Magnetic suspension fan with self-suction cooling impeller

Abstract

The invention discloses an impeller self-suction cooling magnetic suspension fan, and relates to the technical field of magnetic suspension fans, the impeller self-suction cooling magnetic suspension fan comprises a machine shell, a volute is fixedly arranged at one end of the machine shell, an impeller is rotatably arranged in the volute, four mounting blocks are fixedly arranged in the machine shell, and two magnetic induction coils are fixedly arranged among the four mounting blocks; a main shaft is rotationally arranged between the two magnetic induction coils, a stator winding is fixedly arranged in the machine shell, and a rotor is arranged in the middle of the main shaft. By arranging the judging ring, the two tension springs, the two balancing weights, the two connecting columns, the conical ring, the pressure spring and the fixing ring, the rotating speed of the impeller is automatically judged, the shape of an air duct can be adaptively adjusted subsequently according to the conditions of high-speed rotation and low-speed continuous operation, and it is guaranteed that the good heat dissipation effect is achieved under different operation conditions.

Description

Technical Field

[0001] This invention relates to the field of magnetic levitation fan technology, specifically a magnetic levitation fan with self-cooling impeller. Background Technology

[0002] A magnetic levitation blower is a mechanical device for conveying gas. It adopts core technologies such as magnetic levitation bearings, three-dimensional flow impellers, high-speed permanent magnet synchronous motors, high-efficiency frequency converter speed regulation, and intelligent monitoring and control. When starting, it first levitates and then rotates, with no friction and no need for lubrication. The three-dimensional flow impeller is directly connected to the rotor, resulting in zero transmission loss.

[0003] Patent CN113217426B discloses a magnetic levitation fan with impeller self-cooling. The fan includes a casing, a shaft, a rear protective bearing housing, a rear bearing housing, a front protective bearing housing, a front bearing housing, and an impeller. The casing has an impeller air inlet at the other end of the shaft, communicating with the outside. The casing, rear bearing housing, and front bearing housing all have axially penetrating external ventilation openings, and the rear and front protective bearing housings each have axially penetrating external ventilation grooves. The rear and front protective bearing housings have internal ventilation openings inside the external ventilation grooves. A radial gap exists between the shaft and the stator of the levitation fan, and the two ends of this gap are axially connected to the bearing axial gaps and then connected to the impeller air inlet and impeller blower end through the internal ventilation openings of the protective bearing housing and the front protective bearing housing. This fan drives both the motor cooling air path and the aerodynamic air path simultaneously by driving one impeller, reducing the number of components and improving system stability.

[0004] The above-mentioned device drives both the motor cooling air path and the pneumatic air path by driving an impeller. However, as the impeller speed changes, the air intake changes accordingly. When the impeller rotates at high speed, the air intake is large, and its air intake diameter needs to be increased. Otherwise, it will lead to greater resistance and increased energy consumption. When the impeller rotates at low speed continuously, the air flow is small and the wind speed is low. Heat accumulates between the magnetic coil and the rotor stator, making it difficult to dissipate heat effectively. Summary of the Invention

[0005] The present invention addresses the problem that existing technical solutions are too simplistic by providing a solution that is significantly different from existing technologies. Specifically, the purpose of the present invention is to provide a magnetic levitation fan with impeller self-cooling to solve the problems mentioned in the background.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a magnetic levitation fan with impeller self-priming cooling, comprising a housing, a volute fixedly disposed at one end of the housing, an impeller rotatably disposed inside the volute, four mounting blocks fixedly disposed inside the housing, two magnetic induction coils fixedly disposed between the four mounting blocks, a main shaft rotatably disposed between the two magnetic induction coils, a stator winding fixedly disposed inside the housing, a rotor disposed in the middle of the main shaft, a judgment mechanism disposed inside the housing, an adjustment mechanism rotatably sleeved on the outer wall of the stator winding, two collars fixedly disposed inside the housing, a sensor fixedly sleeved on the main shaft, the sensor being located between the two collars, two connecting rods fixedly disposed on the side wall of the judgment mechanism, a linkage ring fixedly disposed at one end of the two connecting rods, and a plurality of dustproof mechanisms arranged in a circular array on the side wall of the linkage ring.

[0007] Preferably, the judging mechanism includes a judging ring, two tension springs, two counterweights, two connecting columns, a conical ring, a compression spring, and a fixed ring. The fixed ring is fixedly disposed inside the housing. One end of the compression spring is fixedly disposed on the side wall of the fixed ring. The conical ring is fixedly disposed on the other end of the compression spring. The judging ring is fixedly disposed on the main shaft. The two connecting columns are fixedly disposed on the judging ring. One end of the two tension springs is fixedly disposed on the side wall of the judging ring. The two counterweights are slidably sleeved on the two connecting columns, and the two counterweights are fixedly connected to the other ends of the two tension springs.

[0008] Preferably, both counterweights are provided with inclined surfaces, and the conical ring abuts against the two inclined surfaces.

[0009] Preferably, the adjustment mechanism includes an adjustment rod, a plurality of limiting posts, a plurality of heat-conducting rings, a plurality of through slots, and a plurality of limiting grooves. The adjustment rod is fixedly disposed on the side wall of the conical ring. The plurality of limiting posts are equidistantly arranged at the bottom of the adjustment rod. The plurality of heat-conducting rings are rotatably sleeved on the inner wall of the housing. The plurality of through slots are arranged in a circular equidistant array on the plurality of heat-conducting rings. The plurality of limiting grooves are respectively disposed on the top of the corresponding heat-conducting rings. The plurality of limiting posts slide within the plurality of limiting grooves. An air inlet ring is fixedly disposed at one end of the housing. Three long shafts are fixedly disposed at one end of the air inlet ring. Two of the long shafts are fixedly connected to the heat-conducting ring near the end of the air inlet ring.

[0010] Preferably, the slope between the plurality of heat-conducting grooves increases in a stepwise manner.

[0011] Preferably, each of the aforementioned dustproof mechanisms includes a U-shaped wedge, a contact plate, a plug-in post, a first spring, two connecting rods, a cleaning grid, a storage box, and a dustproof plate. The storage box is fixedly disposed in the through groove on the heat-conducting ring, the plug-in post is inserted into the storage box, the dustproof plate is fixedly disposed on the side wall of the storage box, one end of each of the two connecting rods is fixedly disposed on the side wall of the linkage ring, the U-shaped wedge is fixedly disposed on the other end of the connecting rod, the contact plate is fixedly disposed on the plug-in post, the first spring is fixedly disposed on the contact plate, the U-shaped wedge and the contact plate abut against each other, and the cleaning grid is fixedly disposed at the bottom of the plug-in post.

[0012] Preferably, the storage box is provided with a receiving groove for the cleaning grid to pass through, and the cleaning grid is slidably inserted into the dustproof plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] (1) By setting up a judgment ring, two tension springs, two counterweights, two connecting columns, a conical ring, a compression spring and a fixing ring, the present invention realizes automatic judgment of impeller speed, which facilitates the subsequent adaptive adjustment of the air duct shape according to the situation of high-speed rotation and low-speed continuous operation, so as to ensure good heat dissipation effect at low speed.

[0015] (2) By setting up an adjusting rod, several limiting columns, several heat-conducting rings, several through slots and several limiting slots, the present invention achieves adaptive adjustment of the air duct shape to adapt to most usage scenarios, and reduces wind resistance and energy consumption when operating at high speed, and ensures good heat dissipation effect when operating at low speed continuously, and has a wide range of applications.

[0016] (3) The present invention achieves the following by setting up a U-shaped wedge, abutment plate, plug post, first spring, two connecting rods, cleaning grid, storage box and dustproof plate: when there is a lot of dust in the air volume, the dust is scraped off and the dust is compressed into a cake shape in the storage box. Then, a secondary cleaning is performed at low speed. The compressed dust is placed inside the storage box and the dust cake above the cleaning grid is blown into the storage box by the air flow to ensure the self-cleaning effect, reduce the maintenance frequency and ensure the ventilation volume. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the overall internal cross-sectional structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the judgment mechanism structure of the present invention;

[0020] Figure 4This is a partial exploded cross-sectional view of the adjustment mechanism of the present invention;

[0021] Figure 5 This is a schematic diagram of the internal cross-sectional structure of the dustproof mechanism of the present invention;

[0022] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0023] In the diagram: 1. Housing; 2. Volute; 3. Main shaft; 4. Impeller; 5. Judgment mechanism; 51. Judgment ring; 52. Tension spring; 53. Counterweight; 54. Connecting column; 55. Conical ring; 56. Compression spring; 57. Fixing ring; 6. Adjustment mechanism; 61. Adjustment rod; 62. Limiting column; 63. Heat-conducting ring; 64. Through groove; 65. Limiting groove; 7. Dustproof mechanism; 71. Connecting rod; 72. Linkage ring; 73. U-shaped wedge; 74. Contact plate; 75. Insertion column; 76. First spring; 77. Connecting rod; 78. Cleaning grid; 79. Storage box; 710. Dustproof plate; 8. Magnetic coil; 9. Stator winding; 10. Mounting block; 11. Long shaft; 12. Collar; 13. Sensor; 14. Air inlet ring. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figures 1-6An embodiment of the present invention provides a magnetic levitation fan with impeller self-cooling, comprising a housing 1, a volute 2 fixedly mounted at one end of the housing 1, an impeller 4 rotatably mounted inside the volute 2, four mounting blocks 10 fixedly mounted inside the housing 1, two magnetic induction coils 8 fixedly mounted between the four mounting blocks 10, a main shaft 3 rotatably mounted between the two magnetic induction coils 8, a stator winding 9 fixedly mounted inside the housing 1, a rotor mounted in the middle of the main shaft 3, a judgment mechanism 5 inside the housing 1, an adjustment mechanism 6 rotatably sleeved on the outer wall of the stator winding 9, two collars 12 fixedly mounted inside the housing 1, a sensor 13 fixedly sleeved on the main shaft 3, the sensor 13 being located between the two collars 12, two connecting rods 71 ​​fixedly mounted on the side wall of the judgment mechanism 5, a linkage ring 72 fixedly mounted at one end of the two connecting rods 71, and a plurality of dustproof mechanisms 7 arranged in a circular array on the side wall of the linkage ring 72. When the impeller 4 is rotating at high speed, it drives the judgment mechanism 5 to work. The judgment mechanism 5 drives the adjustment mechanism 6 to move, so that the cooling air duct of the adjustment mechanism 6 changes from the initial spiral groove to a straight groove, reducing wind resistance and energy consumption. At the same time, it drives the dust removal mechanism 7 to perform a dust cleaning. When the impeller 4 is at a low speed or stops rotating, the wind speed and air volume decrease. The judgment mechanism 5 drives the adjustment mechanism 6 to reset, so that the straight groove becomes a spiral groove again, increasing the residence time of the airflow in the spiral groove, increasing wind pressure, increasing wind speed, and ensuring heat dissipation effect. At this time, the dust removal mechanism 7 performs a second dust cleaning and collects the cleaned dust to ensure air intake quality and ventilation and heat dissipation effect.

[0026] Specifically, the judgment mechanism 5 includes a judgment ring 51, two tension springs 52, two counterweights 53, two connecting posts 54, a conical ring 55, a compression spring 56, and a fixed ring 57. The fixed ring 57 is fixedly installed inside the housing 1. One end of the compression spring 56 is fixedly installed on the side wall of the fixed ring 57, and the conical ring 55 is fixedly installed on the other end of the compression spring 56. The judgment ring 51 is fixedly installed on the main shaft 3. The two connecting posts 54 are fixedly installed on the judgment ring 51. One end of the two tension springs 52 is fixedly installed on the side wall of the judgment ring 51. The two counterweights 53 are slidably sleeved on the two connecting posts 54, and the two counterweights 53 are fixedly connected to the other ends of the two tension springs 52. The rotation of the main shaft 3 drives the judgment ring 51 to rotate, which in turn drives the counterweight 53 and the connecting column 54 to rotate. When rotating at high speed, the counterweight 53 moves in the opposite direction to the center of the judgment ring 51 due to centrifugal force, thereby resisting the conical ring 55 and moving towards the impeller 4. This achieves automatic judgment of the impeller 4 speed, which facilitates the adaptive adjustment of the air duct shape according to the conditions of high-speed rotation and low-speed continuous operation, so as to ensure good heat dissipation effect in different usage scenarios.

[0027] Specifically, both counterweights 53 are provided with inclined surfaces, and the conical ring 55 abuts against the two inclined surfaces.

[0028] Specifically, the adjustment mechanism 6 includes an adjustment rod 61, a plurality of limiting posts 62, a plurality of heat-conducting rings 63, a plurality of through grooves 64, and a plurality of limiting slots 65. The adjustment rod 61 is fixedly mounted on the side wall of the conical ring 55. The plurality of limiting posts 62 are equidistantly arrayed and fixedly mounted on the bottom of the adjustment rod 61. The plurality of heat-conducting rings 63 are rotatably sleeved on the inner wall of the housing 1. The plurality of through grooves 64 are arranged in a circular equidistant array on the plurality of heat-conducting rings 63. The plurality of limiting slots 65 are respectively located on the top of the corresponding heat-conducting rings 63. The plurality of limiting posts 62 slide within the plurality of limiting slots 65. An air inlet ring 14 is fixedly mounted at one end of the housing 1. Three long shafts 11 are fixedly mounted at one end of the air inlet ring 14. Two of the long shafts 11 are fixedly connected to the heat-conducting rings 63 near the end of the air inlet ring 14. The movement of the conical ring 55 drives the adjustment rod 61 to move, which in turn drives the limiting post 62 to move. The limiting post 62 slides within the limiting groove 65, causing the heat-conducting ring 63 to rotate. The rotation of the heat-conducting ring 63 aligns the corresponding through groove 64, thus enabling the air duct to switch to a straight shape at high speeds to reduce resistance and energy consumption. At low speeds, it automatically transforms into a spiral air duct, with the through groove 64 slightly offset to reduce its diameter, thereby increasing air pressure and air residence time. This ensures good heat dissipation even with low air volume. The system achieves adaptive adjustment of the air duct shape to suit most application scenarios, reducing air resistance and energy consumption at high speeds and ensuring good heat dissipation during continuous low-speed operation, making it widely applicable.

[0029] Specifically, the slope between the heat-conducting grooves increases in a stepwise manner.

[0030] Specifically, each of the aforementioned dustproof mechanisms 7 includes a U-shaped wedge 73, a contact plate 74, a plug-in post 75, a first spring 76, two connecting rods 77, a cleaning grid 78, a storage box 79, and a dustproof plate 710. The storage box 79 is fixedly installed at the through groove 64 on the heat-conducting ring 63. The plug-in post 75 is plugged into the storage box 79. The dustproof plate 710 is fixedly installed on the side wall of the storage box 79. One end of each of the two connecting rods 77 is fixedly installed on the side wall of the linkage ring 72. The U-shaped wedge 73 is fixedly installed on the other end of the connecting rod 77. The contact plate 74 is fixedly installed on the plug-in post 75. The first spring 76 is fixedly installed on the contact plate 74. The U-shaped wedge 73 abuts against the contact plate 74. The cleaning grid 78 is fixedly installed at the bottom of the plug-in post 75. The movement of the conical ring 55 drives the connecting rod 71 to move, which in turn drives the linkage ring 72 to move. The linkage ring 72 then drives the connecting rod 77 to move, and the U-shaped wedge 73 to move. The movement of the U-shaped wedge 73 causes the contact plate 74 to move upward, which in turn causes the insertion post 75 to move, and the cleaning grid 78 to move upward. The upward movement of the cleaning grid 78 cleans the dust on the dustproof plate 710. At low speeds or when stopped, the above steps are reversed to reset the cleaning grid 78. The dust scraped off by the cleaning grid 78 is pushed into the storage box 79. This achieves the effect of scraping off a large amount of dust at high airflow rates, while simultaneously compressing the dust into a cake shape with the storage box 79. This allows for secondary cleaning at low speeds, and the compressed dust is placed inside the storage box 79. The airflow blows the dust cake above the cleaning grid 78 into the storage box 79 to ensure self-cleaning, reduce maintenance frequency, and ensure ventilation.

[0031] Specifically, the storage box 79 is provided with a receiving groove for the cleaning grid 78 to pass through, and the cleaning grid 78 is slidably inserted into the dustproof plate 710.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A magnetic suspension fan with impeller self-suction cooling, comprising a casing, a volute is fixedly arranged at one end of the casing, and an impeller is rotatably arranged inside the volute, characterized in that: Four mounting blocks are fixedly arranged in the shell, two magnetic induction coils are fixedly arranged between the four mounting blocks, a main shaft is rotatably arranged between the two magnetic induction coils, a stator winding is fixedly arranged in the shell, a rotor is arranged in the middle of the main shaft, a judging mechanism is arranged in the shell, an adjusting mechanism is rotatably arranged on the outer wall of the stator winding, two sleeve rings are fixedly arranged in the shell, a sensor is fixedly arranged on the main shaft, the sensor is located between the two sleeve rings, two connecting rods are fixedly arranged on the side wall of the judging mechanism, a linkage ring is fixedly arranged at one end of the two connecting rods, and a plurality of dustproof mechanisms are circularly arranged on the side wall of the linkage ring.

2. A magnetic levitation fan with impeller self-sucking cooling according to claim 1, characterized in that: The judging mechanism comprises a judging ring, two tension springs, two counterweights, two connecting columns, a tapered ring, a compression spring and a fixing ring, the fixing ring is fixedly arranged in the shell, one end of the compression spring is fixedly arranged on the side wall of the fixing ring, the tapered ring is fixedly arranged at the other end of the compression spring, the judging ring is fixedly arranged on the main shaft, the two connecting columns are fixedly arranged on the judging ring, one end of the two tension springs is fixedly arranged on the side wall of the judging ring, and the two counterweights are slidably sleeved on the two connecting columns, respectively, and the two counterweights are fixedly connected with the other ends of the two tension springs, respectively.

3. A magnetic levitation fan with impeller self-sucking cooling according to claim 2, characterized in that: The two counterweights are provided with inclined surfaces, and the tapered ring is in abutting fit with the two inclined surfaces.

4. A magnetic levitation fan with self-priming and self-cooling impeller according to claim 2, characterized in that: The adjusting mechanism comprises an adjusting rod, a plurality of limiting columns, a plurality of heat conducting rings, a plurality of through grooves and a plurality of limiting grooves, the adjusting rod is fixedly arranged on the side wall of the tapered ring, the plurality of limiting columns are equidistantly arranged on the bottom of the adjusting rod, the plurality of heat conducting rings are limitingly rotatably sleeved on the inner wall of the shell, the plurality of through grooves are circularly and equidistantly arranged on the plurality of heat conducting rings, the plurality of limiting grooves are respectively arranged on the top of the corresponding heat conducting rings, and the plurality of limiting columns are slidably located in the plurality of limiting grooves, respectively.

5. A magnetic levitation fan with self-priming and self-cooling impeller according to claim 4, characterized in that: The inclination between the plurality of heat conducting grooves is ladder-like and increases gradually.

6. A magnetic levitation fan with self-priming and self-cooling impeller according to claim 1, characterized in that: The plurality of dustproof mechanisms each comprise a U-shaped wedge, an abutting plate, a plug-in column, a first spring, two connecting rods, a cleaning grid, a storage box and a dustproof plate, the storage box is fixedly arranged at the through groove on the heat conducting ring, the plug-in column is plug-in arranged on the storage box, the dustproof plate is fixedly arranged on the side wall of the storage box, one end of the two connecting rods is fixedly arranged on the side wall of the linkage ring, the U-shaped wedge is fixedly arranged at the other end of the connecting rod, the abutting plate is fixedly arranged on the plug-in column, the first spring is fixedly arranged on the abutting plate, the U-shaped wedge is in abutting fit with the abutting plate, and the cleaning grid is fixedly arranged on the bottom of the plug-in column.

7. A magnetic levitation fan with self-priming and self-cooling impeller according to claim 6, characterized in that: The storage box is provided with an accommodating groove for the cleaning grid to pass through, and the cleaning grid is in sliding plug-in fit with the dustproof plate.

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