Waterproof high-air-pressure low-noise axial flow fan

Abstract

The utility model discloses a waterproof axial flow fan with high air pressure and low noise, which relates to the technical field of axial flow fans and comprises a fan frame, the axis of the fan frame extends towards the front side of the fan to form a first supporting body, and the first supporting body is of a hollow structure with one open end and one closed end. The opening end of the first supporting body faces the rear side of the fan, a containing groove is formed in the opening end of the first supporting body, the first supporting body is coaxially sleeved with a magnetic ring, the magnetic ring is coaxially sleeved with fan blades, a motor assembly is arranged in the containing groove, and the motor assembly is connected with the fan blades. The opening of the accommodating groove is connected with a rear cover for sealing and covering the motor assembly, and waterproof glue is filled in the accommodating groove. By means of the waterproof high-air-pressure low-noise axial flow fan, the problem that most axial flow fans in the prior art do not have the waterproof function, and consequently the axial flow fans cannot work stably for a long time in the humid environment or the environment with large water vapor can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of axial flow fans, in particular to a waterproof, high wind pressure and low noise axial flow fan. Background Art

[0002] At present, when the axial flow fan is working, the blades push the air to flow in the same direction as the axis, so it is called an axial flow fan. Axial flow fans are divided into large axial flow fans, medium axial flow fans, and small axial flow fans. The appropriate axial flow fan is selected according to the required place of use. Generally speaking, large axial flow fans are mainly suitable for exhaust in places such as dust and gravel fields; medium axial flow fans are mainly suitable for indoor ventilation and heat dissipation, such as granaries; small axial flow fans are mainly suitable for ventilation and heat dissipation of mechanical equipment, such as electrical cabinets. At present, most axial flow fans in the prior art do not have waterproof function, which makes them unable to work stably for a long time in humid or water vapor environments.

[0003] Therefore, the existing technology still needs to be improved and developed. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a waterproof, high-pressure, low-noise axial flow fan, aiming to solve the problem that most axial flow fans in the prior art do not have a waterproof function, resulting in their inability to work stably for a long time in a humid or vaporous environment.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A waterproof, high-wind-pressure, low-noise axial-flow fan comprises a fan frame, wherein a first support body is formed at the axis of the fan frame extending toward the front side of the fan, the first support body is a hollow structure with one end open and the other end closed, the open end of the first support body faces the rear side of the fan, and a receiving groove is formed in the open end of the first support body, a magnetic ring is coaxially sleeved outside the first support body, a fan blade is coaxially sleeved outside the magnetic ring, a motor assembly is arranged in the receiving groove, a back cover for sealing the motor assembly is connected to the opening of the receiving groove, and waterproof glue is arranged in the receiving groove.

[0007] In a further technical solution, the waterproof high wind pressure low noise axial flow fan, wherein the axis of the bottom of the first support body extends toward the rear side of the fan to form a second support body, the second support body is a hollow structure with one end open and the other end closed, and the open end of the second support body faces the front side of the fan, a shaft cavity is formed in the open end of the second support body, and the motor assembly is coaxially sleeved on the second support body;

[0008] A rotating shaft is arranged at the axis center of the fan blade, one end of the rotating shaft near the rear side of the fan is connected to the cavity wall of the rotating shaft cavity through a first bearing, and one end of the rotating shaft near the front side of the fan is connected to the cavity wall of the rotating shaft cavity through a second bearing.

[0009] In a further technical solution, the waterproof, high-wind-pressure, low-noise axial-flow fan is provided with a first accommodating chamber formed at one end of the rotating shaft cavity near the rear side of the fan, and the first bearing is embedded in the first accommodating chamber; and a second accommodating chamber is formed at one end of the rotating shaft cavity near the front side of the fan, and the second bearing is embedded in the second accommodating chamber.

[0010] In a further technical solution, in the waterproof, high-wind-pressure, low-noise axial-flow fan, a retaining ring for fixing the first bearing is provided on the outer periphery of one end of the rotating shaft near the rear side of the fan.

[0011] In a further technical solution, the waterproof, high-wind-pressure, low-noise axial-flow fan is provided with a spring between the bottom of the first accommodating cavity and the first bearing.

[0012] In a further technical solution, in the waterproof, high wind pressure, low noise axial flow fan, a gasket is further provided between the buckle and the first bearing.

[0013] In a further technical solution, the waterproof, high-wind-pressure, low-noise axial-flow fan, wherein the fan blades are composed of a fan body coaxially sleeved on the magnetic ring, and blades uniformly arranged on the outer peripheral wall of the fan body.

[0014] In a further technical solution, the waterproof high wind pressure low noise axial flow fan, wherein:

[0015] The angle A formed between the end surface of the blade away from one end of the fan body and the transverse section of the fan blade is 15°-25°;

[0016] An angle B formed between the end surface of the blade near one end of the fan body and the transverse section of the fan blade is 15°-28°;

[0017] An angle E formed between the side surface of the blade close to the front side of the fan and the transverse section of the fan blade is 20°-40°.

[0018] In a further technical solution, the waterproof, high-wind-pressure, low-noise axial-flow fan, wherein the fan frame is composed of an inner frame, an outer frame, and booster stators for connecting the inner frame and the outer frame.

[0019] In a further technical solution, the waterproof high wind pressure low noise axial flow fan, wherein:

[0020] The angle C formed between the end surface of the booster stationary blade near one end of the outer frame and the transverse section of the fan blade is 50°-70°;

[0021] An angle D formed between the side surface of the boost stator blade close to the fan blade and the transverse section of the fan blade is 2°-8°.

[0022] Compared with the prior art, the utility model provides a waterproof, high-wind pressure, low-noise axial flow fan, including a fan frame, wherein the axis of the fan frame extends toward the front side of the fan to form a first support body, the first support body is a hollow structure with one end open and the other end closed, the open end of the first support body faces the rear side of the fan, and a receiving groove is formed in the open end of the first support body, the first support body is coaxially sleeved with a magnetic ring outside, the magnetic ring is coaxially sleeved with fan blades outside, a motor assembly is arranged in the receiving groove, a back cover for sealing the motor assembly is connected to the opening of the receiving groove, and a waterproof glue is arranged in the receiving groove. In this way, the waterproof, high-wind pressure, low-noise axial flow fan provided by the utility model can solve the problem that most axial flow fans in the prior art do not have a waterproof function, resulting in their inability to work stably for a long time in a humid or vaporous environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model 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 recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 The present invention provides a schematic diagram of an exploded view of a waterproof, high-pressure, low-noise axial flow fan provided in an embodiment of the present invention.

[0025] Figure 2 A schematic structural diagram of a waterproof, high-wind-pressure, low-noise axial-flow fan provided in an embodiment of the utility model.

[0026] Figure 3 A cross-sectional view of a waterproof, high-wind-pressure, low-noise axial-flow fan provided in an embodiment of the utility model.

[0027] Figure 4 for Figure 3 A magnified schematic diagram of center A.

[0028] Figure 5 for Figure 4 A magnified schematic diagram of point B in the middle.

[0029] Figure 6The present invention provides an internal schematic diagram of a waterproof, high-pressure, low-noise axial flow fan. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0031] In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or an electrical signal connection (meaning that there is both an electrical connection and a signal connection between the two); it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a connection between the two components. When a component is referred to as being "fixed to" or "set on" another element, it can be directly on the other component or there can also be a central component. When a component is considered to be "connected" to another element, it can be directly connected to the other element or there may be a central element at the same time. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] In the description of the present utility model, the terms "include", "including", "have", "contain", etc. are all open terms, which mean including but not limited to. The descriptions with reference to the terms "one embodiment", "a specific embodiment", "some embodiments", "for example", etc. mean that the specific features, structures or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. The order of steps involved in each embodiment is used to schematically illustrate the implementation of the present application, and the order of steps is not limited and can be adjusted appropriately as needed.

[0034] Various non-limiting embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0035] See also Figure 1-Figure 6 The utility model embodiment provides a waterproof, high-wind-pressure, low-noise axial-flow fan, comprising a fan frame 1, wherein a first support body 11 is formed at the axis of the fan frame 1 extending toward the front side of the fan, the first support body 11 is a hollow structure with one end open and the other end closed, the open end of the first support body 11 faces the rear side of the fan, and a receiving groove 12 is formed in the open end of the first support body 11, a magnetic ring 2 is coaxially sleeved outside the first support body 11, a fan blade 3 is coaxially sleeved outside the magnetic ring 2, a motor assembly 4 (including a motor core and a PCBA board) is arranged in the receiving groove 12, a back cover 5 for sealing the motor assembly 4 is connected to the opening of the receiving groove 12, and a waterproof glue is arranged in the receiving groove 12.

[0036] Further, the waterproof high wind pressure low noise axial flow fan, wherein the axis of the bottom of the first support body 11 extends toward the rear side of the fan to form a second support body 13, the second support body 13 is a hollow structure with one end open and the other end closed (the closed end of the second support body 13 is closed by a detachable closing device (such as a cover body, a plug body, etc.)), and the open end of the second support body 13 faces the front side of the fan, and a shaft cavity 14 is formed in the open end of the second support body 13, and the motor assembly 4 is coaxially sleeved on the second support body 13;

[0037] A rotating shaft 61 is arranged at the axis of the fan blade 3 , and one end of the rotating shaft 61 near the rear side of the fan is connected to the cavity wall of the rotating shaft cavity 14 through a first bearing 62 , and one end of the rotating shaft 61 near the front side of the fan is connected to the cavity wall of the rotating shaft cavity 14 through a second bearing 63 .

[0038] Furthermore, in the waterproof, high-wind-pressure, low-noise axial-flow fan, a first accommodating chamber 15 is formed at one end of the rotating shaft cavity 14 near the rear side of the fan, and the first bearing 62 is embedded in the first accommodating chamber 15; a second accommodating chamber 16 is formed at one end of the rotating shaft cavity 14 near the front side of the fan, and the second bearing 63 is embedded in the second accommodating chamber 16.

[0039] Furthermore, in the waterproof, high-wind-pressure, low-noise axial-flow fan, a retaining ring 64 for fixing the first bearing 62 is provided on the outer periphery of one end of the rotating shaft 61 near the rear side of the fan.

[0040] Furthermore, in the waterproof, high-wind-pressure, low-noise axial-flow fan, a spring 65 is further provided between the bottom of the first accommodating cavity 15 and the first bearing 62 .

[0041] Furthermore, in the waterproof, high wind pressure, low noise axial flow fan, a gasket 66 is further provided between the retaining ring 64 and the first bearing 62 .

[0042] During specific implementation, in this embodiment, after the motor assembly 4 is installed into the receiving groove 12, waterproof glue is directly prepared in the receiving groove 12, and the motor assembly 4 is sealed by the back cover 5 to achieve sealing; in this way, the motor assembly 4 of this embodiment can be isolated from the outside air, so that its electrical part cannot come into contact with the external water vapor, and a good sealing and waterproof effect can be achieved.

[0043] Furthermore, in the waterproof, high-wind-pressure, low-noise axial-flow fan, the fan blades 3 are composed of a fan body 31 coaxially sleeved on the magnetic ring 2, and blades 32 uniformly arranged on the outer peripheral wall of the fan body 31; wherein the blades 32 are sickle-shaped (C-shaped).

[0044] In specific implementation, in this embodiment, the blades 32 are sickle-shaped, which can reduce the wind resistance of the waterproof, high-wind pressure, low-noise axial flow fan when it rotates, reduce noise, and increase the wind pressure of the waterproof, high-wind pressure, low-noise axial flow fan when it rotates.

[0045] Furthermore, the waterproof, high wind pressure and low noise axial flow fan, wherein:

[0046] The angle A formed between the end surface of the blade 32 away from the fan body 31 and the transverse section of the blade 3 is 15°-25°; preferably, the angle A is 19°;

[0047] The angle B formed between the end surface of the blade 32 near the fan body 31 and the transverse section of the blade 3 is 15°-28°; preferably, the angle B is 21°;

[0048] An angle E formed between the side surface of the blade 32 close to the front side of the fan and the transverse section of the fan blade 3 is 20°-40°; preferably, the angle E is 30°.

[0049] Furthermore, the waterproof, high-wind-pressure, low-noise axial-flow fan, wherein the fan frame 1 is composed of an inner frame 17, an outer frame 18, and booster blades 19 for connecting the inner frame 17 and the outer frame 18; wherein the first support body 11 is formed by extending from the axis of the inner frame 17 toward the front side of the fan.

[0050] Furthermore, the waterproof, high wind pressure and low noise axial flow fan, wherein:

[0051] The angle C formed between the end surface of the booster stationary blade 19 near the outer frame 18 and the transverse section of the fan blade 3 is 50°-70°; preferably, the angle C is 63°;

[0052] An angle D formed between the side surface of the booster stationary blade 19 close to the fan blade 3 and the transverse section of the fan blade 3 is 2°-8°; preferably, the angle D is 4°.

[0053] In the specific implementation, in this embodiment, by setting angle A to 19°, angle B to 21°, angle E to 30°, angle C to 63°, and angle D to 4°, the fan blades 3 can form a pressurized area and reduce noise when running, thereby achieving high wind pressure and low noise of the axial flow fan.

[0054] To sum up, the waterproof, high-wind pressure, low-noise axial flow fan provided by the utility model can not only achieve high wind pressure and low noise of the axial flow fan, but also achieve the sealing and waterproof effect of the axial flow fan, stable operation, and convenient daily use.

[0055] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be understood that the application of the utility model is not limited to the above-mentioned examples, and those skilled in the art can make improvements or changes according to the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A waterproof, high-pressure, low-noise axial flow fan, comprising a fan frame (1), characterized in that: A first support body (11) is formed at the axis of the fan frame (1) and extends toward the front side of the fan. The first support body (11) is a hollow structure with one end open and the other end closed. The open end of the first support body (11) faces the rear side of the fan, and a receiving groove (12) is formed in the open end of the first support body (11). A magnetic ring (2) is coaxially sleeved outside the first support body (11), and a fan blade (3) is coaxially sleeved outside the magnetic ring (2). A motor assembly (4) is arranged in the receiving groove (12). A rear cover (5) for sealing the motor assembly (4) is connected to the opening of the receiving groove (12), and a waterproof glue is arranged inside the receiving groove (12).

2. The waterproof, high wind pressure, low noise axial flow fan according to claim 1, characterized in that: A second support body (13) is formed at the axis center of the bottom of the first support body (11) extending toward the rear side of the fan, the second support body (13) is a hollow structure with one end open and the other end closed, and the open end of the second support body (13) faces the front side of the fan, a rotating shaft cavity (14) is formed in the open end of the second support body (13), and the motor assembly (4) is coaxially sleeved on the second support body (13); A rotating shaft (61) is arranged at the axis of the fan blade (3); one end of the rotating shaft (61) near the rear side of the fan is connected to the cavity wall of the rotating shaft cavity (14) via a first bearing (62); and one end of the rotating shaft (61) near the front side of the fan is connected to the cavity wall of the rotating shaft cavity (14) via a second bearing (63).

3. The waterproof, high wind pressure, low noise axial flow fan according to claim 2, characterized in that: A first accommodating chamber (15) is formed at one end of the rotating shaft chamber (14) near the rear side of the fan, and the first bearing (62) is embedded in the first accommodating chamber (15); a second accommodating chamber (16) is formed at one end of the rotating shaft chamber (14) near the front side of the fan, and the second bearing (63) is embedded in the second accommodating chamber (16).

4. The waterproof, high wind pressure, low noise axial flow fan according to claim 3, characterized in that: A buckle ring (64) for fixing the first bearing (62) is provided on the outer periphery of one end of the rotating shaft (61) close to the rear side of the fan.

5. The waterproof, high wind pressure, low noise axial flow fan according to claim 4, characterized in that: A spring (65) is also provided between the bottom of the first accommodating cavity (15) and the first bearing (62).

6. The waterproof, high wind pressure, low noise axial flow fan according to claim 5, characterized in that: A gasket (66) is also provided between the buckling ring (64) and the first bearing (62).

7. The waterproof, high wind pressure, low noise axial flow fan according to any one of claims 1 to 6, characterized in that: The fan blade (3) is composed of a fan body (31) coaxially sleeved on the magnetic ring (2), and blades (32) uniformly arranged on the outer peripheral wall of the fan body (31).

8. The waterproof, high wind pressure, low noise axial flow fan according to claim 7, characterized in that: An angle A formed between an end surface of the blade (32) away from one end of the fan body (31) and a transverse cross section of the fan blade (3) is 15°-25°; An angle B formed between an end surface of the blade (32) close to one end of the fan body (31) and a transverse cross section of the fan blade (3) is 15°-28°; An angle E formed between the side surface of the blade (32) close to the front side of the fan and the transverse section of the fan blade (3) is 20°-40°.

9. The waterproof, high wind pressure, low noise axial flow fan according to claim 7, characterized in that: The fan frame (1) is composed of an inner frame (17), an outer frame (18), and booster stationary blades (19) for connecting the inner frame (17) and the outer frame (18).

10. The waterproof, high wind pressure, low noise axial flow fan according to claim 9, characterized in that: An angle C formed between an end surface of the booster stationary blade (19) close to one end of the outer frame (18) and a transverse cross section of the fan blade (3) is 50°-70°; An angle D formed between a side surface of the booster stationary blade (19) close to the fan blade (3) and a transverse section of the fan blade (3) is 2°-8°.

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