Waterproof heat dissipation axial flow fan

Abstract

The utility model relates to the technical field of fans, and discloses a waterproof heat dissipation axial flow fan which comprises a fan shell, a motor support, a flow guide diffusion mechanism, a fan and a driving motor, the flow guide diffusion mechanism is arranged on the fan shell, the motor support is installed at an air inlet port of the fan shell, the driving motor is installed on the motor support, and the fan is installed on the motor support. A fan is mounted at the driving end of the driving motor; the driving motor comprises a bottom shell, a circuit control board, a motor lower shell, a motor core, a motor upper shell and a heat dissipation block, the circuit control board, the motor lower shell and the heat dissipation block are installed on the bottom shell, the motor lower shell and the heat dissipation block surround the periphery of the circuit control board, and the motor core is installed in a cavity defined by the motor lower shell and the motor upper shell; the driving end of the motor core penetrates through the motor upper shell and is connected with the fan, the motor upper shell is installed on the motor support, and the circuit control board is electrically connected with the motor core. According to the fan, the fan shell is enhanced, wind resistance is relieved, the angle can be swung, the production process is simplified, and effective water prevention and heat dissipation are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to an axial flow fan with waterproof and heat dissipation functions. Background Art

[0002] In industry and daily life, especially in places with poor ventilation, fans are used for ventilation and air circulation. Nowadays, there are various types of fans on the market, playing an important role. In particular, axial flow fans are common ventilation equipment in people's lives. They can be used for ventilation and air change in general factories, warehouses, offices, residences, etc. An axial flow fan generally includes a cylinder body, a motor mounting seat arranged in the cylinder body, a connecting plate for connecting the motor mounting seat and the cylinder body, a motor installed in the motor mounting seat, and a wind blade installed on the motor transmission shaft. However, at present, the fan housing of the axial flow fan has many deficiencies. The strength of the fan housing is not good, and it is not easy to be used durably. When the fan is working, the air flow direction of the fan housing is extremely easy to be blocked, affecting the transmission of wind power. In addition, the angle of the fan is fixed and cannot swing, etc. Moreover, the processing of the fan housing is cumbersome and the process is complex, etc. In addition, the fan itself generates heat, which will affect the operation of the fan and also affect the durable use of the fan, etc.

[0003] Therefore, in view of the above problems, the existing fan technology methods need to be further improved. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the problems of poor strength of the existing fan housing, wind power obstruction, inability to swing, cumbersome process, and difficulty in dissipating the heat generated by the fan itself, which affect the durable use of the fan, etc. Through reasonable design of the fan, by using a fan housing, a motor bracket, a flow guiding and pressure expanding mechanism, a fan, and a driving motor, and then cooperating with a bottom shell, a circuit control board, a motor lower shell, a motor core, a motor upper shell, and a heat dissipation block of the driving motor, it is possible to enhance the fan housing, reduce wind power obstruction, enable the fan to swing in angle and simplify the production process, etc., and also effectively dissipate heat and improve the durable use of the fan, etc.

[0005] The technical solution of the utility model is specifically as follows:

[0006] An axial flow fan with waterproof and heat dissipation functions, the axial flow fan with waterproof and heat dissipation functions includes: a fan housing, a motor bracket, a flow guiding and pressure expanding mechanism, a fan, and a driving motor. The flow guiding and pressure expanding mechanism is arranged on the fan housing. The motor bracket is installed at the air inlet port of the fan housing. The driving motor is installed on the motor bracket. The fan is installed on the driving end of the driving motor.

[0007] Among them, the drive motor includes a bottom case, a circuit control board, a motor lower case, a motor core, a motor upper case, and a heat dissipation block. The circuit control board, the motor lower case, and the heat dissipation block are installed on the bottom case. The motor lower case and the heat dissipation block surround the circuit control board. The motor core is installed in the cavity formed by the motor lower case and the motor upper case. The drive end of the motor core penetrates the motor upper case and is connected to the fan. The motor upper case is installed on the motor bracket. The power supply end of the circuit control board is electrically connected to an external power supply, and the control end of the circuit control board is electrically connected to the control end of the motor core. The circuit control board is used to control the operation of the motor core and thus drive the fan to rotate.

[0008] Further, the motor bracket is a mesh-type motor bracket.

[0009] Further, the waterproof and heat-dissipating axial flow fan further includes a rotating bracket. The fan housing is rotatably installed on the rotating bracket, and the rotating bracket is used to install the waterproof and heat-dissipating axial flow fan on other objects.

[0010] Further, the waterproof and heat-dissipating axial flow fan further includes a main blocking net, and the main blocking net is installed at the air outlet port of the fan housing.

[0011] Further, the fan is arranged in the inner cavity of the fan housing between the main blocking net and the motor bracket.

[0012] Further, the fan housing is provided with flow guiding and strengthening ribs.

[0013] Further, the fan housing includes an upper fan housing and a lower fan housing, and the upper fan housing and the lower fan housing form the whole fan housing.

[0014] Further, the bottom case is provided with a heat dissipation net, and the heat dissipation net corresponds to the heat dissipation block.

[0015] Further, both the upper fan housing and the lower fan housing are semi-circular fan housings, and the upper fan housing and the lower fan housing are the same semi-circular fan housing.

[0016] Further, the heat dissipation block is an aluminum material heat dissipation block, and several heat dissipation fins are provided on the heat dissipation block.

[0017] Further, the flow guiding and pressure expanding mechanism includes a main flow guiding and pressure expanding ring and a secondary flow guiding and pressure expanding ring. The main flow guiding and pressure expanding ring is installed at the air outlet port of the fan housing, and the secondary flow guiding and pressure expanding ring is installed at the air inlet port of the air outlet port of the fan housing.

[0018] Further, both the main flow guiding and pressure expanding ring and the secondary flow guiding and pressure expanding ring are in the shape of a "flare".

[0019] Further, the radian angle of the main flow guiding and diffusing ring is selected in the range of 15° to 20°, and the radian angle of the secondary flow guiding and diffusing ring is selected in the range of 5° to 8°.

[0020] Further, positioning mechanisms are provided on both the upper fan housing and the lower fan housing, and the positioning mechanisms are used to define the splicing of the upper fan housing and the lower fan housing.

[0021] Further, the rotating bracket includes a bracket, a rotating shaft, an arc-shaped groove, and a limiting member. The bracket is installed on the fan housing through the rotating shaft. The limiting member is provided on the fan housing near the rotating shaft. The arc-shaped groove is provided on the bracket, and the arc-shaped groove corresponds to the limiting member, and the limiting member is placed in the arc-shaped groove.

[0022] Further, the flow guiding and diffusing mechanism includes a main flow guiding and diffusing ring and a secondary flow guiding and diffusing ring. The main flow guiding and diffusing ring is installed at the air outlet port of the fan housing, and the secondary flow guiding and diffusing ring is installed at the air inlet port of the air outlet port of the fan housing.

[0023] Further, the flow guiding reinforcing ribs are provided at both ports of the fan housing.

[0024] Further, intermediate reinforcing ribs are provided on the fan housing.

[0025] Further, the intermediate reinforcing ribs are provided at the middle position of the fan housing.

[0026] Further, the fan housing is selected as a fan housing made by injection molding.

[0027] Further, the positioning mechanisms on the upper fan housing and the lower fan housing are both selected as grooves, and movable positioning plates are provided in the grooves. The positioning plates can be inserted into the grooves on the upper fan housing and the lower fan housing, and are used to define the splicing of the upper fan housing and the lower fan housing.

[0028] Further, the upper fan housing and the lower fan housing are stably spliced through screws.

[0029] Further, the main baffle net includes main net support rods and a main annular net. The main annular net is arranged on the main net support rods, and the main net support rods are installed at the air outlet port of the fan housing.

[0030] Further, double rod pieces are provided at the ends of the main net support rods, and the double rod pieces are connected to the air outlet port of the fan housing through screws.

[0031] Further, the motor bracket includes bracket support rods and a bracket annular net. The bracket annular net is arranged on the bracket support rods, and the bracket support rods are installed at the air inlet port of the fan housing.

[0032] Beneficial effects

[0033] Through the rational design of the fan, the utility model adopts a fan housing, a motor bracket, a flow guiding and diffusing mechanism, a fan, and a driving motor, and then cooperates with a bottom case, a circuit control board, a motor lower case, a motor core, a motor upper case, and a heat dissipation block of the driving motor, which can enhance the fan housing, reduce wind resistance, can swing the angle and simplify the production process, etc., and can also effectively dissipate heat and improve the durability of the fan. The cooperation of the flow guiding reinforcing ribs and the middle reinforcing ribs can enhance the strength of the fan housing; the semi-circular fan housing injection molded with the same mold can simplify the process and reduce the production cost, etc.; the rotating bracket and its cooperating components can realize manual rotation and swinging of the head, etc.; the double rod pieces are connected to the fan housing, which can stably enhance the connection of the main baffle on the fan housing, etc. Description of the drawings

[0034] Figure 1 It is a schematic structural diagram of the driving motor of an axial flow fan with waterproof and heat dissipation of the present utility model.

[0035] Figure 2 It is a schematic rear view structural diagram of the driving motor of an axial flow fan with waterproof and heat dissipation of the present utility model.

[0036] Figure 3 It is a schematic side view structural diagram of the fan housing of an axial flow fan with waterproof and heat dissipation of the present utility model.

[0037] Figure 4 It is a schematic structural diagram of an axial flow fan with waterproof and heat dissipation of the present utility model.

[0038] Figure 5 It is a schematic partial explosion structural diagram of the driving motor of an axial flow fan with waterproof and heat dissipation of the present utility model.

[0039] Figure 6 It is a schematic explosion structural diagram of the driving motor of an axial flow fan with waterproof and heat dissipation of the present utility model.

[0040] Figure 7 It is a schematic explosion structural diagram of an axial flow fan with waterproof and heat dissipation of the present utility model.

[0041] Reference numerals in the drawings: 01, fan housing; 02, driving motor; 03, motor bracket; 04, auxiliary flow guiding and diffusing ring; 05, rotating bracket; 06, flow guiding reinforcing rib; 07, middle reinforcing rib; 08, main baffle; 09, positioning plate; 011, upper groove; 21, heat dissipation block; 22, motor lower case; 23, bottom case; 24, motor upper case; 25, motor core; 26, circuit control board; 051, arc groove; 081, main net support rod; 021, lower groove; 012, main flow guiding and diffusing ring. Detailed implementation manners

[0042] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0043] Referring to Figures 1-7 As shown, an axial flow fan with waterproof and heat dissipation provided by the present utility model includes: a fan housing 01, a motor bracket 03, a flow guiding and diffusing mechanism, a fan, and a driving motor 02. A flow guiding and diffusing mechanism is provided on the fan housing 01. A motor bracket 03 is installed at the air inlet port of the fan housing 01. The driving motor 02 is installed on the motor bracket 03. A fan is installed on the driving end of the driving motor 02. The motor bracket 03 is a mesh-type motor bracket;

[0044] Among them, the axial flow fan with waterproof and heat dissipation further includes a rotating bracket 05. The fan housing 01 is rotatably installed on the rotating bracket 05. The rotating bracket 05 is used to install the axial flow fan with waterproof and heat dissipation on other objects. The axial flow fan with waterproof and heat dissipation further includes a main retaining net 08. The main retaining net 08 is installed at the air outlet port of the fan housing 01. The fan is arranged in the inner cavity of the fan housing 01 between the main retaining net 08 and the motor bracket 03. The main retaining net 08 includes main net support rods 081 and a main annular net. The main annular net is arranged on the main net support rods 081. The main net support rods 081 are installed at the air outlet port of the fan housing 01. Double rod pieces are provided at the ends of the main net support rods 081. The double rod pieces are connected to the air outlet port of the fan housing 01 by screws. The motor bracket 03 includes bracket support rods and a bracket annular net. The bracket annular net is arranged on the bracket support rods. The bracket support rods are installed at the air inlet port of the fan housing 01;

[0045] Among them, the fan housing 01 is provided with a flow guiding and strengthening rib 06; the fan housing 01 includes an upper fan housing and a lower fan housing, and the upper fan housing and the lower fan housing form the whole fan housing 01. The upper fan housing and the lower fan housing are both semi-circular fan housings, and the upper fan housing 01 and the lower fan housing 01 are the same semi-circular fan housing; positioning mechanisms are provided on both the upper fan housing and the lower fan housing, and the positioning mechanisms are used to limit the splicing of the upper fan housing 01 and the lower fan housing 01; the fan housing 01 is a fan housing made by injection molding; the positioning mechanisms on the upper fan housing and the lower fan housing are both selected as grooves, and a movable positioning plate 09 is provided in the grooves. The positioning plate 09 can be inserted into the grooves on the upper fan housing and the lower fan housing, and is used to limit the splicing of the upper fan housing and the lower fan housing; the upper fan housing and the lower fan housing are stably spliced by screws; that is: the groove is divided into an upper groove 011 and a lower groove 021. The upper groove 011 is provided on the upper fan housing, and the lower groove 021 is provided on the lower fan housing. The positioning plate 09 is placed on the upper groove 011 or the lower groove 021. The upper groove 011 and the lower groove 021 are butted, and then the upper fan housing and the lower fan housing are tightened with screws for stable splicing;

[0046] Among them, the flow guiding and pressure expanding mechanism includes a main flow guiding and pressure expanding ring 012 and a secondary flow guiding and pressure expanding ring 04. The main flow guiding and pressure expanding ring 012 is installed at the air outlet port of the fan housing 01, and the secondary flow guiding and pressure expanding ring 04 is installed at the air inlet port of the air outlet port of the fan housing 01; both the main flow guiding and pressure expanding ring 012 and the secondary flow guiding and pressure expanding ring 04 are in the shape of a "flare"; the selected range of the radian angle α of the main flow guiding and pressure expanding ring 012 is 15° to 20°, and the selected range of the radian angle β of the secondary flow guiding and pressure expanding ring 04 is 5° to 8°; the flow guiding and strengthening rib 06 is arranged at both ports of the fan housing 01; an intermediate strengthening rib 07 is provided on the fan housing 01, and the intermediate strengthening rib 07 is arranged at the middle position of the fan housing 01;

[0047] Among them, the rotating bracket 05 includes a bracket, a rotating shaft, an arc-shaped groove 051 and a limiting member. The bracket is installed on the fan housing 01 through the rotating shaft. A limiting member is provided on the fan housing 01 near the rotating shaft. An arc-shaped groove 051 is provided on the bracket, and the arc-shaped groove 051 corresponds to the limiting member, and the limiting member is placed in the arc-shaped groove 051;

[0048] Among them, the drive motor 02 includes a bottom case 23, a circuit control board 26, a motor lower case 22, a motor core 25, a motor upper case 24, and a heat dissipation block 21. The circuit control board 26, the motor lower case 22, and the heat dissipation block 21 are installed on the bottom case 23. The motor lower case 22 and the heat dissipation block 21 surround the circuit control board 26. The motor core 25 is installed in the cavity formed by the motor lower case 22 and the motor upper case 24. The drive end of the motor core 25 penetrates the motor upper case 24 and is connected to the fan. The motor upper case 24 is installed on the motor bracket 03. The power supply end of the circuit control board 26 is electrically connected to an external power supply. The control end of the circuit control board 26 is electrically connected to the control end of the motor core 25. The circuit control board 26 is used to control the operation of the motor core 25 and thus drive the fan to rotate;

[0049] Among them, a heat dissipation net is provided on the bottom case 23, and the heat dissipation net corresponds to the heat dissipation block 21; the heat dissipation block 21 is made of aluminum material, and several heat dissipation fins are provided on the heat dissipation block 21.

[0050] Specific embodiments of the present invention: After assembling the axial flow fan, for the two fan cases (the upper fan case and the lower fan case) injection molded by the same mold, a positioning plate can be placed in the groove of the lower fan case, and then the groove of the upper fan case is sleeved on the positioning plate, and the upper fan case and the lower fan case are stably connected with screws. The rotating bracket is installed on the upper fan case, and the arc-shaped groove and the limiting member cooperate with each other. By manually rotating the bracket, the angle of the fan case can be adjusted. The main retaining net can be installed on the fan case through the double rod piece and then with screws, and the secondary retaining net can be installed on the fan case through screws; for the drive motor, the motor lower case of the drive motor is integrally injection molded with plastic and then covered on the circuit control board, and the motor lower case and the bottom case are sealed and connected with sealant to achieve the waterproof effect; the motor lower case and the heat dissipation block can be combined and spliced into a cylinder. Here, the heat dissipation block is selected as a part of the cylinder, and the heat dissipation block is an aluminum heat dissipation block with multiple heat dissipation fins, which can effectively dissipate heat from the circuit control board, etc.

[0051] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waterproof heat dissipation axial flow fan, characterized in that: The waterproof and heat-dissipating axial flow fan comprises: a fan casing, a motor bracket, a flow-guiding and pressure-diffusing mechanism, a fan and a driving motor, wherein the fan casing is provided with the flow-guiding and pressure-diffusing mechanism, the motor bracket is installed at the air inlet port of the fan casing, the driving motor is installed on the motor bracket, and the fan is installed on the driving end of the driving motor; Among them, the driving motor includes a bottom shell, a circuit control board, a motor lower shell, a motor core, a motor upper shell and a heat sink. The circuit control board, the motor lower shell and the heat sink are installed on the bottom shell. The motor lower shell and the heat sink surround the circuit control board. The motor core is installed in a cavity surrounded by the motor lower shell and the motor upper shell. The driving end of the motor core passes through the motor upper shell and is connected to the fan. The motor upper shell is installed on the motor bracket. The power supply end of the circuit control board is electrically connected to an external power supply. The control end of the circuit control board is electrically connected to the control end of the motor core. The circuit control board is used to control the operation of the motor core and thereby drive the fan to operate.

2. The waterproof and heat-dissipating axial flow fan according to claim 1, characterized in that: The waterproof and heat-dissipating axial-flow fan also includes a rotating bracket, on which the fan housing can be rotatably mounted, and the rotating bracket is used to mount the waterproof and heat-dissipating axial-flow fan on other objects.

3. The waterproof heat dissipation axial flow fan according to claim 2, characterized in that: The fan housing is provided with flow guide reinforcement ribs.

4. The waterproof and heat-dissipating axial flow fan according to claim 1, characterized in that: The fan casing comprises an upper fan casing and a lower fan casing, and the upper fan casing and the lower fan casing form a whole fan casing.

5. The waterproof and heat-dissipating axial flow fan according to claim 1, characterized in that: The bottom shell is provided with a heat dissipation net, and the heat dissipation net corresponds to the heat dissipation block.

6. The waterproof and heat-dissipating axial flow fan according to claim 4, characterized in that: The upper fan casing and the lower fan casing are both semicircular fan casings, and the upper fan casing and the lower fan casing are the same semicircular fan casing.

7. The waterproof and heat-dissipating axial flow fan according to claim 1, characterized in that: The heat sink block is made of aluminum and is provided with a plurality of heat sinks.

8. The waterproof and heat-dissipating axial flow fan according to claim 1, characterized in that: The flow guide and pressure diffuser mechanism comprises a main flow guide and pressure diffuser ring and a secondary flow guide and pressure diffuser ring. The main flow guide and pressure diffuser ring is installed at the air outlet port of the fan housing, and the secondary flow guide and pressure diffuser ring is installed at the air inlet port of the air outlet port of the fan housing.

9. The waterproof and heat-dissipating axial flow fan according to claim 8, characterized in that: The main flow diffuser ring and the secondary flow diffuser ring both present a "bell-mouth" shape.

10. The waterproof and heat-dissipating axial flow fan according to claim 9, characterized in that: The arc angle of the main guide diffuser ring is selected in the range of 15° to 20°, and the arc angle of the secondary guide diffuser ring is selected in the range of 5° to 8°.

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