CN219421408U - Dust removal assembly and heat abstractor with same - Google Patents

Abstract

The utility model relates to a dust removing assembly and a heat dissipating device with the same, comprising an inner filter screen, an outer filter screen, a shell, a dust removing fan and a moving mechanism, wherein a long-strip-shaped suction port part is arranged on a first plate, a long-strip-shaped mouthpiece part is arranged on a second plate, at least part of the dust removing fan is arranged in the shell, the suction port part faces to the inner filter screen, the mouthpiece part faces to the outer filter screen, the suction port part and the mouthpiece part are respectively communicated with a containing cavity to form an air channel, and the dust removing fan is used for generating negative pressure suction in the air channel, sucking dust on the inner filter screen into the suction port part and blowing out the dust from the mouthpiece part. When the dust removing fan works, fine dust on the inner filter screen is sucked from the suction port part and blown out from the blowing port part along with the negative pressure suction force of the dust removing fan, and the dust removing fan blows away insects and impurities attached to the outer filter screen, and simultaneously cleans the inner filter screen and the outer filter screen, so that the air permeability of the outer filter screen and the inner filter screen is ensured, and the interference is avoided or the heat radiation effect of the heat radiation device is reduced.

Description

Dust removal assembly and heat abstractor with same

Technical Field

The utility model relates to the field of communication basic equipment, in particular to a dust removing assembly and a heat radiating device with the same.

Background

G base station distribution density is increased, permanent base station site selection is difficult, and the existing method is widely used for replacing a permanent site machine room with an external communication cabinet of a user. The outdoor communication cabinet has the heat island phenomenon in the cabinet, and solar radiation's heat also can be absorbed, leads to outdoor communication cabinet inside high temperature, influences equipment normal operating. The space limitation of the outdoor communication cabinet, and the refrigerating capacity of conventional cooling equipment such as cabinet air conditioner, heat exchange or through air heat exchange equipment is obviously insufficient. The insufficient wind pressure of the cooling devices can not timely eliminate the heat island, so that high-temperature alarms of the communication cabinet frequently occur, which seriously puzzles communication infrastructure operators. At present, a novel ventilation device matched with a communication cabinet tends to be large. The utility model discloses an outdoor cabinet ventilation and heat dissipation device as disclosed in Chinese patent No. 214757597U, which actively pushes cold and hot air exchange circulation inside and outside a cabinet through a box-shaped device with a heat isolation layer, an inlet-outlet air duct dislocation structure and an active ventilation fan, wherein the box-shaped device is arranged at the upper part of a cabinet body, the front part of the box-shaped device is an air inlet, the rear part of the box-shaped device is an air outlet, the two sides of the bottom of the box-shaped device are downward air supply openings, the air outlet is provided with a rain-proof shutter, an insect-proof net is arranged at the air outlet, and an air inlet duct and an air outlet duct in the box-shaped device are mutually isolated and are subjected to heat insulation treatment.

However, the ventilation and heat dissipation device still has certain defects, more dust exists in the environment of the outdoor communication cabinet, the shutter and the air filter can block the dust, but the air filter can be blocked after long-term use, and the air filter is arranged at the air inlet, so that the heat dissipation effect can be influenced after the air filter is blocked. Therefore, it is necessary to design a heat sink with dust removal function.

Disclosure of Invention

The utility model aims to overcome the defect that a ventilation and heat dissipation device in the prior art lacks effective dust removal, and further provides a dust removal assembly and a heat dissipation device with the dust removal assembly.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a dust removal subassembly, includes interior filter screen, outer filter screen, casing, dust removal fan and mobile mechanism, interior filter screen with outer filter screen is parallel to each other, the casing is located interior filter screen with outer filter screen is between, the casing includes first board and the second board that is parallel to each other, and connects the curb plate of first board and second board, be equipped with rectangular suction opening portion on the first board, be equipped with rectangular mouthpiece portion on the second board, have a appearance chamber in the casing, at least part dust removal fan sets up in the appearance chamber, suction opening portion orientation interior filter screen, mouthpiece portion orientation outer filter screen, suction opening portion and mouthpiece portion respectively with hold the chamber intercommunication forms the wind channel, dust removal fan is used for producing negative pressure suction in the wind channel, will interior filter screen dust suction inlet opening portion, and follow the mouthpiece portion blows out; the moving mechanism drives the shell to move along the direction parallel to the inner filter screen and the outer filter screen.

Preferably, the suction port portion includes a first convex plate and a second convex plate protruding toward the inner filter screen, the first convex plate and the second convex plate being parallel to each other, or the outer sides of the first convex plate and the second convex plate being close to each other to form a splayed shape.

Preferably, the mouthpiece part includes a third convex plate and a fourth convex plate protruding toward the outer filter screen, and the outer sides of the third convex plate and the fourth convex plate are close to each other to form a splayed shape.

Preferably, a first partition board is arranged in the shell, the first partition board is arranged along the extending direction of the suction port part and divides the accommodating cavity into a negative pressure dust collection cavity and a high pressure dust blowing cavity, the negative pressure dust collection cavity is communicated with the suction port part, the high pressure dust blowing cavity is communicated with the blowing port part, at least part of the dust removing fan is positioned in the high pressure dust blowing cavity, and an air outlet of the dust removing fan is positioned in the high pressure dust blowing cavity; and the first partition plate is provided with a through hole, and an air inlet of the dust removal fan is aligned with the through hole and communicated with the negative pressure dust collection cavity so as to generate negative pressure suction in the negative pressure dust collection cavity.

Preferably, the number of the dust removing fans is greater than one, a plurality of second partition boards are arranged in the high-pressure dust blowing cavity, one of the second partition boards and the shell form a cavity for accommodating one dust removing fan, and/or adjacent second partition boards form a cavity for accommodating one dust removing fan.

Preferably, the upper end of the second partition plate is close to the mouthpiece part, the lower end of the second partition plate corresponds to an air outlet of the dust removal fan, the second partition plate, the air outlet and the mouthpiece part form an air outlet channel, and the second partition plate is obliquely arranged so that the size of the air outlet channel at the air outlet is smaller than the size of the air outlet channel at the mouthpiece part.

Preferably, the dust removing fan comprises an impeller part and a rotation control part, wherein the impeller part is positioned in the accommodating cavity, and the rotation control part is fixed on the outer side wall of the shell and controls the impeller part to rotate in the accommodating cavity.

In order to achieve the above purpose, the present utility model further adopts the following technical scheme:

the utility model provides a heat abstractor, includes the casing, be equipped with radiator unit and foretell dust removal subassembly in the casing, the casing includes inboard thermovent and outside towards the filter port, dust removal subassembly is located the upper portion of casing, outer filter screen sets up in the filter port, radiator unit is located the lower part of casing, with the thermovent corresponds.

Preferably, the heat dissipation assembly comprises a heat dissipation fan;

the casing is internally provided with a third baffle plate, the third baffle plate is positioned between the dust removing assembly and the heat radiating assembly, the third baffle plate and the heat radiating opening are provided with horizontal gaps, and the filtering opening, the outer filtering net, the inner filtering net, the horizontal gaps, the heat radiating fan and the heat radiating opening form a heat radiating channel.

Preferably, a baffle is arranged at the outer side of the filtering port, a gap is formed between the baffle and the outer filter screen, the baffle is provided with a plurality of arc-shaped shielding plates with downward openings, a vent is arranged between the arc-shaped shielding plates and the baffle, and the vent is communicated with the gap and the outer filter screen;

and a dust leakage groove is arranged between the lower end of the baffle and the outer wall of the shell, and the dust leakage groove is communicated with the gap.

Compared with the prior art, the utility model has the beneficial effects that:

the dust removal subassembly that provides in the above-mentioned technical scheme has set up two-layer filter screen, outer filter screen mainly is used for stopping insect and impurity, interior filter screen mainly is used for filtering the dust in the air, dust, insect and impurity in the outdoor communication rack that can significantly reduce get into, simultaneously, set up dust removal fan between interior filter screen and outer filter screen, dust removal fan and the suction inlet portion and the cooperation of mouthpiece portion on the casing, form the wind channel, dust removal fan during operation, inhale the tiny dust on the interior filter screen from suction inlet portion, follow dust removal fan's negative pressure suction, blow off from the mouthpiece portion, blow to outer filter screen, blow away outer filter screen on the insect and the impurity of adhesion, clean interior filter screen and outer filter screen simultaneously, guaranteed the air permeability of outer filter screen and interior filter screen, avoid interfering or reduce heat abstractor the radiating effect. The moving mechanism drives the shell to move along the direction parallel to the inner filter screen and the outer filter screen, so that the long-strip-shaped suction opening part and the long-strip-shaped blowing opening part correspond to most areas of the inner filter screen and the outer filter screen as much as possible, and most accumulated ash and sundries on the inner filter screen and the outer filter screen are removed.

The heat abstractor who provides in the above-mentioned technical scheme, including radiator unit and foretell dust removal subassembly, and radiator unit and dust removal subassembly distributes from top to bottom, radiator unit during operation, outside air is from the filter port, outside filter screen, interior filter screen, radiator unit in proper order, get into outdoor communication rack by the thermovent in, through multilayer filtration, and nonlinear heat dissipation channel, most dust and debris in the outside air all are separated, both guaranteed the inside heat dissipation of outdoor communication rack, also avoid bringing the external pollution into the rack in, guaranteed the normal operating environment of rack internal equipment.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a dust removing assembly according to an embodiment of the present utility model.

Fig. 2 is a schematic view of a dust removing assembly according to another embodiment of the present utility model.

Fig. 3 is a schematic cross-sectional view of a housing and a dust removing fan according to an embodiment of the present utility model.

Fig. 4 is a schematic cross-sectional view of another angle of the housing and the dust removing fan according to the embodiment of the present utility model.

Fig. 5 is a schematic structural diagram of a heat dissipating device according to an embodiment of the utility model.

Fig. 6 is a schematic view of another angle of the heat dissipating device according to an embodiment of the present utility model.

Fig. 7 is a schematic diagram of an internal structure of a heat dissipating device according to an embodiment of the utility model, which shows heat dissipating channels.

Fig. 8 is a schematic diagram of an internal structure of a heat dissipating device according to an embodiment of the present utility model, which shows a position of a dust removing component in the heat dissipating device.

Reference numerals illustrate:

10. an inner filter screen; 20. an outer filter screen; 30. a housing; 31. a suction part; 311. a first convex plate; 312. a second convex plate; 32. a blow-out part; 321. a third convex plate; 322. a fourth convex plate; 33. a first separator; 331. a through hole; 34. a negative pressure dust collection cavity; 35. a high-pressure dust blowing cavity; 36. a second separator; 40. a dust removal fan; 41. an impeller section; 411. an air inlet; 412. an air outlet; 42. a rotation control unit; 50. a moving mechanism; 60. a housing; 61. a heat radiation port; 62. a filtering port; 621. a baffle; 622. an arc-shaped cover plate; 623. a vent; 624. a dust leakage groove; 63. a third separator; 631. a horizontal gap; 70. a heat radiation fan.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 4, the embodiment of the present utility model provides a dust removing assembly, which includes an inner filter screen 10, an outer filter screen 20, a housing 30, a dust removing fan 40 and a moving mechanism 50, wherein the inner filter screen 10 and the outer filter screen 20 are parallel to each other, the outer filter screen 20 is communicated with the external environment, and functions mainly to block insects and impurities, and the inner filter screen 10 is mainly used for filtering dust in the air, so that the pores of the inner filter screen 10 are smaller than those of the outer filter screen 20, thereby forming a double-layer filter, and the dust, insects and impurities entering an outdoor communication cabinet can be greatly reduced; the shell 30 is located between the inner filter screen 10 and the outer filter screen 20, the shell 30 comprises a first plate and a second plate which are parallel to each other, and a side plate which is connected with the first plate and the second plate, the first plate is provided with a vertically arranged long strip-shaped suction port part 31, the second plate is provided with a vertically arranged long strip-shaped blowing port part 32, a cavity is formed in the shell 30, at least part of the dust removing fan 40 is arranged in the cavity, the suction port part 31 faces the inner filter screen 10, the blowing port part 32 faces the outer filter screen 20, the suction port part 31 and the blowing port part 32 are respectively communicated with the cavity to form an air duct, the dust removing fan 40 is used for generating negative pressure suction in the air duct, when the dust removing fan 40 works, tiny dust on the inner filter screen 10 is sucked from the suction port part 31 and is blown out from the blowing port part 32 along with the negative pressure suction force of the dust removing fan 40, insects and impurities attached to the outer filter screen 20 are blown away, meanwhile, the inner filter screen 10 and the outer filter screen 20 are cleaned, the air permeability of the inner filter screen 20 and the heat dissipation effect of the heat dissipation device is avoided or reduced.

In order to ensure the airflow velocity during blowing and sucking, the suction port part 31 and the blowing port part 32 are long and narrow structures and only correspond to one row or one column of the inner filter screen 10 and the outer filter screen 20, so that the moving mechanism 50 drives the shell 30 to move along the direction parallel to the inner filter screen 10 and the outer filter screen 20, so that the long suction port part 31 and the blowing port part 32 correspond to most areas of the inner filter screen 10 and the outer filter screen 20 as much as possible, and most accumulated ash and sundries on the inner filter screen 10 and the outer filter screen 20 are removed. In this embodiment, if the suction port portion 31 and the mouthpiece portion 32 are of a laterally arranged elongated structure, the movement direction of the movement mechanism 50 is vertical and parallel to the directions of the inner filter screen 10 and the outer filter screen 20, and if the suction port portion 31 and the mouthpiece portion 32 are of a vertically arranged elongated structure, the movement direction of the movement mechanism 50 is horizontal and parallel to the directions of the inner filter screen 10 and the outer filter screen 20, so that the suction port portion 31 and the mouthpiece portion 32 can cover most areas of the inner filter screen 10 and the outer filter screen 20. The moving mechanism 50 may be a conventional device, such as a motor matched with a sliding rail, or a motor matched with a chain, or other conventional structures, and can drive the housing 30 and the dust removing fan 40 thereon to move, which is not described herein.

Specifically, as shown in fig. 1, the suction port portion 31 includes a first convex plate 311 and a second convex plate 312 protruding toward the inner filter screen 10, and the first convex plate 311 and the second convex plate 312 are parallel to each other, so that the suction port portion 31 is square, or the outer sides of the first convex plate 311 and the second convex plate 312 are close to each other to form a splayed shape, and the width of the outer end of the suction port portion 31 is smaller than the width of the inner end, which is advantageous for improving the dust collection effect. And the first convex plate 311 and the second convex plate 312 bring the opening of the suction port portion 31 closer to the inner filter screen 10, so that the accumulated ash on the inner filter screen 10 more easily enters the inner cavities of the suction port portion 31 and the housing 30.

Specifically, as shown in fig. 2, the mouthpiece 32 includes a third convex plate 321 and a fourth convex plate 322 protruding toward the outer filter screen 20, the outer sides of the third convex plate 321 and the fourth convex plate 322 are close to each other to form a splayed shape, the width of the outer end of the mouthpiece 32 is smaller than the width of the inner end, so that the airflow velocity of the airflow exiting from the mouthpiece 32 is higher, the attachments on the outer filter screen 20 can be blown off more forcefully, meanwhile, the negative pressure airflow at this time carries the dust particles sucked from the inner filter screen 10, the higher airflow velocity can avoid the dust particles from settling, and the dust particles are more flushed out of the outer filter screen 20 along with the negative pressure airflow, and the dust removing effect is better.

Preferably, in order to raise the negative pressure suction force of the dust removing fan 40, as shown in fig. 3, a first partition 33 is provided in the housing 30, the first partition 33 is provided along the extending direction of the suction port portion 31, and divides the cavity into a negative pressure dust collecting cavity 34 and a high pressure dust blowing cavity 35, the negative pressure dust collecting cavity 34 is communicated with the suction port portion 31, the high pressure dust blowing cavity 35 is communicated with the blowing port portion 32, at least part of the dust removing fan 40 is located in the high pressure dust blowing cavity 35, and an air outlet 412 of the dust removing fan 40 is located in the high pressure dust blowing cavity 35; and the first partition 33 is provided with a through hole 331, the air inlet 411 of the dust removing fan 40 is aligned with the through hole 331 and is communicated with the negative pressure dust collection cavity 34, so as to generate negative pressure suction in the negative pressure dust collection cavity 34, suck accumulated dust on the inner filter screen 10 from the suction port part 31, enter the negative pressure dust collection cavity 34, then enter the dust removing fan 40, and flow out from the air outlet 412, enter the high pressure dust blowing cavity 35, the high pressure dust blowing cavity is communicated with the blowing port part 32, and air flow directly carries the accumulated dust to blow onto the outer filter screen 20. The first separator 33 is disposed in a direction corresponding to the extending directions of the suction port portion 31 and the mouthpiece portion 32, and the path of the air passage at the time of dust removal is shown by the arrows in fig. 3 and 4.

Preferably, in order to improve the dust removing efficiency, the number of the dust removing fans 40 is greater than one, and the dust removing fans 40 are arranged in a manner corresponding to the extending directions of the suction port portion 31 and the mouthpiece portion 32, that is, when the suction port portion 31 and the mouthpiece portion 32 are vertically arranged in a long strip-shaped structure, the plurality of dust removing fans 40 are arranged up and down, and when the suction port portion 31 and the mouthpiece portion 32 are laterally arranged in a long strip-shaped structure, the plurality of dust removing fans 40 are arranged left and right. The high-pressure dust blowing chamber 35 is provided with a plurality of second partition plates 36, wherein one second partition plate 36 forms a chamber for accommodating one dust removing fan 40 with the housing 30, and/or adjacent second partition plates 36 form a chamber for accommodating one dust removing fan 40.

As shown in fig. 4, in the case of a vertically arranged elongated structure of the suction port portion 31 and the mouthpiece portion 32, two dust removal fans 40 are arranged up and down, and the number of the second partition plates 36 is two and arranged up and down; the upper second partition 36 forms a chamber with the lower second partition 36 for accommodating one dust removing fan 40, and the lower second partition 36 forms a chamber with the bottom plate of the housing 30 for accommodating the other dust removing fan 40. The relatively small chamber may increase the flow rate of the airflow and reduce the dust particles settling in the housing 30.

In order to guide the air flow flowing out from the air outlet 412 of the dust removing fan 40, the upper end of the second partition plate 36 is close to the air outlet 32, the lower end corresponds to the air outlet 412 of the dust removing fan 40, the second partition plate 36 forms an air outlet duct with the air outlet 412 and the air outlet 32, and the second partition plate 36 is inclined so that the size of the air outlet duct at the air outlet 412 is smaller than the size of the air outlet duct at the air outlet 32, thereby guiding the air flow to the air outlet 32.

The dust removing fan 40 comprises an impeller part 41 and a rotation control part 42, the impeller part 41 is positioned in the containing cavity, the rotation control part 42 is fixed on the outer side wall of the shell 30, the impeller part 41 is controlled to rotate in the containing cavity so as to further reduce the space of the cavity and improve the flow speed of air flow, meanwhile, the impeller part 41 and the rotation control part 42 are conveniently isolated, tiny dust is reduced to enter the rotation control part 42, and the rotation control part 42 can be better protected.

As shown in fig. 5 to 8, the present utility model further provides an embodiment, and discloses a heat dissipating device, which includes a housing 60, wherein a heat dissipating component and a dust removing component of the above embodiment are disposed in the housing 60, the housing 60 includes a heat dissipating port 61 facing inward and a filtering port 62 facing outward, the dust removing component is disposed at an upper portion of the housing 60, the outer filter screen 20 is disposed in the filtering port 62, and the heat dissipating component is disposed at a lower portion of the housing 60 and corresponds to the heat dissipating port 61.

The radiating component and the dedusting component are distributed up and down, when the radiating component works, external air sequentially passes through the outer filter screen 20, the inner filter screen 10 and the radiating component from the filter port 62, enters the outdoor communication cabinet through the radiating port 61, is subjected to multi-layer filtration, and is in a nonlinear radiating channel, most of dust and sundries in the external air are separated, so that the internal heat dissipation of the outdoor communication cabinet is ensured, the external pollution is prevented from being brought into the cabinet, and the normal operation environment of equipment inside the cabinet is ensured.

The heat dissipation assembly and the dust removal assembly distributed up and down have another function, when the heat dissipation device is installed on the outdoor communication cabinet, the heat dissipation assembly and the heat dissipation port 61 can be located at the opposite lower ends of the outdoor communication mechanism, the air port of the outdoor communication mechanism is generally located at the top, and heat is mainly concentrated in the middle and the top, so that outdoor air with low temperature flowing out of the heat dissipation assembly and the heat dissipation port 61 can push the air outlet upwards, and heat islands are timely eliminated.

Preferably, as shown in fig. 7, the heat dissipating assembly includes a heat dissipating fan 70; the casing 60 has a third partition 63 therein, the third partition 63 is located between the dust removing assembly and the heat radiating assembly, and the third partition 63 has a horizontal gap 631 with the heat radiating port 61, and the filter port 62, the outer filter screen 20, the inner filter screen 10, the horizontal gap 631, the heat radiating fan 70 and the heat radiating port 61 form a heat radiating channel, the path of which is shown by arrows in fig. 7. It should be noted that, since the paths of the heat dissipation channel and the dust removal air channel are opposite, the dust removal fan 40 and the heat dissipation fan 70 do not work simultaneously, i.e. when the dust removal fan 40 works, the heat dissipation fan 70 does not work, and the air flow is from inside to outside; when the heat radiation fan 70 is operated, the dust removal fan 40 is not operated, and the air flow is from outside to inside.

Preferably, as shown in fig. 5, a baffle 621 is arranged at the outer side of the filtering opening 62, a gap is formed between the baffle 621 and the outer filter screen 20, a plurality of arc-shaped cover plates 622 with downward openings are arranged on the baffle 621, a vent 623 is arranged between the arc-shaped cover plates 622 and the baffle 621, the vent 623 is communicated with the gap and the outer filter screen 20, and the arc-shaped cover plates 622 have the following functions: the rainwater can be prevented from entering the filter screen during rainfall, and the rainwater is mixed with and condensed with attachments on the outer filter screen 20, so that the difficulty of blowing off is increased; the more tortuous radiating air duct can be formed, and sundries are reduced from entering the radiating device; when the dust is removed, the dust and sundries can be properly blocked after being blown out of the outer filter screen 20, so that the influence on passers-by and nearby environments caused by random drifting of the accessory crops can be avoided. Preferably, a dust leakage groove 624 is arranged between the lower end of the baffle 621 and the outer wall of the casing 60, and the dust leakage groove 624 is communicated with the gap, so that attachments blocked by the arc-shaped cover plate 622 can leak down from the dust leakage groove 624 and be concentrated below the heat dissipating device, thereby facilitating cleaning.

The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.

Claims (10)

1. The utility model provides a dust removal subassembly, its characterized in that includes interior filter screen, outer filter screen, casing, dust removal fan and mobile mechanism, interior filter screen with outer filter screen is parallel to each other, the casing is located interior filter screen with outer filter screen is between, the casing includes first board and the second board that is parallel to each other, and connects the curb plate of first board and second board, be equipped with rectangular suction opening portion on the first board, be equipped with rectangular mouthpiece portion on the second board, the casing has the appearance chamber in, at least part dust removal fan sets up in the appearance chamber, the suction opening portion is towards interior filter screen, mouthpiece portion is towards outer filter screen, suction opening portion and mouthpiece are respectively with appearance chamber intercommunication forms the wind channel, dust removal fan is used for producing negative pressure suction in the wind channel, will on the interior filter screen dust is inhaled suction opening portion, and is blown out from mouthpiece portion; the moving mechanism drives the shell to move along the direction parallel to the inner filter screen and the outer filter screen.

2. The dust removing assembly set forth in claim 1, wherein the suction port portion includes a first projection plate and a second projection plate projecting toward the inner filter screen, the first projection plate and the second projection plate being parallel to each other, or the outer sides of the first projection plate and the second projection plate being brought close to each other to form a splayed shape.

3. The dust removal assembly of claim 1, wherein said mouthpiece portion includes third and fourth bosses projecting toward said outer filter screen, said third and fourth bosses being splayed toward each other on outer sides thereof.

4. The dust removal assembly of claim 1, wherein a first partition is arranged in the shell and is arranged along the extending direction of the suction port part, the cavity is divided into a negative pressure dust collection cavity and a high pressure dust blowing cavity, the negative pressure dust collection cavity is communicated with the suction port part, the high pressure dust blowing cavity is communicated with the blowing port part, at least part of the dust removal fan is positioned in the high pressure dust blowing cavity, and an air outlet of the dust removal fan is positioned in the high pressure dust blowing cavity; and the first partition plate is provided with a through hole, and an air inlet of the dust removal fan is aligned with the through hole and communicated with the negative pressure dust collection cavity so as to generate negative pressure suction in the negative pressure dust collection cavity.

5. The dust removal assembly of claim 4, wherein the number of dust removal fans is greater than one, a plurality of second partitions are disposed in the high pressure dust blowing chamber, wherein one of the second partitions and the housing form a chamber for receiving one of the dust removal fans, and/or wherein adjacent ones of the second partitions form a chamber for receiving one of the dust removal fans.

6. The dust removal assembly of claim 5, wherein the second partition has an upper end adjacent the mouthpiece portion and a lower end corresponding to an air outlet of the dust removal fan, the second partition forming an air outlet duct with the air outlet and the mouthpiece portion, the second partition being inclined such that a dimension of the air outlet duct at the air outlet is smaller than a dimension of the air outlet duct at the mouthpiece portion.

7. The dust removal assembly of claim 1, wherein the dust removal fan comprises an impeller portion and a rotation control portion, the impeller portion being located in the cavity, the rotation control portion being secured to an outer sidewall of the housing and controlling rotation of the impeller portion in the cavity.

8. A heat dissipating device comprising a housing, wherein a heat dissipating component and a dust removing component according to any one of claims 1 to 7 are arranged in the housing, the housing comprises an inward heat dissipating port and an outward filter port, the dust removing component is positioned at the upper part of the housing, the outer filter screen is arranged in the filter port, and the heat dissipating component is positioned at the lower part of the housing and corresponds to the heat dissipating port.

9. The heat dissipating device of claim 8, wherein said heat dissipating component comprises a heat dissipating fan;

the casing is internally provided with a third baffle plate, the third baffle plate is positioned between the dust removing assembly and the heat radiating assembly, the third baffle plate and the heat radiating opening are provided with horizontal gaps, and the filtering opening, the outer filtering net, the inner filtering net, the horizontal gaps, the heat radiating fan and the heat radiating opening form a heat radiating channel.

10. The heat dissipating device of claim 8, wherein a baffle is provided outside the filter port, a gap is provided between the baffle and the outer filter screen, the baffle is provided with a plurality of arc-shaped cover plates with downward openings, a vent is provided between the arc-shaped cover plates and the baffle, and the vent is communicated with the gap and the outer filter screen;

and a dust leakage groove is arranged between the lower end of the baffle and the outer wall of the shell, and the dust leakage groove is communicated with the gap.