Axial flow fan

Abstract

The utility model relates to an axial flow fan which comprises an air duct, an air inlet side panel, an air outlet side panel, a plurality of locking parts and a plurality of supporting legs. The air inlet side panel and the air outlet side panel are fixed to the two end faces of the air cylinder respectively, a plurality of storage grooves are formed in the outer side of the air inlet side panel and / or the air outlet side panel, the locking parts are located in the storage grooves respectively, each supporting leg is rotationally connected to the corresponding storage groove, so that the supporting leg comprises a storage state and an unfolding state, and in the storage state, the locking parts are located in the storage grooves. All or part of the supporting legs are accommodated in the accommodating grooves; in the unfolded state, the free ends of the supporting legs rotate out of the containing grooves, and the locking parts at least lock the supporting legs when the supporting legs are in the unfolded state. According to the axial flow fan, long-time, fixed-point, directional and stable blowing to the upper portion and / or short-distance blowing to the floor can be achieved, and drying efficiency is high and stable.

Description

An axial fan Technical Field

[0001] This utility model relates to the field of fan technology, and in particular to an axial flow fan. Background Technology

[0002] Coastal cities, areas along rivers and lakes, low-lying plains, and old urban areas are all high-risk areas for flooded houses. If a house is not dehumidified promptly after being flooded, the prolonged damp environment can cause a series of problems. In terms of structural safety, prolonged exposure to dampness can cause wood and plasterboard to expand and deform, accelerate the aging of concrete, accelerate the corrosion of steel reinforcement in concrete, and soften and collapse hollow walls, affecting structural stability and reducing earthquake resistance. In terms of health and safety, prolonged exposure to dampness can easily lead to the growth of mold and bacteria and pest infestations, increasing the risk of disease. Economically, prolonged exposure to dampness increases the risk of short circuits, causes paint to peel off easily, and furniture to mold, leading to increased costs for replacing home decoration and building materials. Therefore, dehumidifying and drying flooded houses is becoming increasingly important.

[0003] Using axial fans to blow air through humid spaces and accelerate moisture evaporation is a highly efficient and core treatment solution. In practical use, axial fans typically need to operate for extended periods in a fixed location, such as continuously ventilating waterlogged wood floors for 72 hours to reduce humidity below 60%. Existing axial fans with brackets usually fix the fan angle by increasing the force of the bracket clamping the fan. During fixed-point operation, such as when drying wood floors, the vibration and airflow disturbance generated by the axial fan itself can easily cause the fixing structure to loosen over time, leading to changes in the fan's blowing angle and affecting drying efficiency. Summary of the Invention

[0004] Based on this, the purpose of this utility model is to provide an axial flow fan that, by providing expandable and retractable support feet and locking parts that can stably keep the support feet in the expanded state on the air inlet side panel and / or air outlet side panel, enables the axial flow fan to achieve long-term, fixed-point, directional, and stable blowing towards a position at a certain angle to the ground or above or close to the floor, thus ensuring the drying efficiency of the axial flow fan.

[0005] An axial flow fan includes a fan casing, an inlet side panel, an outlet side panel, several locking parts, and several support legs. The inlet side panel and the outlet side panel are respectively fixed to two end faces of the fan casing. Several storage slots are provided on the outer side of the inlet side panel and / or the outlet side panel. Several locking parts are respectively located in several storage slots. Each support leg is rotatably connected to each storage slot, so that the support leg has a retracted state and an extended state. In the retracted state, the storage slot accommodates all or part of the support leg. In the extended state, the free end of the support leg rotates out of the storage slot. The locking parts lock the support leg at least when the support leg is in the extended state.

[0006] The axial flow fan of this utility model, by providing expandable and retractable support feet and locking parts that can stably keep the support feet in the expanded state on the air inlet side panel and / or air outlet side panel, enables the axial flow fan to achieve long-term, fixed-point, directional, and stable blowing towards a position at a certain angle to the ground or above or close to the floor, ensuring the drying efficiency of the axial flow fan.

[0007] Furthermore, it includes four locking parts and four supporting feet. The outer side of the air inlet side panel or the air outlet side panel is provided with four storage slots, which are rectangularly distributed on the air inlet side panel or the air outlet side panel.

[0008] Furthermore, it includes eight locking parts and eight supporting feet. The outer sides of the air inlet side panel and the air outlet side panel are respectively provided with four storage slots, and the four storage slots on the air inlet side panel and the air outlet side panel are all rectangularly distributed.

[0009] Furthermore, the air inlet side panel and / or the air outlet side panel are also provided with several accessory mounting slots. By providing accessory mounting slots, the axial fan can be fitted with additional support accessories to match more application scenarios. For example, by mounting support rods on the accessory mounting slots, the height at which the axial fan can be erected when blowing towards the floor can vary depending on the length of the support rod. When the axial fan is blowing upwards, the length of the support rod can be increased to get closer to the object that needs drying, making it suitable for more usage scenarios.

[0010] Furthermore, it also includes a plurality of first foot pads, each of which is detachably fixed to the end of a plurality of supporting legs. In the unfolded state, the first foot pads are located at the ends of the supporting legs outside the storage slots. The first foot pads serve two purposes: firstly, they provide anti-slip and shock absorption; secondly, when the first foot pads wear out, they can be directly replaced instead of replacing the supporting legs, thus reducing subsequent maintenance costs and difficulties.

[0011] Furthermore, the air inlet side panel and / or the air outlet side panel are provided with through holes communicating with the air duct, and one end of the storage groove is open and communicates with the through holes. Having one end of the storage groove open and communicating with the through holes helps to release the upper limit of the support leg's length and increase the adjustment range of the axial fan's blowing angle.

[0012] Furthermore, the locking part includes an elastic inclined plate located between the support leg and the bottom of the storage groove. The elastic inclined plate is positioned near one end of the support leg, and the end face of one end of the support leg includes a first inclined surface and a second inclined surface. The first inclined surface faces outwards from the storage groove, and the second inclined surface faces the bottom of the storage groove. In the unfolded state, the elastic inclined plate abuts against the first inclined surface to lock; in the retracted state, the elastic inclined plate abuts against the second inclined surface to lock. This design of the elastic inclined plate not only locks the support leg in both the retracted and unfolded states but also helps to buffer the vibrations generated by the axial fan during operation.

[0013] Furthermore, the bottom of the outlet side panel extends downwards from the air duct at a lesser height than the bottom of the inlet side panel. This different downward extension height between the bottom of the outlet and inlet side panels allows the axial fan to tilt towards the ground when placed upright, enabling it to stably blow air downwards at an angle, making it more suitable for applications involving ventilation and drying of the ground.

[0014] Furthermore, it also includes several second foot pads, which are detachably fixed to the bottom of the air inlet side panel and the bottom of the air outlet side panel. The second foot pads serve two purposes: firstly, they provide anti-slip and shock absorption; secondly, when the second foot pads wear out, they can be directly replaced without causing wear to the air inlet and air outlet side panels, thus reducing subsequent maintenance costs and difficulties.

[0015] Furthermore, the outer side of the air inlet side panel and / or the air outlet side panel is provided with a plurality of limiting grooves, which are respectively located at the bottom of the plurality of storage grooves, and the bottom of the plurality of locking parts cooperates with the plurality of limiting grooves. By setting the limiting grooves to limit the locking parts, it is beneficial to ensure the stability of the locking effect of the locking parts.

[0016] The beneficial effects of this application are as follows:

[0017] 1. By setting up expandable and retractable support feet and locking parts that can securely keep the support feet in the expanded state on the air inlet side panel and / or air outlet side panel, the axial fan can achieve long-term, fixed-point, directional, and stable blowing towards a position at a certain angle to the ground, or above or close to the floor, ensuring the drying efficiency of the axial fan.

[0018] 2. By setting up accessory mounting slots, axial fans can be fitted with additional support accessories to match more application scenarios. For example, by mounting support rods on the accessory mounting slots, the height at which the axial fan can be erected when blowing towards the floor can vary depending on the length of the support rods. When the axial fan is blowing upwards, the length of the support rods can be increased to get closer to the objects that need drying, making it suitable for more usage scenarios.

[0019] 3. By setting the first foot pad, it serves two purposes: it prevents slipping and absorbs shock. Furthermore, when the first foot pad wears out, it can be replaced directly instead of replacing the support foot, thus reducing subsequent maintenance costs and difficulties.

[0020] 4. By opening one end of the storage slot and connecting it with the through hole, it is beneficial to release the upper limit of the support leg length and increase the adjustment range of the axial fan blowing angle.

[0021] 5. The design of the elastic inclined plate not only locks the support feet in the retracted and unfolded states, but also helps to buffer the vibration generated by the axial fan during its operation.

[0022] 6. By designing different downward extension heights at the bottom of the air outlet side panel and the bottom of the air inlet side panel, the axial fan tilts towards the ground when placed upright, thus enabling the axial fan to stably blow downwards at an angle when placed upright, making it more suitable for applications involving ventilation and drying of the ground.

[0023] 7. By setting up a second foot pad, it serves two purposes: it prevents slipping and reduces shock. Furthermore, when the second foot pad wears out, it can be directly replaced without causing wear to the air intake and air outlet side panels, thus reducing subsequent maintenance costs and difficulties.

[0024] 8. Setting a limit groove to limit the locking part helps to ensure the stability of the locking effect of the locking part.

[0025] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0026] Figure 1 is a schematic diagram of the structure of an axial flow fan according to an embodiment;

[0027] Figure 2 is a partial structural schematic diagram of an axial flow fan according to an embodiment;

[0028] Figure 3 is a schematic diagram of a partial cross-sectional structure of an axial fan according to an embodiment;

[0029] Figure 4 is a schematic diagram of the axial fan described in one embodiment, showing the usage state with only the two support legs deployed.

[0030] Figure 5 is a schematic diagram of the axial fan described in one embodiment, showing the usage state with only the two support legs extended.

[0031] Figure 6 is a schematic diagram of the structure of an axial flow fan according to an embodiment;

[0032] Figure 7 is a schematic diagram of the usage state of the axial flow fan and four support rods according to an embodiment;

[0033] Figure 8 is a schematic diagram of the axial flow fan and two support rods used in one embodiment.

[0034] Figure 9 is a schematic diagram of the axial flow fan and two support rods used in one embodiment.

[0035] Figure 10 is a schematic diagram of the structure of an axial flow fan according to an embodiment;

[0036] Figure 11 is a partial structural schematic diagram of an axial flow fan according to an embodiment;

[0037] Figure 12 is a partial cross-sectional structural diagram of an axial flow fan according to an embodiment;

[0038] Figure 13 is a schematic diagram of the axial fan of an embodiment in use with only the two support legs deployed.

[0039] Figure 14 is a schematic diagram of the axial fan of an embodiment in use with only the two support legs deployed.

[0040] Figure 15 is a schematic diagram of the structure of an axial flow fan according to an embodiment;

[0041] Figure 16 is a schematic diagram of the usage state of the axial flow fan and four support rods according to an embodiment;

[0042] Figure 17 is a schematic diagram of the axial flow fan and two support rods used in one embodiment.

[0043] Figure 18 is a schematic diagram of the axial flow fan and two support rods used in one embodiment.

[0044] The components include: air duct 1, switch 2, air outlet side panel 3, first storage slot 301, first limiting slot 302, first accessory assembly slot 303, air inlet side panel 4, second storage slot 401, second limiting slot 402, second accessory assembly slot 403, locking part 5, elastic inclined plate 501, support foot 6, first inclined surface 601, second inclined surface 602, rotating shaft 7, first foot pad 8, and second foot pad 9. Detailed Implementation

[0045] It should be understood that the described embodiments are merely some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of the embodiments of this application.

[0046] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0047] In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0048] Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0049] It should be understood that the embodiments of this application are not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from their scope. The scope of the embodiments of this application is limited only by the appended claims.

[0050] This utility model embodiment provides an axial flow fan, as shown in Figures 1 to 3, including a fan casing 1, a motor, fan blades, a switch 2, an air outlet side panel 3, an air inlet side panel 4, four locking parts 5, four support feet 6, four rotating shafts 7, four first foot pads 8, and four second foot pads 9.

[0051] The fan duct 1 is cylindrical, with the motor and fan blades located inside. The motor is fixed to the inner wall of the fan duct 1, and the fan blades are sleeved and fixed on the output shaft of the motor. The central axis of the fan blades is collinear with the output shaft of the motor. When the output shaft of the motor rotates, the fan blades rotate with the output shaft. The switch 2 is fixed on the outer side of the fan duct 1 and is electrically connected to the motor. The switch 2 controls the motor to start running, stop running, and adjust the power of the motor. In this embodiment, the motor rotates only in one direction when the axial fan is running. When the fan blades rotate, the side on which the air is pushed out by the fan blades is the air outlet side of the fan duct 1, and the side on which the air is drawn into the fan duct 1 is the air inlet side of the fan duct 1. When the axial fan of this embodiment is used upright, the fan duct 1 is located between the switch 2 and the ground. Therefore, the side where the switch 2 is located when used upright is the top, and the side closer to the ground is the bottom.

[0052] The inner side of the air outlet side panel 3 is fixed to the end face of the air outlet side of the air duct 1, and the inner side of the air inlet side panel 4 is fixed to the end face of the air inlet side of the air duct 1. Both the air outlet side panel 3 and the air inlet side panel 4 have through holes in the middle that communicate with the inner cavity of the air duct 1. A guide net is connected to the inner wall of the through hole. The outer side of the air outlet side panel 3 has four first storage slots 301. In this embodiment, the four first storage slots 301 are rectangularly distributed on the air outlet side panel 3. The directions of the four first storage slots 301 are intersecting the central axis of the air duct 1. In this embodiment, the end of the first storage slot 301 facing the central axis of the air duct 1 has an opening. The first storage slot 301 communicates with the through hole through the opening to release the upper limit of the length of the support leg 6. In other embodiments, the first storage slot 301 can also be a conventional closed slot. The bottom of the first storage slot 301 in this embodiment is also provided with a first limiting slot 302. The first limiting slot 302 is set near the end of the first storage slot 301 that does not have an opening.

[0053] In this embodiment, the bottom of the air outlet side panel 3 extends downwards from the air duct 1 at a height less than the bottom of the air inlet side panel 4 extends downwards from the air duct 1. This causes the axial fan to tilt towards the ground when placed upright, thus enabling it to stably blow air downwards at an angle, making it more suitable for applications involving ventilation and drying of the ground. The bottom of the air outlet side panel 3 and the bottom of the air inlet side panel 4 are each detachably fixed with two second foot pads 9. These serve two purposes: firstly, to prevent slipping and to reduce shock; secondly, the second foot pads 9 can be directly replaced when worn, without causing wear on the bottom of the air outlet side panel 3 and the air inlet side panel 4, thus reducing subsequent maintenance costs and difficulties.

[0054] The four locking parts 5 respectively cooperate with the four first limiting grooves 302. In this embodiment, the locking parts 5 are made of elastic material. The bottom surface of the locking parts 5 is fixed to the bottom surface of the first limiting grooves 302. The top of the locking parts 5 includes an elastic inclined plate 501. The elastic inclined plate 501 is located between the support foot 6 and the bottom of the first storage groove 301. The elastic inclined plate 501 is inclined from the end of the first storage groove 301 without an opening to the end with an opening. In this embodiment, the locking parts 5 lock the support foot 6 through the elastic inclined plate 501, so that the support foot 6 is in a certain specific state.

[0055] The four support feet 6 are positioned corresponding to the four first storage slots 301. The four support feet 6 are rotatably connected to the inner walls of the four first storage slots 301 via a rotating shaft 7. The rotating shaft 7 is located near the closed end of the first storage slot 301, and the direction of extension of the rotating shaft 7 is perpendicular to both the direction of extension of the support feet 6 and the direction of extension of the first storage slots 301. In this embodiment, the end face of the support foot 6 near the closed end of the first storage slot includes a first inclined surface 601 and a second inclined surface 602. The first inclined surface 601 faces outward from the first storage slot 301, and the second inclined surface 602 faces the bottom of the first storage slot 301. In this embodiment, only two inclined surfaces are provided on the support foot 6. In other embodiments, the support foot 6 can be provided with more inclined surfaces to achieve locking in more states, or it can be locked only in the unfolded state.

[0056] During the rotation of the support leg 6 around the pivot 7, the support leg 6 includes a retracted state and an extended state. In the retracted state, the direction of extension of the support leg 6 is parallel to the direction of extension of the first storage groove 301. The elastic inclined plate 501 abuts against the second inclined surface 602 and the elastic inclined plate 501 is in a compressed state to securely lock the support leg 6 in the retracted state. In this embodiment, the length of the support leg 6 is greater than the length of the first storage groove 301. In the retracted state, the free end of the support leg 6 is located in the through hole of the air outlet side panel 3. Therefore, the first storage groove 301 only accommodates a portion of the support leg 6. In other embodiments, when the length of the support leg 6 is less than the length of the first storage groove 301, the first storage groove 301 can accommodate the entire support leg 6. In addition, it should be noted that the "storage groove accommodating the portion of the support leg" mentioned in this application is not limited to the case where the length of the support leg 6 is greater than the length of the first storage groove 301 provided in this embodiment. The two ends of the support leg 6 can also protrude partially according to design requirements. Outside the first storage slot, it is clear that when there are multiple different degrees of unfolded state, the folded state should be the state in which the storage slot accommodates the support leg to the greatest extent. In the unfolded state, the direction of extension of the support leg 6 in this embodiment is perpendicular to the direction of extension of the first storage slot 301. The elastic inclined plate 501 abuts against the first inclined surface 601, and the elastic inclined plate 501 is in a compressed state to securely lock the support leg 6 in the unfolded state. This embodiment only provides one unfolded state. In other embodiments, the angle of the unfolded state can be selected as needed and is not limited to the vertical angle of this embodiment. However, it should be noted that the free end of the support leg 6 (in this embodiment, the end located in the through hole) should at least partially be located outside the storage slot in the unfolded state. In addition, it should be noted that in other embodiments, when the support leg 6 is in the folded state and the unfolded state, the elastic inclined plate 501 can be in a natural state without elastic deformation, and different selections can be made according to different specific designs.

[0057] In actual use, when the user pries the support leg 6 outward in the retracted state, causing the support leg 6 to rotate around the pivot 7, the protrusion formed by the first and second inclined surfaces will compress the elastic inclined plate 501. That is, the user needs to overcome the elastic force of the elastic inclined plate 501 to switch the support leg 6 from the retracted state to the extended state. The same applies when switching the support leg 6 from the extended state to the retracted state, so it will not be described in detail. In particular, in the extended state, the elastic inclined plate 501 of the locking part 5 can also buffer the vibration generated by the axial fan during its operation. It should be noted that when using the support leg 6, it is not limited to extending all four support legs 6 at the same time. For example, please refer to Figures 4 and 5, only two support legs can be extended.

[0058] The four first foot pads 8 are detachably fixed to the ends of the four support feet 6 away from the pivot 7. The first foot pads 8 serve two purposes: firstly, they prevent slippage and absorb shock; secondly, when the first foot pads 8 wear out, they can be replaced directly instead of replacing the support feet 6, thus reducing subsequent maintenance costs and difficulties.

[0059] An embodiment of this utility model provides an axial flow fan with an extendable and retractable support leg 6 on the air outlet side panel 3. The support leg 6 is stably extended with the locking part 5, enabling the axial flow fan to blow air at a fixed point and direction at a certain angle to the ground or at close range to the floor for a long time, thus ensuring the drying efficiency of the axial flow fan.

[0060] To further improve the applicability of the axial fan, in one embodiment, the support leg 6 also includes a telescopic portion (not shown), which allows the support leg 6 to extend and retract. By using the telescopic support leg 6, when the axial fan is supported by the support leg 6, the blowing angle of the axial fan can be finely adjusted by adjusting the length of each support leg 6, which helps to ensure that the axial fan operates at its highest drying efficiency and guarantees drying efficiency.

[0061] To further improve the applicability of the axial flow fan, in one embodiment, as shown in Figure 6, four first accessory mounting slots 303 are provided on the outer side of the air outlet side panel 3. The first accessory mounting slots 303 are used to mate with accessories. For example, as shown in Figure 7, four support rods that mate with the four first accessory mounting slots can be provided, so that the height at which the axial flow fan can be mounted when blowing on the floor varies depending on the length of the support rods. Furthermore, by using support rods of different lengths or adjustable length support rods, the axial flow fan can be adapted to more usage scenarios. As shown in Figures 8 and 9, only two support rods can be installed. In this case, the axial flow fan contacts the ground through the ends of the two support rods and the fan housing, allowing for a larger tilt angle. The tilt angle of the axial flow fan can be adjusted by adjusting the length of the support rods. In use, the number and length of the support rods can be selected according to actual usage needs.

[0062] In a further embodiment, referring to Figures 10-12, the axial fan also includes four additional locking parts 5, four support feet 6, and four first foot pads 8. The outer side of the air inlet side panel 4 is also provided with four second storage slots 401. In this embodiment, the four second storage slots 401 are rectangularly distributed on the air inlet side panel 4. The directions in which the four second storage slots 401 extend intersect with the central axis of the air duct 1. In this embodiment, the end of the second storage slot 401 facing the central axis of the air duct 1 is provided with an opening. The second storage slot 401 communicates with the through hole through the opening. The bottom of the second storage slot 401 in this embodiment is also provided with a second limiting slot 402. The second limiting slot 402 is provided near the end of the second storage slot 401 that is not provided with an opening.

[0063] The structure of the additional four locking parts 5 in this embodiment is the same as that in the previous embodiment, so it will not be described again. The additional four locking parts 5 in this embodiment respectively cooperate with the four second limiting grooves 402. Specifically, the bottom surface of the locking part 5 is fixed to the bottom surface of the second limiting groove 402, and the elastic inclined piece 501 is inclined from the end of the second receiving groove 401 without an opening to the end with an opening;

[0064] The structure of the four additional support legs 6 in this embodiment is the same as that in the previous embodiment, so it will not be described again. The positions of the four additional support legs 6 in this embodiment correspond to the positions of the four second storage slots 401. The four support legs 6 are rotatably connected to the inner walls of the four second storage slots 401 through a rotating shaft 7. The rotating shaft 7 is located near the unopened end of the second storage slot 401, and the direction of extension of the rotating shaft 7 is perpendicular to the direction of extension of both the support legs 6 and the second storage slots 401. The first inclined surface 601 and the second inclined surface 602 of the additional support legs 6 in this embodiment are located near the unopened end of the second storage slot 401. The first inclined surface 601 faces the outside of the second storage slot 401, and the second inclined surface 602 faces the bottom of the second storage slot 401.

[0065] During the rotation of the additional support leg 6 around the pivot 7 in this embodiment, the support leg 6 includes a retracted state and an extended state. In the retracted state, the direction in which the support leg 6 extends is parallel to the direction in which the second storage groove 401 extends, the elastic inclined plate 501 abuts against the second inclined surface 602 and the elastic inclined plate 501 is in a compressed state to lock the support leg 6 in the retracted state. In the extended state, the direction in which the support leg 6 extends is perpendicular to the direction in which the second storage groove 401 extends, the elastic inclined plate 501 abuts against the first inclined surface 601 and the elastic inclined plate 501 is in a compressed state to lock the support leg 6 in the extended state. The usage process of the additional support leg 6 in this embodiment is the same as that in the previous embodiment. When using it, it is not limited to unfolding all four support legs 6 at the same time. For example, please refer to Figures 13 and 14, only two support legs can also be unfolded.

[0066] In this embodiment, the four additional first foot pads 8 are detachably fixed to the ends of the four support feet 6 away from the pivot 7.

[0067] In this embodiment, support feet 6 that can be unfolded and retracted are provided on the air outlet side panel 3 and the air inlet side panel 4. With the locking part 5, the support feet 6 can be stably kept in the unfolded state, so that the axial fan can blow steadily towards a position at a certain angle to the ground, or above or close to the floor for a long time, ensuring the drying efficiency of the axial fan.

[0068] To further improve the applicability of the axial flow fan, in one embodiment, as shown in Figure 15, four second accessory mounting slots 403 are also provided on the outer side of the air inlet side panel 4. The second accessory mounting slots 403 are used in the same way as the first accessory mounting slots 303. For example, as shown in Figure 16, four support rods that cooperate with the four second accessory slots 403 can be provided. As shown in Figures 17 and 18, only two support rods can be installed, making the axial flow fan suitable for more application scenarios. The setting of the second accessory mounting slots 403 allows the distance and angle between the axial flow fan and the ceiling or roof to be adjusted according to the length of the support rods when blowing on the ceiling or roof, which is beneficial to achieving the best drying efficiency when the axial flow fan blows on the ceiling or roof.

[0069] The beneficial effects of this application are as follows:

[0070] 1. By setting up expandable and retractable support feet and locking parts that can securely keep the support feet in the expanded state on the air inlet side panel and / or air outlet side panel, the axial fan can achieve long-term, fixed-point, directional, and stable blowing towards a position at a certain angle to the ground, or above or close to the floor, ensuring the drying efficiency of the axial fan.

[0071] 2. By setting up accessory mounting slots, axial fans can be fitted with additional support accessories to match more application scenarios. For example, by mounting support rods on the accessory mounting slots, the height at which the axial fan can be erected when blowing towards the floor can vary depending on the length of the support rods. When the axial fan is blowing upwards, the length of the support rods can be increased to get closer to the objects that need drying, making it suitable for more usage scenarios.

[0072] 3. By setting the first foot pad, it serves two purposes: it prevents slipping and absorbs shock. Furthermore, when the first foot pad wears out, it can be replaced directly instead of replacing the support foot, thus reducing subsequent maintenance costs and difficulties.

[0073] 4. By opening one end of the storage slot and connecting it with the through hole, it is beneficial to release the upper limit of the support leg length and increase the adjustment range of the axial fan blowing angle.

[0074] 5. The design of the elastic inclined plate not only locks the support feet in the retracted and unfolded states, but also helps to buffer the vibration generated by the axial fan during its operation.

[0075] 6. By designing different downward extension heights at the bottom of the air outlet side panel and the bottom of the air inlet side panel, the axial fan tilts towards the ground when placed upright, thus enabling the axial fan to stably blow downwards at an angle when placed upright, making it more suitable for applications involving ventilation and drying of the ground.

[0076] 7. By setting up a second foot pad, it serves two purposes: it prevents slipping and reduces shock. Furthermore, when the second foot pad wears out, it can be directly replaced without causing wear to the air intake and air outlet side panels, thus reducing subsequent maintenance costs and difficulties.

[0077] 8. Setting a limit groove to limit the locking part helps to ensure the stability of the locking effect of the locking part.

[0078] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. An axial flow fan characterised in that, The device includes a duct, an air inlet side panel, an air outlet side panel, several locking parts, and several supporting legs. The air inlet side panel and the air outlet side panel are respectively fixed to the two end faces of the duct. Several storage slots are provided on the outer side of the air inlet side panel and / or the air outlet side panel. Several locking parts are respectively located in several storage slots. Each supporting leg is rotatably connected to each storage slot, so that the supporting leg has a retracted state and an extended state. In the retracted state, the storage slot accommodates all or part of the supporting leg. In the extended state, the free end of the supporting leg rotates out of the storage slot. The locking parts lock the supporting leg at least when the supporting leg is in the extended state.

2. The axial fan according to claim 1, characterized in that It includes four locking parts and four supporting feet. The outer side of the air inlet side panel or the air outlet side panel is provided with four storage slots, which are rectangularly distributed on the air inlet side panel or the air outlet side panel.

3. The axial fan according to claim 1, characterized in that It includes eight locking parts and eight supporting feet. The outer sides of the air inlet side panel and the air outlet side panel are respectively provided with four storage slots, and the four storage slots on the air inlet side panel and the air outlet side panel are all rectangularly distributed.

4. The axial fan according to claim 1, wherein The air inlet side panel and / or the air outlet side panel are also provided with several accessory assembly slots.

5. The axial fan according to claim 1, wherein It also includes a plurality of first foot pads, which are detachably fixed to the ends of the plurality of supporting legs. In the unfolded state, the first foot pads are located at the ends of the supporting legs located outside the storage slot.

6. The axial fan according to claim 1, wherein The air inlet side panel and / or the air outlet side panel are provided with through holes communicating with the air duct, and one end of the storage groove is connected to the through holes.

7. The axial fan according to claim 1, wherein The locking part includes an elastic inclined plate located between the support foot and the bottom of the storage groove. The elastic inclined plate is disposed near one end of the support foot. The end face of one end of the support foot includes a first inclined surface and a second inclined surface. The first inclined surface is disposed towards the outside of the storage groove, and the second inclined surface is disposed towards the bottom of the storage groove. In the unfolded state, the elastic inclined plate abuts against the first inclined surface, and in the stored state, the elastic inclined plate abuts against the second inclined surface.

8. The axial fan of claim 1, wherein, The bottom of the air outlet side panel extends downwards from the air duct at a height less than the bottom of the air inlet side panel extends downwards from the air duct.

9. The axial fan according to claim 8, characterized in that It also includes several second foot pads, which are detachably fixed to the bottom of the air inlet side panel and the bottom of the air outlet side panel, respectively.

10. The axial fan according to claim 1, characterized in that The outer side of the air inlet side panel and / or the air outlet side panel is provided with a plurality of limiting grooves, the plurality of limiting grooves being located at the bottom of the plurality of storage grooves respectively, and the bottom of the plurality of locking parts cooperating with the plurality of limiting grooves.

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