CN217235979U - Sand wind filtering device and air conditioner formed by same - Google Patents

Abstract

The utility model discloses a filter sand blown by wind's device, include: the filter screen assembly comprises two sealing plates and a plurality of filter plates parallel to the sealing plates, a filter chamber is formed between every two adjacent filter plates, and the filter plates are positioned between the two sealing plates; the top end of the filter screen component is sealed; the air inlet baffle is positioned at one end covering the filtering chamber and comprises at least one air inlet surface containing an air inlet hole, and the air inlet surface corresponds to one filtering chamber; the air outlet baffle is positioned at the other end of the covered filtering cavity and comprises at least one air outlet surface containing air outlet holes, and the air outlet surface corresponds to a filtering cavity which is not overlapped with the air inlet surface; and the sand collecting plate is positioned at the bottoms of the filter screen assembly, the air inlet baffle and the air outlet baffle. The utility model provides a pair of filter sand blown by the wind device and air conditioner that forms thereof can effectively get rid of impurity such as sand and dust salt fog in the air of access device, improves the operating efficiency of air conditioner.

Description

Sand wind filtering device and air conditioner formed by same

Technical Field

The utility model relates to a sand blown by the wind filters the field, especially relates to a device of filtering sand blown by the wind and air conditioner that forms thereof.

Background

With the development of equipment technology, various production equipment gradually starts to use air conditioners for cooling, and particularly, air inlet filter screens of air conditioners are very important for long-term use in areas with severe wind-sand and salt-mist environments, such as northwest deserts, coastal areas and the like, and the air inlet filter screens need to filter sand dust, salt mist and other impurities as far as possible to avoid the fin heat exchangers in the air conditioners from being filthy and corroded.

The air conditioner product that is used for at present cooling to equipment function is more single, can't effectively get rid of the fan salt fog in the air, just need take apart the panel after operation a period and carry out the sand blown by the wind and wash, and frequent shut down is washd and has seriously influenced the operating efficiency of air conditioner and corresponding equipment.

SUMMERY OF THE UTILITY MODEL

The present invention aims to solve one of the problems in the related art at least to a certain extent. Therefore, the utility model aims to provide a device for filtering wind-blown sand and an air conditioner formed by the device, which can effectively remove impurities such as sand dust, salt mist and the like in the air entering the device through three-layer filtering of a filter plate on the air inlet surface and an air outlet surface, thereby improving the operating efficiency of the air conditioner; and the structure is convenient to disassemble and clean, and the maintenance efficiency of the air conditioner is improved.

In order to achieve the above object, the utility model provides a device for filtering sand blown by the wind, include:

the filter screen assembly comprises two sealing plates and a plurality of filter plates parallel to the sealing plates, a filter chamber is formed between every two adjacent filter plates, and the filter plates are positioned between the two sealing plates; the top end of the filter screen component is sealed;

the air inlet baffle is positioned at one end covering the filtering chamber and comprises at least one air inlet surface comprising an air inlet hole, and the air inlet surface corresponds to one filtering chamber;

the air outlet baffle is positioned at the other end covering the filtering cavity and comprises at least one air outlet surface comprising an air outlet hole, and the air outlet surface corresponds to the filtering cavity which is not overlapped with the air inlet surface;

and the sand collecting plate is positioned at the bottoms of the filter screen assembly, the air inlet baffle and the air outlet baffle.

Furthermore, the shape of the air inlet surface is a groove which is concave to the filtering chamber.

Furthermore, the shape of the air outlet surface is a groove which is concave to the outer side of the filter chamber.

Further, the air inlet baffle includes air inlet face and first face that shelters from, air inlet face and first face that shelters from distribute in turn, just air inlet face and first face that shelters from with filter chamber one-to-one.

Further, the air outlet baffle comprises an air outlet face and a second shielding face, the air outlet face and the second shielding face are distributed alternately, the air outlet face and the second shielding face correspond to the filtering chambers one by one, and the air inlet face and the air outlet face correspond to different filtering chambers.

Furthermore, the first shielding surface and the air inlet surface are cambered surfaces which are concave to the filtering chamber, and the radius of the cambered surface of the first shielding surface is smaller than that of the cambered surface of the air inlet surface;

the second shielding surface and the air outlet surface are cambered surfaces which are concave towards the outer side of the filter chamber, and the radius of the cambered surface of the second shielding surface is smaller than that of the cambered surface of the air outlet surface.

Furthermore, the air inlet surface is an arc surface which is concave to the filtering chamber, and the first shielding surface is a plane which is vertical to the filtering plate;

the air outlet surface is an arc surface which is concave to the outer side of the filter chamber, and the second shielding surface is a plane which is perpendicular to the filter plate.

Furthermore, the sand collecting plate is connected with the air inlet baffle, the filter screen assembly and the air outlet baffle in a sealing manner.

Further, still including being located the roof on air inlet baffle, filter screen subassembly and air-out baffle top, the roof with air inlet baffle, filter screen subassembly and air-out baffle sealing connection.

An air conditioner comprises the device for filtering the wind-blown sand.

Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages: the air inlet surface comprises the air inlet hole, the air outlet surface comprises the air outlet, the air inlet surface and the air outlet surface have the function of filtering sand and dust, when air enters the filtering chamber through the air inlet surface, larger sand and dust particles are filtered and fall into the sand collecting plate below the air inlet baffle plate under the action of gravity, and the air inlet surface and the air outlet surface can be regarded as primary coarse filtering and mainly used for filtering the sand and dust particles; the air inlet surface and the air outlet surface correspond to different filtering chambers, so that air entering the filtering chambers cannot be blown out through the air outlet surface directly and can be blown out only after being filtered by at least one filter plate, the air passing through the air inlet surface is ensured to be filtered by the filter plates again, particles such as sand dust and salt mist filtered by the filter plates drop into a sand collecting plate below the filter screen assembly under the action of gravity, and the secondary fine filtering can be considered at the moment and is mainly used for filtering out the salt mist with smaller particles and even granular impurities such as oil stains; the air after twice filtration can meet the use requirements of the air conditioner, the air conditioner is prevented from being frequently disassembled to remove dust and sand, and the operation efficiency of the air conditioner is improved.

In the application, the sand collecting disc is positioned at the bottoms of the filter screen assembly, the air inlet baffle and the air outlet baffle, the top of the filter chamber is sealed, and two sealing plates are respectively arranged at two sides of the filter screen assembly, so that air in the filter chamber can only reach the filter chamber corresponding to the air outlet surface through the filter plates; prevent that the air that gets into and filter the chamber from revealing from side, bottom and top, influencing air-out efficiency. This application structure area is less, and collection sand table easily dismantles, is convenient for clearly collect the inside impurity of sand table, and air inlet baffle, filter screen subassembly and air-out baffle also easily dismantle, are convenient for wash the filter in the filter screen subassembly, have improved the maintainability ability of device.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

In the drawings:

FIG. 1 is an exploded view of the apparatus for filtering wind-blown sand in the present application;

FIG. 2 is a schematic view of the assembly of the apparatus for filtering sand blown in accordance with the present application;

FIG. 3 is a schematic view of the connection of a sand collection table and screen assembly according to the present application;

FIG. 4 is a schematic structural diagram of a sand collecting table in the present application;

reference numbers: 1. a top plate; 2. a screen assembly; 21. a filter plate; 22. a filtration chamber; 23. a sealing plate; 3. an air inlet baffle; 31. an air inlet surface; 32. a first shielding face; 4. an air outlet baffle plate; 41. an air outlet surface; 42. a second shielding face; 5. and (4) collecting a sand table.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "lateral", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present invention, but do not indicate that the referred mechanism or element must have a specific direction, and thus, should not be construed as limiting the present invention.

It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. The terms "first", "second", "third", etc. are only for convenience in describing the present technical solution, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, mechanisms, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

Referring to fig. 1-4, the present application provides a device for filtering wind-blown sand, comprising: the filter screen assembly 2 comprises two sealing plates 23 and a plurality of filter plates 21 parallel to the sealing plates 23, a filter chamber 22 is formed between adjacent filter plates 21, and the filter plates 21 are positioned between the two sealing plates 23; the top end of the filter screen component 2 is sealed; the air inlet baffle 3 is positioned at one end covering the filtering chamber 22 and comprises at least one air inlet surface 31 containing air inlet holes, and the air inlet surface 31 corresponds to one filtering chamber 22; the air outlet baffle 4 is positioned at the other end of the covered filter chamber 22 and comprises at least one air outlet surface 41 containing air outlet holes, and the air outlet surface 41 corresponds to the filter chamber 22 which is not overlapped with the air inlet surface 31; and the sand collecting table 5 is positioned at the bottoms of the filter screen assembly 2, the air inlet baffle and the air outlet baffle.

The air inlet surface 31 comprises the air inlet hole, the air outlet surface 41 comprises the air outlet, the air inlet surface 31 and the air outlet surface 41 have the function of filtering sand and dust, when air enters the filtering chamber 22 through the air inlet surface 31, larger-particle sand and dust are filtered and fall into the sand collecting plate 5 below the air inlet baffle plate 3 under the action of gravity, and the air inlet surface 31 and the air outlet surface 41 can be regarded as primary coarse filtering and mainly used for filtering the sand and dust with larger particles; the air inlet surface 31 and the air outlet surface 41 correspond to different filtering chambers 22 in the application, therefore, air entering the filtering chambers 22 cannot be directly blown out through the air outlet surface 41, and the air must be blown out after being filtered by at least one filter plate 21, so that the air passing through the air inlet surface 31 needs to be filtered by the filter plate 21 again, particles such as dust, salt mist and the like filtered by the filter plate 21 drop into the sand collecting disc 5 below the filter screen assembly 2 under the action of gravity, and the particles can be regarded as secondary fine filtering at the moment and are mainly used for filtering out the salt mist with smaller particles, even granular impurities such as oil stains and the like; the air after twice filtration can meet the use requirement of the air conditioner, the air conditioner is prevented from being frequently disassembled to remove dust and sand, and the operation efficiency of the air conditioner is improved.

In the application, the sand collecting plate 5 is positioned at the bottoms of the filter screen assembly 2, the air inlet baffle plate 3 and the air outlet baffle plate 4, the top of the filtering chamber 22 is sealed, and two sealing plates 23 are respectively arranged at two sides of the filter screen assembly 2, so that air in the filtering chamber 22 can only reach the filtering chamber 22 corresponding to the air outlet surface 41 through the filter plate 21; air entering the filter chamber 22 is prevented from leaking from the sides, bottom and top, affecting the air outlet efficiency. This application structure area is less, and collection sand table 5 easily dismantles, and the 5 inside impurity of collection sand table of being convenient for to know, and air inlet baffle 3, filter screen subassembly 2 and air-out baffle 4 also easily dismantle, are convenient for wash filter 21 in the filter screen subassembly 2, have improved the maintainability performance of device.

This application is through the wind of air inlet face 31 and is being on a parallel with filter 21 entering filter chamber 22, but does not have air outlet face 41 in this filter chamber 22, consequently gets into filter chamber 22's wind and need change the trend, becomes the cross wind by vertical wind, can enter into as to the filter chamber 22 that air outlet face 41 corresponds after filter 21, is exported again. The change of wind direction in this application also facilitates the dust and salt mist to be filtered by the filter plate 21.

In order to increase the air intake area of the air intake surface 31, the air intake surface 31 is shaped as a groove recessed into the filter chamber 22. Thus, the sand collecting plate 5 can be ensured to be small in size, and only one side of the air inlet surface 31 needs to be flush with the side edge of the filter screen component 2. And, the planar air inlet face 31 is compared to the air inlet face 31 of recess formula in this application, can make the intake increase, improves the efficiency of air conditioner.

In order to increase the effective area of air outlet surface 41, air outlet surface 41's shape can be for the recess of concave outside to filter chamber 22 in this application simultaneously, also can set up to the recess of concave outside to filter chamber 22, and the air outlet surface 41 of these two kinds of structures all can realize the air-out of great area. The air outlet quantity is increased due to the groove structure; in order to increase the effective filtering area of the wind sand, the wind outlet surface 41 is preferably shaped as a groove concave to the outside of the filtering chamber 22, so that the effective area in the air re-filtering chamber 22 is increased and the filtering is performed sufficiently.

In order to fully filter the air entering the device, a plurality of air inlet holes are uniformly arranged in the air inlet surface 31; a plurality of air outlet holes are uniformly arranged in the air outlet surface 41, and a plurality of filtering holes are arranged in the filtering plate 21. The aperture of the inlet openings can be larger than the aperture of the filter openings, since the inlet face 31 performs a coarse filtration of the incoming air, and the filter plate 21 performs a further fine filtration of the incoming air. The aperture of the air outlet can be smaller than that of the filtering hole, because the air blown into the device is basically filtered completely after passing through the air inlet and the filtering hole, the aperture of the air outlet is smaller, and the third filtering can be carried out. Or in order to increase air-out efficiency in this application, can set up the size of exhaust vent and fresh air inlet and equal, because the air after face 31 and filter 21 of air inlet has basically been filtered totally, can satisfy the operation requirement of air conditioner, no longer has the filtration demand to air-out face 41.

In order to ensure that air can not leak from bottom and top outward in the filter chamber 22, this application is still including being located the roof 1 on air inlet baffle 3, filter screen subassembly 2 and the 4 tops of air outlet baffle, roof 1 and air inlet baffle 3, filter screen subassembly 2 and air outlet baffle 4 sealing connection. Simultaneously, collection sand table 5 and air inlet baffle 3, filter screen subassembly 2 and air-out baffle 4 sealing connection. The bottom and the top of the filter screen assembly 2, and the whole assembly formed by the air inlet baffle 3 and the air outlet baffle 4 which cover the two sides of the filter screen assembly 2 are sealed, so that the air can only enter the chamber containing the air outlet surface 41 through the filter plate 21 to be blown out.

The sand-collecting disc 5 can be detached in the application, so that impurities such as sand and stone in the sand-collecting disc 5 can be removed conveniently. This application roof 1 can be dismantled, is convenient for dismantle washing etc. to air inlet baffle 3, filter screen subassembly 2 and air-out baffle 4.

The distribution of the air inlet face 31 and the air outlet face 41 in the present application is further explained and illustrated by 3 embodiments below:

example 1

Referring to fig. 1-4, a device for filtering sand from wind, comprising: the filter screen assembly 2 specifically comprises two sealing plates 23 and a plurality of filter plates 21 parallel to the sealing plates 23, a filter chamber 22 is formed between adjacent filter plates 21, and the filter plates 21 are positioned between the two sealing plates 23; the top end of the filter screen component 2 is sealed; the air inlet baffle 3 is positioned at one end covering the filtering chamber 22 and comprises at least one air inlet surface 31 containing air inlet holes, and the air inlet surface 31 corresponds to one filtering chamber 22; the air outlet baffle 4 is positioned at the other end of the covering filtering chamber 22 and comprises at least one air outlet surface 41 containing an air outlet hole, and the air outlet surface 41 corresponds to the filtering chamber 22 which is not overlapped with the air inlet surface 31; and the sand collecting plate 5 is positioned at the bottoms of the filter screen assembly 2, the air inlet baffle and the air outlet baffle.

The air inlet baffle 3 comprises an air inlet face 31 and a first shielding face 32, the air inlet face 31 and the first shielding face 32 are alternately distributed, and the air inlet face 31 and the first shielding face 32 correspond to the filtering chambers 22 one by one.

Air-out baffle 4 includes that air-out face 41 and second shield face 42, and air-out face 41 and second shield face 42 distribute in turn, and air-out face 41 and second shield face 42 and filter chamber 22 one-to-one, and air inlet face 31 and air-out face 41 correspond different filter chamber 22.

In this embodiment, the air outlet surface 41 and the air inlet surface 31 are distributed in a staggered manner at intervals, the first shielding surface 32 is arranged at the position corresponding to the air outlet surface 41 in the air inlet baffle plate 3, the second shielding surface 42 is arranged at the position corresponding to the air inlet surface 31 in the air outlet baffle plate 4, and the first shielding surface 32 and the second shielding surface 43 are non-open panels and do not have air inlet and air outlet functions.

The setting of this implementation makes the air in the filtration chamber 22 that enters through air inlet face 31 reach the next door filtration chamber 22 corresponding with air outlet face 41 through a filter 21 in, and the air passes through air inlet face 31, a filter 21 and air outlet face 41 output in proper order promptly.

Example 2

The present embodiment includes all the structures in embodiment 1, and on this basis, the first shielding surface 32 and the air inlet surface 31 are both arc surfaces concave to the filtering chamber 22, and the radius of the arc surface of the first shielding surface 32 is smaller than that of the arc surface of the air inlet surface 31. The air inlet surface 31 is of an arc-shaped structure, so that the contact area between the air inlet surface and the air inlet surface is increased, the air inlet amount is increased, the first shielding surface 32 does not need air inlet, and the arc-shaped radius of the first shielding surface 32 can be smaller for saving materials.

The second shielding surface 42 and the air outlet surface 41 are both cambered surfaces concave towards the outer side of the filtering chamber 22, and the radius of the cambered surface of the second shielding surface 42 is smaller than that of the cambered surface of the air outlet surface 41. The air outlet face 41 is set to be of an arc-shaped structure so as to increase the contact area with air and increase the air outlet amount, the second shielding face 42 does not need air outlet, and the arc radius of the second shielding face 42 can be smaller so as to save materials.

In this embodiment, the first shielding surface 32 and the second shielding surface 42 are both configured to be arc-shaped, so that the shapes of the air inlet baffle 3 and the air outlet baffle 4 can be ensured to be the same, and the air inlet baffle 3 and the air outlet baffle 4 can be installed in a staggered manner only when being installed on the filter screen assembly 2. The air inlet baffle 3 and the air outlet baffle 4 can be ensured to have the same structure, the air inlet baffle and the air outlet baffle are prepared by the same preparation process, and the air inlet baffle and the air outlet baffle are only installed in a staggered mode during installation, so that the manufacturing cost and the production efficiency of the sand wind filtering device can be improved.

Example 3

The present embodiment includes all the structures in embodiment 1, and on this basis, the air inlet surface 31 is a cambered surface concave to the filtering chamber 22, and the first shielding surface 32 is a plane perpendicular to the filtering plate 21. The air inlet surface 31 is of an arc structure so as to increase the contact area with air and increase the air inlet amount, the first shielding surface 32 does not need air inlet, and the first shielding surface 32 can be of a plane structure so as to save materials.

And the air outlet surface 41 is an arc surface concave to the outer side of the filtering chamber 22, and the second shielding surface 42 is a plane perpendicular to the filtering plate 21. The air outlet surface 41 is set to be of an arc-shaped structure so as to increase the contact area with air and increase the air outlet amount, the second shielding surface 42 does not need air outlet, and the second shielding surface 42 can be set to be a plane perpendicular to the filter plate 21 so as to save materials.

In this embodiment, the first shielding surface and the second shielding surface are both configured as a planar structure, and the air outlet surface 41 and the air inlet surface 31 are configured as an arc structure, so that it can be ensured that the shapes of the air inlet baffle 3 and the air outlet baffle 4 are the same, and only the air inlet baffle 3 and the air outlet baffle 4 are installed in a staggered manner when being installed on the filter screen assembly 2. The air inlet baffle 3 and the air outlet baffle 4 can be ensured to have the same structure, the air inlet baffle and the air outlet baffle are prepared by the same preparation process, and the air inlet baffle and the air outlet baffle are only installed in a staggered mode during installation, so that the manufacturing cost and the production efficiency of the sand wind filtering device can be improved.

In the present embodiment, the radius of the arc-shaped air intake surface 31 may be set to satisfy the following condition: pi r is greater than 2/3L, r refers to the radius of the arc-shaped air inlet surface 31, and L refers to the width of the two adjacent arc-shaped air inlet surfaces 31 and the first shielding surface 32 in the middle of the two adjacent arc-shaped air inlet surfaces. The arc-shaped air inlet surface 31 can be in a semicircular shape or an arc shape smaller than the semicircular shape.

The application also provides an air conditioner, which comprises the device for filtering wind and sand in each embodiment.

It should be understood that the above examples only represent the preferred embodiments of the present invention, and the description thereof is more specific and detailed, but should not be construed as limiting the scope of the present invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (10)

1. A device for filtering wind blown sand, comprising:

the filter screen assembly comprises two sealing plates and a plurality of filter plates parallel to the sealing plates, a filter chamber is formed between every two adjacent filter plates, and the filter plates are positioned between the two sealing plates; the top end of the filter screen component is sealed;

the air inlet baffle is positioned at one end covering the filtering chamber and comprises at least one air inlet surface comprising an air inlet hole, and the air inlet surface corresponds to one filtering chamber;

the air outlet baffle is positioned at the other end covering the filtering cavity and comprises at least one air outlet surface comprising an air outlet hole, and the air outlet surface corresponds to the filtering cavity which is not overlapped with the air inlet surface;

and the sand collecting plate is positioned at the bottoms of the filter screen assembly, the air inlet baffle and the air outlet baffle.

2. A device for filtering wind-blown sand according to claim 1, wherein the wind inlet surface is shaped as a recess which is concave towards the filter chamber.

3. A device for filtering aeolian sand according to claim 1, characterised in that said outlet face is shaped as a groove recessed towards the outside of said filter chamber.

4. The device of claim 1, wherein the air inlet baffle comprises an air inlet surface and a first shielding surface, the air inlet surface and the first shielding surface are alternately distributed, and the air inlet surface and the first shielding surface correspond to the filtering chambers one by one.

5. The device for filtering wind-blown sand as claimed in claim 4, wherein the wind outlet baffle comprises a wind outlet surface and second shielding surfaces, the wind outlet surface and the second shielding surfaces are alternately distributed, the wind outlet surface and the second shielding surfaces correspond to the filtering chambers one by one, and the wind inlet surface and the wind outlet surface correspond to different filtering chambers.

6. The device for filtering wind-blown sand according to claim 5, wherein the first shielding surface and the wind inlet surface are both cambered surfaces which are concave towards the filtering chamber, and the radius of the cambered surfaces of the first shielding surface is smaller than that of the cambered surfaces of the wind inlet surface;

the second shielding surface and the air outlet surface are cambered surfaces which are concave towards the outer side of the filter chamber, and the radius of the cambered surface of the second shielding surface is smaller than that of the cambered surface of the air outlet surface.

7. The apparatus of claim 5, wherein the air inlet surface is a curved surface concave to the filter chamber, and the first shielding surface is a plane perpendicular to the filter plate;

the air outlet surface is an arc surface which is concave to the outer side of the filter chamber, and the second shielding surface is a plane which is perpendicular to the filter plate.

8. The apparatus of claim 1, wherein the sand collection tray is sealingly connected to the air inlet baffle, the screen assembly, and the air outlet baffle.

9. The apparatus of claim 1, further comprising a top plate disposed at the top ends of the inlet, screen and outlet baffles, wherein the top plate is hermetically connected to the inlet, screen and outlet baffles.

10. An air conditioner characterized by comprising the device for filtering wind-blown sand of any one of claims 1 to 9.

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