High-energy-efficiency mixed flow fan

Abstract

The high-energy-efficiency mixed flow fan relates to the technical field of fans and comprises a machine body, an impeller and a motor, the impeller is rotationally arranged on the machine body, the motor is arranged on the machine body, an output shaft of the motor is connected with the impeller, and a cooling mechanism used for cooling the motor is arranged on the machine body. Heat generated when the motor works is conducted through the temperature conducting plate, after the heat generated when the motor works is transferred to the temperature conducting plate, the phase-change cooling liquid exchanges heat with the temperature conducting plate through the cooling pipe, the phase-change cooling liquid absorbs heat through evaporation, and therefore the heat on the temperature conducting plate is absorbed away; and meanwhile, the circulating assembly is started to recycle the evaporated phase-change cooling liquid, so that the cooling pipe can continuously cool the temperature guide plate, the overheating probability of the motor during continuous working is reduced, the working time of the motor is prolonged, and the mixed flow fan works more efficiently.

Description

Technical Field

[0001] The present application relates to the technical field of fans, and in particular to a high-efficiency mixed-flow fan. Background Art

[0002] Mixed flow fan is a fan between axial flow fan and centrifugal fan. The impeller of mixed flow fan makes the air do both centrifugal and axial motion. The motion of air in the shell is a mixture of axial flow and centrifugal motion, so it is called "mixed flow". Mixed flow (diagonal flow) fan has a higher wind pressure coefficient than axial flow fan and a larger flow coefficient than centrifugal fan. It is used in occasions where wind pressure and flow are "neither too large nor too small". It fills the gap between axial flow fan and centrifugal fan. It has the dual characteristics of axial flow fan and centrifugal fan.

[0003] In the related art, reference can be made to the Chinese utility model patent with authorization announcement number CN208024582U, which discloses a mixed flow fan including a shell, a collector and an impeller. The bottom end of the shell is connected to the collector, and the edge of the inner cavity of the collector is connected to the impeller. The impeller includes a rotating rod and blades. Several forks are provided on the surface of the blades, and the forks form an angle of 30° with the blades.

[0004] However, the above-mentioned mixed flow fan is usually in a high temperature environment when working, and the mixed flow fan itself will generate heat during operation. Overheating of the mixed flow fan itself will cause malfunctions, so the mixed flow fan needs to be shut down for heat dissipation when its own temperature is high, resulting in the mixed flow fan being unable to work for a long time and having low working efficiency. Utility Model Content

[0005] In order to improve the heat generation of the mixed flow fan itself, the present application provides a high-efficiency mixed flow fan.

[0006] The present application provides a high-efficiency mixed flow fan, which adopts the following technical solution:

[0007] A high-efficiency mixed flow fan comprises a body, an impeller and a motor, wherein the impeller is rotatably arranged on the body, the motor is arranged on the body and the output shaft is connected to the impeller, and a cooling mechanism for cooling the motor is arranged on the body, wherein the cooling mechanism comprises:

[0008] A heat conduction plate, which is arranged on the machine body and pressed against the outer wall of the motor;

[0009] A cooling pipe, wherein the cooling pipe is arranged on the heat conducting plate, and a phase-changing cooling liquid is added into the cooling pipe;

[0010] A circulation component is arranged on the cooling pipe and is used for circulating the phase-changing cooling liquid.

[0011] By adopting the above technical solution, the heat conducting plate conducts the heat generated during the operation of the motor. After the heat generated by the motor operation is transferred to the heat conducting plate, the phase change coolant exchanges heat with the heat conducting plate through the cooling pipe. The phase change coolant evaporates and absorbs heat, thereby absorbing the heat on the heat conducting plate. At the same time, the circulation component starts to recycle the evaporated phase change coolant, so that the cooling pipe can continuously cool the heat conducting plate, reducing the probability of overheating of the motor during continuous operation, increasing the working time of the motor, and making the operation of the mixed-flow fan more efficient.

[0012] Optionally, the motor is located on the side where the impeller blows out air. One end of the cooling pipe is connected to the heat conducting plate, and the other end of the cooling pipe extends to a place where it can be blown by the impeller.

[0013] By adopting the above technical solution, the motor is arranged on the side where the impeller blows out air, so that after the cooling pipe absorbs heat through the phase change coolant, the air blown out by the rotation of the impeller of the mixed-flow fan can also blow on the cooling pipe, thereby reducing the temperature of the cooling pipe while the mixed-flow fan is operating and improving the cooling effect of the cooling pipe on the motor.

[0014] Optionally, the circulation component includes:

[0015] A sintered wall, which is arranged on the inner wall of the cooling pipe. The sintered wall is a powdery sintered wall with tiny holes. Both ends of the cooling pipe are sealed and in a state of negative pressure inside.

[0016] Heat dissipation fins. A plurality of heat dissipation fins are provided, and the plurality of heat dissipation fins are evenly distributed at the wind-receiving end of the cooling pipe.

[0017] By adopting the above technical solution, the phase change coolant in the cooling pipe is vaporized at the end where the cooling pipe is connected to the heat conducting plate. The vaporized phase change coolant moves to the wind-receiving end of the cooling pipe. By installing a plurality of heat dissipation fins at the wind-receiving end of the cooling pipe, the heat dissipation fins increase the wind-receiving area and heat dissipation area of the cooling pipe. The vaporized phase change coolant cools and condenses at the wind-receiving end of the cooling pipe. Since the phase change coolant at the end where the cooling pipe is connected to the heat conducting plate is all evaporated by heat, the sintered wall at the end of the cooling pipe close to the heat conducting plate is relatively dry, while the sintered wall at the wind-receiving end of the cooling pipe is relatively wet due to the condensation of the phase change coolant. The condensed phase change coolant flows from the wet end to the dry end on the sintered wall due to capillary action, thus completing the work of circulating and dissipating heat of the phase change coolant in the cooling pipe to the heat conducting plate.

[0018] Optionally, a connecting mechanism is provided on the machine body. The heat conducting plate is detachably connected to the machine body through the connecting mechanism. The connecting mechanism includes:

[0019] Two connecting rods. Both of the two connecting rods are arranged on the machine body, and the two connecting rods are respectively located on both sides of the motor;

[0020] A connecting frame is provided on two connecting rods. A connecting groove is formed on the connecting frame, and the heat conduction plate is located in the placement groove.

[0021] A limiting component is provided on the connecting frame and is used to limit the position of the heat conduction plate in the placement groove.

[0022] When it is necessary to move and transport the mixed-flow fan, since the cooling pipe itself needs to be sealed and there are several heat dissipation fins on the cooling pipe, these heat dissipation fins are prone to bending or damage during the overall movement and transportation of the mixed-flow fan.

[0023] By adopting the above technical solution, two connecting rods are installed on both sides of the motor, connecting frames are installed at both ends of the two connecting rods, and then the heat conduction plate is placed in the placement groove of the connecting frame and limited by the limiting component, thus completing the installation work of the heat conduction plate; when it is necessary to move and transport the mixed-flow fan, unlock the limiting component and remove the heat conduction plate from the placement groove, so that the heat conduction plate and the machine body can be separated. Subsequently, the mixed-flow fan and the cooling mechanism are separated and transported separately, reducing the probability of component damage in the cooling mechanism, and the disassembly and assembly structure is simple and convenient, with high work efficiency.

[0024] Optionally, the limiting component includes:

[0025] A limiting block. A horizontal limiting groove is formed on the inner side of the placement groove. The limiting block is slidably arranged on the connecting frame and is located in the limiting groove.

[0026] A limiting spring is arranged on the bottom wall of the inner side of the placement groove and is connected to the limiting block. The limiting block partially extends out of the limiting groove under the action of the limiting spring and abuts against the surface of the heat conduction plate. The limiting block and the bottom wall of the placement groove of the placement frame cooperate to clamp the heat conduction plate.

[0027] By adopting the above technical solution, when installing the heat conduction plate, the limiting block is squeezed to compress the limiting spring and make it enter the limiting groove. Then, after the heat conduction plate is placed in the placement groove, release the limiting block. The limiting block partially extends out of the limiting groove under the action of the limiting spring and abuts against the surface of the heat conduction plate. The limiting block and the bottom wall of the placement groove of the placement frame cooperate to clamp the heat conduction plate, thus completing the fixing work of the position of the heat conduction plate in the placement groove; when it is necessary to take out the heat conduction plate, just squeeze the limiting block into the limiting groove, which is convenient, fast and highly efficient.

[0028] Optionally, an arc-shaped guiding surface is formed on the side wall of one end of the limiting block extending out of the limiting groove and away from the heat conduction plate.

[0029] By adopting the above technical solution, an arc-shaped guiding surface is provided on the side wall of the limiting block. When the heat conducting plate is to be placed into the placement groove, the heat conducting plate first contacts the guiding surface, and the guiding surface generates a component force that drives the limiting block into the limiting groove. Thus, there is no need to manually squeeze the limiting block into the limiting groove, reducing the working intensity and improving the working efficiency.

[0030] Optionally, the connecting frame is slidably mounted on the connecting rod along the axial direction of the connecting rod. Threads are provided on the side wall of the connecting rod, and two nuts are threadedly connected to the connecting rod. The two nuts are abutted against the opposite side walls of the connecting frame, and the connecting frame drives the heat conducting plate to be abutted against the motor under the action of the two nuts.

[0031] By adopting the above technical solution, threads are provided on the connecting rod and two nuts are threadedly connected thereto. Thus, the position of the connecting frame can be adjusted by adjusting the positions of the two nuts, so that the heat conducting plate on the connecting frame can fully contact the motor, ensuring the heat conduction effect of the heat conducting plate.

[0032] Optionally, the heat conducting plate is a heat conducting plate made of red copper, and the surface of the heat conducting plate is nickel-plated.

[0033] By adopting the above technical solution, the main body of the heat conducting plate is made of red copper, so that it has good heat conduction performance and low cost at the same time. Nickel plating on the red copper reduces the probability of oxidation of the red copper when it is exposed to the working environment for a long time, making the heat conducting plate more durable and better-looking in appearance.

[0034] In summary, the present application includes at least one of the following beneficial technical effects:

[0035] 1. The heat generated during the operation of the motor is conducted by the heat conducting plate. After the heat generated by the motor operation is transferred to the heat conducting plate, the phase-change coolant exchanges heat with the heat conducting plate through the cooling pipe. The phase-change coolant evaporates and absorbs heat, thereby sucking away the heat on the heat conducting plate. At the same time, the circulation component starts to recycle the evaporated phase-change coolant, so that the cooling pipe can continuously cool the heat conducting plate, reducing the probability of overheating of the motor during continuous operation, increasing the working time of the motor, and making the operation of the mixed-flow fan more efficient;

[0036] 2. By arranging the motor on the side where the impeller blows out air, after the cooling pipe absorbs heat through the phase-change coolant, the air blown out by the rotation of the impeller of the mixed-flow fan can also blow on the cooling pipe, thereby reducing the temperature of the cooling pipe while the mixed-flow fan is operating, and improving the cooling effect of the cooling pipe on the motor;

[0037] 3. By threading the connecting rod and threadedly connecting two nuts, the position of the connecting frame can be adjusted by adjusting the positions of the two nuts, so that the heat conduction plate on the connecting frame can fully contact the motor, ensuring the heat conduction effect of the heat conduction plate. Description of the Drawings

[0038] Figure 1 is a three-dimensional structural schematic diagram of the present application;

[0039] Figure 2 is a structural schematic diagram of the cooling mechanism and the connecting mechanism in the present application, in which the side walls of the connecting frame and the cooling pipe are sectioned.

[0040] Reference numerals: 1, body; 11, impeller; 12, motor; 13, placement groove; 14, limiting groove; 2, cooling mechanism; 21, heat conduction plate; 22, cooling pipe; 23, circulation assembly; 24, sintered wall; 25, heat dissipation fins; 3, connecting mechanism; 31, connecting rod; 32, connecting frame; 33, limiting assembly; 34, nut; 35, limiting block; 36, limiting spring; 37, guiding surface. Detailed Description of the Embodiment

[0041] The following is a further detailed description of the present application in conjunction with the attached Figure 1 - attached Figure 2 to the present application.

[0042] The embodiment of the present application discloses an energy-efficient mixed-flow fan.

[0043] Refer to Figure 1 , the energy-efficient mixed-flow fan includes a body 1, an impeller 11 and a motor 12. The impeller 11 is rotatably installed on the body 1, and the motor 12 is fixedly installed on the body 1 and the output shaft is connected to the impeller 11. A cooling mechanism 2 for cooling the motor 12 is provided on the body 1.

[0044] Refer to Figure 1 and Figure 2 , the cooling mechanism 2 includes a heat conduction plate 21, a cooling pipe 22 and a circulation assembly 23. The heat conduction plate 21 is a heat conduction plate 21 made of copper, and the surface of the heat conduction plate 21 is nickel-plated. A connecting mechanism 3 is provided on the body 1, and the heat conduction plate 21 is detachably arranged on the body 1 through the connecting mechanism 3. The connecting mechanism 3 includes two connecting rods 31, a connecting frame 32 and a limiting assembly 33.

[0045] Refer to Figure 1 and Figure 2, Two connecting rods 31 are fixedly connected to the body 1 and are respectively located on both sides of the motor 12. The connecting frame 32 is slidably mounted on the two connecting rods 31 along the axial direction of the connecting rods 31. Threads are provided on the side walls of the connecting rods 31. Two nuts 34 are threadedly connected to the connecting rods 31, and the two nuts 34 cooperate to clamp the connecting frame 32. A placement groove 13 is provided on the connecting frame 32, and the heat conduction plate 21 is placed in the placement groove 13. A limiting component 33 is provided on the connecting frame 32 and is used to limit the position of the heat conduction plate 21 in the placement groove 13.

[0046] Referring to Figure 1 and Figure 2 , the limiting component 33 includes a limiting block 35 and a limiting spring 36. A limiting groove 14 is provided on the inner side wall of the placement groove 13. The limiting block 35 is slidably mounted on the connecting frame 32 and is located in the limiting groove 14. One end of the limiting spring 36 is fixedly connected to the inner bottom wall of the limiting groove 14, and the other end of the limiting spring 36 is fixedly connected to the limiting block 35. The limiting block 35 partially extends out of the limiting groove 14 under the action of the limiting spring 36 and abuts against the surface of the heat conduction plate 21. The limiting block 35 and the inner bottom wall of the placement groove 13 of the connecting frame 32 cooperate to clamp the heat conduction plate 21. An arc-shaped guiding surface 37 is provided on the side wall of one end of the limiting block 35 extending out of the limiting groove 14 away from the heat conduction plate 21.

[0047] Referring to Figure 1 and Figure 2 , one end of the cooling pipe 22 is fixedly connected to the surface of the heat conduction plate 21, and the other end of the cooling pipe 22 extends to a place where it can be blown by the impeller 11. A phase-change coolant is added inside the cooling pipe 22. A circulation component 23 is provided on the cooling pipe 22 and is used to circulate the phase-change coolant.

[0048] Referring to Figure 1 and Figure 2 , the circulation component 23 includes a sintered wall 24 and heat dissipation fins 25. The sintered walls 24 are evenly laid on the inner side wall of the cooling pipe 22. The sintered wall 24 is a powdered sintered wall 24 with tiny cavities. Both ends of the cooling pipe 22 are sealed and in a negative pressure state inside. A plurality of heat dissipation fins 25 are provided, and the plurality of heat dissipation fins 25 are evenly and fixedly installed at one end of the cooling pipe 22 that is blown by the impeller 11.

[0049] Referring to Figure 1 and Figure 2, the phase-change coolant in the cooling pipe 22 is heated and vaporized at one end where the cooling pipe 22 is connected to the heat-conducting plate 21. The vaporized phase-change coolant moves to the windward end of the cooling pipe 22. By installing a plurality of heat dissipation fins 25 at the windward end of the cooling pipe 22, the heat dissipation fins 25 increase the windward area and the heat dissipation area of the cooling pipe 22. The vaporized phase-change coolant cools down and condenses at the windward end of the cooling pipe 22. Since the phase-change coolant is heated and evaporated at one end where the cooling pipe 22 is connected to the heat-conducting plate 21, the sintered wall 24 at one end of the cooling pipe 22 close to the heat-conducting plate 21 is relatively dry, while the sintered wall 24 at the windward end of the cooling pipe 22 is relatively wet due to the condensation of the phase-change coolant. The condensed phase-change coolant flows from the wet end to the dry end on the sintered wall 24 due to capillary action, thus completing the work of the phase-change coolant in the cooling pipe 22 to circulate and dissipate heat from the heat-conducting plate 21.

[0050] The working principle of the embodiment of the present application is as follows:

[0051] The heat-conducting plate 21 conducts the heat generated when the motor 12 works. After the heat generated by the motor 12 working is transferred to the heat-conducting plate 21, the phase-change coolant exchanges heat through the cooling pipe 22 and the heat-conducting plate 21. The phase-change coolant evaporates and absorbs heat, thus absorbing the heat on the heat-conducting plate 21. At the same time, due to the existence of the sintered wall 24 and the heat dissipation fins 25, the vaporized phase-change coolant in the cooling pipe 22 can be condensed and reused, so that the cooling pipe 22 can continuously cool the heat-conducting plate 21, reducing the probability of the motor 12 overheating during continuous operation, increasing the working time of the motor 12, and making the operation of the mixed-flow fan more efficient.

[0052] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A high energy efficiency mixed flow fan, characterized in that: The invention comprises a machine body (1), an impeller (11) and a motor (12), wherein the impeller (11) is rotatably arranged on the machine body (1), the motor (12) is arranged on the machine body (1) and the output shaft is connected to the impeller (11), and a cooling mechanism (2) for cooling the motor (12) is arranged on the machine body (1), and the cooling mechanism (2) comprises: A heat conduction plate (21), the heat conduction plate (21) being arranged on the machine body (1) and pressed against an outer side wall of the motor (12); A cooling pipe (22), wherein the cooling pipe (22) is arranged on the heat conducting plate (21), and a phase-changing cooling liquid is added into the cooling pipe (22); A circulation component (23), wherein the circulation component (23) is arranged on the cooling pipe (22) and is used for circulating the phase-changing cooling liquid.

2. A high energy efficiency mixed flow fan according to claim 1, characterized in that: The motor (12) is located on a side where the impeller (11) blows out air, one end of the cooling pipe (22) is connected to the heat conduction plate (21), and the other end of the cooling pipe (22) extends to a position where the impeller (11) can blow air.

3. A high energy efficiency mixed flow fan according to claim 2, characterized in that: The circulation component (23) comprises: A sintering wall (24), the sintering wall (24) being arranged on the inner wall of a cooling tube (22), the cooling tube (22) being sealed at both ends and having an internal negative pressure state; A heat dissipation fin (25), wherein a plurality of the heat dissipation fins (25) are provided, and the plurality of heat dissipation fins (25) are evenly distributed at the wind receiving end of the cooling pipe (22).

4. The high energy efficiency mixed flow fan according to claim 1, characterized in that: The machine body (1) is provided with a connecting mechanism (3), and the heat conducting plate (21) is detachably connected to the machine body (1) via the connecting mechanism (3), wherein the connecting mechanism (3) comprises: Two connecting rods (31), both of which are arranged on the machine body (1), and the two connecting rods (31) are respectively located on both sides of the motor (12); A connecting frame (32), the connecting frame (32) being arranged on two connecting rods (31), the connecting frame (32) being provided with a connecting groove, and the heat conducting plate (21) being located in the placement groove (13); A limiting component (33), wherein the limiting component (33) is arranged on the connection frame (32) and is used to limit the position of the heat conducting plate (21) in the placement groove (13).

5. A high energy efficiency mixed flow fan according to claim 4, characterized in that: The limiting component (33) comprises: A limit block (35), wherein a horizontal limit groove (14) is provided on the inner side of the placement groove (13), and the limit block (35) is slidably arranged on the connection frame (32) and is located in the limit groove (14); A limit spring (36), the limit spring (36) being arranged on the inner bottom wall of the placement groove (13) and connected to the limit block (35); under the action of the limit spring (36), the limit block (35) partially extends out of the limit groove (14) and contacts the surface of the heat conduction plate (21); the limit block (35) cooperates with the inner bottom wall of the placement groove (13) of the placement frame to clamp the heat conduction plate (21).

6. A high energy efficiency mixed flow fan according to claim 5, characterized in that: An arc-shaped guide surface (37) is provided on a side wall of one end of the limit block (35) extending out of the limit groove (14) away from the heat conduction plate (21).

7. The high energy efficiency mixed flow fan according to claim 4, characterized in that: The connecting frame (32) is slidably mounted on the connecting rod (31) along the axial direction of the connecting rod (31); a thread is provided on a side wall of the connecting rod (31); two nuts (34) are threadedly connected to the connecting rod (31); the two nuts (34) are pressed against two side walls of the connecting frame (32) facing away from each other; and the connecting frame (32) drives the heat conducting plate (21) to press against the motor (12) under the action of the two nuts (34).

8. The high energy efficiency mixed flow fan according to claim 1, characterized in that: The temperature conducting plate (21) is a temperature conducting plate (21) made of red copper, and the surface of the temperature conducting plate (21) is nickel-plated.

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