Efficient fan of self-circulation motor heat dissipation structure

Abstract

The utility model relates to an efficient fan of a self-circulation motor heat dissipation structure, which comprises a motor, the left side and the right side of the lower end of the motor are fixedly connected with same fixing supports, the lower ends of the fixing supports are fixedly connected with a bottom plate, the bottom plate is placed in a low-pressure cavity, the outer side of the bottom plate is wrapped with a high-pressure cavity, and the outer side of the high-pressure cavity is connected with a guide vane. The outer side of the guide vane is fixedly connected with a fan outer side protection shell, an output shaft is arranged at the front end of the motor, the front end of the output shaft is fixedly connected with a rotary disc, the front end of the rotary disc is fixedly connected with an impeller disc, and the front end of the outer side of the impeller disc is fixedly connected with a large blade. The impeller ribs in the impeller disc rotate to form centrifugation, so that hot air in a low-pressure area is subjected to air convection circulation heat dissipation at the motor mounting position and the fixed support position, and the surface heat dissipation problem of the motor driven in the fan is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of axial flow fans, in particular to a high-efficiency fan with a self-circulating motor heat dissipation structure. Background Art

[0002] In view of the development of the new breeding industry, the automatic and intelligently controlled ventilation system is upgraded synchronously to replace the original single-controlled AC fan. Now the new permanent magnet synchronous EC fan is used to greatly improve the efficiency and significantly reduce the electricity bill of farmers. At the same time, it provides farmers with safe and reliable automatic control and reduces labor costs. At the same time, the installation space of farmers is designed, and the heat dissipation of the drive motor wrapped by the fan needs to be considered. This requires the consideration of multiple structures. The motor cannot achieve heat dissipation in a small installation space. The heat dissipation structure of the motor is made very large, which greatly wastes the utilization space of the fan. In addition, the current EC fan with large air volume also needs to consider the noise problem. Farmers provide livestock with a relatively quiet space, which is conducive to the healthy growth of livestock and increases income for farmers.

[0003] Patent application number CN202223458974.3 discloses an axial flow fan impeller and an axial flow fan, which uses a support frame to provide all-round fixed support to the outer wall of the axial flow fan in a sleeve-knotted manner, and then fixes the bottom of the axial flow fan through a support block, so that the axial flow fan is more stable, reduces and reduces vibration, and improves the rotation efficiency of the impeller. One end of the fan blade is connected to the inside of the connecting port through a connecting rod, so that the fan blade is connected to the impeller, and then the positioning rod is penetrated for fixing, which is convenient for replacing different types of fan blades and improving the applicability of the device. However, the axial flow fan has the following problems: First, the motor is installed directly on the fan hub, and only one The fan is installed in layers, so there is a problem. The characteristic of the axial flow fan is that the middle of the fan is in a low-pressure area, which causes the wind speed of the fan to be extremely low. In addition, the problem of the hub makes it impossible to dissipate the heat of the motor. Secondly, because the structure of the motor cannot effectively dissipate the heat, the structure of the motor needs to increase the axial length, resulting in a large motor size and high cost. In addition, the axial length of the motor is relatively long, resulting in a very long axial length of the fan. After the axial length of the motor is very long, the center of gravity of the fan and the installation of the wind wheel are biased towards the motor, resulting in the impeller being installed in a partial cone. Due to the principle of leverage, the bearing force will be affected, affecting the service life of the motor. Utility Model Content

[0004] The purpose of the utility model is to address the deficiencies of the prior art. By setting a low-pressure chamber and a high-pressure chamber, the low-pressure area of ​​the axial flow fan is isolated, and the impeller ribs in the impeller disk are rotated to form a centrifugal force, so that the hot air in the low-pressure area is circulated and dissipated by air convection at the motor installation position and the fixed bracket position, thereby solving the problem of heat dissipation on the surface of the motor driven inside the fan, thereby solving the technical problem that the axial length of the motor is too long and affects the service life.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A high-efficiency fan with a self-circulating motor heat dissipation structure, comprising a motor, wherein the left and right sides of the lower end of the motor are fixedly connected to the same fixing bracket, the lower end of the fixing bracket is fixedly connected to a bottom plate, the bottom plate is placed in a low-pressure chamber, and the outer side of the bottom plate is wrapped with a high-pressure chamber, the outer side of the high-pressure chamber is connected to a guide vane, and the outer side of the guide vane is fixedly connected to an outer protective shell of the fan;

[0007] The motor has an output shaft at its front end, the output shaft is fixedly connected to a rotating disk, the rotating disk is fixedly connected to an impeller disk, and the outer front end of the impeller disk is fixedly connected to a large blade.

[0008] As a preferred embodiment, the front end of the outer protective shell of the fan is a rectangular surface, and the rear end is a circular surface. The four vertices of the rectangular surface are all circular transitions, and a circular installation cavity is provided at the center of the rectangular surface. The circular installation cavity is provided with grooves near the vertices of the rectangular surface, and a mesh cover is installed in the groove. A regular octagonal block is provided at the center of the mesh cover. The regular octagonal block is arranged at the center of the circular installation cavity, and the surface of the circular surface is provided with the same mesh cover.

[0009] Preferably, the fixed bracket includes a bevel block, a raised limit strip is provided on one side of the bevel blocks close to each other, and a fixed installation rectangular block is provided at the front and rear ends of the bevel blocks, a mounting hole is opened at the center position of the fixed installation rectangular block, and a screw fixing is provided in the mounting hole.

[0010] As a preferred embodiment, mounting holes are opened on both sides of the bottom plate, and a sealing plate is provided on the front side of the lower end of the bottom plate, the rear end of the sealing plate is evenly fixedly connected to three vertical plates, the upper ends of the vertical plates are fixedly connected to the bottom plate, and the lower ends of the vertical plates are connected to high-pressure circular wrapping blocks.

[0011] As a preferred embodiment, a low-pressure circular wrapping block is provided on the outside of the low-pressure chamber, the lower end of the low-pressure circular wrapping block is connected to the bottom plate, and the outside of the low-pressure circular wrapping block is evenly fixedly connected to a support plate, and the outside of the support plate is connected to a high-pressure circular wrapping block.

[0012] As another preferred embodiment, the impeller disk includes an inner connecting disk, a connecting hole is provided at the center position of the inner connecting disk, the connecting hole is fixedly connected to the output shaft, and the outer side of the connecting hole is connected to a rib beam, the rear side of the inner connecting disk is fixedly connected to a turntable, and the diameter of the turntable is equal to the diameter of the inner connecting disk, and the outer side of the inner connecting disk is evenly connected to the impeller ribs.

[0013] Beneficial effects of the utility model:

[0014] (1) The utility model sets a low-pressure chamber and adopts a double-layer installation structure of a rotating disk and an impeller disk to isolate the low-pressure area inside the axial flow fan. The impeller ribs of the impeller disk are used to form a centrifugal force during rotation, so that the hot air in the low-pressure chamber is circulated and dissipated by air convection between the motor, the impeller disk and the fixed bracket, thereby solving the heat dissipation problem of the motor surface inside the axial flow fan and effectively improving the service life of the motor.

[0015] (2) In the present invention, by setting large blades, increasing the inclination angle, increasing the wind sweeping area, and improving the ventilation efficiency, the axial flow fan can output a large air volume even at a low speed. When the axial flow fan is running at a low speed, the noise of the axial flow fan can be greatly reduced, which is conducive to the growth of livestock.

[0016] (3) In the utility model, a low-pressure chamber and a high-pressure chamber are provided, and guide vanes and large blades are used to reduce the axial length of the motor, shorten the main body of the motor, and shorten the shaft extension of the motor. The center of gravity of the impeller disk is as close as possible to the turntable of the motor. In this way, the turntable and the output shaft are reduced to form a long rod and rocker arm structure due to the lever principle, which damages the bearing at the connection position of the output shaft and the motor and shortens the life of the motor.

[0017] In summary, the equipment has the advantages of short motor axis, long service life, strong heat dissipation capacity of motor surface, low fan operation noise in double-layer installation structure, and is beneficial to livestock growth, and is particularly suitable for the field of axial flow fan technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 This is a schematic diagram of the position structure of the motor in the utility model.

[0021] Figure 3This is a schematic diagram of the position structure of the low-pressure chamber and the high-pressure chamber in the utility model.

[0022] Figure 4 It is a structural schematic diagram of the output shaft and the rotating disk in the utility model.

[0023] Figure 5 It is a structural schematic diagram of the fixing bracket in the utility model.

[0024] Figure 6 It is a schematic diagram of the structure of the impeller disc in the utility model. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present utility model are clearly and completely described below in conjunction with the accompanying drawings.

[0026] Embodiment 1

[0027] like Figures 1 to 6 As shown, the utility model provides a high-efficiency fan with a self-circulating motor heat dissipation structure, including a motor 1, wherein the same fixing brackets 11 are fixedly connected to the left and right sides of the lower end of the motor 1, and the lower end of the fixing bracket 11 is fixedly connected to a bottom plate 2, the bottom plate 2 is placed in a low-pressure chamber 3, and a high-pressure chamber 4 is wrapped on the outside of the bottom plate 2, the outside of the high-pressure chamber 4 is connected to a guide vane 41, and the outside of the guide vane 41 is fixedly connected to the outer protective shell 42 of the fan;

[0028] The motor 1 has an output shaft 12 at its front end, the front end of the output shaft 12 is fixedly connected to a rotating disk 13, the front end of the rotating disk 13 is fixedly connected to an impeller disk 5, and the outer front end of the impeller disk 5 is fixedly connected to a large blade 51.

[0029] Furthermore, the front end of the fan outer protective shell 42 is a rectangular surface 421, and the rear end is a circular surface 422. The four vertices of the rectangular surface 421 are all circular transitions, and a circular installation cavity is provided at the center of the rectangular surface 421. The circular installation cavity is provided with a groove 423 near the vertex of the rectangular surface 421. A mesh cover 6 is installed in the groove 423. A regular octagonal block 61 is provided at the center of the mesh cover 6. The regular octagonal block 61 is arranged at the center of the circular installation cavity. The surface of the circular surface 422 is provided with the same mesh cover 6, and the front end surface is arranged as a rectangular surface 422, which is convenient for installing and fixing the entire axial flow fan. The mesh cover 6 arranged at the front and back can effectively reduce the damage to the internal structure of the axial flow fan during transportation. The setting of the regular octagonal block 61 is not only beautiful, but also does not affect the overall heat dissipation effect. Secondly, it can also print logos to facilitate corporate promotion and sales.

[0030] Furthermore, the fixing bracket 11 includes a bevel block 111, and a raised limiting strip 112 is provided on one side of the bevel blocks 111 close to each other, and a fixed installation rectangular block 113 is provided at the front and rear ends of the bevel blocks 111. A mounting hole is opened at the center of the fixed installation rectangular block 113, and a screw fixing part 114 is provided in the mounting hole. The bevel block 111 is arranged to fit the installation side of the motor 1 to facilitate the fixing of the position of the motor 1. A conventional heat dissipation strip is provided on the outer side of the motor, and then the raised limiting strip 112 is used to clamp and limit with the heat dissipation strip on the side of the motor to ensure that the installation position of the motor 1 is stable.

[0031] Furthermore, mounting holes are provided on both sides of the base plate 2, and a sealing plate 21 is provided on the front side of the lower end of the base plate 2. The rear end of the sealing plate 21 is evenly fixedly connected to three vertical plates 22. The upper ends of the vertical plates 22 are fixedly connected to the base plate 2, and the lower ends of the vertical plates 22 are connected to the high-pressure circular wrapping block 43. The base plate 2 is to ensure the stable installation of the motor 1. The base plate 2 is then located in the low-pressure chamber 3. The heat generated by the motor 1 is located in the low-pressure chamber 3. Then, the impeller ribs 53 in the impeller disk 5 rotate, so that the heat in the low-pressure chamber 3 is brought into the high-pressure chamber 4, thereby achieving effective heat dissipation and extending the service life of the motor.

[0032] Furthermore, a low-pressure circular wrapping block 31 is provided on the outside of the low-pressure chamber 3, and the lower end of the low-pressure circular wrapping block 31 is connected to the bottom plate 2, and the outside of the low-pressure circular wrapping block 31 is evenly fixedly connected to the support sheet 32, and the outside of the support sheet 32 ​​is connected to the high-pressure circular wrapping block 43. The low-pressure circular wrapping block 31 and the high-pressure circular wrapping block 43 wrap the low-pressure chamber 3 and the high-pressure chamber 4, and then the high-pressure chamber 4 is divided into uniform cavities by the support sheet 32, and the impeller rib position 53 is used as a centrifuge to further reduce the air pressure around the motor 1. According to the working principle of fluid, after the air is centrifuged, high pressure is formed in the high-pressure chamber 4 to press the air out, and at the same time, a cooling cycle is performed with the high pressure blown out by the axial flow fan.

[0033] Furthermore, the impeller disk 5 includes an inner connecting disk 52, a connecting hole is provided at the center position of the inner connecting disk 52, the connecting hole is fixedly connected to the output shaft 12, and the outer side of the connecting hole is connected to a rib beam, the rear side of the inner connecting disk 52 is fixedly connected to a turntable 13, and the diameter of the turntable 13 is equal to the diameter of the inner connecting disk 52, and the outer side of the inner connecting disk 52 is evenly connected to the impeller rib position 53, and the impeller rib position 53 can form air centrifugation when the impeller disk 5 rotates to throw out the hot air; the large blades 51 form a large-area wind sweeping, and the large inclination angle increases the wind sweeping speed, thereby improving the air flow speed of the fan.

[0034] Working process: first, the fixed brackets 11 are installed on the left and right sides of the motor 1, and then the fixed brackets 11 are fixedly connected to the bottom plate 2, the output shaft 12 is fixedly connected to the turntable 13, and the turntable 13 is fixedly connected to the impeller disc 5. The motor 1 drives the impeller disc 5 to rotate, and the impeller disc 5 drives the large blades 51 to start rotating. The heat in the low-pressure chamber 3 outside the motor 1 is centrifuged by the rotation of the impeller ribs 53 to form air centrifugation, so that the heat enters the high-pressure chamber 4, and the rotation of the large blades 51 drives the heat dissipation on the motor surface;

[0035] It is worth noting that the large blades 51 are used to increase the swept area, and the guide vanes 41 are used to increase the static pressure of the fan, thereby improving the ventilation efficiency of the fan. At the same time, the large blades have a wind sweeping effect, so that the fan can generate a large air volume at a low speed, which is comparable to the air volume that can only be generated by the same high speed on the market. As a result, the fan has a low speed and the noise is lower than that generated by the fans on the market, providing a quieter environment for livestock to help their growth.

[0036] The entire fan motor 1 has a small axial length, good heat dissipation on the surface of the motor 1, and a long service life.

[0037] In the description of the present invention, it should be understood that the terms "front and back", "left and right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the equipment or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0038] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0039] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical guidance of the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A high-efficiency fan with a self-circulating motor heat dissipation structure, characterized in that: include A motor (1), wherein the left and right sides of the lower end of the motor (1) are fixedly connected to identical fixing brackets (11), the lower end of the fixing bracket (11) is fixedly connected to a bottom plate (2), the bottom plate (2) is placed in a low-pressure chamber (3), and the outside of the bottom plate (2) is wrapped with a high-pressure chamber (4), the outside of the high-pressure chamber (4) is connected to a guide vane (41), and the outside of the guide vane (41) is fixedly connected to an outer protective shell (42) of a fan; A motor (1), wherein an output shaft (12) is provided at a front end of the motor (1), the front end of the output shaft (12) is fixedly connected to a rotating disk (13), the front end of the rotating disk (13) is fixedly connected to an impeller disk (5), and the outer front end of the impeller disk (5) is fixedly connected to a large blade (51); The impeller disk (5) comprises an inner connecting disk (52), a connecting hole is provided at the center of the inner connecting disk (52), the connecting hole is fixedly connected to the output shaft (12), and the outer side of the connecting hole is connected to a rib beam, the rear side of the inner connecting disk (52) is fixedly connected to a rotating disk (13), and the diameter of the rotating disk (13) is equal to the diameter of the inner connecting disk (52), and the outer side of the inner connecting disk (52) is evenly connected to the impeller rib position (53).

2. The high-efficiency fan with a self-circulating motor heat dissipation structure according to claim 1 is characterized in that: The front end of the fan outer protective shell (42) is a rectangular surface (421), and the rear end is a circular surface (422). The four vertices of the rectangular surface (421) are all circular transitions, and a circular installation cavity is provided at the center of the rectangular surface (421). The circular installation cavity is provided with a groove (423) near the vertices of the rectangular surface (421). A mesh cover (6) is installed in the groove (423). A regular octagonal block (61) is provided at the center of the mesh cover (6). The regular octagonal block (61) is arranged at the center of the circular installation cavity, and the surface of the circular surface (422) is provided with a same mesh cover (6).

3. The high-efficiency fan with a self-circulating motor heat dissipation structure according to claim 1 is characterized in that: The fixing bracket (11) comprises an inclined surface block (111), a protruding limit strip (112) is provided on one side of the inclined surface blocks (111) close to each other, and a fixed installation rectangular block (113) is provided at the front and rear ends of the inclined surface blocks (111), a mounting hole is provided at the center of the fixed installation rectangular block (113), and a screw fixing member (114) is provided in the mounting hole.

4. The high-efficiency fan with a self-circulating motor heat dissipation structure according to claim 1 is characterized in that: The bottom plate (2) is provided with mounting holes on both left and right sides, and a sealing plate (21) is provided on the front side of the lower end of the bottom plate (2). The rear end of the sealing plate (21) is evenly fixedly connected to three vertical plates (22). The upper ends of the vertical plates (22) are fixedly connected to the bottom plate (2), and the lower ends of the vertical plates (22) are connected to the high-pressure circular wrapping block (43).

5. The high-efficiency fan with a self-circulating motor heat dissipation structure according to claim 1 is characterized in that: A low-pressure circular wrapping block (31) is provided on the outside of the low-pressure chamber (3), the lower end of the low-pressure circular wrapping block (31) is connected to the bottom plate (2), and the outside of the low-pressure circular wrapping block (31) is evenly fixedly connected to a support sheet (32), and the outside of the support sheet (32) is connected to a high-pressure circular wrapping block (43).

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