Double-air-duct fan device with adjustable air volume

Abstract

The utility model discloses an air-volume-adjustable double-air-duct fan device which comprises an upper fan cover and a lower fan cover, the upper fan cover and the lower fan cover are connected together through bolts to form a cylindrical cooling device, and the cylindrical cooling device is arranged at the joint of a speed reducer and a permanent magnet motor in a sleeved mode. An air duct partition plate is arranged in the cylindrical cooling device; an air duct is arranged at the top of the upper fan cover and fixedly connected with an air outlet of the fan, and a rotatable air guide plate is arranged in the air duct and used for guiding airflow provided by the fan to the left side or the right side of the air duct partition plate. The utility model has the beneficial effects that the rotatable air deflector is arranged in the air duct and is used for guiding the air flow provided by the fan to the left side or the right side of the air duct partition plate, so that the position of the air deflector is adjusted according to the cooling requirements of the permanent magnet motor and the speed reducer, and the flow speed and flow of the cooling air flow entering the permanent magnet motor and the speed reducer are changed.

Description

Technical Field

[0001] The utility model belongs to the technical field of air-cooling integrated motor air-cooling technology, and particularly relates to a dual-duct fan device with adjustable air volume. Background Technique

[0002] For a three-in-one or two-in-one motor drive power unit, the cooling fan is often installed at the tail or head of the motor. Common fan cooling devices include centrifugal and axial types according to the working principle of the fan.

[0003] In traditional air-cooling devices, after the cooling fan is powered on, it rotates to drive the impeller to rotate, generating a pressure difference. The air is rectified through an integral air shroud and blown from one end of the integrated motor to the other end. The main components are a semi-open air shroud and a fan motor. Due to obstacles caused by different forms of the motor's peripheral structure, the air volume and cooling effect gradually weaken. The following problems and disadvantages exist in this structural design:

[0004] 1. The air duct is single. Due to the orientation of the fan impeller and the structure of the air shroud, it is impossible to split the air generated by the fan impeller unless a new air duct is additionally installed.

[0005] 2. The air volume is fixed. Generally, fan motors are fixed-frequency motors, and the rotation speed and impeller performance parameters are fixed, making it impossible to adjust the air volume.

[0006] 3. The air shroud is integral, and the rectifying air shroud is circular or polygonal. After the air-cooled motor is installed, if a forced air-cooling device needs to be added, there will be certain limitations; the limiting factors are mainly of two types:

[0007] The axial-flow air-cooling device does work from the tail of the motor and acts on the shaft extension end of the motor with a certain air volume. Due to the obstruction of structural components, the air volume and wind speed gradually weaken, which is not conducive to the heat dissipation of the heat generation power unit at the shaft extension end of the integrated motor;

[0008] While the centrifugal air-cooling device can be installed from the shaft extension end and the tail of the motor, but the local cooling effect is not ideal. Summary of the Invention

[0009] The purpose of the embodiment of the utility model is to provide a dual-duct fan device with adjustable air volume, aiming to solve the technical problem that due to the obstruction of structural components in the prior art, the air volume and wind speed gradually weaken, which is not conducive to the heat dissipation of the heat generation power unit at the shaft extension end of the integrated motor.

[0010] The embodiment of the utility model is implemented as follows:

[0011] A double-duct fan device with adjustable air volume, the double-duct fan device includes an upper air hood and a lower air hood, the upper air hood and the lower air hood are connected together by bolts to form a cylindrical cooling device, which is sleeved on the connection part of the reducer and the permanent magnet motor; a duct partition is arranged inside the cylindrical cooling device; a duct is arranged at the top of the upper air hood, the duct is fixedly connected to the air outlet of the fan, and a rotatable air guide plate is arranged inside the duct for guiding the air flow provided by the fan to the left or right side of the duct partition.

[0012] Further, the cross-section of the cooling device is octagonal.

[0013] Further, the upper air hood sequentially includes a first baffle, a second baffle, a third baffle, a fourth baffle and a fifth baffle connected end to end from one side to the other side; the lower air hood includes a bottom plate, two side plates and two vertical plates; wherein the two vertical plates are respectively connected to the first baffle and the fifth baffle, so that the upper air hood and the lower air hood are enclosed into an octagonal channel.

[0014] Further, a second connecting plate is arranged at the bottom of the upper air hood, a third connecting plate is arranged at the top of the lower air hood, and the second connecting plate and the third connecting plate are connected together by bolts.

[0015] Further, a semi-circular upper duct partition is welded in the middle of the upper air hood, and a semi-circular lower duct partition is welded in the middle of the lower air hood. When the upper air hood 401 and the lower air hood 4 are closed, the upper duct partition and the lower duct partition form a complete circular duct partition.

[0016] Further, a first connecting plate is arranged at the top of the duct, the first connecting plate is provided with a plurality of fixing holes, and the duct is fixedly connected to the fan by using screws through the fixing holes; arc-shaped grooves are symmetrically arranged on both sides of the duct, and sector plates are arranged outside the arc-shaped grooves. The air guide plate is rotatably connected to the center of the sector plate through a second fixed shaft and slides in the arc-shaped groove through a first fixed shaft to change the angle of the air guide plate.

[0017] The positive effect of the present utility model is: through the cylindrical cooling device, which is sleeved on the connection part of the reducer 1 and the permanent magnet motor, and a duct partition is arranged inside the cylindrical cooling device to separate the air flow provided by the fan and supply it to the permanent magnet motor and the reducer respectively. At the same time, a rotatable air guide plate is arranged inside the duct for guiding the air flow provided by the fan to the left or right side of the duct partition. In this way, according to the cooling requirements of the permanent magnet motor and the reducer, the position of the air guide plate is adjusted to change the flow rate and flow volume of the cooling air flow entering the permanent magnet motor and the reducer, so as to solve the technical problem in the prior art that due to the obstruction of structural parts, the air volume and air speed gradually weaken, which is not conducive to the heat dissipation of the heat generation power unit at the shaft extension end of the integrated motor. Description of the Drawings

[0018] Figure 1It is a schematic diagram of the application scenario structure of a double-duct fan device with adjustable air volume according to the present utility model;

[0019] Figure 2 It is Figure 1 a three-dimensional structure diagram of the connection between a double-duct fan device with adjustable air volume according to the present utility model and a fan as shown in

[0020] Figure 3 It is Figure 2 a three-dimensional view of a double-duct fan device with adjustable air volume according to the present utility model as shown in

[0021] Figure 4 It is Figure 3 a three-dimensional structure diagram of the upper air duct cover of a double-duct fan device with adjustable air volume according to the present utility model as shown in

[0022] Figure 5 It is Figure 3 a three-dimensional structure diagram of the lower air duct cover of a double-duct fan device with adjustable air volume according to the present utility model as shown in

[0023] Figure 6 It is Figure 3 a front view of the air guide plate of a double-duct fan device with adjustable air volume according to the present utility model as shown in

[0024] Figure 7 It is Figure 6 a half-sectional view of the air guide plate of a double-duct fan device with adjustable air volume according to the present utility model as shown in

[0025] Legend: 1 - speed reducer, 2 - fan, 3 - permanent magnet motor, 4 - cooling device, 401 - upper air duct cover, 40101 - sector plate, 40102 - air duct, 40103 - first connecting plate, 40104 - air guide plate, 401041 - first threaded hole, 401042 - second threaded hole, 401043 - through shaft, 40105 - arc groove, 40106 - second position of the air guide plate, 40107 - upper air duct partition, 40108 - first fixed shaft, 40109 - second fixed shaft, 40110 - second connecting plate, 40111 - first baffle, 40112 - second baffle, 40113 - third baffle, 40114 - fixing hole, 40115 - handle, 40116 - fourth baffle, 40117 - fifth baffle, 40118 - first flange, 402 - lower air duct cover, 40201 - lower air duct partition, 40202 - second flange, 40203 - side plate, 40204 - vertical plate, 40205 - third connecting plate, 40206 - bottom plate. Detailed implementation manners

[0026] The present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments:

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and 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, and therefore should not be construed as a limitation to the present utility model.

[0028] In order to make the objectives, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0029] As Figures 1 to 7 shown, it is a structural diagram of a double-duct fan device with adjustable air volume provided by an embodiment of the present utility model, including an upper air hood 401 and a lower air hood 402. The upper air hood 401 and the lower air hood 402 are connected together by bolts to form a cylindrical cooling device 4, which is sleeved on the connection part of the speed reducer 1 and the permanent magnet motor 3; a duct partition is provided inside the cylindrical cooling device 4; a duct 40102 is provided at the top of the upper air hood 401, and the duct 40102 is fixedly connected to the air outlet of the fan 2. A rotatable air guide plate 40104 is provided inside the duct 40102 for guiding the air flow provided by the fan to the left or right side of the duct partition.

[0030] In the embodiment of the present utility model, through the cylindrical cooling device 4, which is sleeved on the connection part of the speed reducer 1 and the permanent magnet motor 3, and a duct partition is provided inside the cylindrical cooling device 4 to separate the air flow provided by the air into the permanent magnet motor 3 and the speed reducer 1 respectively. At the same time, a rotatable air guide plate 40104 is provided inside the duct 40102 for guiding the air flow provided by the fan to the left or right side of the duct partition. In this way, according to the cooling requirements of the permanent magnet motor 3 and the speed reducer 1, the position of the air guide plate 40104 is adjusted to change the flow rate and flow volume of the cooling air flow entering the permanent magnet motor 3 and the speed reducer 1, and the technical problem in the prior art that the air volume and air speed gradually weaken due to the obstruction of structural components, which is not conducive to the heat dissipation of the heat generation power unit at the shaft extension end of the integrated motor, is solved.

[0031] Specifically, as Figures 1 to 7As shown in the figure, a double-duct fan device with adjustable air volume includes an upper wind cover 401 and a lower wind cover 402. The upper wind cover 401 and the lower wind cover 402 are connected together by bolts to form a cylindrical cooling device 4, which is sleeved on the connection part of the reducer 1 and the permanent magnet motor 3. A duct partition is provided inside the cylindrical cooling device 4. A duct 40102 is provided at the top of the upper wind cover 401. The duct 40102 is fixedly connected to the air outlet of the fan 2. A rotatable air deflector 40104 is provided inside the duct 40102 for guiding the air flow provided by the fan to the left or right side of the duct partition.

[0032] Among them, the cross-section of the cooling device 4 is octagonal, including an upper wind cover 401 and a lower wind cover 402. The upper wind cover 401 successively includes a first baffle 40111, a second baffle 40112, a third baffle 40113, a fourth baffle 40116, and a fifth baffle 40117 connected end to end from one side to the other side. The lower wind cover 402 includes a bottom plate 40206, two side plates 40203, and two vertical plates 40204. Among them, the two vertical plates 40204 are respectively connected to the first baffle 40111 and the fifth baffle 40117, so that the upper wind cover 401 and the lower wind cover 402 are enclosed into an octagonal channel.

[0033] Here, the octagonal wind cover design is fully considered in view of factors such as the lifting rings, lugs, support rib plates, and circumferential heat dissipation fin heights of the integrated motor. To prevent interference, a polygonal design is selected to fully fit the circular design. At the same time, the circular design is excluded, also considering the reasons for the split structure. The upper and lower semi-circular wind covers have relatively complex shaping processes and unsatisfactory effects. After welding, it is very easy to deform. The octagonal design wind cover has a relatively simple process, and compared with the quadrilateral and hexagon, it has a smaller volume, and compared with the hexadecagon, it has a simpler structure and smaller weight. Considering the above influencing factors comprehensively, this design balances volume, weight, and space, realizing the upgrade and optimization of the wind cover design. Specifically, as Figure 4 shown, the second baffle 40112 is provided with through holes and notches for avoiding the rib plates protruding from the surface of the permanent magnet motor or the reducer. For another example, the lower left corners of the first baffle 40111 and the fifth baffle 40117 are provided with first flanges for supplementing the areas that cannot be covered by the lower wind cover. For another example, as Figure 5 shown, second flanges 40202 are provided on the left sides of the two side plates 40203 for extending the flow distance of the bottom air flow on the surface of the permanent magnet motor or the reducer.

[0034] Preferably, a second connecting plate 40110 is provided at the bottom of the upper wind cover, and a third connecting plate 40205 is provided at the top of the lower wind cover. The second connecting plate 40110 and the third connecting plate 40205 are connected together by bolts.

[0035] Further, a semi-circular upper air duct partition 40107 is welded to the middle of the upper air hood 401, and a semi-circular lower air duct partition 40201 is welded to the middle of the lower air hood 402. When the upper air hood 401 and the lower air hood 402 are closed, the upper air duct partition 40107 and the lower air duct partition 40201 form a complete circular air duct partition.

[0036] Further, a first connecting plate 40103 is provided at the top of the air duct 40102. The first connecting plate 40103 is provided with a number of fixing holes 40114. The air duct 40102 is fixedly connected to the fan 2 through the fixing holes 40114 by bolts.

[0037] Further, the air duct 40102 is a rectangular air duct, and the first connecting plate 40103 is rectangular and annular. The fixing holes 40114 are distributed around the first connecting plate 40103.

[0038] Further, arc-shaped grooves 40105 are symmetrically provided on both sides of the air duct 40102. Sector plates 40101 are provided outside the arc-shaped grooves 40105. The air guiding plate 40104 is rotatably connected to the center of the sector plate 40101 through a second fixed shaft 40109 and slides in the arc-shaped groove 40105 through a first fixed shaft 40108 to change the angle of the air guiding plate 40104, such as from Figure 3 the position of the middle air guiding plate 40104 to the second position 40106 of the air guiding plate.

[0039] Further, as Figure 6 shown, the air guiding plate 40104 is provided with a through shaft 401043. Second threaded holes 401042 are provided at both ends of the through shaft to form the second fixed shaft 40109. The second threaded holes 401042 are rotatably connected to the center of the sector plate 40101 through bolts. First threaded holes 401041 are provided on both sides of the middle of the air guiding plate 40104. Bolts are threadedly connected to the first threaded holes 401041 and slide in the arc-shaped groove 40105 to form the first fixed shaft 40108.

[0040] The foregoing has broadly outlined some aspects and features of various embodiments, which should be construed as merely illustrative of various potential applications. Other beneficial results can be obtained by applying the disclosed information in different ways or by combining various aspects of the disclosed embodiments. Based on the scope defined by the claims, a more comprehensive understanding of other aspects can be obtained by referring to the specific description of the exemplary embodiments in conjunction with the drawings.

[0041] The above embodiments have described the present utility model in detail. Of course, the above description is not a limitation on the present utility model, and the present utility model is not limited to the above examples either. Changes, modifications, additions, deletions, or substitutions made by those skilled in the art within the substantial scope of the present utility model also fall within the protection scope of the present utility model.

Claims

1. A dual-duct fan device with adjustable air volume, characterized in that, The double-air duct fan device includes an upper air hood and a lower air hood. The upper air hood and the lower air hood are connected together by bolts to form a cylindrical cooling device, which is sleeved on the connection part of the speed reducer and the permanent magnet motor. A duct partition is arranged inside the cylindrical cooling device. There is a duct on the top of the upper air hood, and the duct is fixedly connected to the air outlet of the fan. A rotatable air deflector is arranged in the duct for guiding the air flow provided by the fan to the left or right side of the duct partition.

2. The dual-duct fan device with adjustable air volume according to claim 1, wherein, The cross-section of the cooling device is octagonal.

3. The dual-duct fan device with adjustable air volume according to claim 2, characterized in that, The upper air hood sequentially includes a first baffle, a second baffle, a third baffle, a fourth baffle and a fifth baffle connected end to end from one side to the other side. The lower air hood includes a bottom plate, two side plates and two vertical plates. Among them, the two vertical plates are respectively connected to the first baffle and the fifth baffle, so that the upper air hood and the lower air hood are enclosed into an octagonal channel.

4. The dual-duct fan device with adjustable air volume according to claim 3, characterized in that A second connecting plate is arranged at the bottom of the upper air hood, and a third connecting plate is arranged at the top of the lower air hood. The second connecting plate and the third connecting plate are connected together by bolts.

5. The air volume adjustable double-duct fan device according to any one of claims 1 to 4, characterized in that, A semi-circular upper duct partition is welded in the middle of the upper air hood, and a semi-circular lower duct partition is welded in the middle of the lower air hood. When the upper air hood and the lower air hood are closed, the upper duct partition and the lower duct partition form a complete circular duct partition.

6. The dual-duct fan device with adjustable air volume according to claim 5, characterized in that, A first connecting plate is arranged at the top of the duct. The first connecting plate is provided with a plurality of fixing holes. The duct is fixedly connected to the fan by using screws through the fixing holes. Arc-shaped grooves are symmetrically arranged on both sides of the duct. Sector plates are arranged on the outer sides of the arc-shaped grooves. The air deflector is rotatably connected to the center of the sector plate through a second fixed shaft and slides in the arc-shaped groove through a first fixed shaft to change the angle of the air deflector.

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