Square side wall fan

Abstract

The utility model provides a square side wall fan which comprises a shell provided with an air inlet and an air outlet, a first protective net cover and a second protective net cover, the first protective net cover and the second protective net cover are arranged on the air inlet and the air outlet respectively, a motor is arranged on the first protective net cover, an impeller is installed on an output shaft of the motor, and a dust falling device is arranged in the shell. The dust falling device comprises a first spraying pipe, a second spraying pipe and a water pipe communicating with the first spraying pipe and the second spraying pipe, water is sprayed to air exhausted from the air outlet through the first spraying pipe and the second spraying pipe which are installed on the two sides of the air outlet, and dust floating in the air adheres to each other through tension and gravity of water mist and descends. And the dust falling effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a square side wall fan. Background Art

[0002] Sidewall fans are generally used for ventilation in factories, warehouses, offices, or large indoor places. The current Chinese utility model patent with the announcement number CN207945113U discloses a sidewall axial flow fan, which has a housing, a first protective mesh cover arranged at one end of the housing, a motor arranged on the first protective mesh cover, and an impeller arranged on the output shaft of the motor. The housing is provided with a rain shield at the end away from the first protective mesh cover. The rain shield includes a cover body arranged on the housing and a filter screen arranged on the cover body. The cover body is formed with an air outlet inclined downward in a direction away from the housing at the end away from the housing, and the filter screen covers the air outlet. However, when this sidewall fan is used in dusty places such as factories and warehouses, the amount of dust discharged in the air is high, which affects the outdoor air quality. In addition, the sidewall axial flow fan is provided with louvers, but there are still certain gaps. Small insects or foreign objects can easily enter the interior of the fan and cause certain damage to the fan. Utility Model Content

[0003] The utility model aims to solve the shortcomings of the prior art and proposes a square sidewall fan.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A square sidewall fan includes a shell with an air inlet and an air outlet, a first protective mesh cover and a second protective mesh cover respectively arranged on the air inlet and the air outlet, a motor is provided on the first protective mesh cover, an impeller is mounted on the output shaft of the motor, a dust reduction device is provided in the shell, and the dust reduction device includes a first nozzle, a second nozzle and a water pipe respectively connecting the first nozzle and the second nozzle.

[0006] Furthermore, the first nozzle and the second nozzle are respectively located on the left and right sides of the inner wall of the shell and close to the air outlet, and a plurality of spray holes are provided on the outer walls on the opposite sides of the first nozzle and the second nozzle, and nozzles are installed on the spray holes.

[0007] Furthermore, a water processor is installed on the water pipe.

[0008] Furthermore, the shell includes a first shell and a second shell that are adapted to be installed and connected, a circular air duct is provided in the first shell, the first protective net cover is adapted to be installed at the inlet of the circular air duct, and the impeller is located in the circular air duct.

[0009] Furthermore, an insect-proof device is provided between the first shell and the second shell. The insect-proof device 4 includes a plate and a circular opening provided on the plate. The circular opening is connected to the circular air duct and is provided with a baffle to close the circular air duct.

[0010] Furthermore, the barrier portion includes a plurality of movable blades, and the blades are all movable and open in the same direction. When closed, the upper and lower blades are connected end to end.

[0011] Furthermore, the blade is provided with a first folding edge, a second folding edge and a third folding edge, the second folding edge is folded inward from the upper end of the blade; the first folding edge extends vertically from the upper end of the second folding edge; the third folding edge is folded inward from the lower end of the blade and covers the first folding edge of the lower blade.

[0012] Furthermore, the blade is provided with a shaft hole on the left and right sides, and is movably mounted on the circular opening through the shaft hole.

[0013] Furthermore, the second shell includes a top plate, two side plates, a bottom plate and a rain shield extending downward from the side of the top plate away from the first shell. The length of the top plate is greater than that of the bottom plate, so that the air outlet is tilted downward.

[0014] The utility model has the following beneficial effects:

[0015] A dust reduction device is provided, which sprays water on the air discharged from the air outlet through the first nozzle and the second nozzle installed on both sides of the air outlet, so that the dust floating in the air adheres to each other and falls due to the tension and gravity of the water mist, thereby achieving the effect of dust reduction.

[0016] A magnetic water filter is installed at the second section of the water pipe. The water treated by the magnetic water filter has a stronger tension, making the dust in the air more easily adhere to each other, further enhancing the dust reduction effect.

[0017] An insect-proof device is provided, which closes the circular opening through a number of polygonal blades connected end to end, thereby closing the circular air duct to prevent insects, rodents and foreign objects from entering the fan from the outside and causing damage.

[0018] For other beneficial effects, see the instructions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the overall structure of an embodiment of the present utility model.

[0020] Figure 2 This is an exploded view of the overall structure of an embodiment of the present utility model.

[0021] Figure 3This is a schematic diagram of the insect repellent device in the open state according to an embodiment of the present invention.

[0022] Figure 4 This is a three-dimensional structural diagram of the blade according to an embodiment of the present utility model.

[0023] Figure 5 This is a side sectional view of the insect repellent device in the closed state according to an embodiment of the present invention.

[0024] Figure 6 This is a schematic diagram of the gas flow in the fan according to an embodiment of the present invention.

[0025] Figure 7 This is a three-dimensional structural diagram of the dust suppression device according to an embodiment of the present utility model.

[0026] Reference numerals in the figures: housing 1, first protective mesh cover 11, second protective mesh cover 12, impeller 13, air inlet 14, air outlet 15, first outer shell 16, circular air duct 161, first outer edge 162, second outer shell 17, top plate 171, two side plates 172, bottom plate 173, rain shield 174, second outer edge 175;

[0027] Motor 2;

[0028] Dust suppression device 3, first nozzle 31, second nozzle 32, water pipe 33, first water pipe section 331, second water pipe section 332, nozzle 34, water processor 35;

[0029] The insect-proof device 4 includes a plate 41 , a circular opening 42 , a barrier portion 43 , blades 44 , a first folded edge 441 , a second folded edge 442 , a third folded edge 443 , and a rotating shaft hole 444 . DETAILED DESCRIPTION

[0030] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0033] like Figure 1-Figure 7 As shown, a square side wall fan is installed on the wall of a factory building and is used to blow out the air and dust in the factory building, so as to achieve the effect of air circulation in the factory building and reduce the dust in the factory building. It includes a shell 1 provided with an air inlet 14 and an air outlet 15. Specifically, in order to facilitate quick installation, the shell 1 is square and can be installed directly by reserving a square opening on the wall. Unlike other side wall fans with round shapes, it is not necessary to correct the edge of the wall bricks into an arc shape to adapt to the round side wall fan, which greatly saves installation time. The air inlet 14 and the air outlet 15 are respectively located at the two ends of the shell 1, and the air inlet 14 and the air outlet 15 are respectively installed with a first protective mesh cover 11 and a second protective mesh cover 12 to prevent foreign objects such as leaves, sand and gravel, mice, cockroaches, etc. from entering the shell 1 through the air inlet 14 or the air outlet 15 and causing damage to the internal part of the fan. Specifically, the first protective mesh cover 11 and the second protective mesh cover 12 can be installed by welding or screwing. The first protective screen 11 is provided with a motor 2. An impeller 13 is mounted on the output shaft of the motor 2 and is driven by the motor 2 to rotate, thereby extracting air. Specifically, in the present invention, the motor 2 is a conventional axial-flow explosion-proof motor, model YBX3, which effectively prevents explosions from occurring within the motor 2 in dusty factories. To further achieve explosion-proof properties, the impeller 13 is made of aluminum, as the motor 2 is typically made of iron.

[0034] Further, such as Figure 1 、 Figure 2 As shown, the shell 1 includes a first shell 16 and a second shell 17 that are connected. Specifically, the connection between the first shell 16 and the second shell 17 is respectively provided with a first outer edge 162 and a second outer edge 175 turned outward. The first outer edge 162 and the second outer edge 175 are connected and fixed to each other by welding or screwing and then installed on the wall of the factory building.

[0035] Further, such as Figure 2 、 Figure 6As shown, to quickly expel airflow, a circular air duct 161 is provided within the first housing 16. The circular air duct 161 runs through the entire first housing 16. The first protective screen 11 is adapted to be mounted at the inlet of the circular air duct 161, and the impeller 13 is located within the circular air duct 161. Because a circular duct has the smallest flow resistance coefficient of all shapes, fluid flows more smoothly within the circular air duct 161, resulting in higher ventilation efficiency compared to existing square air ducts on the market.

[0036] like Figure 2 、 Figure 7 As shown, in order to achieve the dust reduction effect and reduce the pollution to the environment caused by dust in the exhausted air, a dust reduction device 3 is provided in the housing 1. By spraying water mist, the floating dust in the air adheres to each other and settles, thereby achieving the dust reduction effect and reducing the pollution to the external air. Specifically, the dust reduction device 3 is installed near the air outlet 15 in the second housing 17, and one section of it is connected to the water source. The dust reduction device 3 includes a first nozzle 31, a second nozzle 32, and a water pipe 33 that connects the first nozzle 31 and the second nozzle 32 respectively. Specifically, the water pipe 33 includes a first water pipe section 331 and a second water pipe section 332. The two ends of the first water pipe section 331 are connected to the first nozzle 31 and the second nozzle 32 respectively. One end of the second water pipe section 332 is connected to the first water pipe section 331, and the other end passes through the first housing 16 and is connected to the water source, supplying water to the first nozzle 31 and the second nozzle 32 for spraying.

[0037] In order to achieve a better spraying effect, the first nozzle 31 and the second nozzle 32 are respectively located on the left and right sides of the inner wall of the shell 1 and close to the air outlet 15. The first nozzle 31 and the second nozzle 32 extend along the opening direction of the air outlet 15 and are provided with a plurality of spray holes on the outer walls on the opposite sides of the first nozzle 31 and the second nozzle 32. The nozzles 34 are installed on the spray holes. Water is sprayed out at high pressure through the nozzles 34 on both sides, forming a water curtain to intercept the dust passing through the air outlet 15. When the dust encounters the water mist, the mutual adhesion will increase, and due to gravity, it will fall rapidly, achieving the effect of dust reduction and effectively preventing dust from flying. Specifically, the diameter of the nozzle 34 is 0.6mm-5mm. In the present utility model, in order to achieve a finer spray effect, a nozzle 34 with a diameter of 0.8mm is used.

[0038] In order to achieve a better sealing effect and avoid water leakage at each connection during the water supply process, a sealing ring is provided at each connection port for sealing.

[0039] Furthermore, since a lot of dust enters the interior of the fan, and in order to reduce the load-bearing burden of the shell 1 and the internal structure, the dust suppression device 3 is made of metal aluminum.

[0040] To further enhance dust reduction, a water treatment device 35 is installed on the water pipe 33. Specifically, the water treatment device 35 is a magnetic water device that further increases the tension of the water mist and enhances the adhesion of dust. The two ends of the water treatment device 35 are connected to the second water pipe section 332. The water entering the second water pipe section 332 is magnetized before entering the first water pipe section 331 and being ejected from the spray hole 34. This magnetic water device can be a commercially available model.

[0041] like Figure 2-Figure 5 As shown, in order to further enhance the insect-proof effect and prevent small flying insects or debris from entering the fan through the second protective mesh cover 12 and damaging the impeller 13 and motor 2, an insect-proof device 4 is provided between the first housing 16 and the second housing 17. Specifically, the insect-proof device 4 includes a plate 41 and a circular opening 42 formed on the plate 41. The circular opening 42 is connected to the circular air duct 161 and is equipped with a baffle 43 to close the circular air duct 161. One side of the plate 41 is in close contact with the inner side of the first outer edge 162, and the other side is in close contact with the second outer edge 175. The three are fixed by welding or screws. The circular opening 42 is equal in diameter to the circular air duct 161, and the baffles 43 are evenly distributed on the circular opening 42.

[0042] Furthermore, the barrier portion 43 includes a plurality of movable blades 44, which are arranged from top to bottom and all open in the same direction. When closed, the upper and lower blades 44 are connected end to end. Specifically, the upper ends of the left and right sides of the blades 44 are provided with a shaft hole 444. Correspondingly, the circular opening 42 is also provided with a shaft hole 444 at the corresponding position. The two ends of the shaft are respectively inserted into the shaft holes 444, so that the blades 44 are mounted on the circular opening 42 and move along the axis of the shaft. Specifically, when the motor 2 is connected to the power supply, the motor shaft drives the impeller 13 to rotate synchronously. At this time, due to the large amount of airflow drawn into the fan, the airflow blows the blades 44 upward, causing them to flip up along the axis toward the air outlet 15. At this time, the air inlet 14 is connected to the air outlet 15, and the airflow can be discharged outward from the air outlet 15 through the circular opening 42. On the contrary, when the motor 2 is disconnected from the power supply, the impeller 13 cannot rotate, and due to the action of gravity, the blades 44 naturally droop. At this time, the lower end of the upper blade 44 rests on the upper end of the lower blade 44, thereby closing the circular opening 42 and preventing small flying insects, sand and dust from passing through.

[0043] Furthermore, since the blades 44 are flat, they are prone to cracking, breaking or deformation due to mutual collision during the continuous opening and closing process, resulting in gaps or notches when closed. In order to achieve better insect and dust proofing effects, in the utility model, the blades 44 are of polygonal design. Specifically, the blades 44 are provided with a first folding edge 441, a second folding edge 442 and a third folding edge 443. The second folding edge 442 and the third folding edge 443 are respectively folded from the top and bottom ends of the blades 44 in a unified direction, specifically, folded toward the air inlet 14, and the folding angle is about 15°-35°. Specifically, in the utility model, the folding angle is 30°. This folding angle not only provides a concave cavity on the side of the blade 44 facing the air inlet 14 so that the incoming airflow can be concentrated in the middle of the blade 44, making it easier to blow up the blade 44, but also enhances the rigidity of the blade 44, making it less likely to break during the continuous opening and closing process. The first folded edge 441 extends vertically from the upper end of the second folded edge 442. When the blade 44 is not blown up by the wind and naturally droops, the lower part of the third folded edge 443 just covers the upper part of the first folded edge 441, connecting the end to the end and closing the circular opening 42.

[0044] Furthermore, in order to enable the blade 44 to move on the insect repellent device 4, the blade 44 is provided with a shaft hole 444 on both sides, and is movably mounted on the circular opening 42 through the shaft hole 444. Specifically, the shaft hole 444 is located at the upper part of the left and right sides of the blade 44.

[0045] Further, such as Figure 2 As shown, since the second housing 17 is usually installed outdoors, the air outlet 15 is easily invaded by rainwater, causing rainwater to flow back. To prevent this from happening, the second housing 17 includes a top plate 171, two side plates 172, a bottom plate 173, and a rain shield 174 that extends downwardly from the side of the top plate 171 away from the first housing 16. The length of the top plate 171 is greater than that of the bottom plate 173, so that the air outlet 15 is tilted downward. When wind and rain blow, this can effectively prevent rainwater from entering the fan through the air outlet 15 and causing damage to the motor.

[0046] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features. Any technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of existing technologies should be within the scope of protection determined by the claims.

Claims

1. A square sidewall fan, comprising a housing (1) provided with an air inlet (14) and an air outlet (15), a first protective screen (11) and a second protective screen (12) respectively provided on the air inlet (14) and the air outlet (15), wherein a motor (2) is provided on the first protective screen (11), and an impeller (13) is mounted on the output shaft of the motor (2), characterized in that: A dust suppression device (3) is provided in the housing (1), and the dust suppression device (3) comprises a first nozzle (31), a second nozzle (32), and a water pipe (33) respectively connected to the first nozzle (31) and the second nozzle (32).

2. The square sidewall fan according to claim 1, characterized in that: The first nozzle (31) and the second nozzle (32) are respectively located on the left and right sides of the inner wall of the shell (1) and close to the air outlet (15), and a plurality of spray holes are provided on the outer walls on the opposite sides of the first nozzle (31) and the second nozzle (32), and nozzles (34) are installed on the spray holes.

3. The square sidewall fan according to claim 1, characterized in that: A water processor (35) is installed on the water pipe (33).

4. The square sidewall fan according to claim 1, characterized in that: The housing (1) comprises a first outer shell (16) and a second outer shell (17) that are adapted and connected to each other. A circular air duct (161) is provided in the first outer shell (16). The first protective screen (11) is adapted and installed at the inlet of the circular air duct (161). The impeller (13) is located in the circular air duct (161).

5. The square sidewall fan according to claim 4, characterized in that: An insect-proof device (4) is provided between the first housing (16) and the second housing (17), the insect-proof device (4) comprising a plate (41) and a circular opening (42) provided on the plate (41), the circular opening (42) being in communication with the circular air duct (161) and being provided with a baffle (43) for closing the circular air duct (161).

6. The square sidewall fan according to claim 5, characterized in that: The barrier portion (43) comprises a plurality of movable blades (44), and the blades (44) are all movable in the same direction and open in one direction. When closed, the upper and lower blades (44) are connected end to end.

7. The square sidewall fan according to claim 6, characterized in that: The blade (44) is provided with a first folding edge (441), a second folding edge (442) and a third folding edge (443); the second folding edge (442) is folded inward from the upper end of the blade (44); the first folding edge (441) extends vertically from the upper end of the second folding edge (442); the third folding edge (443) is folded inward from the lower end of the blade (44) and covers the first folding edge (441) of the lower blade (44).

8. The square sidewall fan according to claim 6, characterized in that: The blade (44) is provided with rotating shaft holes (444) on the left and right sides, and is movably mounted on the circular opening (42) through the rotating shaft holes (444).

9. The square sidewall fan according to claim 4, characterized in that: The second housing (17) comprises a top plate (171), two side plates (172), a bottom plate (173) and a rain shield (174) extending obliquely downward from a side of the top plate (171) away from the first housing (16). The length of the top plate (171) is greater than that of the bottom plate (173), so that the air outlet (15) is inclined downward.

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