Separate type water-proofing fan

Abstract

The application relates to a fan technical field, in particular to a separated pouring waterproof fan; the waterproof fan comprises a fan main body and a control box, the fan main body comprises a fan frame body, a stator assembly and a fan assembly, a pouring body is arranged at the center of the fan frame body, and the fan assembly is rotationally connected with the pouring body; a lower inner cavity of the pouring body is a mounting cavity, and an upper inner cavity of the pouring body is a filling cavity; the stator assembly is arranged in the mounting cavity and is connected with the pouring body in a matched mode, and the filling cavity is filled with sealing filler; a PCB circuit board is arranged in the control box, and the circuit on the stator assembly passes through the filling cavity and is electrically connected with the PCB circuit board; the waterproof fan has a reasonable structure, the fan assembly, the fan frame body and the stator assembly are assembled and then subjected to compliance detection, the sealing filler is injected into the filling cavity, the stator assembly is encapsulated in the pouring body, the control box is integrated with electronic elements which are not resistant to low temperature, the waterproof fan can work in a high-temperature, low-temperature, dust and other harsh environment, and the service life of the waterproof fan is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the fan technical field, specifically to a kind of separated type potting waterproof fan. BACKGROUND

[0002] Fan motor is a kind of general equipment applied in various fields, and as an electric device, the running safety of fan motor is greatly influenced in some harsh environments, such as outdoor, places with more dust, places with higher humidity and sea salt spray area. In order to improve the stability and service life of fan motor, the use environment of fan motor usually needs to pay attention to moisture-proof, waterproof and anti-static. Therefore, the performance of dust-proof, waterproof and anti-static in the design and manufacturing process of fan motor is relatively important, and the existing fan motor three-proofing process is mostly through coating, glue coating and bakelite curing treatment. Since the coating process will destroy its integrity in secondary processing and lose the protection effect, and the glue is liquid and difficult to repeatedly produce and manufacture, it is difficult to produce products with high consistency. High pressure injection molding machine (BMC injection molding machine) is different, and high pressure injection molding machine can also completely achieve the required shape, but the working temperature of high pressure injection molding is too high (110-130 DEG C) to cause damage to the object to be filled, and the high pressure is also easy to damage electronic parts. Therefore, the existing technology needs to be improved and developed. SUMMARY

[0003] The present application aims at the defects and deficiencies of the prior art, and provides a separated type potting waterproof fan with reasonable structure and strong insulation waterproofness.

[0004] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0005] The separated type potting waterproof fan provided by the present application comprises a fan main body and a control box, the fan main body comprises a fan frame, a stator assembly and a fan assembly, a potting body is arranged at the center of the fan frame, and the fan assembly is rotatably connected with the potting body. The potting body is a hollow structure with an open upper end, the lower inner cavity of the potting body is an assembly cavity, and the upper inner cavity of the potting body is a filling cavity. The stator assembly is arranged in the assembly cavity and is connected with the potting body in a matching mode, and the filling cavity is filled with sealing filler. The control box is provided with a PCB circuit board, and the circuit on the stator assembly passes through the filling cavity and is electrically connected with the PCB circuit board.

[0006] According to the above scheme, a plurality of notch grooves are arranged on the inner side surface of the assembly cavity, and the stator assembly is matched with the plurality of notch grooves to form a fixed connection with the assembly cavity in the circumferential direction.

[0007] According to the above scheme, the shaft sleeve pipe is provided in the potting body and has a hollow structure with two open ends, the shaft sleeve pipe is vertically arranged at the center of the assembly cavity, and the lower end of the shaft sleeve pipe penetrates through the bottom plate of the potting body; the stator assembly is provided with a central through hole, and the shaft sleeve pipe is arranged in the central through hole; the fan assembly comprises a core shaft and a fan blade, the fan blade is fixedly connected with the lower end of the core shaft; the core shaft is rotatably arranged in the shaft sleeve pipe, and the upper end of the core shaft is connected with the shaft sleeve pipe.

[0008] According to the above scheme, the fan blade is provided with a cylindrical iron shell, the lower end of the iron shell is fixedly connected with the fan blade; the iron shell is rotatably sleeved on the potting body and is arranged concentrically with the potting body, a plurality of magnets are arranged on the iron shell, the plurality of magnets are arranged around the potting body at equal angles, and the plurality of magnets are fixedly connected with the inner side wall of the iron shell.

[0009] According to the above scheme, the bottom surface of the potting body is provided with a positioning groove, the lower end of the shaft sleeve pipe is arranged in communication with the positioning groove, a plurality of limiting protrusions are arranged on the inner side wall of the shaft sleeve pipe; a bearing is arranged in the positioning groove, the lower end of the core shaft is connected with the bearing in the positioning groove, a bearing is arranged between the core shaft above the limiting protrusions and the shaft sleeve pipe, and a limiting snap ring is arranged at the upper end of the core shaft.

[0010] According to the above scheme, the upper end of the potting body is provided with a sealing cover, the bottom surface of the sealing cover is provided with a plug, and the plug is embedded in the upper end of the shaft sleeve pipe.

[0011] According to the above scheme, the PCB circuit board is integrated with a Hall driving chip, a Hall sensor is arranged on the inner side wall of the assembly cavity, and the circuit on the Hall sensor penetrates through the filling cavity and is electrically connected with the PCB circuit board.

[0012] According to the above scheme, a transition structure is arranged between the potting body and the fan frame body, and a wire clamping buckle is arranged on the transition structure.

[0013] The present application has the advantages that: the structure of the present application is reasonable, the fan assembly is first assembled with the fan frame body into an integrated body, then the stator assembly is assembled into the assembly cavity for compliance detection, and the qualified products can be injected with sealing filler in the filling cavity, so that the stator assembly is packaged in the potting body to improve the three-proofing property, and the electronic elements integrated in the control box are not resistant to low temperature, so that the waterproof fan can work in harsh environments such as high temperature, low temperature and dust, and the service life of the waterproof fan is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the overall structure schematic diagram of the present application;

[0015] Figure 2 It is the structure schematic diagram of the fan frame body and the stator assembly before assembly of the present application;

[0016] Figure 3This is a cross-sectional structural diagram of the fan frame and fan assembly before assembly according to the present invention;

[0017] Figure 4 This is a schematic diagram of the bottom structure of the fan frame of the present invention.

[0018] In the picture:

[0019] 1. Fan body; 2. Control box; 3. Stator assembly; 4. Fan assembly; 5. Sealing cover; 11. Fan frame; 12. Potting body; 13. Assembly cavity; 14. Filling cavity; 15. Notch; 16. Shaft sleeve; 17. Positioning groove; 18. Limiting protrusion; 19. Wire clip; 21. PCB circuit board; 22. Hall sensor; 41. Spindle; 42. Fan blade; 43. Iron shell; 44. Magnet; 51. Plug. Detailed Implementation

[0020] The technical solution of the present invention will be described below with reference to the accompanying drawings and embodiments.

[0021] like Figures 1-4 As shown, the present invention discloses a detachable potted waterproof fan, comprising a fan body 1 and a control box 2. The fan body 1 includes a fan frame 11, a stator assembly 3, and a fan assembly 4. A potting body 12 is provided at the center of the fan frame 11, and the fan assembly 4 is rotatably connected to the potting body 12. The potting body 12 is a hollow structure with an open upper end. The lower inner cavity of the potting body 12 is an assembly cavity 13, and the upper inner cavity of the potting body 12 is a filling cavity 14. The stator assembly 3 passes through the assembly cavity 13 and is connected to the potting body 12. The filling cavity 14 is filled with sealing filler. The control box 2 contains a PCB circuit board 21, and the lines on the stator assembly 3 pass through the filling cavity 14 to be electrically connected to the PCB circuit board 21. The stator assembly 3 refers to a wound stator, which is equipped with a heating resistor and leads. The stator assembly 3 is disposed in the assembly cavity 13, and the sealing filler is filled in the filling cavity 14 to seal the upper end of the potting body 12, thereby ensuring the insulation and waterproofness of the stator assembly 3. The sealing filler is made of materials such as resin and glue that are liquid under normal conditions. A curing agent is added to the sealing filler to accelerate curing. Preferably, after the stator assembly 3 is assembled into the potting body 12, it can be heated by equipment such as an oven to increase the curing speed of the sealing filler. After the sealing filler has cured, the stator assembly 3 can be completely fixed in the potting body 12 and its waterproof and insulating properties are guaranteed. Furthermore, the control box 2 is independently set up from the fan body 1. The heating process during the assembly and curing of the stator assembly 3 will not affect the electronic components on the PCB circuit board 21 inside the control box 2. In particular, the fan body 1 can operate in a low-temperature environment, while the control box 2 can be kept away from the low-temperature environment so that the electronic components can operate at normal temperature.

[0022] The inner side of the assembly cavity 13 is provided with a plurality of notched grooves 15, and the stator assembly 3 is matched with the plurality of notched grooves 15 to form a fixed connection with the assembly cavity 13 in the circumferential direction. The assembly cavity 13 is circular, and the stator assembly 3 is also cylindrical to fit the assembly cavity 13, and the stator assembly 3 is arranged concentrically with the assembly cavity 13 after being assembled into the assembly cavity 13. There is a degree of freedom in the circumferential direction between the stator assembly 3 and the assembly cavity 13. The plurality of notched grooves 15 are arranged around the circumference of the assembly cavity 13. The outer edge of the stator assembly 3 can be correspondingly provided with a raised edge to engage the corresponding notched groove 15, so as to form a circumferential matching connection between the stator assembly 3 and the assembly cavity 13.

[0023] The potting body 12 is provided with a shaft sleeve pipe 16. The shaft sleeve pipe 16 is a hollow structure with open ends. The shaft sleeve pipe 16 is vertically arranged at the center of the assembly cavity 13, and the lower end of the shaft sleeve pipe 16 penetrates the bottom plate of the potting body 12. The stator assembly 3 is provided with a central through hole, and the shaft sleeve pipe 16 is arranged in the central through hole. The fan assembly 4 includes a mandrel 41 and a fan blade 42. The fan blade 42 is fixedly connected with the lower end of the mandrel 41. The mandrel 41 is rotatably arranged in the shaft sleeve pipe 16, and the upper end of the mandrel 41 is matched with the shaft sleeve pipe 16. The two ends of the shaft sleeve pipe 16 penetrate the upper and lower end faces of the potting body 12, respectively. Then, the fan assembly 4 is assembled into the potting body 12 from the lower end and is rotatably matched with the potting body 12. The fan assembly 4 is rotatably connected with the shaft sleeve pipe 16 through the mandrel 41. When the wire-wound stator of the stator assembly 3 is powered, the fan assembly 4 can be driven to rotate.

[0024] The fan blade 42 is provided with a cylindrical iron shell 43. The lower end of the iron shell 43 is fixedly connected with the fan blade 42. The iron shell 43 is rotatably sleeved on the potting body 12 and is arranged concentrically with the potting body 12. The iron shell 43 is provided with a plurality of magnets 44. The plurality of magnets 44 are arranged around the potting body 12 at equal angular intervals, and are respectively fixedly connected with the inner side wall of the iron shell 43.

[0025] The bottom surface of the potting body 12 is provided with a positioning groove 17. The lower end of the shaft sleeve pipe 16 is arranged in communication with the positioning groove 17. The inner side wall of the shaft sleeve pipe 16 is provided with a plurality of limiting protrusions 18. The positioning groove 17 is provided with a bearing. The lower end of the mandrel 41 is matched with the bearing in the positioning groove 17. A bearing is arranged between the mandrel 41 above the limiting protrusion 18 and the shaft sleeve pipe 16. The upper end of the mandrel 41 is provided with a limiting snap ring. First, the mandrel 41 is arranged in the shaft sleeve pipe 16. The two ends of the mandrel 41 are respectively connected with the positioning groove 17 and the shaft sleeve pipe 16 through bearings. After the stator assembly 3 is assembled into the assembly cavity 13, a semi-finished product of the waterproof fan is formed. At this time, the semi-finished product can be tested. After passing the test, the potting process is carried out. The ingredients of the sealing filler are stirred uniformly and pressurized by the built-in screw to make the sealing filler flow into the filling cavity 14. At this time, the upper end of the shaft sleeve pipe 16 can be closed by an auxiliary tool to prevent the sealing filler from entering the shaft sleeve pipe 16.

[0026] The upper end of the potting body 12 is provided with a sealing cover 5, and the bottom surface of the sealing cover 5 is provided with a plug 51 embedded in the upper end of the shaft sleeve 16. The sealing cover 5 is used to seal the upper end of the potting body 12, and then the upper end of the shaft sleeve 16 is closed by the plug 51 to prevent dust and water from entering the shaft sleeve 16 and affecting the flexibility of the shaft 41.

[0027] The PCB circuit board 21 is integrated with a Hall drive chip, the inner side wall of the assembly cavity 13 is provided with a Hall sensor 22, and the circuit on the Hall sensor 22 passes through the filling cavity 14 and is electrically connected with the PCB circuit board 21. The PCB circuit board 21 and the Hall drive chip are independently arranged in the control box 2, which avoids the influence of the too harsh working environment on the electronic components, so that the waterproof fan can be used in low temperature and water environment.

[0028] The transition structure is provided between the potting body 12 and the fan frame body 11, and the transition structure is provided with a wire clamping buckle 19.

[0029] The above is only the preferred embodiment of the present application, so any equivalent changes or modifications made according to the structure, features and principles described in the patent application range of the present application are included in the patent application range of the present application.

Claims

1. A split pot waterproof fan comprising a fan body (1) and a control box (2), characterized in that: The fan body (1) comprises a fan frame (11), a stator assembly (3) and a fan assembly (4), the center of the fan frame (11) is provided with a potting body (12), the fan assembly (4) is rotatably connected with the potting body (12); the potting body (12) is a hollow structure with an open upper end, the lower inner cavity of the potting body (12) is an assembly cavity (13), and the upper inner cavity of the potting body (12) is a filling cavity (14); the stator assembly (3) is arranged in the assembly cavity (13) and is connected with the potting body (12) in a matched mode, and the filling cavity (14) is filled with a sealing filler; the control box (2) is provided with a PCB circuit board (21), and the circuit on the stator assembly (3) passes through the filling cavity (14) and is electrically connected with the PCB circuit board (21). A plurality of notch grooves (15) are arranged on the inner side of the assembly cavity (13), the stator assembly (3) is matched with the plurality of notch grooves (15) and is fixedly connected with the assembly cavity (13) in the circumferential direction. The potting body (12) is provided with a shaft sleeve pipe (16), the shaft sleeve pipe (16) is a hollow structure with open ends, the shaft sleeve pipe (16) is vertically arranged at the center of the assembly cavity (13), and the lower end of the shaft sleeve pipe (16) penetrates through the bottom plate of the potting body (12); the stator assembly (3) is provided with a central through hole, and the shaft sleeve pipe (16) is arranged in the central through hole; the fan assembly (4) comprises a mandrel (41) and a fan blade (42), the fan blade (42) is fixedly connected with the lower end of the mandrel (41); the mandrel (41) is rotatably arranged in the shaft sleeve pipe (16), and the upper end of the mandrel (41) is connected with the shaft sleeve pipe (16) in a matched mode. The fan blade (42) is provided with a cylindrical iron shell (43), the lower end of the iron shell (43) is fixedly connected with the fan blade (42); the iron shell (43) is rotatably sleeved on the potting body (12) and is arranged concentrically with the potting body (12), the iron shell (43) is provided with a plurality of magnets (44), the plurality of magnets (44) are arranged around the potting body (12) in an equiangular interval mode, and the plurality of magnets (44) are fixedly connected with the inner side wall of the iron shell (43) respectively; The bottom surface of the potting body (12) is provided with a positioning groove (17), the lower end of the shaft sleeve pipe (16) is arranged in communication with the positioning groove (17), and a plurality of limiting protrusions (18) are arranged on the inner side wall of the shaft sleeve pipe (16); the positioning groove (17) is provided with a bearing, the lower end of the mandrel (41) is connected with the bearing in the positioning groove (17), a bearing is arranged between the mandrel (41) above the limiting protrusion (18) and the shaft sleeve pipe (16), and the upper end of the mandrel (41) is provided with a limiting snap ring.

2. The split pot potless waterproof fan of claim 1, wherein: The upper end of the potting body (12) is provided with a sealing cover (5), the bottom surface of the sealing cover (5) is provided with a plug (51), and the plug (51) is embedded in the upper end of the shaft sleeve pipe (16).

3. The split pot lube fan of claim 1 wherein: The PCB circuit board (21) is integrated with a Hall drive chip, the inner side wall of the assembly cavity (13) is provided with a Hall sensor (22), and the circuit on the Hall sensor (22) passes through the filling cavity (14) and is electrically connected with the PCB circuit board (21).

4. The split pot lube fan of claim 3 wherein: The transition structure is arranged between the potting body (12) and the fan frame body (11), and the wire clamping buckle (19) is arranged on the transition structure.

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