A permanent magnet speed regulator with a detachable heat dissipation structure

Abstract

The present invention relates to a permanent magnet speed regulator with a detachable heat dissipation structure, comprising a metal housing connected to a permanent magnet speed regulator, a heat dissipation mechanism disposed within the metal housing for air-cooling the permanent magnet speed regulator, a water pump disposed on one side of the metal housing, the water pump connected to a pipeline, and a wet curtain disposed within the metal housing for cooperating with the pipeline to generate water vapor for cooling air entering the metal housing. The blades are arranged in an inverse parabolic pattern and are evenly spaced. The blades are installed at a positive angle of attack relative to the corresponding crossflow fan diameter, enabling single-channel airflow and heat dissipation in conjunction with a baffle.

Description

Technical Field

[0001] The invention relates to the technical field of permanent magnet speed regulators, in particular to a permanent magnet speed regulator with a detachable heat dissipation structure. Background Art

[0002] The core component of a permanent magnet speed controller is the permanent magnet material. During the speed regulation process, the controller generates a large amount of heat, causing the internal temperature to rise. When the operating temperature exceeds the Curie temperature, the magnet will demagnetize, significantly reducing operating efficiency. Therefore, heat dissipation is crucial to the normal operation of the permanent magnet speed controller.

[0003] Chinese invention patent number CN108880101A discloses a heat dissipation structure for a permanent magnet speed regulator. This structure incorporates the concept of centrifugal heat dissipation in air-cooled permanent magnet speed regulators, further optimizing their design. The single-channel design ensures a unique and stable air duct, while the presence of a radial impeller also increases internal cooling airflow.

[0004] Although this patent can achieve heat dissipation by forming two ventilation ducts, it requires the cooperation of two sets of axial and radial blades to achieve heat dissipation. The structure is relatively complex, and the gap between the heat dissipation impeller and the conductor rotor and permanent magnet rotor is small. Dust in the air accumulates in the gap, which is difficult to clean. It also increases the friction between the rotors, generates additional heat, and thus reduces the working efficiency. During the use of high-power permanent magnet speed regulators, it still cannot meet the heat dissipation requirements. Therefore, it is particularly important to invent a permanent magnet speed regulator with a detachable heat dissipation structure that can meet the requirements of high heat dissipation efficiency, simple structure, easy installation, and adaptability to different environments. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention proposes a permanent magnet speed regulator with a detachable heat dissipation structure. The technical problem to be solved by the present invention is achieved by the following technical solutions:

[0006] A permanent magnet speed regulator with a detachable heat dissipation structure comprises a metal shell, the metal shell is connected to the permanent magnet speed regulator, and a heat dissipation mechanism for air cooling the permanent magnet speed regulator is provided in the metal shell;

[0007] A water pump is provided on one side of the metal shell, the water pump is connected to a pipeline, and a wet curtain is provided in the metal shell for cooperating with the pipeline to generate water vapor for cooling the air entering the metal shell.

[0008] The heat dissipation mechanism includes a cross-flow fan, which is provided with a plurality of blades distributed around the circumference of the cross-flow fan. A rotating mechanism connected to the cross-flow fan to drive the cross-flow fan 31 to rotate is provided in the metal housing.

[0009] The blades are arranged in an inverse parabola shape and are distributed at equal intervals.

[0010] The installation angles of the blades are all positive angles of attack with respect to the corresponding cross-flow fan diameter.

[0011] The rotating mechanism includes an inner rotor coaxially distributed with the crossflow fan, an outer rotor nested and connected to the crossflow fan to drive the crossflow fan to rotate, and a disassembly mechanism is provided between the outer rotor and the crossflow fan to facilitate the disassembly and assembly of the crossflow fan.

[0012] The disassembly mechanism includes four sleeves fixed on the outer rotor and distributed around the circumference of the outer rotor. The crossflow blower is provided with a knock pin extending into the sleeve. The end of the knock pin is provided with a clamping portion with a diameter larger than the knock pin for engaging with the sleeve. A snap ring is mounted on the knock pin. The sleeve is provided with a limiting mechanism that engages with the clamping portion and the snap ring to lock the outer rotor and the crossflow blower.

[0013] The limiting mechanism includes a wedge distributed between the engaging portion and the clamping ring and slidably mounted on the sleeve. The wedge is connected to a push rod slidably mounted on the sleeve. A reset spring is provided between the push rod and the sleeve.

[0014] An upper baffle and a lower baffle are arranged in the metal shell and are symmetrically distributed along the vertical direction to form a one-way perfusion air duct.

[0015] The curvature of the upper baffle is 50 degrees to 70 degrees, and the curvature of the lower baffle is 110 degrees to 135 degrees.

[0016] Ventilation nets are provided on both the left and right sides of the metal shell, and the wet curtain faces the ventilation net on one side.

[0017] The beneficial effects of the present invention are as follows: 1. The blades are arranged in an inverse parabolic shape and are distributed at equal intervals. At the same time, the installation angles of the blades are all at a positive angle of attack with the corresponding crossflow fan diameter. With the cooperation of the baffle, a single-channel airflow inlet and outlet heat dissipation method can be achieved;

[0018] 2. When the air passes through the wet curtain, it generates a large amount of water vapor to take away the heat, forming a double cooling effect of air cooling and water cooling;

[0019] 3. The disassembly mechanism can realize the rapid disassembly of the cross flow fan and the outer rotor, which is convenient for cleaning the cross flow fan and preventing dust accumulation from affecting the heat dissipation efficiency of the permanent magnet speed regulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and examples.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a front view structural schematic diagram of the present invention;

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the heat dissipation mechanism of the present invention;

[0024] Figure 4 Schematic diagram of the three-dimensional structure of the outer rotor of the present invention;

[0025] Figure 5 This is a schematic diagram of the top view of the heat dissipation mechanism of the present invention;

[0026] Figure 6 For the present invention Figure 5 Magnified view of center I;

[0027] Figure 7 For the present invention Figure 5 Magnified view of middle II.

[0028] As shown in the figure: 1. Metal casing; 2. Permanent magnet speed regulator; 3. Heat dissipation mechanism; 4. Ventilation net; 5. Water pump; 6. Pipeline; 7. Wet curtain; 8. Upper baffle; 9. Lower baffle; 31. Crossflow fan; 32. Blades; 33. Rotation mechanism; 34. Disassembly mechanism; 35. Limiting mechanism; 331. Inner rotor; 332. Outer rotor; 333. Matrix hole; 341. Sleeve; 342. Ejector pin; 343. Engaging part; 344. Retaining ring; 351. Wedge; 352. Push rod; 353. Return spring. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be explained more clearly and completely below in conjunction with the drawings in the embodiments. Of course, the described embodiments are only a part of the present invention, not all of it. Based on this embodiment, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0030] like Figures 1 to 7 As shown, a permanent magnet speed regulator with a detachable heat dissipation structure includes a metal shell 1, the metal shell 1 is connected to a permanent magnet speed regulator 2, and a heat dissipation mechanism 3 for air cooling the permanent magnet speed regulator 2 is provided in the metal shell 1;

[0031] A water pump 5 is provided on one side of the metal shell 1, and the water pump 5 is connected to a pipeline 6. A wet curtain 7 is provided in the metal shell 1 for cooperating with the pipeline 6 to generate water vapor to cool the air entering the metal shell 1; the water pump 5 is connected to an external water source and transports water to the wet curtain 7 through the pipeline 6. When unsaturated air flows through the porous and moist surface of the wet curtain 7, a large amount of water evaporates, and the sensible heat reflected by the temperature in the air is converted into latent heat of evaporation, thereby reducing the temperature of the air itself. The cooled air then cools the permanent magnet speed regulator 2, thereby improving the heat dissipation efficiency.

[0032] The heat dissipation mechanism 3 includes a cross-flow fan 31 , which is provided with a plurality of blades 32 distributed around the circumference of the cross-flow fan 31 . A rotating mechanism 33 connected to the cross-flow fan 31 to drive the cross-flow fan 31 to rotate is provided in the metal housing 1 .

[0033] The blades 32 are arranged in an inverse parabolic shape and are distributed at equal intervals.

[0034] The installation angles of the blades 32 are all positive angles of attack with respect to the diameter of the corresponding cross-flow fan 31 .

[0035] The rotating mechanism 33 includes an inner rotor 331 coaxially distributed with the cross-flow fan 31, an outer rotor 332 nested and connected to the cross-flow fan 31 to drive the cross-flow fan 31 to rotate, and a disassembly mechanism 34 is provided between the outer rotor 332 and the cross-flow fan 31 to facilitate the disassembly and assembly of the cross-flow fan 31; the outer rotor 332 is provided with a plurality of matrix holes 333 distributed around the circumference of the outer rotor 332 for ventilation; the outer rotor 332 is connected to a motor to provide power.

[0036] The disassembly mechanism 34 includes four sleeves 341 fixed to the outer rotor 332 and distributed around the circumference of the outer rotor 332. The cross-flow blower 31 is provided with a push pin 342 that extends into the sleeve 341. The end of the push pin 342 is provided with a clamping portion 343 with a diameter larger than the push pin 342 for engaging with the sleeve 341. The push pin 342 is provided with a retaining ring 344. The sleeve 341 is provided with a limiting mechanism 35 that engages with the retaining portion 343 and the retaining ring 344 to lock the outer rotor 332 and the cross-flow blower 31.

[0037] The limiting mechanism 35 includes a wedge 351 distributed between the engaging portion 343 and the snap ring 344 and slidably mounted on the sleeve 341. The wedge 351 is connected to a push rod 352 slidably mounted on the sleeve 341. A return spring 353 is provided between the push rod 352 and the sleeve 341. Figure 6 As shown, the outer circle of the clamping ring 344 is two opposite conical surfaces, and the diameter of the clamping ring 344 is the same as that of the engaging portion 343, that is, the diameter of the connection between the two opposite conical surfaces is the same as that of the engaging portion 343; the sleeve 341 is pushed to pull the push rod 352 to cooperate with the conical surface to shrink the push rod 352, and the push rod 352 cooperates with the two opposite conical surfaces, and the sleeve 341 is pulled through the push rod 352 to drive the clamping ring 344 to slide and engage with the engaging portion 343. Since the diameter of the clamping ring 344 is the same as that of the engaging portion 343, the wedge 351 can be directly detached from the clamping ring 344 and the engaging portion 343 to remove the cross-flow blower 31.

[0038] The metal shell 1 is provided with an upper baffle 8 and a lower baffle 9 which are symmetrically distributed in the vertical direction to form a one-way perfusion air duct; under the action of the upper baffle 8 and the lower baffle 9, the airflow in the cross-flow fan 31 forms a through flow, and the gas flow can only be from left to right. The cooled air continuously passes through the ventilation net 4 at the left end of the metal shell 1 and contacts the wet curtain 7. After being sucked into the cross-flow fan 31, it realizes the cooling function and then flows out from the ventilation net 4 at the right end of the metal shell.

[0039] An upper baffle 8 and a lower baffle 9 are fixed to the upper and lower ends of the cross-flow fan 31. When the cross-flow fan 31 rotates, the installation angle of the blades 32 will be at a positive angle to the tangential direction of the forward movement. Therefore, after the blades 32 begin to rotate, they will move forward and push the stationary air downward, allowing the air to flow along the surface of the blades 32. When the air leaves the blades 32, due to the loss of the propulsion force of the blades 32, the tangential velocity gradually decreases, and it moves toward the center in an arc, forming a vortex. However, due to the upper baffle 8 and the lower baffle 9, the flow path of part of the air is restricted to a horizontal shape, realizing single-channel heat dissipation with air inlet on the left and air outlet on the right. At the same time, the outer rotor 332 has a uniformly arranged matrix of holes 333, which can directly inject cold air into the interior of the outer rotor 332.

[0040] The curvature of the upper baffle 8 is 50 degrees to 70 degrees, and the curvature of the lower baffle 9 is 110 degrees to 135 degrees.

[0041] Ventilation nets 4 are provided on both the left and right sides of the metal shell 1 , and the wet curtain 7 faces the ventilation net 4 on one side.

[0042] In the present invention, when the permanent magnet speed regulator 2 needs to be cooled, the outer rotor 332 drives the cross flow fan 31 to rotate, and at the same time the water pump 5 delivers water to the wet curtain 7 through the pipeline 6 to generate cold air to cool the permanent magnet speed regulator 2.

[0043] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and description merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A permanent magnet speed regulator with a detachable heat dissipation structure, characterized in that: The invention comprises a metal shell (1), the metal shell (1) is connected to a permanent magnet speed regulator (2), and a heat dissipation mechanism (3) for air-cooling the permanent magnet speed regulator (2) is provided in the metal shell (1); A water pump (5) is provided on one side of the metal shell (1), the water pump (5) is connected to a pipeline (6), and a wet curtain (7) is provided in the metal shell (1) for cooperating with the pipeline (6) to generate water vapor for cooling the air entering the metal shell (1); The heat dissipation mechanism (3) includes a cross-flow fan (31), and a rotating mechanism (33) connected to the cross-flow fan (31) to drive the cross-flow fan (31) to rotate is provided in the metal housing (1); The rotating mechanism (33) includes an inner rotor (331) coaxially distributed with the crossflow fan (31), an outer rotor (332) nested and connected to the crossflow fan (31) to drive the crossflow fan (31) to rotate, and a disassembly mechanism (34) is provided between the outer rotor (332) and the crossflow fan (31) to facilitate disassembly of the crossflow fan (31); The disassembly mechanism (34) includes a sleeve (341) fixed on the outer rotor (332) and distributed in four directions around the circumference of the outer rotor (332); a push pin (342) extending into the sleeve (341) is provided on the cross-flow fan (31); an end of the push pin (342) is provided with a clamping portion (343) having a diameter larger than that of the push pin (342) for clamping with the sleeve (341); a retaining ring (344) is sleeved on the push pin (342); and a limiting mechanism (35) is provided on the sleeve (341) for abutting against the clamping portion (343) and the retaining ring (344) to lock the outer rotor (332) and the cross-flow fan (31).

2. The permanent magnet speed regulator with a detachable heat dissipation structure according to claim 1, characterized in that: The cross-flow fan (31) is provided with a plurality of blades (32) distributed in a circumferential direction around the cross-flow fan (31).

3. The permanent magnet speed regulator with a detachable heat dissipation structure according to claim 2, characterized in that: The blades (32) are arranged in an inverse parabolic shape and are distributed at equal intervals.

4. The permanent magnet speed regulator with a detachable heat dissipation structure according to claim 2, characterized in that: The installation angles of the blades (32) are all at a positive angle of attack to the diameter of the corresponding cross-flow fan (31).

5. The permanent magnet speed regulator with a detachable heat dissipation structure according to claim 1, characterized in that: The limiting mechanism (35) includes a wedge (351) distributed between the engaging portion (343) and the snap ring (344) and slidably mounted on the sleeve (341); the wedge (351) is connected to a push rod (352) slidably mounted on the sleeve (341); and a return spring (353) is provided between the push rod (352) and the sleeve (341).

6. The permanent magnet speed regulator with a detachable heat dissipation structure according to claim 4, characterized in that: An upper baffle (8) and a lower baffle (9) are provided in the metal shell (1) and are symmetrically distributed in the vertical direction to form a one-way perfusion air duct.

7. The permanent magnet speed regulator with a detachable heat dissipation structure according to claim 6, characterized in that: The upper baffle (8) has an arc angle of 50 to 70 degrees, and the lower baffle (9) has an arc angle of 110 to 135 degrees.

8. The permanent magnet speed regulator with a detachable heat dissipation structure according to claim 1, characterized in that: Ventilation nets (4) are provided on both the left and right sides of the metal shell (1), and the wet curtain (7) faces the ventilation net (4) on one side.

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