Air conditioning system and sand-proof device

Abstract

The invention relates to the technical field of dust prevention, and particularly discloses a wind and sand prevention device and an air conditioning system. Wherein the shell is provided with an air inlet, an air outlet and an air duct communicated between the air inlet and the air outlet; the first filter is arranged in the air duct or at the air outlet, the rectifying component is arranged in the air duct or at the air inlet, and a plurality of flow guide channels used for guiding air are formed in the rectifying component; and in the wind flowing direction, the rectifying component and the first filter are sequentially arranged at intervals, so that a wind sand settling area is formed between the first filter and the rectifying component. According to the wind and sand prevention device and the air conditioning system, most of wind and sand can settle in the wind and sand settlement area, the situation that the wind and sand accumulate on the first filter and block the first filter is prevented, equipment is not prone to being affected by sand and dust, damage of the sand and dust to the equipment can be effectively prevented, normal operation of the equipment is guaranteed, and the use efficiency of the equipment is improved; and the service life of equipment is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of dust prevention technology, and more specifically to an air conditioning system and a wind and sand prevention device. Background Art

[0002] Ventilation equipment is widely used in life and production, such as air conditioning equipment, building ventilation equipment, outdoor equipment, etc. Take air conditioning equipment as an example. Air conditioning equipment is one of the indispensable equipment in modern production and life. Its main function is to dissipate heat through air convection to keep the indoor environment at a suitable temperature. However, the normal operation of air conditioning equipment depends on a stable air environment. When there is windy and sandy weather, a large amount of sand and dust will enter the outdoor unit of the air conditioner through the air inlet, blocking the condenser, corroding the equipment, and even damaging the fan, seriously affecting the normal operation of the air conditioner. Therefore, in windy and sandy weather, the anti-wind and sand ability of air conditioning equipment is very important.

[0003] In order to reduce the amount of sand and dust entering the equipment, a dust screen is usually added to the air inlet of the equipment, or a filtering device is installed in the air-conditioning equipment, and the filtering effect of the filtering device is improved by increasing the density of the filter screen.

[0004] In the process of implementing the present invention, the inventors found that there are at least the following problems in the prior art:

[0005] In windy and sandy weather, the dust-proof nets are of limited effect and the filtering devices are easily clogged. The equipment is affected by the sand and dust, and its operating efficiency is reduced or it is difficult to operate normally. Summary of the invention

[0006] In view of this, an object of the present invention is to provide an air conditioning system and a wind and sand protection device, the structural design of which can effectively solve the problem that the equipment is affected by sand and dust and has reduced operating efficiency or difficulty in normal operation.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A sand-proof device, comprising:

[0009] A housing, wherein the housing is provided with an air inlet, an air outlet, and an air duct connected between the air inlet and the air outlet;

[0010] A first filter, disposed in the air duct or at the air outlet;

[0011] A rectifying component is arranged in the air duct or at the air inlet, and the rectifying component forms a plurality of guide channels for guiding the wind; and along the wind flow direction, the rectifying component and the first filter are arranged in sequence at intervals to form a wind and sand settling area between the first filter and the rectifying component.

[0012] Optionally, in the above-mentioned wind and sand protection device, the plurality of diversion channels are distributed in a grid shape.

[0013] Optionally, in the above-mentioned wind and sand protection device, the rectifying component includes a plurality of guide plates, and the plurality of guide plates are distributed in a vertical and horizontal cross pattern to form a plurality of guide channels distributed in a grid shape.

[0014] Optionally, the above-mentioned wind and sand protection device further includes a second filter, which is arranged in the shell and located behind the first filter. The filtering accuracy of the second filter is greater than the filtering accuracy of the first filter.

[0015] Optionally, in the above-mentioned wind and sand protection device, the first filter is arranged above the rectifying component, and the wind and sand settling area is arranged above the air inlet.

[0016] Optionally, in the above-mentioned wind and sand protection device, the ventilation area of ​​the air inlet is larger than the ventilation area of ​​the air outlet.

[0017] Optionally, in the above-mentioned wind and sand protection device, the ventilation area of ​​the air inlet is not less than a preset value, and the preset value is the ventilation area corresponding to the wind speed of the air inlet being 3m / s and the air volume satisfying the maximum air intake volume of the equipment.

[0018] Optionally, in the above-mentioned wind and sand protection device, the first filter is detachably connected to the shell.

[0019] Optionally, in the above-mentioned wind and sand protection device, the shell includes a shell body and supporting legs, the air inlet and the air outlet are arranged at two ends of the shell body, and the supporting legs are arranged at the air inlet.

[0020] The wind and sand prevention device provided by the present invention comprises a shell rectifying component and a first filter. The shell is provided with an air inlet, an air outlet and an air duct, and the air duct is connected between the air inlet and the air outlet; the first filter is arranged in the air duct or at the air outlet; the rectifying component is arranged in the air duct or at the air inlet, and the rectifying component is formed with a plurality of guide channels for guiding the wind; and along the wind flow direction, the rectifying component and the first filter are arranged in sequence at intervals to form a wind and sand settling area between the first filter and the rectifying component.

[0021] When using the anti-wind and sand device provided by the present invention, the air outlet of the shell is connected to the air inlet of the equipment. The ambient air enters the air duct through the air inlet of the shell, first enters the wind and sand settling area after the guiding effect of the rectifying component, and then is filtered by the first filter and sent to the air inlet of the equipment through the air outlet to realize the equipment air intake.

[0022] In summary, the present application reduces the turbulence of the wind by setting a rectifying component at the air inlet or in the air duct, and reduces the wind speed so that most of the wind and sand settle in the wind and sand settling area formed between the rectifying component and the first filter, and then the incoming air is filtered by the first filter and sent out from the air outlet. This avoids the accumulation of wind and sand on the first filter and causes the first filter to be blocked, and the equipment is not easily affected by sand and dust, which can effectively prevent the damage of sand and dust to the equipment, ensure the normal operation of the equipment, improve the efficiency of the equipment, and extend the service life of the equipment.

[0023] In order to achieve the above object, the present invention also provides an air conditioning system, which includes any one of the above-mentioned wind and sand protection devices. Since the above-mentioned wind and sand protection device has the above-mentioned technical effects, the air conditioning system having the wind and sand protection device should also have corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 The figure is a schematic structural diagram of a wind and sand protection device according to a specific embodiment of the present invention.

[0026] Reference numerals:

[0027] 1-anti-sand device; 2-equipment; 21-equipment air inlet;

[0028] 11-housing; 12-rectifying component; 13-first filter; 14-second filter;

[0029] 111 - air inlet; 112 - air outlet; 113 - wind and sand settling area; 101 - shell body; 102 - supporting legs; 121 - guide channel; 122 - guide plate. DETAILED DESCRIPTION

[0030] The embodiment of the present invention discloses an air conditioning system and a wind and sand protection device to prevent the equipment from being affected by sand and dust, thereby preventing the equipment from having a reduced operating efficiency or being difficult to operate normally.

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] For equipment that requires ventilation, in order to reduce the amount of dust entering the equipment, a dust screen is usually added to the air inlet of the equipment or a filter device is installed in the air conditioning equipment. However, although the dust screen can reduce the entry of some dust, it cannot completely prevent the entry of dust, especially in windy and sandy weather, the effect of the dust screen is limited. Although the filter device can improve the filtering effect by increasing the dustproof level of the filter, in windy and sandy weather, a large amount of dust can easily cause the filter to be blocked, affecting the normal use of the equipment, and requiring timely cleaning or replacement, which increases the difficulty and cost of maintenance. In addition, common wind and sand protection devices and filter devices are complex in design, difficult to maintain, and have high maintenance costs.

[0033] In order to at least partially solve the defects of the above-mentioned anti-sand device, the present application provides an anti-sand device that can be used for the above-mentioned equipment. The above-mentioned equipment includes but is not limited to air conditioners, building ventilation equipment, and outdoor activity equipment. The anti-sand device is provided by setting an air duct from the air inlet to the air outlet, and sequentially arranging a rectifying component and a filter in the air duct from the air inlet to the air outlet. The rectifying component is used to reduce the turbulence of the wind, thereby reducing the wind speed, so that most of the wind and sand can settle in the wind and sand settling area between the rectifying component and the filter, and then the incoming air is filtered by the first filter and sent out from the air outlet, thereby avoiding the blockage of the first filter.

[0034] The anti-wind and sand device can achieve long-term dust prevention. When used in air-conditioning equipment, it can effectively prevent dust from damaging the air-conditioning equipment, extend the service life of the equipment, and reduce maintenance costs. It has great market potential. When the anti-wind and sand device is used in building ventilation equipment, it can effectively prevent dust from blocking the equipment, ensure the normal operation of the equipment, and improve the efficiency of the equipment. When the anti-wind and sand device is used in outdoor activity equipment, such as tents, camping cars, etc., it can provide a good ventilation environment, improve the comfort of users, and meet the needs of users.

[0035] In some embodiments, see Figure 1 The wind and sand prevention device 1 provided by the present invention comprises a shell 11, a rectifying component 12 and a first filter 13. Among them, the shell 11 is provided with an air inlet 111, an air outlet 112 and an air duct, and the air duct is connected between the air inlet 111 and the air outlet 112. The shell 11 is used to form an air duct, and the air outlet 112 is used to connect with the equipment air inlet 21. The specific structure of the shell 11 can be set as needed, such as setting the height of the shell 11 and the position of the air outlet 112 according to the position of the external circulation air inlet 111 of the air-conditioning equipment 2. The air outlet 112 is usually set to one to communicate with the equipment air inlet 21 of one equipment 2. As needed, multiple air outlets 112 can also be set, which can be connected with multiple equipment air inlets 21 of one equipment 2, or connected with the equipment air inlets 21 of multiple equipment 2. The number of air inlets 111 on the shell 11 can be set to one or more.

[0036] The rectifying component 12 is provided at the housing 11. The rectifying component 12 can be located at the air inlet 111 or in the air duct, such as between the air inlet 111 and the air outlet 112. The rectifying component 12 is formed with a plurality of guide channels 121 for guiding the wind. The rectifying component 12 can guide the air entering the air inlet 111, thereby reducing the turbulence of the wind and thereby reducing the wind speed to a certain extent. The specific structure of the rectifying component 12 can be set as required.

[0037] The first filter 13 is arranged in the housing 11, and it can be arranged at the air outlet 112 or in the air duct, such as between the rectifying component 12 and the air outlet 112. The first filter 13 is located behind the rectifying component 12, that is, on the side of the rectifying component 12 close to the air outlet 112. Along the wind flow direction, the rectifying component 12 and the first filter 13 are arranged in sequence to form a wind and sand settling area 113 between the first filter 13 and the rectifying component 12. It can be understood that the front and back in this application refer to the flow direction of the wind in the housing 11, and the first passing is the front, and the reverse is the back. The first filter 13 is arranged at intervals with the rectifying component 12 to enclose the wind and sand settling area 113 with the housing 11, and the wind and sand after flowing through the rectifying component 12 can settle in the settling area. The length of the wind and sand settling area 113 can be set accordingly according to the wind speed and the wind and sand settling conditions, and is not specifically limited here.

[0038] When using the anti-wind and sand device 1 provided by the present invention, the air outlet 112 of the shell 11 is connected to the equipment air inlet 21. The ambient air enters the air duct through the air inlet 111 of the shell 11, first enters the wind and sand settling area 113 after the guiding effect of the rectifying component 12, and then is filtered by the first filter 13 and sent to the equipment air inlet 21 through the air outlet 112 to realize the air intake of the equipment 2.

[0039] In summary, the present application reduces the turbulence of the wind by arranging a rectifying component 12 at the air inlet 111 or in the air duct, and forms a low wind speed area, i.e., a wind sand settling area 113, between the rectifying component 12 and the first filter 13. By reducing the wind speed, most of the wind sand is settled in the wind sand settling area 113, and the incoming wind is filtered by the first filter 13 and sent out from the air outlet 12. This avoids the accumulation of wind sand on the first filter 13 and causing the first filter 13 to be blocked, and then the device 2 is not easily affected by sand and dust, which can effectively prevent the damage of the device 2 to the sand and dust, ensure the normal operation of the device 2, improve the use efficiency of the device 2, and extend the service life of the device 2.

[0040] In some embodiments, the plurality of guide channels 121 are distributed in a grid shape. That is, the rectifying component 12 is formed with a plurality of guide channels 121, and the plurality of guide channels 121 are distributed in a grid shape, and such a configuration can effectively reduce wind turbulence. The ventilation areas of the guide channels 121 can be the same or different.

[0041] In some embodiments, the rectifying component 12 includes a plurality of guide plates 122, and the plurality of guide plates 122 are distributed in a vertical and horizontal cross pattern to form a plurality of guide channels 121 distributed in a grid pattern. The plurality of guide channels 121 are surrounded by a plurality of guide plates 122, and the structure is simple and easy to form. It is understandable that each guide plate 122 can be a split plate, and is connected to each other by a conventional fixing method to form a vertical and horizontal cross pattern. Each guide plate 122 can also be an integrated structure, such as directly forming a guide channel 121 distributed in a grid pattern by injection molding.

[0042] In some embodiments, a second filter 14 is further provided in the housing 11. Along the direction of wind flow, the second filter 14 is located behind the first filter 13, that is, on the side close to the air outlet 112, and the filtering accuracy of the second filter 14 is greater than the filtering accuracy of the first filter 13. It can be understood that when the second filter 14 is provided, the first filter 13 is provided in the air duct, and the second filter 14 can be provided in the air duct or at the air outlet 112. The first filter 13 is a primary filter, and the second filter 14 is a medium filter. After the incoming air passes through the wind-less sedimentation area to achieve the sedimentation of most of the wind and sand, it flows through the primary filter, and then flows through the medium filter after its preliminary filtering effect, so as to achieve higher-precision filtering and further improve the quality of the incoming air. Through the setting of a multi-stage filter, the incoming air passes through the filtering effect of filters at each level, and the quality gradually improves to meet the requirements of the incoming air quality in different scenarios.

[0043] In other embodiments, three or more filters are provided in the housing 11. Exemplarily, a third filter may be provided in the housing 11, and the third filter is located behind the second filter 14, that is, close to the side of the air outlet 112, and the filtering accuracy of the third filter is greater than the filtering accuracy of the second filter 14.

[0044] In some embodiments, the first filter 13 is disposed above the rectifying component 12, and the wind and sand settling area 113 is disposed above the air inlet 111. The first filter 13 and the rectifying component 12 are arranged in the vertical direction in the housing 11. For example, if the housing 11 has a vertical section extending vertically, the first filter 13 and the rectifying component 12 are both disposed in the vertical section, or if the housing 11 has an inclined section extending obliquely, the first filter 13 and the rectifying component 12 are both disposed in the inclined section. After the incoming air passes through the rectifying component 12 from below the rectifying component 12, the sand and dust can be effectively settled in the wind and sand settling area 113 during the upward flow of the incoming air. As set above, in the wind and sand settling area 113, the sand and dust can be settled and concentrated on the side away from the first filter 13, that is, the deposition position of the sand and dust in the wind and sand settling area 113 is opposite to the first filter 13, which further reduces the influence of the sand and dust on the first filter 13 and avoids the clogging of the first filter 13. In other embodiments, the first filter 13 and the rectifying component 12 may also be arranged in the horizontal direction in the shell 11. For example, the shell 11 has a horizontal section extending horizontally, and the first filter 13 and the rectifying component 12 are both arranged in the horizontal section. When the incoming air after passing through the rectifying component 12 passes through the wind and sand settling area 113, the sand and dust can also be effectively deposited in the wind and sand settling area 113.

[0045] In some embodiments, the ventilation area of ​​the air inlet 111 is greater than the ventilation area of ​​the air outlet 112. The air inlet 111 on the housing 11 is designed to have a ventilation area greater than the equipment air inlet 21, which can reduce the wind speed of the air inlet 111. After the wind speed is reduced, the incoming air can be better settled in the wind and sand settling area 113 after passing through the rectifying component 12.

[0046] In some embodiments, the ventilation area of ​​the air inlet 111 is not less than a preset value, and the preset value is that the wind speed of the air inlet 111 is 3m / s and the air volume satisfies the ventilation area corresponding to the maximum air inlet of the device. The size of the air inlet 111 can be calculated according to the air inlet volume, and the air inlet volume is determined according to the air inlet volume setting of the device 2. The size of the air inlet 111 is controlled according to the air inlet volume, that is, the ventilation area of ​​the air inlet 111 is designed so that the wind speed of the air inlet 111 is reduced to less than 3m / s. When the air inlet volume of the device 2 meets a certain numerical range, the size of the air inlet 111 is set according to the maximum air inlet volume requirement, that is, when the air volume meets the maximum air inlet volume requirement of the device, the wind speed at the air inlet 111 is not greater than 3m / s through the design of the ventilation area of ​​the air inlet 111. Setting the wind speed of the air inlet 111 at 3m / s can ensure that the wind and sand are effectively deposited in the wind and sand settling area 113. Exemplarily, the rectifying component 12 is disposed at the air inlet 111 , and the size of the air inlet 111 is set according to the air intake volume of the device 2 , and the size of the rectifying component 12 is the same as the size of the air inlet 111 .

[0047] In some embodiments, the wind and sand prevention device 1 further includes a baffle, a driving component, a wind speed detection device and a controller. Among them, the baffle is arranged at the air inlet 111 for at least partially shielding the air inlet 111, and the baffle is movably connected to the housing 11, the driving end of the driving component is connected to the baffle to drive the baffle to move, the wind speed detection device is used to detect the wind speed of the air inlet 111, and the controller is connected to the wind and sand detection device and the driving component respectively, and is used to control the driving component to drive the baffle to move to reduce the shielding area of ​​the air inlet 111 when the real-time wind speed detected by the wind speed detection device is greater than the preset wind speed, and control the driving component to drive the baffle to move to increase the shielding area of ​​the air inlet 111 when the real-time wind speed detected by the wind speed detection device is less than the preset wind speed. It can be understood that when the driving component drives the baffle to move to reduce the shielding area of ​​the air inlet 111, the effective ventilation area formed by the air inlet 111 increases, that is, the area of ​​the remaining air inlet 111 not shielded by the baffle increases, thereby increasing the effective ventilation area of ​​the air inlet 111. On the contrary, when the driving component drives the baffle to move to increase the shielding area of ​​the air inlet 111, the effective ventilation area formed by the air inlet 111 is reduced, that is, the area of ​​the remaining air inlet 111 not shielded by the baffle is reduced, thereby reducing the effective ventilation area of ​​the air inlet 111. The above arrangement can achieve real-time adjustment of the effective ventilation area of ​​the air inlet 111, thereby more accurately controlling the wind speed of the air inlet 111 to achieve the effect of automatically cleaning sand and dust.

[0048] In some embodiments, the baffle is slidably disposed on the housing 11, and the driving component is used to drive the baffle to slide. In other embodiments, the baffle is rotatably disposed on the housing 11, and the driving component is used to drive the baffle to rotate.

[0049] In some embodiments, the first filter 13 is detachably connected to the housing 11. By detachably connecting the first filter 13 to the housing 11, the maintenance and replacement of the first filter 13 can be facilitated, and the service life of the device 2 is extended. If the first filter 13 needs to be cleaned or replaced, the first filter 13 can be easily removed from the housing 11 for repair or replacement of the first filter 13. Exemplarily, the first filter 13 is connected to the housing 11 by bolts, such as the outer shell of the first filter 13 is connected to the housing 11 by bolts, which is convenient for disassembly and assembly, and the connection is reliable. As needed, the first filter 13 and the housing 11 can also be connected by other detachable methods such as snap-on, magnetic fixation, etc. In the case where a second filter 14 is provided, the second filter 14 can also be detachably connected to the housing 11.

[0050] In some embodiments, a sealing component is provided between the side wall of the first filter 13 and the inner wall of the housing 11. In order to ensure the filtering effect and prevent impurities in the wind and sand from entering the air inlet 21 of the device through the gap between the first filter 13 and the housing 11, a sealing component is provided between the sides of the first filter 13 and the inner wall of the housing 11 to seal, further ensuring the quality of the air intake. Exemplarily, the sealing component is a sealing strip, that is, a sealing strip is provided around the first filter 13 to seal with the housing 11. In the case where the second filter 14 is provided, a sealing component is also specifically provided between the side wall of the second filter 14 and the inner wall of the housing 11 to ensure the filtering effect.

[0051] In some embodiments, the first filter 13 includes a housing and a filter screen disposed in the housing, and the filter screen is detachably connected to the housing. By detachably connecting the filter screen to the housing, the maintenance and replacement of the filter screen can be facilitated. If the filter screen needs to be cleaned or replaced, the filter screen can be conveniently removed from the housing to be repaired or replaced with a new filter screen, without having to replace the first filter 13 as a whole, thereby reducing maintenance costs. Exemplarily, the filter screen is connected to the housing by snapping, such as a card slot is provided on one of the filter screen and the housing, and a card head engaged with the card slot is provided on the other, and the filter screen is locked in the housing by the card head and the card slot. The housing and the filter screen are bolted, which is convenient for disassembly and assembly and reliable for connection. As needed, the filter screen and the housing can also be connected by other detachable methods such as screws, magnetic fixation, etc. Alternatively, the filter screen and the housing can also be fixedly connected by bonding or the like. To ensure the filtering effect of the filter screen, the edge of the filter screen is sealed with the housing, such as by providing a sealing strip for sealing. By detachably connecting the first filter 13 to the housing 11, or detachably connecting the filter screen to the housing, the problem that the filter screen will accumulate a lot of dust after long-term use of the existing first filter 13, and it is difficult to clean or replace it regularly, is effectively solved. In the case where the second filter 14 is arranged in the housing 11, the second filter 14 may also include a housing and a filter screen, and the filter screen is detachably connected to its housing.

[0052] In some embodiments, the housing 11 includes a main housing 101 and legs 102, an air inlet 111 and an air outlet 112 are provided at both ends of the housing body 101, and the legs 102 are provided at the air inlet 111. Through the legs 102 at the bottom of the main housing 101, the legs 102 can be supported on a supporting platform such as the ground during installation, thereby avoiding blocking of the air inlet 111, and the incoming air can enter the air inlet 111 from directly below the bottom of the air inlet 111, front and back, left and right directions. As set above, the wind and sand protection device is easy to install, the installation orientation is more flexible, and it is not affected by the air inlet 111.

[0053] In some embodiments, the main housing 101 includes a vertical section and a horizontal section, the bottom end of the vertical section is an air inlet 111, the horizontal section is connected to the top end of the vertical section, and the ventilation area of ​​the horizontal section is smaller than the ventilation area of ​​the vertical section, the rectifying component 12 and the first filter 13 are both arranged in the vertical section, and in the case of including a second filter, the second filter 14 is also arranged in the vertical section. As set above, since the ventilation area of ​​the vertical section is larger, the rectifying component 12 and the first filter 13 and the second filter 14 with larger cross-sectional areas can be set accordingly to improve the filtering effect. The ventilation area of ​​the horizontal section is smaller, and it can better cooperate with the equipment air inlet 21, such as directly docking with the equipment air inlet 21.

[0054] Based on the anti-sand device 1 provided in the above embodiment, the present invention further provides an air conditioning system, which includes any one of the anti-sand devices 1 in the above embodiment. Since the air conditioning system adopts the anti-sand device 1 in the above embodiment, please refer to the above embodiment for the beneficial effects of the air conditioning system.

[0055] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0056] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sand-proof device, characterized in that: include: A shell (11), the shell (11) being provided with an air inlet (111), an air outlet (112), and an air duct communicating between the air inlet (111) and the air outlet (112); A first filter (13) is disposed in the air duct or at the air outlet (112); A rectifying component (12) is arranged in the air duct or at the air inlet (111), and the rectifying component (12) is formed with a plurality of guide channels (121) for guiding wind; and along the wind flow direction, the rectifying component (12) and the first filter (13) are arranged in sequence and spaced apart to form a wind and sand settling area (113) between the first filter (13) and the rectifying component (12).

2. The sand-proof device according to claim 1, characterized in that: The plurality of guide channels (121) are distributed in a grid shape.

3. The sand-proof device according to claim 2, characterized in that: The rectifying component (12) comprises a plurality of guide plates (122), wherein the plurality of guide plates (122) are distributed in a vertical and horizontal manner to form a plurality of guide channels (121) distributed in a grid shape.

4. The sand-proof device according to claim 1, characterized in that: It also comprises a second filter (14), the second filter (14) being arranged in the housing (11) and arranged behind the first filter (13) along the direction of wind flow, the second filter (14) having a filtering accuracy greater than that of the first filter (13).

5. The wind and sand protection device according to claim 1, characterized in that: The first filter (13) is arranged above the rectifying component (12), and the wind and sand settling area (113) is arranged above the air inlet (111).

6. The wind and sand protection device according to any one of claims 1 to 5, characterized in that: The ventilation area of ​​the air inlet (111) is greater than the ventilation area of ​​the air outlet (112).

7. The sand-proof device according to claim 6, characterized in that: The ventilation area of ​​the air inlet (111) is not less than a preset value, wherein the preset value is a ventilation area corresponding to a wind speed of 3 m / s at the air inlet (111) and an air volume that satisfies the maximum air volume of the device.

8. The wind and sand protection device according to any one of claims 1 to 5, characterized in that: The first filter (13) is detachably connected to the housing (11).

9. The sand-proof device according to claim 8, characterized in that: The shell (11) comprises a shell body (101) and a support leg (102); the air inlet (111) and the air outlet (112) are arranged at two ends of the shell body (101); and the support leg (102) is arranged at the air inlet (111).

10. An air conditioning system, characterized in that: It comprises the wind and sand protection device as described in any one of claims 1 to 9.

Images