Waterproof axial flow fan

Abstract

The utility model discloses a waterproof axial flow fan, which relates to the technical field of axial flow fans, and comprises an outer frame, a motor iron core, a tank glue cover, a magnetic ring, a motor shell and fan blades are sequentially arranged in the first accommodating groove, wherein the motor iron core is coaxially sleeved with the tank glue cover, and the tank glue cover is used for sealing and covering the motor iron core; the tank glue cover is coaxially sleeved with the magnetic ring; the motor shell is coaxially connected to the magnetic ring in a sleeving manner; motor waterproof glue is filled in the glue filling cover; a second containing groove is formed in the other side of the outer frame, a PCBA board and a rear cover used for sealing and covering the PCBA board are sequentially arranged in the second containing groove, and PCBA waterproof glue is arranged in the second containing groove. By means of the waterproof axial flow fan, the problem that most axial flow fans in the prior art do not have the waterproof function and cannot work 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 axial flow fan. Background Art

[0002] At present, when an 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 functions and cannot work in humid or water vapor-rich 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, an object of the present invention is to provide a waterproof axial flow fan, aiming to solve the problem that most axial flow fans in the prior art do not have a waterproof function and cannot work in a humid or water vapor-rich environment.

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

[0006] A waterproof axial flow fan, comprising an outer frame, wherein:

[0007] A first accommodating groove is provided on one side of the outer frame, and a motor core, a rubber cover coaxially sleeved on the motor core and used to seal the motor core, a magnetic ring coaxially sleeved on the rubber cover, a motor shell coaxially sleeved on the magnetic ring, and a fan blade coaxially sleeved on the motor shell are sequentially arranged in the first accommodating groove, and a motor waterproof glue is arranged in the rubber cover;

[0008] A second accommodating groove is provided on the other side of the outer frame, and a PCBA board and a back cover for sealing the PCBA board are sequentially arranged in the second accommodating groove, and PCBA waterproof glue is arranged in the second accommodating groove.

[0009] In a further technical solution, in the waterproof axial flow fan, a rubber gasket is provided between the rear cover and the second receiving groove.

[0010] In a further technical solution, in the waterproof axial flow fan, a wiring terminal block is installed on the outer frame, and the wiring terminal block is connected to the PCBA board through a wire.

[0011] In a further technical solution, the waterproof axial flow fan, wherein the outer frame is provided with a support column extending outward from the axis of the first accommodating groove, the support column is a hollow structure with openings at both ends, the bottom opening of which is closed by a bearing cover, a rotating shaft cavity is formed in the support column, and the motor core is coaxially sleeved on the support column;

[0012] A rotating shaft is arranged at the axis center of the motor housing, and one end of the rotating shaft near the second accommodating groove is connected to the cavity wall of the rotating shaft cavity through a second bearing, and one end of the rotating shaft away from the second accommodating groove is connected to the cavity wall of the rotating shaft cavity through a first bearing.

[0013] In a further technical solution, in the waterproof axial flow fan, when the tank rubber cover is coaxially sleeved on the motor core, the top end of the support column passes through the bottom end of the tank rubber cover, and the tank rubber cover is fixed by a first buckle ring arranged on the outer periphery of the top end of the support column.

[0014] In a further technical solution, the waterproof axial flow fan is provided with an annular groove near the second bearing in the rotating shaft cavity, a spring abutting against the second bearing is provided in the annular groove, and a second buckle ring for fixing the second bearing is provided on the outer periphery of the rotating shaft near one end of the second accommodating groove.

[0015] In a further technical solution, in the waterproof axial flow fan, a side of the PCBA board near the bottom of the second accommodating groove is coated with thermal conductive adhesive.

[0016] Compared with the prior art, the utility model provides a waterproof axial flow fan, including an outer frame, wherein: a first accommodating groove is provided on one side of the outer frame, and a motor core, a rubber cover coaxially sleeved on the motor core and used to seal the motor core, a magnetic ring coaxially sleeved on the rubber cover, a motor shell coaxially sleeved on the magnetic ring, and a fan blade coaxially sleeved on the motor shell are sequentially arranged in the first accommodating groove, and a motor waterproof glue is arranged in the rubber cover; a second accommodating groove is provided on the other side of the outer frame, and a PCBA board and a back cover for sealing the PCBA board are sequentially arranged in the second accommodating groove, and a PCBA waterproof glue is arranged in the second accommodating groove. In this way, the waterproof 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 and cannot work in a humid or vaporous environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 The present invention provides a schematic diagram of an exploded view of a waterproof axial flow fan according to an embodiment of the present invention.

[0019] Figure 2 A schematic structural diagram of a waterproof axial flow fan provided in an embodiment of the utility model.

[0020] Figure 3 A cross-sectional view of a waterproof axial flow fan provided in an embodiment of the utility model.

[0021] Figure 4 for Figure 3 A magnified schematic diagram of center A. DETAILED DESCRIPTION

[0022] 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.

[0023] 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.

[0024] 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. When a component is referred to as being "fixed to" or "disposed 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.

[0025] 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.

[0026] Various non-limiting implementations of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] See also Figure 1-Figure 4 The utility model embodiment provides a waterproof axial flow fan, comprising an outer frame 1, wherein:

[0028] A first accommodating groove 11 is provided on one side of the outer frame 1, and a motor core 21, a rubber cover 22 coaxially sleeved on the motor core 21 and used to seal the motor core 21, a magnetic ring 23 coaxially sleeved on the rubber cover 22, a motor shell 24 coaxially sleeved on the magnetic ring 23, and a fan blade 25 coaxially sleeved on the motor shell 24 are sequentially arranged in the first accommodating groove 11, and a motor waterproof glue is provided in the rubber cover 22;

[0029] A second receiving groove 12 is provided at the other side of the outer frame 1 , and a PCBA board 31 and a back cover 32 for sealing the PCBA board 31 are sequentially arranged in the second receiving groove 12 , and PCBA waterproof glue is canned in the second receiving groove 12 .

[0030] In the specific implementation, in this embodiment, the motor core 21 is covered with the rubber cover 22, and motor waterproof glue is arranged in the rubber cover 22. At the same time, PCBA waterproof glue is arranged in the second accommodating groove 12, and the PCBA board 31 is sealed with the back cover 32. In this way, the motor core 21 and the PCBA board 31 can be isolated from the outside air, so that the electrical part cannot contact with water vapor, and a good waterproof effect is achieved.

[0031] Furthermore, in the waterproof axial flow fan, a rubber gasket 33 is provided between the rear cover 32 and the second receiving groove 12 .

[0032] In specific implementation, in this embodiment, by providing the rubber gasket 33 between the back cover 32 and the second receiving groove 12 , it is possible to better prevent external water vapor from entering the second receiving groove 12 , thereby further improving the waterproof effect.

[0033] Furthermore, in the waterproof axial flow fan, a wiring terminal block 4 is installed on the outer frame 1, and the wiring terminal block 4 is connected to the PCBA board 31 through a wire.

[0034] Further, in the waterproof axial flow fan, a support column 13 is formed on the outer frame 1 extending outward from the axis of the first accommodating groove 11, and the support column 13 is a hollow structure with two ends opened, and its bottom opening (i.e., the opening near one end of the second accommodating groove 12) is closed by a bearing cover 37, and a rotating shaft cavity 14 is formed in the support column 13, and the motor core 21 is coaxially sleeved on the support column 13;

[0035] A rotating shaft 26 is provided at the axis center of the motor housing 24. The end of the rotating shaft 26 close to the second accommodating groove 12 is connected to the cavity wall of the rotating shaft cavity 14 through a second bearing 34, and the end of the rotating shaft 26 away from the second accommodating groove 12 is connected to the cavity wall of the rotating shaft cavity 14 through a first bearing 27.

[0036] Furthermore, in the waterproof axial flow fan, when the rubber cover 22 is coaxially sleeved on the motor core 21, the top end of the support column 13 (i.e., the end away from the second accommodating groove 12) passes through the bottom of the rubber cover 22, and the rubber cover 22 is fixed by a first buckle 28 arranged on the outer periphery of the top end of the support column 13.

[0037] Furthermore, in the waterproof axial flow fan, an annular groove 15 is provided in the shaft cavity 14 near the second bearing 34, a spring 36 abutting against the second bearing 34 is provided in the annular groove 15, and a second buckle 35 for fixing the second bearing 34 is provided on the outer periphery of the shaft 26 near one end of the second accommodating groove 12.

[0038] Furthermore, in the waterproof axial flow fan, a side of the PCBA board 31 near the bottom of the second accommodating groove 12 is coated with a thermal conductive adhesive 38 .

[0039] In summary, the waterproof 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 and cannot work in a humid or vaporous environment; that is, the utility model can isolate the motor core and the PCBA board from the outside air, so that the electrical part cannot come into contact with water vapor, thereby achieving a good waterproof effect, extending the service life of the equipment, and ensuring the safety of the equipment.

[0040] 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.

[0041] 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 axial flow fan, comprising an outer frame (1), characterized in that: A first accommodating groove (11) is provided on one side of the outer frame (1), and a motor core (21), a rubber cover (22) coaxially sleeved on the motor core (21) and used to seal the motor core (21), a magnetic ring (23) coaxially sleeved on the rubber cover (22), a motor shell (24) coaxially sleeved on the magnetic ring (23), and a fan blade (25) coaxially sleeved on the motor shell (24) are sequentially arranged in the first accommodating groove (11), and a motor waterproof glue is arranged in the rubber cover (22); A second accommodating groove (12) is provided on the other side of the outer frame (1), a PCBA board (31) and a back cover (32) for sealing the PCBA board (31) are arranged in sequence in the second accommodating groove (12), and PCBA waterproof glue is provided in the second accommodating groove (12).

2. The waterproof axial flow fan according to claim 1, characterized in that: A rubber gasket (33) is provided between the rear cover (32) and the second accommodating groove (12).

3. The waterproof axial flow fan according to claim 2, characterized in that: A wiring terminal seat (4) is installed on the outer frame (1), and the wiring terminal seat (4) is connected to the PCBA board (31) via a wire.

4. The waterproof axial flow fan according to claim 1, 2 or 3, characterized in that: A support column (13) is formed on the outer frame (1) and extends outward from the axis of the first accommodating groove (11). The support column (13) is a hollow structure with two ends open, and the bottom opening is closed by a bearing cover (37). A rotating shaft cavity (14) is formed in the support column (13). The motor core (21) is coaxially sleeved on the support column (13); A rotating shaft (26) is arranged at the axis center of the motor housing (24); an end of the rotating shaft (26) close to the second accommodating groove (12) is connected to the cavity wall of the rotating shaft cavity (14) via a second bearing (34); and an end of the rotating shaft (26) away from the second accommodating groove (12) is connected to the cavity wall of the rotating shaft cavity (14) via a first bearing (27).

5. The waterproof axial flow fan according to claim 4, characterized in that: When the rubber tank cover (22) is coaxially sleeved on the motor core (21), the top end of the support column (13) passes through the bottom end of the rubber tank cover (22), and the rubber tank cover (22) is fixed by a first buckle ring (28) arranged on the outer periphery of the top end of the support column (13).

6. The waterproof axial flow fan according to claim 5, characterized in that: An annular groove (15) is provided in the rotating shaft cavity (14) on one side close to the second bearing (34), a spring (36) abutting against the second bearing (34) is provided in the annular groove (15), and a second retaining ring (35) for fixing the second bearing (34) is provided on the outer periphery of one end of the rotating shaft (26) close to the second accommodating groove (12).

7. The waterproof axial flow fan according to claim 6, characterized in that: A heat-conducting adhesive (38) is coated on one side of the PCBA board (31) near the bottom of the second accommodating groove (12).

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