjust the opening ratio until the oil fume concentration at the air outlet of the electrostatic purification device is within the standard oil fume concentration range, including: When the oil fume concentration at the air outlet of the electrostatic purification device exceeds the standard oil fume concentration range, at each optimal time interval, the filter screen is gradually controlled to adjust the opening ratio according to the optimal adjustment amount each time, until the oil fume concentration at the air outlet of the electrostatic purification device is within the standard oil fume concentration range. 5. The filter screen adjustment method according to claim 4, wherein the electrostatic purification device comprises a housing, a filter mechanism and a drive mechanism, the filter mechanism comprises two filter screens, the two filter screens are arranged on the housing and arranged along the flow direction of the fluid; the drive mechanism is mechanically connected to the filter screen; The characteristic parameters of the usage of the electrostatic purification device include at least one of the operating parameters of the fan of the electrostatic purification device, the operating parameters of the driving mechanism, the air volume parameters of the electrostatic purification device, and the purification efficiency. Collecting the electrostatic purification device usage characterization parameters of the electrostatic purification device within a preset period, and using the electrostatic purification device usage characterization parameters to draw an electrostatic purification device usage characterization curve, including: Collect the operating parameters of the fan of the electrostatic purification device within the preset period, and use the operating parameters of the fan of the electrostatic purification device to draw the operating curve of the fan of the electrostatic purification device; And/or, collect the operating parameters of the driving mechanism within a preset period, and use the operating parameters of the driving mechanism to draw the operating curve of the driving mechanism; And/or, collect the air volume of the electrostatic purification device within the preset period, and draw the air volume curve of the electrostatic purification device according to the air volume of the electrostatic purification device; And/or, collect the oil fume concentration at the air inlet end and the air outlet end of the electrostatic purification device within a preset period; According to the purification efficiency formula Calculate the purification efficiency A; among them, _before C is the oil fume concentration at the air inlet end of the electrostatic purification device, and _after C is the oil fume concentration at the air outlet end of the electrostatic purification device; Use the purification efficiency to draw the purification efficiency curve. 6. The filter screen adjustment method according to claim 1, further comprising: Collecting the oil fume concentration at the air inlet end of the electrostatic purification device in real time; According to the purification efficiency formula Calculate the purification efficiency A; among them, _before C is the oil fume concentration at the air inlet end of the electrostatic purification device, and _after C is the oil fume concentration at the air outlet end of the electrostatic purification device; Real-time collection of air volume of electrostatic purification device; Within the preset air volume range of the electrostatic purification device, when the purification efficiency is less than the first purification efficiency lower limit value, a filter screen maintenance reminder is given; wherein, the first purification efficiency lower limit value is the standard purification efficiency lower limit value under the preset electrostatic purification device air volume range. 7. The filter screen adjustment method according to claim 1, further comprising: Collecting the oil fume concentration at the air inlet end of the electrostatic purification device in real time; According to the purification efficiency formula Calculate the purification efficiency A; among them, _before C is the oil fume concentration at the air inlet end of the electrostatic purification device, and _after C is the oil fume concentration at the air outlet end of the electrostatic purification device; Real-time collection of wind pressure at the air inlet and outlet of the electrostatic purification device; The difference between the wind pressure at the air outlet of the electrostatic purification device and the wind pressure at the air inlet exceeds the maximum pressure difference value during the adjustment process of the filter screen opening ratio, and when the purification efficiency is less than the second purification efficiency lower limit value, a filter screen maintenance prompt is given; wherein, the second purification efficiency lower limit value is the standard purification efficiency at the maximum pressure difference during the filter screen opening ratio adjustment process. 8. A filter adjusting device, characterized in that it is applied to an electrostatic purification device, and the filter adjusting device comprises: The oil fume collection module is used to collect the oil fume concentration at the air outlet end of the electrostatic purification device in real time; The control module is used to gradually control the opening ratio of the filter screen to adjust the opening ratio of the filter screen at each preset time interval when the oil fume concentration at the air outlet of the electrostatic purification device exceeds the standard oil fume concentration range, until the oil fume concentration at the air outlet of the electrostatic purification device is within the standard oil fume concentration range. 9. An electrostatic purification device, characterized in that it comprises: one or more processors; storage means for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the filter adjustment method according to any one of claims 1-7. 10. A computer-readable storage medium, on which a computer program is stored, characterized in that, when the program is executed by a processor, the filter adjustment method according to any one of claims 1-7 is realized.