Disc type motor cooling fan

Abstract

The disc type motor cooling fan comprises a fan frame, fan blades, a protection structure and a disc type motor assembly, a mounting part is integrally formed in the fan frame, a through hole is formed in the mounting part, the fan blades are arranged in the fan frame and arranged on the mounting part in a sleeving mode, and a protection groove is formed in the side, close to the fan blades, of the mounting part. The side, close to the fan frame, of the fan blade extends into the protection groove, the protection structure is arranged in the installation part, the disc type motor assembly is arranged in the protection structure, and the side, close to the fan blade, of the disc type motor assembly sequentially penetrates out of the protection structure and the installation part and then is connected with the fan blade. The utility model has the advantages of good waterproof and dustproof performance, simple structure, reasonable design and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of cooling fans, and particularly relates to a disc motor cooling fan. Background Art

[0002] As the name implies, the cooling fan mainly plays a role in heat dissipation. Its working principle is achieved by energy conversion, that is, electrical energy is converted into electromagnetic energy, then into mechanical energy, and then into kinetic energy. It is widely used in various devices such as computers, communication products, optoelectronic products, consumer electronic products, automotive electronic devices, switches, etc. However, with the expansion of the application scope, there is also a demand for the waterproof performance of the cooling fan.

[0003] For example, the patent application No. 202221199014.7 discloses a waterproof cooling fan, which includes: a fan frame, the fan frame includes a hollow frame body, an installation plate is arranged in the middle of the frame body, and a plurality of static blades are evenly distributed between the frame body and the installation plate. One end of each of the plurality of static blades is fixed on the frame body, and the other end of each of the plurality of static blades is fixed on the installation plate. A middle tube is coaxially arranged in the installation plate; a stator assembly, the stator assembly is installed on the top surface of the installation plate and the stator assembly is sleeved on the middle tube, and the stator assembly extends out of the installation plate downward and then extends to the outside of the fan frame; a waterproof assembly, the waterproof assembly is sleeved on the stator assembly and the waterproof assembly is used to seal the stator assembly; and a rotor assembly, the rotor assembly is sleeved on the waterproof assembly, and the lower end of the rotor assembly sequentially passes through the waterproof assembly, the stator assembly and the middle tube downward and then extends to the lower part of the fan frame. This waterproof cooling fan can achieve waterproofing, but its external rotor metal parts are prone to rust, and it is prone to water ingress and failure when installed upside down outdoors. Content of the Utility Model

[0004] The utility model provides a disc motor cooling fan with good protection effect to solve the deficiencies in the prior art.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A disc motor cooling fan, comprising:

[0007] A fan frame, an installation part is integrally formed in the fan frame, and through holes are arranged on the installation part;

[0008] Fan blades, arranged in the fan frame and sleeved on the installation part. A protective groove is arranged on one side of the installation part close to the fan blades, and one side of the fan blades close to the fan frame extends into the protective groove;

[0009] A protection structure, arranged in the installation part; and

[0010] The disc motor assembly is arranged inside the protective structure. The side of the disc motor assembly close to the fan blade passes through the protective structure and the mounting part in sequence and then is connected to the fan blade.

[0011] Preferably, the protective structure includes a housing and a rear cover. The housing is installed inside the mounting part. The disc motor assembly is installed inside the housing, and the side of the disc motor assembly away from the fan blade extends to the outside of the housing. The side of the disc motor assembly close to the fan blade passes through the protective structure and the mounting part in sequence and then is connected to the fan blade. The rear cover is buckled on the side of the disc motor assembly away from the fan blade.

[0012] Preferably, the disc motor assembly includes a bearing seat, a first bearing, a second bearing, a rotating shaft, a rotor disc, a permanent magnet, a PCB winding, and a PCB board. The bearing seat is riveted inside the right part of the housing and passes through the housing. Both the first bearing and the second bearing are installed in the bearing seat. The rotor disc is arranged inside the housing and is located on the side of the bearing seat away from the fan blade. The permanent magnet is installed inside the rotor disc. The PCB winding is arranged outside the housing and is located on the side of the rotor disc away from the fan blade. The PCB board is arranged outside the housing and is located on the side of the PCB winding away from the fan blade. The rear cover is buckled on the side of the PCB board away from the fan blade. The rotating shaft passes through the PCB board, the PCB winding, the rotor disc, the first bearing, the second bearing, the bearing seat, and the mounting part in sequence and then is connected to the fan blade.

[0013] Preferably, it further includes a circlip. The circlip is sleeved on the rotating shaft and is located on the side of the first bearing away from the fan blade.

[0014] Preferably, at least one stationary vane is arranged between the mounting part and the fan frame. A wire groove is arranged on the side of the stationary vane close to the PCB board. The lead of the PCB board passes through the rear cover and is arranged in the wire groove. A buckle is arranged at the connection of the wire groove and the fan frame. The buckle is buckled on the lead of the PCB board. The wire groove is filled with a first waterproof glue layer.

[0015] Preferably, a second waterproof glue layer is arranged on the outer side of the rear cover.

[0016] Adopting the above technical solutions, the utility model has the following beneficial effects:

[0017] (1) The utility model is provided with a protective structure. Structures such as the bearing seat, the first bearing, the second bearing, the rotating shaft, the rotor disc, and the permanent magnet are all located inside the protective structure, and the waterproof performance is better. Moreover, the wire groove of the utility model is filled with a first waterproof glue layer, and a second waterproof glue layer is arranged on the outer side of the rear cover. The first waterproof glue layer and the second waterproof glue layer can further improve the waterproof performance;

[0018] (2) On one side of the installation part of the present utility model close to the fan blade, there is a protective groove. One side of the fan blade close to the fan frame extends into the protective groove. The protective groove and the fan blade are arranged in an interleaved manner, which can prevent moisture from entering the interior of the present utility model between the fan blade and the installation part, further improving the protection performance, being waterproof and dustproof, with a simple structure and reasonable design;

[0019] In summary, the present utility model has the advantages of good waterproof and dustproof performance, simple structure, and reasonable design. Brief Description of the Drawings

[0020] Figure 1 is a structural schematic diagram of the present utility model;

[0021] Figure 2 is Figure 1 an exploded view of

[0022] Figure 3 is a structural schematic diagram of the present utility model in another direction;

[0023] Figure 4 is Figure 3 a cross-sectional view taken along the A-A direction in

[0024] Figure 5 is a structural schematic diagram of the fan frame of the present utility model in another direction;

[0025] Figure 6 is a structural schematic diagram of the fan frame of the present utility model in yet another direction. Detailed Description of the Specific Embodiment

[0026] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model.

[0027] Generally, the components of the embodiments of the present utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model.

[0028] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0029] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0030] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected with" 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 or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. 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 situations.

[0031] Embodiment 1

[0032] In this embodiment, a disc motor cooling fan is proposed in this embodiment, which protects structures such as the rotor and is arranged inside to further improve the waterproof and dustproof performance. After verification, the waterproof and dustproof performance can reach IP68.

[0033] As Figures 1-6 shown, in an embodiment of the present utility model, the disc motor cooling fan of the present utility model includes a fan frame 1, fan blades 2, a protective structure, and a disc motor assembly. An installation part 3 is integrally formed inside the fan frame 1. A through hole 4 is provided on the installation part 3. The installation part 3 is mainly used for installing components such as the protective structure. The installation part 3 is generally a structure similar to a cylinder, but there is a step-like setting on the cylinder structure. The through hole 4 is located on the side of the cylinder structure close to the fan blades 2. The fan blades 2 are arranged inside the fan frame 1 and sleeved on the installation part 3. A protective groove 5 is provided on the side of the installation part 3 close to the fan blades 2. One side of the fan blades 2 close to the fan frame 1 extends into the protective groove 5. It can be understood that when the fan blades 2 extend into the protective groove 5, the part of the fan blades 2 extending into the protective groove 5 is arranged in an interleaved manner with the protective groove 5. At this time, when the present utility model is used upside down outdoors, even if rain drops, it will not enter the interior of the present utility model. Moreover, it can not only prevent water but also prevent dust. Further, the protective structure of the present utility model is arranged inside the installation part 3, and the disc motor assembly is arranged inside the protective structure. The side of the disc motor assembly close to the fan blades 2 passes through the protective structure and the installation part 3 in sequence and is connected to the fan blades 2. It can be understood that a waterproof ring or other structures can also be arranged at the connection between the disc motor assembly and the fan blades 2 to prevent water from entering.

[0034] The protective structure of the present utility model can be understood as a structure similar to a shell, with structures such as a disc motor assembly arranged inside. Specifically, the protective structure includes a housing 6 and a rear cover 7. The housing 6 is installed in the installation part 3, and the disc motor assembly is installed in the housing 6, and the side of the disc motor assembly away from the fan blade 2 extends outside the housing 6. The side of the disc motor assembly close to the fan blade 2 passes through the protective structure and the installation part 3 in sequence and then is connected to the fan blade 2. The rear cover 7 is snap-fitted on the side of the disc motor assembly away from the fan blade 2.

[0035] Please continue to refer to Figures 1-4 , the disc motor assembly of the present utility model includes a bearing seat 8, a first bearing 9, a second bearing 10, a rotating shaft 11, a rotor disc 12, a permanent magnet 13, a circlip 14, a PCB winding 15, and a PCB board 16. The bearing seat 8 is riveted inside the right part of the housing 6 and passes through the housing 6. Both the first bearing 9 and the second bearing 10 are installed in the bearing seat 8. The rotor disc 12 is arranged inside the housing 6 and the rotor disc 12 is located on the side of the bearing seat 8 away from the fan blade 2. The permanent magnet 13 is installed in the rotor disc 12. The PCB winding 15 is arranged outside the housing 6 and the PCB winding 15 is located on the side of the rotor disc 12 away from the fan blade 2. The PCB board 16 is arranged outside the housing 6 and the PCB board 16 is located on the side of the PCB winding 15 away from the fan blade 2. The rear cover 7 is snap-fitted on the side of the PCB board 16 away from the fan blade 2. The rotating shaft 11 passes through the PCB board 16, the PCB winding 15, the rotor disc 12, the first bearing 9, the second bearing 10, the bearing seat 8, and the installation part 3 in sequence and then is connected to the fan blade 2. The first bearing 9 is located on the side of the second bearing 10 away from the fan blade. At least one stationary vane 17 is provided between the installation part 3 and the fan frame 1. A wire groove 18 is provided on the side of the stationary vane 17 close to the PCB board 16. The leads of the PCB board 16 pass through the rear cover 7 and are arranged in the wire groove 18. A snap-fastening member is provided at the connection of the wire groove 18 and the fan frame 1, and the snap-fastening member is snap-fitted on the leads of the PCB board 16. The wire groove 18 is filled with a first waterproof glue layer. The circlip 14 is sleeved on the rotating shaft 11 and the circlip 14 is located on the side of the first bearing 9 away from the fan blade 2. In the present utility model, the circlip 14 is mainly used for limiting, limiting the positions of the first bearing 9 and the second bearing 10. The bearing seat 8 is directly riveted on the housing 6. The first bearing 9 and the second bearing 10 are mainly installed in the bearing seat 8 and are limited by the circlip 14. A second waterproof glue layer is provided on the outer side of the rear cover 7 of the present utility model.

[0036] As a whole, the utility model arranges a PCB board 16, a rotor disk 12, a permanent magnet 13, etc. inside a protection structure, and arranges a second waterproof glue layer, a first waterproof glue layer, and arranges the fan blade 2 and the protection groove 5 in a staggered manner, all for further waterproofing and dustproofing, and the waterproofing and dustproofing effect is better. The utility model can be widely applied to external fans of photovoltaic inverters, charging piles, energy storage and other fields, and the waterproof level can reach IP68. When the waterproof requirement is not so high, the first waterproof glue layer and the second waterproof glue layer can be not arranged, and at this time, the waterproof and dustproof level can reach IP56. The permanent magnet 13 of the utility model is also the rotor, which is installed inside the rotor disk 12, can be 4 poles, and is evenly pasted inside the rotor disk 12. The central position of the rotor disk 12 is in tight fit with the rotating shaft 11. The stator winding of the utility model adopts one or more layers of copper-clad circuits, is a three-phase winding and is arranged inside the housing 6. The rotor disk 12 and the permanent magnet 13 structure are further located inside these stator windings. Structures such as the bearing seat 8, the first bearing 9, the second bearing 10, the rotating shaft 11, the rotor disk 12, the permanent magnet 13, the PCB winding 15 and the PCB board 16 of the utility model are all located inside the housing 6. The side surface of the rear cover 7 away from the fan blade 2 is flush with the side surface of the housing 6 away from the fan blade 2 or the side surface of the rear cover 7 away from the fan blade 2 is located on the right side of the side surface of the housing 6 away from the fan blade 2.

[0037] This embodiment does not make any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model all belong to the protection scope of the technical solution of the utility model.

Claims

1. Disc motor cooling fan, characterized by ,include: A fan frame, wherein a mounting portion is integrally formed in the fan frame, and a through hole is provided on the mounting portion; The fan blade is arranged in the fan frame and sleeved on the mounting portion. A protective groove is provided on a side of the mounting portion close to the fan blade, and a side of the fan blade close to the fan frame extends into the protective groove; a protective structure disposed in the mounting portion; and The disc motor assembly is arranged in the protective structure. The side of the disc motor assembly close to the fan blade passes through the protective structure and the mounting part in sequence and is connected to the fan blade.

2. The disc motor cooling fan according to claim 1, characterized in that: The protective structure includes a shell and a back cover, the shell is installed in the mounting portion, the disc motor assembly is installed in the shell and the side of the disc motor assembly away from the fan blades extends to the outside of the shell, the side of the disc motor assembly close to the fan blades passes through the protective structure and the mounting portion in sequence and is connected to the fan blades, and the back cover is buckled on the side of the disc motor assembly away from the fan blades.

3. The disc motor cooling fan according to claim 2, characterized in that: The disc motor assembly includes a bearing seat, a first bearing, a second bearing, a rotating shaft, a rotor disk, a permanent magnet, a PCB winding and a PCB board. The bearing seat is riveted in the right part of the shell and passes through the shell. The first bearing and the second bearing are both installed in the bearing seat. The rotor disk is arranged in the shell and the rotor disk is located on the side of the bearing seat away from the fan blades. The permanent magnet is installed in the rotor disk. The PCB winding is arranged on the outside of the shell and the PCB winding is located on the side of the rotor disk away from the fan blades. The PCB board is arranged on the outside of the shell and the PCB board is located on the side of the PCB winding away from the fan blades. The back cover is buckled on the side of the PCB board away from the fan blades. The rotating shaft passes through the PCB board, PCB winding, rotor disk, first bearing, second bearing, bearing seat and mounting portion in sequence and then is connected to the fan blades.

4. The disc motor cooling fan according to claim 3, characterized in that: It also includes a retaining spring, which is sleeved on the rotating shaft and located on a side of the first bearing away from the fan blades.

5. The disc motor cooling fan according to claim 3, characterized in that: At least one static leaf is provided between the mounting portion and the fan frame, a wire groove is provided on a side of the static leaf close to the PCB board, the leads of the PCB board are arranged in the wire groove after passing through the rear cover, a snap fastener is provided at the connection between the wire groove and the fan frame, the snap fastener is buckled on the leads of the PCB board, and the wire groove is filled with a first waterproof adhesive layer.

6. The disc-type motor cooling fan according to claim 2, characterized in that: A second waterproof adhesive layer is provided on the outer side of the back cover.

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