CN113586295A - Self-cleaning air filter - Google Patents

Abstract

The invention relates to the technical field of air dust removal, and discloses a self-cleaning air filter which comprises a dust removal filter screen and an outer frame for fixing the dust removal filter screen, wherein the dust removal filter screen comprises a plurality of groups of air filter elements which are arranged in parallel and have the same structure and are used for separating air impurities, an air inlet and a dust exhaust port are formed at two ends of each air filter element respectively, an air exhaust channel is formed between each air filter element and each partition board, a flow blocking structure is arranged at one end, close to the air inlet, of each partition board, a flow equalizer for equalizing air flow at the dust exhaust port is arranged at the upper side of each air filter element, and each flow equalizer is of a tubular structure with a dust collection channel. The device has the characteristics of wide application range, strong self-cleaning capability and no maintenance.

Description

Self-cleaning air filter

Technical Field

The invention relates to the technical field of air dust removal, in particular to a self-cleaning air filter.

Background

In the current society, rail transportation means mainly comprise transportation carriers such as diesel locomotives, electric locomotives, motor train units, high-speed rails, carriages of passenger cars and trucks, light rails, subways and the like, and road transportation means mainly comprise automobiles. Their normal operation requires the intake of a large amount of air to meet the requirements of combustion of the internal combustion engine, heat dissipation of electronic and mechanical components, and cooling of air conditioning and other facilities. Along with the suction of a large amount of air, a large amount of impurities such as sand, catkin, plant leaves, paper scraps, plastics and the like exist in the air, the impurities can cause abrasion to an internal combustion engine and the like, the service life of the internal combustion engine is shortened, and a dust removal device is usually arranged on an air supply channel of equipment in order to prevent the impurities from entering the equipment.

Dust collector mainly plays the effect with impurity air separation, and then obtains clean air, filters great particulate matter impurity, plays certain dust removal effect, but can't detach tiny particle or the less impurity of proportion (especially flotage such as plant fragment, catkin, poplar wadding), especially in the season that floats heavy or the feather wadding is more, and a large amount of flocculent impurity gets into, easily makes dust removal filter screen block, reduces air filter's life.

In addition, the dust exhaust outlet of the dust exhaust channel of the existing dust removal device is often directly connected with the fan or is connected with the fan through a pipeline so as to draw out dust through the suction of the fan, then the sectional area of the dust removal device is large, the number of the dust exhaust outlets is large, the suction force generated by the fan cannot be uniform, the suction force is uniformly applied to each dust exhaust outlet, especially, under the condition that the dust exhaust pipe is long, the acting force on two sides connected with the fan is large, the acting force in the middle of the dust exhaust pipe is small, the dust in the middle of the discharge pipe cannot be completely exhausted, dust impurities are accumulated near the dust exhaust channel, the dust adhesion of the dust removal device is easily accumulated at the dust exhaust outlet of the dust exhaust channel in the past, even the blockage of the dust exhaust outlet is caused, and the dust removal effect and the use of the dust removal device are influenced.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a self-cleaning air filter which can realize the self-separation of impurities in air, can completely and uniformly discharge the impurities, has strong practicability and has a maintenance-free function.

In order to achieve the above purpose, the invention provides the following technical scheme:

a self-cleaning air filter comprises a dust removal filter screen and an outer frame for fixing the dust removal filter screen, wherein the dust removal filter screen comprises a plurality of groups of air filter elements which are arranged in parallel and are separated by partition plates, the structures of the air filter elements are the same and are used for separating air impurities, the two ends of each air filter element respectively form an air inlet and a dust exhaust port, an air exhaust channel is formed between each air filter element and each partition plate, one end, close to the air inlet, of each partition plate is provided with a flow blocking structure, and each flow blocking structure is a streamline lug which is symmetrically arranged relative to each partition plate and is provided with an arc-shaped surface;

every the current equalizer that is used for balanced dust exhaust mouth department air current is all installed to air filter's upside, the current equalizer sets up to the tubular structure that has the collection dirt passageway, the both sides of collection dirt passageway are the collection dirt export, the frame both sides are equipped with the collection dirt cavity, the collection dirt export with collection dirt cavity intercommunication, two collection dirt cavity passes through the dust collecting pipe intercommunication.

In the invention, further, the radial cross-sectional area of the flow equalizer is reduced from the middle to two sides, the dust collecting channel is divided into a first channel and a second channel by a baffle, a plurality of openings are arranged in the middle of the baffle, the first channel is communicated with the second channel through the openings, first dust collecting ports are formed on two sides of the first channel, second dust collecting ports are formed on the openings of the second channel, and the first dust collecting ports and the second dust collecting ports form a dust collecting outlet of the flow equalizer.

In the invention, further, two symmetrically arranged flow guide transition parts extend inwards from one side of the flow equalizer, which is far away from the second channel, a gap between the two flow guide transition parts forms a transition port, the transition port is communicated with the dust exhaust port, air containing impurities enters the first channel through the dust exhaust port and the transition port, air close to two sides of the flow equalizer is exhausted from the first dust collection port, and air close to the middle part of the flow equalizer enters the second channel through an opening and is exhausted from the second dust collection port.

In the present invention, preferably, two of the flow guiding transition portions are in a figure-of-eight shape, and the first channel includes a V-shaped cavity formed between each transition portion and an inner wall of the current equalizer.

In the present invention, it is preferable that the aperture of the opening is larger than the transition port.

In the invention, further, the radial cross-sectional area of the flow resisting structure is gradually reduced from the dust exhaust port to the air inlet, and the radial cross-section of the flow resisting structure is peach-shaped.

In the present invention, it is preferable that the radial cross section of the flow blocking structure is an arc shape which is convex or concave.

In the invention, further, the air filter element comprises two symmetrically arranged guide plates with the same structure, and the distance between the two guide plates and the partition plate is gradually increased from the air inlet to one side of the dust exhaust port.

In the invention, further, a dust removal channel is formed between two guide plates, each guide plate comprises a plurality of guide plates which are arranged in parallel and at intervals, a guide channel is formed between every two adjacent guide plates, flowing air enters the dust removal channel from the air inlet, gas containing impurities is discharged from the dust discharge port, and clean air enters the air exhaust channel along the guide channels and is discharged.

In the present invention, it is preferable that the horizontal section of the air cleaner is a plane, a curved surface, or a circle.

Compared with the prior art, the invention has the beneficial effects that:

(1) the invention arranges the flow resisting structures at the end part of the clapboard, namely two sides of the air inlet, wherein the flow resisting structures are streamline convex blocks with arc surfaces, and the invention aims to generate certain resistance to the air flowing in at high speed, even if two sides entering the dust removing channel generate static pressure, because the pressure at the two sides is higher, the dust, especially small-particle dust or impurities with smaller specific gravity (especially plant fragments, catkin, poplar catkin and other floaters) can move towards the center direction of the dust removing channel more easily, thereby improving the dust removing effect. Meanwhile, the air filter utilizing the principle has strong self-cleaning capability, can ensure long-time normal work under the condition of not cleaning, does not need frequent maintenance, saves the trouble of manually cleaning the air dust removal device, and saves manpower, material resources and financial resources.

In addition, choose for use the side to have the choked flow structure of cambered surface, because the air current produces certain vortex in the position that is close to guide plate department when the cambered surface, and then makes the regional high static pressure that forms of guide plate that is located the front end, prevents because the guide plate is longer, causes the guide plate resistance undersize of air inlet front end department, can't push away impurity into the central line direction, reduces dust removal effect.

(2) The inner space of the flow equalizer is divided into a first channel and a second channel which are convenient for air flow equalization through the baffle plate, the baffle plate is provided with an opening which is used for communicating the first channel with the second channel, the radial section of the flow equalizer is gradually reduced towards two sides by taking the baffle plate as a center, namely two side walls of the flow equalizer are in an arc shape, so that the inner wall of the flow equalizer is prevented from being greatly impacted by high air speed, and meanwhile, the space of the first channel is increased through the splayed transition part, so that the flow equalization effect at a dust exhaust port is better. Because the dust removal filter screen, the current equalizer is longer, arrange unclean for the weaker dust of suction in the middle of preventing, consequently with the first passageway of current equalizer, the both ends of second passageway set up to first dust collecting opening and second dust collecting opening respectively, make the air that contains impurity through the dust exhaust opening, cross the ferryboat and get into first passageway, the air that is close to current equalizer both sides is discharged by first dust collecting opening, the air that is close to current equalizer middle part passes through the opening and gets into the second passageway, discharge by the second dust collecting opening, so, the even reposition of redundant personnel of the air that has guaranteed to contain impurity, thereby improve dust removal effect.

(3) The air filter provided by the invention has the advantages that the dust collecting cavities on the two sides are communicated through the dust collecting pipes so as to facilitate the connection of the fan, and meanwhile, the air filter can be subjected to various deformation and combination, such as a radial section of a plane structure, a curved surface structure or a circular structure, so as to meet the requirements of different installation scenes and different ventilation volumes.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a perspective view of a self-cleaning air cleaner of the present invention;

FIG. 2 is a cross-sectional side view of a self-cleaning air cleaner of the present invention;

FIG. 3 is an enlarged view of the structure A of FIG. 2 in accordance with the present invention;

FIG. 4 is a perspective cross-sectional view of a self-cleaning air cleaner of the present invention;

FIG. 5 is an enlarged view of the structure B of FIG. 4 in accordance with the present invention;

FIG. 6 is a schematic view of a flow equalizer of a self-cleaning air cleaner according to the present invention;

FIG. 7 is a schematic view of a flow blocking structure in a self-cleaning air cleaner of the present disclosure;

FIG. 8 is a schematic view of a peach shaped choked flow structure in the present invention;

FIG. 9 is a schematic view of an inwardly concave arcuate flow obstructing structure of the present invention;

FIG. 10 is a schematic view of an outwardly convex curved flow blocking structure of the present invention;

fig. 11 is a schematic view of a baffle structure of the present invention;

FIG. 12 is a velocity field distribution simulation diagram of the dust filter of the present invention under the condition of air intake velocity of 5 m/s;

FIG. 13 is a side elevational schematic view of the flat and curved air cleaner of the present invention;

FIG. 14 is a side view of the circular air cleaner of the present invention;

in the figure: 1. a dust removal filter screen; 10. a partition plate; 11. an air filter element; 110. a baffle; 1100. a flow deflector; 1100-1, a drainage surface; 1100-2, a flow guide surface; 111. an air inlet; 112. a dust exhaust port; 113. an air exhaust channel; 114. a dust removal channel; 115. a flow guide channel; 12. a flow-impeding structure; 2. an outer frame; 3. a current equalizer; 30. a first channel; 300. a first dust collection port; 301. a V-shaped cavity; 31. a second channel; 310. a second dust collecting port; 32. a baffle plate; 33. an opening; 34. a flow guide transition part; 340. a transition port; 341. a wing-shaped dust collecting surface; 4. a dust collecting cavity; 5. a dust collecting pipe; 6. and (7) mounting frames.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 3, a preferred embodiment of the present invention provides a self-cleaning air cleaner, including a dust-removing filter screen 1 and an outer frame 2 for fixing the dust-removing filter screen 1, wherein the dust-removing filter screen 1 includes a plurality of groups of air filter elements 11 separated by partition plates 10 in parallel and having the same structure for separating air impurities, two ends of the air filter elements 11 respectively form an air inlet 111 and a dust outlet 112, an air exhaust channel 113 is formed between the air filter elements 11 and the partition plates 10, one end of the partition plates 10 close to the air inlet 111 is provided with the flow blocking structure 12, and the flow blocking structure 12 is a streamlined protrusion symmetrically disposed about the partition plates 10 and having an arc surface.

Specifically, in the previous design, the flow blocking structure 12 is a protruding block disposed on the inner wall of the partition board 10, and multiple sets of flow blocking structures may be disposed according to the thickness of the dust removing filter screen 1, so as to ensure that a sufficient static pressure can be generated at the air inlet 111 when the thickness of the dust removing filter screen 1 is large. However, due to the industrial and production requirements, the thickness of the dust removal filter screen 1 needs to be reduced, and therefore, the flow blocking structure 12 is optimally designed. In this embodiment, the streamlined lug that specifically adopts and have the arcwall face, its purpose is in order to produce certain resistance to the air of high-speed inflow, and streamlined design can do benefit to and lead to wind, even the both sides that get into in the dust removal passageway 114 produce static pressure, because the pressure of both sides is great to make dust especially tiny particle micronic dust or the impurity that the proportion is less (especially plant debris, catkin, poplar wadding etc. flotage) can more easily move towards dust removal passageway 114 central direction, thereby improve dust removal effect.

In addition, as shown in fig. 7, the flow blocking structure 12 with the arc-shaped side surface is selected, the flow blocking structure 12 may have various regular or irregular shapes such as a semicircle, a triangle, a circle, an ellipse, a quadrangle, etc. with the arc-shaped surface, and as the airflow passes through the arc-shaped surface, a certain turbulent flow is generated at a position close to the guide plate 110, so that a high static pressure is formed in the guide plate 1100 area at the front end, thereby preventing the guide plate 1100 at the front end of the intake air from being too small in resistance due to the longer guide plate 110, and reducing the dust removal effect.

In a preferred embodiment provided by the present application, as shown in fig. 9 and 10, the radial cross section of the flow blocking structure 12 is an arc shape which is convex or concave. It should be noted that, in the present application, the air cleaner is positioned as shown in fig. 3, with the radial direction pointing in the horizontal direction (i.e., the direction opposite to the cross-section in fig. 3). Aiming at the arc shape protruding outwards, the high-speed airflow passes through the highest point and then extends towards the two sides outwards to generate a certain resistance effect, so that the static pressure at the air inlet 111 is increased; the concave arc-shaped flow blocking structure 12 has the largest area in contact with air at the air inlet 111, and the generated blocking effect is also the largest, so that larger static pressure can be generated on two sides through the flow blocking structure 12, and the dust removal effect is improved.

In another embodiment provided by the present invention, as shown in fig. 8, the radial cross-sectional area of the flow blocking structure 12 is gradually reduced from the dust exhaust port 112 to the air intake port 111. When outside high-speed air current got into, the less one end in contact choked flow structure 12 cross-section at first, and the one side that is narrower relatively is limited to telling the air current contact, then gets into along the arcwall face, in the bigger and bigger time of cross-sectional diameter, the resistance that produces relatively is bigger, that is to say the static pressure of both sides is bigger, and just be close to the one end of guide plate 110 at the cambered surface afterbody and produce certain vortex effect to increase the static pressure of front side guide plate 110, make impurity in the air be more easily close to the central line. The choking structure 12 with a narrow end is selected, and the narrow end, namely the contact area with air is small, so that the resistance is small when air starts to enter, and a large amount of air enters conveniently. The radial cross section of the flow resisting structure 12 is in a peach shape, a triangular shape, an oval shape and other shapes, wherein the peach shape is an optimal shape, and because the peach shape is close to the horizontal at one side close to the guide plate 110, the installation of the guide plate 110 is facilitated, meanwhile, the turbulent flow effect generated at the point is strongest, the static pressure is largest, and particularly under the condition that the thickness of the dust removing filter screen 1 is reduced, the guide plate 110 positioned at the front end can generate high static pressure, so that impurities can better move along the direction of the central line, and the dust removing effect is best.

In the present invention, as shown in fig. 3, the air filter element 11 includes two symmetrically disposed baffles 110 with the same structure, and a distance between the two baffles 110 and the partition plate 10 is gradually increased from the air inlet 111 to the dust outlet 112 side. Because the air enters from the air inlet 111, the air flow rate of the air inlet 111 is relatively large, and the air flow rate can be reduced in the flowing process of the atmosphere along the dust removing channel 114 in the air filter element 11.

A dust removal channel 114 is formed between the two guide plates 110, each guide plate 110 comprises a plurality of guide plates 1100 which are arranged in parallel and at intervals, a guide channel 115 is formed between every two adjacent guide plates 1100, flowing air enters the dust removal channel 114 from the air inlet 111, gas containing impurities is discharged through the dust discharge port 112, and clean air enters the exhaust channel 113 along the guide channel 115 and is discharged.

Specifically, the distance between each baffle 1100 and the partition 10 gradually increases along the direction from the air inlet 111 to the dust exhaust port 112, that is, the baffle 1100 inclines toward the air inlet 111. The air in the flow guide flows obliquely backward relative to the air in the dust removing channel 114, so that a high-pressure area which is higher than the pressure of the central part of the airflow in the dust removing channel 114 is formed at the joint of the flow guide channel 115 and the dust removing channel 114, the high-pressure area can push the lighter impurities (such as floccules) which are entrained in the airflow in the dust removing channel 114 and are close to the flow guide channel 115 back to the central position of the dust removing channel 114, so that the lighter impurities cannot enter the flow guide channel 115, and the lighter impurities can continuously move along with the airflow to the dust discharging channel. And if the heavier impurities (such as sand grains) entrained in the airflow of the dust removing channel 114 reach the flow guide channel 115, the impurities impact the inner wall of the flow guide channel 115 (namely the surface of the flow guide sheet 1100), are ejected back to the central position of the dust removing channel 114, and keep moving towards the dust removing channel due to the inertia of the impurities, but do not move towards the flow guide channel 115 at the oblique rear. In addition, if impurities (such as rainwater) with large moisture are mixed in the airflow of the dust removing channel 114 and reach the guide channel 115, the inner wall of the guide channel 1151 is atomized and then pushed back to the central position of the dust removing channel 114 by the airflow, so that the dust removing effect is further improved, and the impurities cannot enter the exhaust channel 113 along the guide channel 115.

The guide vane 1100 may be an airfoil shape (shown in the figure), an arc shape, a broken line shape, a rectangle shape, or other regular or irregular shapes. In order to facilitate the arrangement of the dust exhaust port 112, in the embodiment, the shape of the diversion transition portion 34 is similar to or completely approximate to the shape of the diversion piece 1100, so that the airflow coming out of the dust removing channel 114 cannot change the airflow direction due to the change of the shape of the transition portion, thereby better playing a role of diversion.

In a preferred embodiment of the present invention, as shown in fig. 11, the guide vane 1100 has a wing-shaped vertical cross-section, and the guide vane 1100 includes an outer convex-shaped flow guide surface 1100-1 and a smoothly arranged flow guide surface 1100-2. The flow guide surface 1100-1 is smoothly and excessively connected with the flow guide surface 1100-2, the convex flow guide surface 1100-1 is a windward surface close to the dust exhaust channel, and compared with the plane, the convex flow guide surface 1100-1 further increases the resistance of airflow, so that impurities are as few as possible close to the flow guide channel 115. Meanwhile, the convex flow guide surface 1100-1 enables a high pressure area to be formed above the flow guide surface 1100-2 more easily, and the high pressure area between two adjacent flow guide surfaces 1100-1 has a certain repulsion function, so that impurities are kept at the center line position of the dust exhaust channel.

In the present invention, as shown in fig. 2 and 6, a current equalizer 3 for equalizing the air flow at the dust exhaust port 112 is installed on the upper side of each air filter element 11, the current equalizer 3 is configured as a tubular structure having a dust collecting channel, two sides of the dust collecting channel are dust collecting outlets, the radial cross-sectional area of the current equalizer 3 is reduced from the middle to two sides, the dust collecting channel is divided into a first channel 30 and a second channel 31 by a baffle 32, the middle of the baffle 32 is provided with a plurality of openings 33, the first channel 30 is communicated with the second channel 31 through the openings 33, two sides of the first channel 30 form a first dust collecting port 300, the openings 33 of the second channel 31 form a second dust collecting port 310, and the first dust collecting port 300 and the second dust collecting port 310 form a dust collecting outlet of the current equalizer 3.

Specifically, the inner space of the current equalizer 3 is divided into a first channel 30 and a second channel 31 by the baffle 32, which are convenient for air flow equalization, the baffle 32 is provided with an opening 33 for communicating the first channel 30 with the second channel 31, and the radial cross section of the current equalizer 3 is gradually reduced towards two sides by taking the baffle 32 as a center, that is, two side walls of the current equalizer 3 are arc-shaped, so as to prevent the inner wall of the current equalizer 3 from being greatly impacted by high wind speed. Because the dedusting filter screen 1 is longer, the flow equalizer 3 with equal proportion is also longer, in order to prevent the dust with weaker suction force in the middle from being exhausted unclean, two ends of the first channel 30 and the second channel 31 of the flow equalizer 3 are respectively provided with the first dust collecting port 300 and the second dust collecting port 310, so that the air containing impurities enters the first channel 30 through the dust exhausting port 112, the air close to two sides of the flow equalizer 3 is exhausted from the first dust collecting port 300, the air close to the middle part of the flow equalizer 3 enters the second channel 31 through the opening 33 and is exhausted from the second dust collecting port 310, and thus, the uniform distribution of the air containing impurities is ensured, as shown in fig. 12, a velocity field distribution simulation chart under the working condition that the air inlet speed is 5m/s, and after the flow equalizer is installed, the air flow at the dust exhausting port 112 is uniformly distributed, thereby improving the dedusting effect.

Two symmetrically arranged guide transition parts 34 extend inwards from one side of the flow equalizer 3, which is far away from the second channel 31, a gap is arranged between the two guide transition parts 34 to form a transition port 340, air containing impurities enters the first channel 30 through the transition port 340, the air close to two sides of the flow equalizer 3 is discharged from the first dust collecting port 300, and the air close to the middle part of the flow equalizer 3 enters the second channel 31 through the port 33 and is discharged from the second dust collecting port 310. The two diversion transition parts 34 are splayed, the second channel 31 comprises a V-shaped cavity 301 formed between the diversion transition parts 34 and the inner wall of the flow equalizer 3, the space of the second channel 31 is increased through the splayed transition parts, and the flow equalizing effect at the dust exhaust port 112 is further provided.

The flow guiding transition part 34 has an airfoil dust collecting surface 341, the airfoil dust collecting surface 341 is used for pushing dust from the dust removing channel 114 to the dust collecting channel, the shape of the airfoil dust collecting surface 341 is set to be convex, this is because wind can locally generate vortex on the dust collecting surface when passing through the dust collecting surface of the concave structure, block and change the flow direction of wind, be unfavorable for the flow guiding effect of the dust collecting surface to the air current, the vortex influence brought when the flow guiding transition part 34 is cut down by the airfoil dust collecting surface 341 adopting convex shape, the flow guiding effect of the airfoil dust collecting surface 341 is accelerated, and the smooth air current carrying dust is rapidly conveyed to the dust collecting channel for flow equalization and dust discharge.

In addition, the width of the opening 33 on the baffle 32 is larger than that of the transition port 340, so as to ensure that the air containing impurities discharged from the dust removing channel 114 can be completely sucked into the flow equalizer 3. Meanwhile, the cross-sectional area of the second channel 31 is larger than that of the first channel 30, so that the airflow at the outlet of the dust removing channel 114 is more uniform. The space of the first passage 30 is relatively small, and the length of the opening 33 is increased, so that dust discharging resistance is reduced, the effect of uniform dust discharging is achieved, and the problem that the dust discharging port 112 is easy to block due to long-term use is solved. And the flow equalizer 3 is integrally formed in the whole structure, so that the cost is lower.

In this embodiment, the dust removal operation principle of the air cleaner is as follows: when there is a certain speed of air flow in the outside air, the air inlet 111 faces the air flowing direction, so that the outside air enters the air filter element 11 from the air inlet 111. The external air first enters the dust removing passage 114, and impurities are present in the air entering the dust removing passage 114. Because each guide plate 110 has a certain inclination angle, it will generate a certain resistance to the airflow, so that the wall pressure in the dust removing channel 114 is increased, i.e. the static pressure is increased, and the central position of the airflow in the dust removing channel 114 is relatively fast in flow speed and small in static pressure. Therefore, the impurities such as particles, flocs, water drops, etc. entrained by the airflow of the dust removing channel 114 will flow along the central line of the dust removing channel 114 under the action of the wall pressure. And under the action of unequal static pressure, the impurities are easier to approach the direction of the central line of the dust removal channel 114, so that the impurities are more favorable for moving to the dust removal channel, enter the flow equalizer 3 from the dust removal port 112, flow equalize and then are discharged.

Meanwhile, in the dust removing passage 114, when passing through the position of the air guide passage 115, a part of air enters the air guide passage 115 and flows out from the air exhaust passage 113, and the part of air is clean air. The specific principle is as follows: when the airflow enters the guide passage 115 from the dust removing passage 114, part of the energy is lost, so that the airflow speed in the guide passage 115 is slower than that in the dust removing passage 114. Therefore, when the air flow containing the impurities in the dust removing channel 114 approaches the guide flow channel 115, since the attraction force at the guide flow channel 115 is small and the inertia of the movement of the impurities cannot be overcome, that is, the air flow velocity in the dust removing channel 114 is greater than the air flow velocity in the guide flow channel 115, the impurities cannot enter the guide flow channel 115, and thus the clean air and the impurities can be separated by themselves. The ratio or difference between the airflow speed in the flow guide channel 115 and the airflow speed in the dust removing channel 114 can be adjusted by adjusting the difference between the cross sections of the two channels and adding a power source such as a fan at the channel opening.

Therefore, the clean air without impurities can enter the exhaust channel 113 from the flow guide channel 115, and the impurities such as particulate matters, floating matters and the like are gathered to the dust exhaust channel along with the airflow of the dust removal channel 114 and then enter the flow equalizer 3 from the dust exhaust port 112 to be equalized and then exhausted, so that the clean air and the impurities are separated by the air filter element 11. Provide clean air through the device steadily, both avoided the impurity of gathering to block up the device, saved the trouble of artifical clearance air dust collector again, practiced thrift manpower, material resources and financial resources to can guarantee to normally work for a long time under the condition of not clearing up.

In the invention, as shown in fig. 5, the dust removing filter screen 1 is fixedly connected with the outer frame 2, the two sides of the outer frame 2 are provided with dust collecting cavities 4, and the dust collecting cavities 4 are communicated with the dust collecting outlet. Wherein the dust collecting outlets are a first dust collecting port 300 and a second dust collecting port 310. The two dust collecting cavities 4 are communicated through a dust collecting pipe 5, and the dust collecting pipe 5 is used for connecting an induced draft fan. Provide outside effort for two collection dirt cavities 4 through the draught fan, for guaranteeing that collection dirt is convenient, communicate two collection dirt cavities 4 through dust collecting tube 5, wherein dust collecting tube 5 can be located multiple positions such as the filter screen 1 outside of removing dust, middle part, no longer regard as the injecing here.

In the present invention, it is preferable that the horizontal section of the air cleaner is a plane, a curved surface, or a circle.

Specifically, as shown in fig. 13, when the air cleaner is in a planar shape, that is, the surface of the dust removing filter net 1 is also flat, that is, the length of each air filter element 11 is ensured to be uniform, so that the maximum area of air intake can be realized, and the dust removing efficiency is relatively high. When the air cleaner is the curved surface, that is to say that dust removal filter screen 1 surface is the curved surface, that is to say that the installation height of every air filter 11 is inconsistent, wherein the length of baffle 10 is also inconsistent, consequently, can make dust removal filter screen 1 become the shape such as cambered surface, semicircle that have different radians, wherein the frame 2 of fixed dust removal filter screen 1 also cooperates the change of dust removal filter screen 1 to carry out the shape change to satisfy the demand of different installation scenes.

Of course, as shown in fig. 14, the air cleaner may also be cylindrical, that is, the air cleaner may rotate around a central line of the planar air cleaner to form a cylinder, the dust collecting cavities 4 on both sides are communicated with each other through the dust collecting pipes 5, the dust collecting pipes 5 are fixed on the outer frame 2 through the mounting frame 6 or are fixed with each partition board 10 and each dust collecting pipe 5, at this time, the air inlets 111 are circumferentially disposed at the outer side of the air cleaner, the flowing air is introduced through the air inlets 111, the static pressure on both sides of the flow guide plate 110 is increased through the flow blocking structure 12, so that the impurities can move along the central line direction, the air flow containing the impurities enters the flow equalizer 3 through the dust exhaust channel and the dust exhaust port 112 to equalize, the air containing the impurities is sucked out by the suction force of the fan, and the clean air is exhausted from one side through the air exhaust channel 113, thereby achieving the air dust removal effect. The air inlet 111 of the cylindrical air filter is designed annularly, so that circumferential multi-angle air inlet can be realized, the dust collecting port and the air outlet are located at two ends of the cylinder, the relative area is small, clean air is introduced into a required space by the connecting pipeline conveniently, and therefore the control on dust and clean air flowing direction is facilitated. In addition, a plurality of air cleaners may be combined and arranged to form different shapes to increase the ventilation amount. It should be noted that the above combinations are all equivalent changes or modifications made within the technical spirit of the scope of the present invention, and all fall within the scope of the present invention.

In the present invention, in the case of the present invention,

the working principle is as follows: the air cleaner of this scheme of utilization is when carrying out air dust removal, introduce the external air that flows from air intake 111, the streamlined lug that has the arcwall face produces certain resistance to the air of high-speed inflow, streamlined design can do benefit to and lead to wind, even the both sides that get into in the dust removal passageway 114 produce the static pressure, because the pressure of both sides is great, thereby make the dust especially tiny dust of tiny particle or the less impurity of proportion (especially plant debris, catkin, flotage such as poplar wadding) can change and move towards dust removal passageway 114 central direction.

After the air flows into the dust removing channel 114, the dust is removed, the clean air enters the air exhaust channel 113 along the flow guide channel 115 and is exhausted, and the air containing impurities enters the flow equalizer 3 through the dust exhaust port 112.

Under the action of a fan, acting force for sucking out is provided in the dust collection cavity 4 and the flow equalizer 3 communicated with the dust collection cavity 4, air containing impurities enters the first channel 30 through the dust exhaust port 112 and along the transition port 340, airflow at the dust exhaust port 112 uniformly enters the first channel 30, air close to two sides of the flow equalizer 3 enters the dust collection cavity 4 through the first dust collection port 300, air close to the middle of the flow equalizer 3 enters the second channel 31 through the opening 33 and enters the dust collection cavity 4 through the second dust collection port 310, and finally air in the dust collection cavity 4 is sucked out by the fan.

So, so that the separation of clean air and impurity has been realized, clean air is provided to the equipment compartment steadily, and the impurity of having avoided gathering blocks up air dust collector to can guarantee to normally work for a long time under the condition of not clearing up, have stronger automatically cleaning, non-maintaining ability.

The above description is intended to describe in detail the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the claims of the present invention, and all equivalent changes and modifications made within the technical spirit of the present invention should fall within the scope of the claims of the present invention.

Claims (10)

1. The self-cleaning air filter is characterized by comprising a dust removal filter screen (1) and an outer frame (2) used for fixing the dust removal filter screen (1), wherein the dust removal filter screen (1) comprises a plurality of groups of air filter elements (11) which are separated from air impurities and are arranged in parallel, the air filter elements are of the same structure and are used for separating the air impurities, an air inlet (111) and a dust exhaust port (112) are formed in two ends of each air filter element (11), an air exhaust channel (113) is formed between each air filter element (11) and the corresponding partition board (10), a flow blocking structure (12) is arranged at one end, close to the air inlet (111), of each partition board (10), and the flow blocking structures (12) are streamline bumps which are symmetrically arranged relative to the corresponding partition boards (10) and are provided with arc surfaces;

every current equalizer (3) that are used for balanced dust exhaust mouth (112) to locate the air current are all installed to the upside of air filter (11), current equalizer (3) set up the tubular structure for having the collection dirt passageway, the both sides of collection dirt passageway are the collection dirt export, frame (2) both sides are equipped with collection dirt cavity (4), the collection dirt export with collection dirt cavity (4) intercommunication, two collection dirt cavity (4) are through dust-collecting tube (5) intercommunication.

2. The self-cleaning air filter of claim 1, wherein the radial cross-sectional area of the flow equalizer (3) decreases from the middle to both sides, the dust collecting channel is divided into a first channel (30) and a second channel (31) by a baffle (32), the baffle (32) is provided with a plurality of openings (33) in the middle, the first channel (30) is communicated with the second channel (31) through the openings (33), the first dust collecting port (300) is formed on both sides of the first channel (30), the second dust collecting port (310) is formed on the opening (33) of the second channel (31), and the first dust collecting port (300) and the second dust collecting port (310) form the dust collecting outlet of the flow equalizer (3).

3. The self-cleaning air filter of claim 2, wherein two symmetrically arranged flow guiding transition parts (34) extend inwards from one side of the flow equalizer (3) away from the second channel (31), a gap between the two flow guiding transition parts (34) forms a transition port (340), the transition port (340) is communicated with the dust exhaust port (112), air containing impurities enters the first channel (30) through the dust exhaust port (112) and the transition port (340), air near two sides of the flow equalizer (3) is exhausted from the first dust collection port (300), and air near the middle of the flow equalizer (3) enters the second channel (31) through the opening (33) and is exhausted from the second dust collection port (310).

4. A self-cleaning air cleaner as claimed in claim 3, wherein two of said flow-guiding transitions (34) are splayed, and said first channel (30) comprises a V-shaped cavity (301) formed between each transition and the inner wall of the flow equalizer (3).

5. A self-cleaning air cleaner as recited in claim 3, wherein said opening (33) is larger in diameter than said transition port (340).

6. A self-cleaning air cleaner as claimed in claim 1, wherein the radial cross-sectional area of the flow-obstructing structure (12) decreases from the dust outlet (112) to the air inlet (111), and the radial cross-section of the flow-obstructing structure (12) is peach-shaped.

7. A self-cleaning air cleaner according to claim 1, wherein the radial cross-section of the flow-obstructing structure (12) is convexly or concavely curved.

8. The self-cleaning air cleaner as claimed in claim 1, wherein the air filter element (11) comprises two symmetrically arranged baffles (110) with the same structure, and the distance between the two baffles (110) and the partition (10) is gradually increased from the air inlet (111) to the dust exhaust port (112).

9. The self-cleaning air cleaner as claimed in claim 8, wherein a dust removing channel (114) is formed between two of the guide plates (110), the guide plates (110) comprise a plurality of guide plates (1100) arranged in parallel and at intervals, a guide channel (115) is formed between adjacent guide plates (1100), flowing air enters the dust removing channel (114) from the air inlet (111), gas containing impurities is discharged through the dust discharging port (112), and clean air enters the air discharging channel (113) along the guide channel (115) to be discharged.

10. A self-cleaning air cleaner as recited in claim 1, wherein the air cleaner is planar, curved or circular in horizontal cross-section.

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