A self-cooling motor structure for high-temperature fans

Abstract

The present application discloses a self-cooling motor structure for a high-temperature fan, which relates to the field of high-temperature fans, and includes a rotating shaft, the rotating shaft includes an output end, a wind passage is provided in the rotating shaft, a centrifugal disc is fixed on the side of the rotating shaft close to the output end, a centrifugal passage is provided on the centrifugal disc, the centrifugal passage extends from the middle of the centrifugal disc to the edge of the centrifugal disc and passes through the edge of the centrifugal disc, and the centrifugal passage is connected to the wind passage, and an air inlet is provided on the rotating shaft, and the air inlet is connected to the wind passage. The present application has the effect of reducing the conduction of heat from one side of the centrifugal impeller to the motor, helping to reduce the temperature of the motor when it is running, and helping to extend the service life of the motor.

Description

Technical Field

[0001] The present application relates to the field of high-temperature fans, and in particular to a self-cooling motor structure for high-temperature fans. Background Art

[0002] High temperature blower is a kind of equipment specially designed for conveying high temperature gas. It is widely used in industries such as automobile painting, solid waste gas treatment, new materials and new energy, especially in occasions where equipment such as ovens, dryers and industrial furnaces are required to convey high temperature gas. High temperature blower plays an important role in these industries with its characteristics of high temperature resistance, high efficiency, safety and reliability. It can effectively convey high temperature gas to the target equipment, ensure the efficient process of painting, drying, curing, etc., and improve production efficiency and quality.

[0003] The patent application document with the existing announcement number CN113153776A discloses a high-temperature fan based on a heat insulation mechanism, including a motor and an impeller device, a motor main shaft is provided on the motor, a driven shaft is provided on the impeller device, the motor main shaft and the driven shaft are transmission-connected, and a heat insulation device is provided between the motor main shaft and the driven shaft. The heat insulation device includes a connecting seat, the two ends of the connecting seat are respectively fixedly connected to the motor main shaft and the driven shaft, and the connection between the connecting seat and the motor main shaft and the driven shaft is provided with a first heat insulation member, and the first heat insulation member is a heat insulation rubber member. The heat insulation rubber member blocks the heat conduction between the driven shaft and the motor main shaft, reduces the heat conduction from the impeller device to the motor main shaft and the motor, and reduces the temperature of the motor when the fan is working.

[0004] However, as the high-temperature fan works for a long time, heat will accumulate on the driven shaft and the thermal insulation rubber parts and will be difficult to dissipate. A large amount of heat will still be conducted to the motor, causing the motor to run at a higher temperature and shortening its service life. There is room for improvement. Utility Model Content

[0005] In order to improve the problem in the related art that the heat conduction between the driven shaft and the motor main shaft is blocked by the insulating rubber parts, and a large amount of heat is still conducted to the motor, which will cause the operating temperature of the motor to be higher and shorten the service life of the motor, the present application provides a self-cooling motor structure for a high-temperature fan.

[0006] The present application provides a self-cooling motor structure for a high-temperature fan, which adopts the following technical solution:

[0007] A self-cooling motor structure for a high-temperature fan comprises a rotating shaft, the rotating shaft comprises an output end, a wind passage is arranged in the rotating shaft, a centrifugal disk is fixed on the side of the rotating shaft close to the output end, a centrifugal channel is arranged on the centrifugal disk, the centrifugal channel extends from the middle of the centrifugal disk to the edge of the centrifugal disk and passes through the edge of the centrifugal disk, and the centrifugal channel is connected with the wind passage, and an air inlet hole is also arranged on the rotating shaft, and the air inlet hole is connected with the wind passage.

[0008] By adopting the above technical solution, in actual use, the output end of the rotating shaft is connected to the centrifugal impeller of the high-temperature fan. When the high-temperature fan is running, under the centrifugal flow of the centrifugal channel on the centrifugal disk, the outside air will be drawn into the wind channel through the air inlet hole and thrown out through the centrifugal channel; in this process, the air passing through the wind channel can cool the rotating shaft and reduce the temperature of the rotating shaft. In this way, the heat conduction from the centrifugal impeller to the motor is reduced, which helps to reduce the temperature of the motor when it is running and helps to extend the service life of the motor.

[0009] Preferably, it further comprises a rotor, the rotor comprises the rotating shaft, and the air inlet is located at an end of the rotating shaft away from the output end.

[0010] By adopting the above technical solution, in actual use, the airflow through the wind channel can cool the motor from the inside of the motor, which helps to reduce the temperature of the motor when it is running and helps to extend the service life of the motor.

[0011] Preferably, it also includes a heat dissipation impeller, which is fixed to an end of the rotating shaft away from the output end.

[0012] By adopting the above technical solution, when the motor is running, the shaft rotates and the heat dissipation impeller rotates synchronously. On the one hand, the heat dissipation impeller will drive the airflow to cool the motor and dissipate the heat of the motor. On the other hand, the heat dissipation impeller will pull the airflow and enable the airflow to enter the air inlet and the wind channel more quickly, thereby helping to improve the heat dissipation effect of the shaft.

[0013] Preferably, it further comprises a shell, wherein the rotating shaft is located on the side of the centrifugal disc away from the output end and is rotatably mounted in the shell, and a cover is provided on the side of the shell away from the centrifugal disc, wherein the cover covers the heat dissipation impeller and the air inlet, and the cover adopts a hollow structure.

[0014] By adopting the above technical solution, the heat dissipation impeller and the air inlet hole are covered by a cover with a hollow structure, thereby ensuring normal air supply and reducing the occurrence of debris entering the air inlet hole.

[0015] Preferably, an air guide is fixedly provided on the outer side of the centrifugal disk.

[0016] By adopting the above technical solution, when the rotating shaft and the centrifugal disk rotate, the air guide member will be able to quickly pull the air thrown out through the centrifugal channel, so that negative pressure is generated at the outlet of the centrifugal channel, thereby accelerating the flow rate of air through the wind channel and the centrifugal channel, and further improving the heat dissipation effect of the rotating shaft.

[0017] Preferably, a plurality of the centrifugal channels are evenly spaced around the axis of the centrifugal disk, one air guide is provided between any two adjacent centrifugal channels, and all the air guides are evenly spaced around the axis of the centrifugal disk on the centrifugal disk.

[0018] By adopting the above technical solution, the centrifugal channels and the air guides are evenly spaced around the axis of the centrifugal disk, which helps to ensure the uniformity of air being thrown out through the centrifugal disk and helps to ensure the stability of the rotation of the shaft.

[0019] Preferably, the air guide member is arc-shaped, and the arc-shaped direction of the air guide member extends from the centrifugal disk to a side away from the centrifugal disk.

[0020] By adopting the above technical solution, it is helpful to improve the traction effect of the air guide on the air, increase the air flow rate, and help improve the heat dissipation effect of the rotating shaft.

[0021] Preferably, a windshield plate is fixed to a side of the centrifugal plate that is away from the output end of the rotating shaft.

[0022] By adopting the above technical solution, the wind shield plate blocks the airflow from moving toward the centrifugal impeller side of the high-temperature fan, reducing the turbulence of the airflow around the centrifugal plate, which helps to ensure the smooth flow of air from the centrifugal channel.

[0023] Preferably, the centrifugal disc is coaxial with the rotating shaft, the rotating shaft passes through the centrifugal disc, the centrifugal disc includes two centrifugal half discs, the windshield disc includes two windshield half discs, the two centrifugal half discs correspond to the two windshield half discs respectively, and each centrifugal half disc is fixedly connected to the corresponding windshield half disc;

[0024] A locking component is connected between the two windshield half discs, and the two centrifugal half discs clamp the rotating shaft.

[0025] By adopting the above technical solution, the installation of the centrifugal disc and the wind shield disc on the rotating shaft is facilitated.

[0026] It is worth mentioning that in order to connect the wind channel and the centrifugal channel, it is necessary to open a connecting hole at the position of the rotating shaft corresponding to the centrifugal channel. At this time, the rotating shaft is clamped by two centrifugal half-disks at the connecting hole, and the wind channel and the centrifugal channel are normally connected, and the strength of the rotating shaft at the connecting hole can be guaranteed.

[0027] Preferably, a tightening bolt is penetrated from the outside to the inside of the centrifugal disk, the tightening bolt is threadedly connected to the centrifugal disk, and the tightening bolt is pressed against the rotating shaft.

[0028] By adopting the above technical solution, the rotating shaft is tightened by the tightening bolts, which helps to improve the stability of the centrifugal disk on the rotating shaft.

[0029] Preferably, it further comprises a mounting frame, the motor is mounted on the mounting frame, an intermediate body is arranged on the side of the output end of the rotating shaft away from the centrifugal disc, the position of the intermediate body opposite to the centrifugal disc is inwardly recessed to form a heat insulation groove, and the centrifugal disc is located in the heat insulation groove;

[0030] The intermediate body is filled with a heat insulator.

[0031] By adopting the above technical solution, in actual use, the centrifugal impeller of the high-temperature fan is installed on the side of the mounting frame away from the motor, and an insulation groove is arranged on the side of the intermediate body opposite to the centrifugal disk. The air driven by the centrifugal disk will be able to cool the space in the insulation groove, thereby reducing the conduction of heat from the centrifugal impeller side to the motor.

[0032] At the same time, placing the centrifugal disc in the heat-insulating tank can protect the centrifugal disc and reduce the occurrence of damage to the centrifugal disc caused by contact.

[0033] In addition, the intermediate body and the heat insulator can further prevent the heat from being transferred to the motor.

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

[0035] 1. The air is centrifuged and thrown out through the centrifugal channel on the centrifugal disk, and the outside air is sucked through the air inlet holes and air channels on the rotating shaft. The rotating shaft is cooled by the flowing air, thereby reducing the heat conduction from the centrifugal impeller to the motor, which helps to reduce the temperature of the motor during operation and help to extend the service life of the motor;

[0036] 2. By arranging the air inlet at the end of the rotating shaft away from the output end, and arranging a heat dissipation impeller at the end of the rotating shaft away from the output end, the air flow can enter the air inlet and the wind channel more quickly, thereby helping to improve the heat dissipation effect of the rotating shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a cross-sectional view mainly showing the overall structure of the high-temperature fan in this embodiment;

[0038] Figure 2 This is a schematic diagram mainly showing the structure of the motor in this embodiment;

[0039] Figure 3 This is a schematic diagram mainly showing the structure of the centrifugal disk and the wind shielding disk in this embodiment;

[0040] Figure 4 This is an axonometric diagram mainly showing the structure of the centrifugal disk and the wind shield disk of this embodiment.

[0041] Figure numerals: 1. mounting frame; 2. motor; 21. housing; 22. rotor; 221. rotating shaft; 2211. wind passage; 2212. air inlet hole; 2213. connecting hole; 222. iron core; 23. cooling impeller; 24. cover; 3. centrifugal disk; 31. centrifugal passage; 32. centrifugal half disk; 33. tightening bolt 4. wind shield disk; 41. wind shield half disk; 5. locking component; 51. locking bolt; 6. wind guide; 61. plate; 7. intermediate body; 71. heat insulator; 72. avoidance hole; 73. heat insulation groove. DETAILED DESCRIPTION

[0042] The present application is further described in detail below in conjunction with the accompanying drawings.

[0043] The embodiment of the present application discloses a self-cooling motor structure for a high-temperature fan.

[0044] Reference Figure 1 and Figure 2 The self-cooling motor structure for a high-temperature fan includes a mounting frame 1 and a motor 2. The motor 2 includes a housing 21 and a rotor 22. The rotor 22 includes a rotating shaft 221 and an iron core 222 fixed to the rotating shaft 221. The rotating shaft 221 passes through the housing 21 and is rotatably connected to the housing 21 through a bearing. The iron core 222 is located in the housing 21. One end of the rotating shaft 221 is the output end, and the output end of the rotating shaft 221 passes out to the outside of the housing 21. An air passage 2211 is provided in the rotating shaft 221 along its axis. A centrifugal disk 3 is provided on one side of the rotating shaft 221 close to the output end. The rotating shaft 221 passes through the centrifugal disk 3 and is fixedly connected to the centrifugal disk 3. A centrifugal channel 31 is provided on the centrifugal disk 3 (see Figure 3 ), the centrifugal channel 31 extends from the middle of the centrifugal disk 3 to the edge of the centrifugal disk 3 and penetrates the edge of the centrifugal disk 3, and the centrifugal channel 31 is connected with the wind channel 2211. The rotating shaft 221 is also provided with an air inlet hole 2212, and the air inlet hole 2212 is connected with the wind channel 2211. In actual use, when the motor 2 is running, the centrifugal disk 3 will rotate together with the rotating shaft 221; under the centrifugal and guiding of the centrifugal channel 31 on the centrifugal disk 3, the outside air will be drawn into the wind channel 2211 through the air inlet hole 2212, and thrown out through the centrifugal channel 31; in this process, the air passing through the wind channel 2211 can cool the rotating shaft 221 and reduce the temperature of the rotating shaft 221.

[0045] Specifically, see Figure 1 and Figure 2, one end of the rotating shaft 221 away from the output end passes through the side of the housing 21 away from the output end of the rotating shaft 221. The air passage 2211 is arranged along the axis of the rotating shaft 221, and the air inlet 2212 is located at the end of the rotating shaft 221 away from the output end. The motor 2 also includes a heat dissipation impeller 23, and the heat dissipation impeller 23 is fixed to the end of the rotating shaft 221 away from the output end. A cover 24 is fixed to the side of the housing 21 away from the centrifugal disc 3, and the cover 24 covers the heat dissipation impeller 23 and the air inlet 2212, and the cover 24 adopts a hollow structure. When the motor 2 is running, the heat dissipation impeller 23 rotates synchronously and sucks outside air through the hollow part of the cover 24, so that the air can enter the air inlet 2212 relatively quickly.

[0046] See also Figure 2 and Figure 3 , the rotating shaft 221 is provided with a connecting hole 2213 radially along the rotating shaft 221 near its output end, the connecting hole 2213 connects the wind channel 2211 and the outer side of the rotating shaft 221, and the centrifugal channel 31 is connected with the wind channel 2211 through the connecting hole 2213. A plurality of centrifugal channels 31 are evenly spaced around the axis of the centrifugal disk 3 on the centrifugal disk 3, and the connecting holes 2213 correspond to the centrifugal channels 31 one by one. In this embodiment, the number of the centrifugal channels 31 and the connecting holes 2213 are both four. A windshield plate 4 is coaxially arranged on one side of the centrifugal disk 3 away from the output end of the rotating shaft 221, and the rotating shaft 221 passes through the windshield plate 4. The centrifugal disk 3 includes two centrifugal half disks 32, and the windshield plate 4 includes two windshield half disks 41. The two centrifugal half disks 32 correspond to the two windshield half disks 41 respectively, and each centrifugal half disk 32 is integrally connected with the corresponding windshield half disk 41. A locking component 5 is connected between the two windshield half-disks 41 , and the two centrifugal half-disks 32 clamp the rotating shaft 221 .

[0047] It should be noted that the centrifugal disk 3 and the windshield disk 4 can also receive the heat conducted by the rotating shaft 221 and dissipate the heat to the fast-flowing air. In addition, holes can also be opened on the edge of the windshield disk 4 to increase the heat dissipation area of ​​the windshield disk 4.

[0048] See also Figure 3 and Figure 4, an air guide 6 is arranged on the outer side of the centrifugal disc 3, the air guide 6 is in a strip shape, the air guide 6 extends from the edge of the centrifugal disc 3 to the side away from the centrifugal disc 3, and the air guide 6 is fixed on the wind shielding disc 4. One air guide 6 is arranged between any two adjacent centrifugal channels 31, and all the air guides 6 are evenly spaced around the axis of the centrifugal disc 3 on the centrifugal disc 3. In this embodiment, two centrifugal channels 31 are distributed on each centrifugal half disc 32, and one air guide 6 is distributed in the middle of each wind shielding half disc 41. In addition, the other two air guides 6 are located at the connection of the two wind shielding half discs 41, and in the two air guides 6, each air guide 6 includes two plates 61, and the two plates 61 of each air guide 6 are respectively fixed on the two centrifugal half discs 32. The locking component 5 includes a locking bolt 51, and the locking bolt 51 passes through a plate 61 and is screwed into another corresponding plate 61, thereby fixing the two centrifugal half discs 32. In order to improve the stability of the connection between the centrifugal disk 3 and the rotating shaft 221, a tightening bolt 33 is penetrated from the outside to the inside of the centrifugal disk 3, and the tightening bolt 33 is threadedly connected to the centrifugal disk 3, and the tightening bolt 33 is pressed against the rotating shaft 221. In other embodiments, the centrifugal channel 31 and the air guide 6 can both be arc-shaped to improve the centrifugal effect on the air.

[0049] In addition, see Figure 1 and Figure 3 , an intermediate body 7 is provided on the side of the output end of the rotating shaft 221 away from the centrifugal disc 3, and the intermediate body 7 is fixed on the mounting frame 1. The intermediate body 7 is a heat-insulating shell, and the intermediate body 7 is filled with a heat-insulating body 71, and the intermediate body 7 is provided with an avoidance hole 72 at a position corresponding to the output end of the rotating shaft 221. In this embodiment, the heat-insulating body 71 can be made of glass wool or rock wool. At the same time, the intermediate body 7 is recessed inwardly at a position opposite to the centrifugal disc 3 to form a heat-insulating groove 73, and the centrifugal disc 3, the windshield disc 4 and the avoidance hole 72 are all located in the heat-insulating groove 73.

[0050] The implementation principle of a self-cooling motor structure for a high-temperature fan in an embodiment of the present application is as follows: in actual use, when the motor 2 is running, the centrifugal disk 3 and the heat dissipation impeller 23 will rotate together with the rotating shaft 221; then, the heat dissipation impeller 23 can draw in external air through the hollow part of the cover 24, so that the air can enter the air inlet 2212 relatively quickly; at the same time, under the action of centrifugal force, the air in the centrifugal channel 31 will be thrown out, and move outward quickly under the action of the air guide 6, and will generate a strong suction force on the wind channel 2211, thereby increasing the flow rate of air in the wind channel 2211 and improving the heat dissipation effect on the rotating shaft 221.

[0051] In addition, the wind shield plate 4 can block the airflow from moving toward the bottom wall of the heat insulation groove 73 and allow the airflow to move more smoothly toward the outside of the heat insulation groove 73, thereby reducing the occurrence of airflow turbulence in the heat insulation groove 73.

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

Claims

1. A self-cooling motor structure for a high-temperature fan, comprising a rotating shaft (221), wherein the rotating shaft (221) comprises an output end, and is characterized in that: A wind passage (2211) is provided in the rotating shaft (221); a centrifugal disc (3) is fixed to a side of the rotating shaft (221) close to the output end; a centrifugal passage (31) is provided on the centrifugal disc (3); the centrifugal passage (31) extends from the middle of the centrifugal disc (3) to the edge of the centrifugal disc (3) and penetrates the edge of the centrifugal disc (3); the centrifugal passage (31) is in communication with the wind passage (2211); an air inlet hole (2212) is also provided on the rotating shaft (221); the air inlet hole (2212) is in communication with the wind passage (2211).

2. A self-cooling motor structure for a high-temperature fan according to claim 1, characterized in that: It also comprises a rotor (22), wherein the rotor (22) comprises the rotating shaft (221), and the air inlet hole (2212) is located at an end of the rotating shaft (221) away from the output end.

3. A self-cooling motor structure for a high temperature fan according to claim 2, characterized in that: It also includes a heat dissipation impeller (23), wherein the heat dissipation impeller (23) is fixed to an end of the rotating shaft (221) away from the output end.

4. The self-cooling motor structure for a high-temperature fan according to claim 3 is characterized in that: It also comprises a housing (21), the rotating shaft (221) being located on a side of the centrifugal disc (3) away from the output end and being rotatably mounted in the housing (21), a cover (24) being provided on a side of the housing (21) away from the centrifugal disc (3), the cover (24) covering the heat dissipation impeller (23) and the air inlet hole (2212), and the cover (24) having a hollow structure.

5. The self-cooling motor structure for a high-temperature fan according to claim 1 is characterized in that: An air guide member (6) is fixedly arranged on the outer side of the centrifugal disc (3).

6. A self-cooling motor structure for a high-temperature fan according to claim 5, characterized in that: A plurality of the centrifugal channels (31) are evenly spaced around the axis of the centrifugal disk (3), one air guide member (6) is provided between any two adjacent centrifugal channels (31), and all the air guide members (6) are evenly spaced on the centrifugal disk (3) around the axis of the centrifugal disk (3).

7. The self-cooling motor structure for a high-temperature fan according to claim 5, characterized in that: The air guide member (6) is arc-shaped, and the arc-shaped direction of the air guide member (6) extends from the position of the centrifugal disk (3) to a side away from the centrifugal disk (3).

8. The self-cooling motor structure for a high-temperature fan according to claim 5, characterized in that: A windshield plate (4) is fixed to one side of the output end of the centrifugal plate (3) facing away from the rotating shaft (221).

9. A self-cooling motor structure for a high-temperature fan according to claim 8, characterized in that: The centrifugal disc (3) is coaxial with the rotating shaft (221), the rotating shaft (221) passes through the centrifugal disc (3), the centrifugal disc (3) comprises two centrifugal half discs (32), the windshield disc (4) comprises two windshield half discs (41), the two centrifugal half discs (32) respectively correspond to the two windshield half discs (41), and each centrifugal half disc (32) is fixedly connected to the corresponding windshield half disc (41); A locking component (5) is connected between the two windshield half-disks (41), and the two centrifugal half-disks (32) clamp the rotating shaft (221).

10. The self-cooling motor structure for a high-temperature fan according to claim 1, characterized in that: It also comprises a mounting frame (1), the motor (2) being mounted on the mounting frame (1), an intermediate body (7) being arranged on a side of the output end of the rotating shaft (221) facing away from the centrifugal disc (3), the intermediate body (7) being recessed inwardly at a position opposite to the centrifugal disc (3) to form a heat insulation groove (73), and the centrifugal disc (3) being located in the heat insulation groove (73); The intermediate body (7) is filled with a heat insulator (71).

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