Waterproof direct-current brushless fan

Abstract

The application discloses a waterproof type direct-current brushless fan, which comprises a waterproof execution component, a front cover, screw two, screw three, a rear end cover and a waterproof power component; the waterproof screw partition column is provided with a thread groove on the right side cylindrical surface of the waterproof screw partition column, so that when water enters, the rotation of the thread groove can make the water rotate to the cavity; in addition, the left side end surface of the waterproof screw partition column is provided with an end surface screw groove, so that air flow is formed during high-speed rotation, water vapor and dust are blocked from entering the bearing, and then the water flow and the entering of the bearing are prevented; a plurality of drainage openings are formed on the left side of the fan cover two, so that the accumulation of liquid water after being sucked in is avoided, and the waterproof effect is improved; the stator and the shaft are isolated through the magnet shielding sleeve, so that water is prevented from entering the electronic component part, and the outer side of the magnet shielding sleeve and the inner side of the stator are filled with epoxy resin, so that the waterproof effect of the electronic component part is further improved.

Description

Technical fields:

[0001] This invention relates to the field of brushless fan technology, and in particular to a waterproof DC brushless fan. Background technology:

[0002] Brushless DC motors use semiconductor switching devices to achieve electronic commutation, replacing traditional contact commutators and brushes with electronic switching devices. Brushless DC motors are commonly used in fans. Fans are machines that rely on input mechanical energy to increase gas pressure and discharge gas; they are a type of driven fluid machinery. In contrast, traditional fans create positive pressure within the volute during operation. When moisture and dust from the air enter the volute, under pressure, they are forced through gaps in the bearing dust cover into the bearing, damaging the bearing grease and causing lubrication failure, significantly shortening the fan's lifespan. Summary of the Invention:

[0003] The purpose of this invention is to provide a waterproof DC brushless fan to solve the above-mentioned problems.

[0004] To address the aforementioned problems, this invention provides a technical solution: a waterproof DC brushless fan, the innovation of which lies in: comprising a waterproof actuator, a front cover, screw two, screw three, a rear end cover, and a waterproof power component; the right side of the waterproof power component is fixedly connected to the left side of the front cover by several screw twos; the rear end cover and the waterproof actuator are respectively fixedly connected to the left and right sides of the front cover by several screw threes, and the interior of the rear end cover is connected to the exterior of the waterproof power component; the central power input end of the waterproof actuator is connected to the right power output end of the waterproof power component.

[0005] Preferably, the waterproof actuator has the following specific structure: screw one, wind cover one, wind blade one, wind blade two, wind cover two, waterproof spiral spacer, and inlaid sleeve; wind cover one is fixedly connected to the right side of wind cover two by several screws one; wind blade two and wind blade one are both movably connected inside between wind cover one and wind cover two, the right side of wind blade two is fixedly connected to the left side of wind blade one, and an inlaid sleeve is fixedly connected to the center of wind blade two; the outer side of the waterproof spiral spacer is movably connected to the center of the left side of wind cover one.

[0006] Preferably, the waterproof spiral spacer has an end face spiral groove on the left end face and a threaded groove on the right cylindrical surface.

[0007] Preferably, the second wind shield has several drainage outlets around its left side.

[0008] Preferably, the waterproof power component includes a bearing 1, a bearing 2, a magnet shielding sleeve, a shaft retaining ring, a balance copper block, a magnet, a shaft, enameled wire, a wire frame 1, a stator, a wire frame 2, an insulating gasket, a PCB board, yellow wires, blue wires, white wires, a terminal box, and terminal springs. The shaft retaining ring is connected to the right side slot of the shaft. The inside of bearing 1 is connected to the outside of the right side of the shaft, and the left side of bearing 1 is connected to the right side of the shaft retaining ring. The outside of bearing 1 is located inside the center of the front cover. There are two balance copper blocks, which are movably connected to the two sides of the outside of the left side of the shaft, and a magnet is fixedly connected between the two balance copper blocks. The outside of bearing 2 is located inside the left side of the magnet shielding sleeve, and the inside of bearing 2 is connected to the shaft. The left end of the core is connected; the right side of the magnet shielding sleeve is fixedly connected to the left side of the front cover by several screws; wire frame one and wire frame two are fixedly connected to the outside of the magnet shielding sleeve, and a stator is fixedly connected between wire frame one and wire frame two; several enameled wires are fixedly connected to the inside of the stator, and the left side of each enameled wire is electrically connected to the PCB board; the outside of the stator is fixedly connected to the inside of the rear end cover; the PCB board is fixedly connected to the left side of wire frame two, and an insulating gasket is provided between the right side of the PCB board and the left side of wire frame two; the right sides of the yellow wire, blue wire and white wire are all electrically connected to the corresponding interfaces on the left side of the PCB board, and terminal springs are fixedly connected to the left ends of the yellow wire, blue wire and white wire, and the terminal springs are all located inside the terminal box.

[0009] Preferably, epoxy resin is used to fill the space between the outer side of the magnet shielding sleeve and the inner side of the stator.

[0010] Preferably, both bearing one and bearing two are all-ceramic ball bearings.

[0011] Preferably, the rear end cover is provided with a heat dissipation mechanism, and the specific structure of the heat dissipation mechanism includes a heat dissipation groove, an annular shell, an air outlet, an annular cavity, locking screws, an air inlet pipe, and an air inlet. There are several heat dissipation grooves, all of which are arranged horizontally and evenly distributed on the outside of the rear end cover. The right inner side of the annular shell is fixedly connected to the outside of the front cover by several locking screws. The annular shell has an annular cavity inside, and the left inner side of the annular shell is located on the right side of the outside of the rear end cover. The annular cavity has several air outlets inside, and the outlets of the air outlets are all connected to the inside of the heat dissipation grooves. An air inlet pipe is fixedly connected to the opening on the right side of the annular cavity. The right outer side of the air inlet pipe is located inside the air outlet of the waterproof actuator, and the right side of the air inlet pipe has an air inlet facing the air outlet direction of the waterproof actuator.

[0012] Preferably, the air outlet is inclined.

[0013] The beneficial effects of this invention are:

[0014] (1) The present invention has a reasonable and simple structure, low production cost and convenient installation. Here, a threaded groove is provided on the cylindrical surface of the right side of the waterproof spiral partition, so that water can be rotated back to the cavity through the rotation of the threaded groove after entering. In addition, an end face spiral groove is provided on the left end face of the waterproof spiral partition, which facilitates the formation of airflow when rotating at high speed, blocking water vapor and dust from entering the bearing, thereby preventing water from flowing down and entering the bearing.

[0015] (2) The present invention has several drainage outlets on the left side of the second wind cover, which can prevent liquid water from being sucked in and forming a buildup, thereby improving the waterproof effect.

[0016] (3) In this invention, the stator and the shaft are isolated by a magnetic shielding sleeve, which prevents water from entering the electronic components. At the same time, the outer side of the magnetic shielding sleeve and the inner side of the stator are encapsulated with epoxy resin, which further improves the waterproof effect of the electronic components.

[0017] (4) The present invention has a heat dissipation mechanism on the outside of the rear end cover, which can guide part of the gas blown out by the fan during operation into the annular cavity, and then blow it evenly into the corresponding heat dissipation slots through several air outlets, thereby improving the heat dissipation and cooling effect during long-term operation. Attached image description:

[0018] Figure 1 This is a schematic diagram of the structure of the present invention.

[0019] Figure 2 This is a schematic diagram of a waterproof actuator.

[0020] Figure 3 This is a structural diagram of a waterproof power component.

[0021] Figure 4 This is a schematic diagram of the heat dissipation mechanism.

[0022] 100-Waterproof actuator; 200-Front cover; 300-Screw 2; 400-Screw 3; 500-Rear end cover; 600-Waterproof power unit; 1-Screw 1; 2-Wind cover 1; 3-Wind blade 1; 4-Wind blade 2; 5-Wind cover 2; 6-Waterproof spiral spacer; 7-Inlaid sleeve; 8-Bearing 1; 9-Bearing 2; 10-Magnetic shielding sleeve; 15-Shaft retaining ring; 16-Balance copper block; 17-Magnetic... Iron; 18-Shaft; 19-Enameled wire; 20-Wire frame one; 21-Stator; 22-Wire frame two; 23-Insulating pad; 24-PCB board; 26-Yellow wire; 27-Blue wire; 28-White wire; 29-Terminal box; 30-Terminal spring; 31-Heat sink; 32-Annular housing; 33-Air outlet; 34-Annular cavity; 35-Locking screw; 36-Air inlet pipe; 37-Air inlet. Detailed implementation method:

[0023] like Figure 1 As shown, this specific embodiment adopts the following technical solution: a waterproof DC brushless fan, including a waterproof actuator 100, a front cover 200, screws 200, screws 300, a rear end cover 500, and a waterproof power component 600; the right side of the waterproof power component 600 is fixedly connected to the left side of the front cover 200 by several screws 200; the rear end cover 500 and the waterproof actuator 100 are respectively fixedly connected to the left and right sides of the front cover 200 by several screws 300, and the interior of the rear end cover 500 is connected to the exterior of the waterproof power component 600; the central power input end of the waterproof actuator 100 is connected to the right power output end of the waterproof power component 600.

[0024] like Figure 2 As shown, the specific structure of the waterproof actuator 100 includes screw 1, fan cover 2, fan blade 3, fan blade 4, fan cover 5, waterproof spiral spacer 6, and inlaid sleeve 7; the fan cover 2 is fixedly connected to the right side of the fan cover 5 by several screws 1; the fan blade 4 and fan blade 3 are both movably connected inside the fan cover 2 and the fan cover 5, where the cavity inside the fan cover 2 and the fan cover 5 forms an Archimedean spiral structure, which makes the airflow resistance small and the efficiency high; the right side of the fan blade 4 is fixedly connected to the left side of the fan blade 3, and the inlaid sleeve 7 is fixedly connected to the center of the fan blade 4; the outer side of the waterproof spiral spacer 6 is movably connected to the center of the left side of the fan cover 2.

[0025] The waterproof spiral partition 6 has a spiral groove on its left end face and a threaded groove on its right cylindrical surface; the wind cover 2 5 has several drainage outlets around its left perimeter.

[0026] like Figure 3As shown, the specific structure of the waterproof power component 600 includes a first bearing 8, a second bearing 9, a magnet shielding sleeve 10, a shaft retaining ring 15, a balance copper block 16, a magnet 17, a shaft 18, enameled wire 19, a first wire frame 20, a stator 21, a second wire frame 22, an insulating gasket 23, a PCB board 24, a yellow wire 26, a blue wire 27, a white wire 28, a terminal box 29, and a terminal spring 30. The shaft retaining ring 15 is connected to the right side slot of the shaft 18. The inside of the first bearing 8 is connected to the outside of the right side of the shaft 18, and the left side of the first bearing 8 is connected to the right side of the shaft retaining ring 15. The outside of the first bearing 8 is located inside the center of the front cover 200. There are two balance copper blocks 16, which are movably connected to the two sides of the outside of the left side of the shaft 18, and a magnet 17 is fixedly connected between the two balance copper blocks 16. The outside of the second bearing 9 is located inside the left side of the magnet shielding sleeve 10, and the inside of the second bearing 9 is connected to the shaft. The left end of 18 is connected; the right side of the magnet shielding sleeve 10 is fixedly connected to the left side of the front cover 200 by several screws 200. The outer side of the magnet shielding sleeve 10 is fixedly connected to wire frame 1 20 and wire frame 22, and a stator 21 is fixedly connected between wire frame 1 20 and wire frame 22; several enameled wires 19 are fixedly connected to the inner side of the stator 21, and the left side of each enameled wire 19 is electrically connected to the PCB board 24. The outer side of the stator 21 is fixedly connected to the inside of the rear end cover 500; the PCB board 24 is fixedly connected to the left side of wire frame 22, and an insulating pad 23 is provided between the right side of the PCB board 24 and the left side of wire frame 22; the right sides of the yellow wire 26, blue wire 27 and white wire 28 are all electrically connected to the corresponding interfaces on the left side of the PCB board 24, and the left ends of the yellow wire 26, blue wire 27 and white wire 28 are all fixedly connected to terminal springs 30, and the terminal springs 30 are all located inside the terminal box 29.

[0027] The outer side of the magnet shielding sleeve 10 and the inner side of the stator 21 are encapsulated with epoxy resin, which further improves the waterproof effect of the electronic components; the bearing 8 and the bearing 9 are both full ceramic ball bearings.

[0028] like Figure 4As shown, the rear end cover 500 is provided with a heat dissipation mechanism, and the specific structure of the heat dissipation mechanism includes heat dissipation grooves 31, annular shells 32, air outlets 33, annular cavities 34, locking screws 35, air inlets 36, and air inlets 37; there are several heat dissipation grooves 31, all of which are arranged horizontally and evenly distributed on the outside of the rear end cover 500; the inner right side of the annular shell 32 is fixedly connected to the outside of the front cover 200 by several locking screws 35, and the inside of the annular shell 32... An annular cavity 34 is provided, and the inner left side of the annular shell 32 is located on the outer right side of the rear end cover 500. The annular cavity 34 has several air outlets 33, and the outlets of the air outlets 33 are all connected to the inner side of the heat dissipation groove 31. An air inlet pipe 36 is fixedly connected to the opening on the right side of the annular cavity 34. The outer right side of the air inlet pipe 36 is located inside the air outlet of the waterproof actuator 100. An air inlet 37 is provided on the right side of the air inlet pipe 36, and the air inlet 37 faces the air outlet direction of the waterproof actuator 100.

[0029] The air outlet 33 is inclined.

[0030] The invention is used as follows: It features a reasonable and simple structure, low production cost, and convenient installation. In use, the waterproof power component 600 first drives the fan blades 3 and 4 in the waterproof actuator 100 to rotate. The rotation of fan blades 3 and 4 causes the intake air to be ejected through centrifugal force, completing the gas discharge. A threaded groove is provided on the right cylindrical surface of the waterproof spiral partition 6, ensuring that water entering can be rotated back into the cavity through the threaded groove. Additionally, a spiral groove is provided on the left end face of the waterproof spiral partition 6, facilitating airflow during high-speed rotation and preventing water vapor and dust from entering the bearing, thus preventing water from flowing down and entering the bearing. Furthermore, on the left side of the fan cover 5… Several drainage outlets are provided around the sides to prevent liquid water from being sucked in and accumulating, thus improving the waterproof effect. In addition, the stator 21 and the shaft 18 are isolated by a magnetic shielding sleeve 10 to prevent water from entering the electronic components. At the same time, the outer side of the magnetic shielding sleeve 10 and the inner side of the stator 21 are filled with epoxy resin, which further improves the waterproof effect of the electronic components. A heat dissipation mechanism is provided on the outside of the rear end cover 500, which can guide part of the gas blown out by the fan during operation into the annular cavity 34, and then blow it evenly into the corresponding heat dissipation slots 31 through several air outlets 33, thereby improving the heat dissipation and cooling effect during long-term operation.

[0031] The control method of this invention is either manual start-up or control through existing automation technology. The wiring diagram of the power element and the supply of power are common knowledge in the field. Furthermore, since this invention is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail here.

[0032] In the description of the invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0033] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of the invention. Those skilled in the art should understand that the invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications may be made to the invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A waterproof type direct current brushless fan, characterized by: It include waterproof execution component (100), front cover (200), screw two (300), screw three (400), rear end cover (500) and waterproof power component (600); The waterproof power component (600) is fixedly connected to the left side of the front cover (200) through a plurality of screw two (300); The rear end cover (500) and the waterproof execution component (100) are fixedly connected to the left and right sides of the front cover (200) through a plurality of screw three (400), and the inside of the rear end cover (500) is connected with the outside of the waterproof power component (600); The central power input end of the waterproof execution component (100) is connected with the right side power output end of the waterproof power component (600); The specific structure of the waterproof execution component (100) includes screw one (1), wind cover one (2), fan blade one (3), fan blade two (4), wind cover two (5), waterproof spiral partition column (6) and inlaid nest body (7); The wind cover one (2) is fixedly connected to the right side of the wind cover two (5) through a plurality of screw one (1); The fan blade two (4) and the fan blade one (3) are movably connected between the inside of the wind cover one (2) and the wind cover two (5), the right side of the fan blade two (4) is fixedly connected with the left side of the fan blade one (3), and the central inside of the fan blade two (4) is fixedly connected with the inlaid nest body (7); The outside of the waterproof spiral partition column (6) is movably connected to the central inside of the left side of the wind cover one (2); An end surface spiral groove is arranged on the left side end face of the waterproof spiral partition column (6), and a threaded groove is arranged on the right side cylindrical surface of the waterproof spiral partition column (6); A plurality of drainage openings are arranged around the left side of the wind cover two (5).

2. The waterproof DC brushless fan of claim 1, wherein: The specific structure of the waterproof power component (600) includes bearing one (8), bearing two (9), magnet shielding sleeve (10), shaft spring (15), balance copper block (16), magnet (17), shaft (18), enameled wire (19), wire frame one (20), stator (21), wire frame two (22), insulating gasket (23), PCB board (24), yellow wire (26), blue wire (27), white wire (28), terminal box (29) and terminal spring (30); The shaft spring (15) is connected with the right side clamping groove of the shaft (18); The inside of the bearing one (8) is connected with the outside of the right side of the shaft (18), the left side of the bearing one (8) is connected with the right side of the shaft spring (15), and the outside of the bearing one (8) is located in the central inside of the front cover (200); The balance copper block (16) is two, and the two balance copper blocks (16) are movably connected to the outside of the left side of the shaft (18), and the magnet (17) is fixedly connected between the two balance copper blocks (16); The outside of the bearing two (9) is located in the inside of the left side of the magnet shielding sleeve (10), and the inside of the bearing two (9) is connected with the left end of the shaft (18). The magnet shielding sleeve (10) is fixedly connected to the left side of the front cover (200) by a plurality of screws (300) on the right side, the magnet shielding sleeve (10) is fixedly connected with a wire rack (20) and a wire rack (22) on the outside, and a stator (21) is fixedly connected between the wire rack (20) and the wire rack (22). A plurality of enameled wires (19) are fixedly connected to the inner side of the stator (21), and the left side of the enameled wire (19) is electrically connected with the PCB board (24), and the outer side of the stator (21) is fixedly connected with the inner side of the rear end cover (500). The PCB board (24) is fixedly connected to the left side of the wire rack (22), and an insulating gasket (23) is arranged between the right side of the PCB board (24) and the left side of the wire rack (22). The right side of the yellow wire (26), the blue wire (27) and the white wire (28) is electrically connected with the corresponding interface on the left side of the PCB board (24), the left end of the wire (26), the blue wire (27) and the white wire (28) is fixedly connected with a terminal spring (30), and the terminal spring (30) is arranged in the terminal box (29).

3. The waterproof DC brushless fan of claim 2, wherein: The outer side of the magnet shielding sleeve (10) and the inner side of the stator (21) are filled with epoxy resin.

4. The waterproof DC brushless fan of claim 2, wherein: The bearing (8) and the bearing (9) are full ceramic ball bearings.

5. The waterproof DC brushless fan of claim 1, wherein: The rear end cover (500) is provided with a heat dissipation mechanism, and the specific structure of the heat dissipation mechanism comprises a heat dissipation groove (31), an annular shell (32), an air outlet (33), an annular cavity (34), a locking screw (35), an air inlet pipe (36) and an air inlet (37). The heat dissipation groove (31) is a plurality of heat dissipation grooves (31) which are arranged horizontally and evenly on the outer side of the rear end cover (500). The right inner side of the annular shell (32) is fixedly connected to the outer side of the front cover (200) by a plurality of locking screws (35), the annular shell (32) is provided with an annular cavity (34) in the inner side, and the left inner side of the annular shell (32) is located on the right side of the outer side of the rear end cover (500). The inner side of the annular cavity (34) is provided with a plurality of air outlets (33), and the outlets of the air outlets (33) are communicated with the inner side of the heat dissipation groove (31), and the air inlet pipe (36) is fixedly connected to the right side of the annular cavity (34). The right side of the air inlet pipe (36) is located in the air outlet of the waterproof execution component (100), and the right side of the air inlet pipe (36) is provided with an air inlet (37), and the air inlet (37) faces the air outlet direction of the waterproof execution component (100).

6. The waterproof DC brushless fan of claim 5, wherein: The air outlet (33) is arranged obliquely.

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