Fan structure of IP23 high-efficiency motor

Abstract

The utility model belongs to the technical field of motor cooling, and relates to a fan structure of an IP23 high-efficiency motor, which comprises a motor shaft and a rotor arranged on the motor shaft, and is characterized in that two inner fans are fixed on the motor shaft through a shaft shoulder of the motor shaft and a shaft check ring, and the inner fans are fixed on the motor shaft through shaft shoulders of the motor shaft and shaft check rings. The two inner fans are symmetrically installed at the two ends of the rotor. The wind wings and the rotor are separated, the motor shaft and the rotor are cooled through the rotation of the inner fan along with the motor shaft, the casting difficulty of the rotor is reduced, and the heat dissipation effect is good; the inner fan is additionally arranged on the motor shaft, so that the casting difficulty of the rotor is reduced, and the heat dissipation effect of the motor shaft and the rotor in use is improved.

Description

Technical Field

[0001] This utility model belongs to the field of motor cooling technology and relates to a fan structure for an IP23 high-efficiency motor. Background Technology

[0002] The motor industry is a traditional, fundamental industry and a crucial part of the national economy. With the rapid development of China's economy, the motor industry has also entered a phase of high-speed growth. As a basic power equipment, motors have maintained stable and rapid growth in recent years. Numerous policies and industrial plans in recent years have accelerated the development of motors towards high efficiency and energy conservation. High-efficiency motors refer to motors with a high ratio of effective output power to input power, primarily high-efficiency electric motors. While converting electrical energy into mechanical energy, electric motors also lose some energy, including winding losses, core losses, windage losses, and load stray losses. Compared to ordinary motors, high-efficiency motors have higher energy conversion efficiency and lower energy loss in the energy conversion process from electrical energy to mechanical energy.

[0003] The IP23 motor is an open-type self-cooled motor, mainly consisting of a frame, a motor shaft passing through the frame, and a stator and rotor installed inside the frame. The heat dissipation of the motor shaft and rotor mainly relies on the rotor fan blades rotating with the motor shaft to extract hot air from the vicinity of the motor shaft and rotor. Traditionally, the rotor fan blades are cast simultaneously with the internal guide bars and end rings during the aluminum casting process of the rotor. This not only makes the casting of the rotor more difficult, but also makes the heat dissipation effect of the motor shaft and rotor less than ideal during motor use. Therefore, the existing technology has been improved. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a fan structure for an IP23 high-efficiency motor. By placing an internal fan on the motor shaft, the casting difficulty of the rotor is reduced, and the heat dissipation effect of the motor shaft and rotor during use is improved.

[0005] According to the technical solution of this utility model: a fan structure for an IP23 high-efficiency motor, including a motor shaft and a rotor mounted on the motor shaft, characterized in that: an inner fan, the inner fan being fixed to the motor shaft by a motor shaft shoulder and a shaft retaining ring, and two inner fans being provided, the two inner fans being symmetrically mounted at both ends of the rotor.

[0006] As a further improvement of this utility model, the internal fan includes an annular steel plate sleeved on the shoulder of the motor shaft, a disc-shaped steel plate fixedly sleeved on the annular steel plate, and multiple fan blades mounted on the disc-shaped steel plate.

[0007] As a further improvement of this utility model, the disc-shaped steel plate is provided with a plurality of reserved threaded holes, and a balance block is inserted into the reserved threaded holes.

[0008] As a further improvement of this utility model, thirteen reserved threaded holes are provided, and the thirteen reserved threaded holes are arranged at equal angles with the axis of the disc-shaped steel plate as the center.

[0009] As a further improvement of this utility model, the disc-shaped steel plate is provided with thirteen fan blades, the reserved threaded holes are provided between adjacent fan blades, and the thirteen fan blades are arranged at equal angles with the axis of the disc-shaped steel plate as the center.

[0010] As a further improvement of this utility model, two loading and unloading threaded holes are symmetrically arranged on the annular steel plate.

[0011] As a further improvement of this utility model, the end of the annular steel plate is coaxially welded to the disc-shaped steel plate, and the fan blade is welded to the disc-shaped steel plate.

[0012] As a further improvement of this utility model, the fan blade is a square steel plate, and the disc-shaped steel plate is welded to one side of the square steel plate.

[0013] As a further improvement of this utility model, the annular steel plate and the motor shaft are in a transition fit.

[0014] The technical advantages of this utility model are as follows: This utility model has a reasonable and ingenious structure. By separating the fan blades from the rotor, the internal fan rotates with the motor shaft to cool the motor shaft and rotor, which reduces the casting difficulty of the rotor and has a good heat dissipation effect. This utility model reduces the casting difficulty of the rotor and improves the heat dissipation effect of the motor shaft and rotor during use by placing an internal fan on the motor shaft. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention in use.

[0016] Figure 2 This is a schematic diagram of the internal fan in this utility model.

[0017] Figure 3 This is a front view of the internal fan in this utility model. Detailed Implementation

[0018] The following description, in conjunction with the accompanying drawings, describes specific embodiments of the present invention as further improvements to the present invention.

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The described embodiments are merely 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 should fall within the protection scope of the present invention.

[0020] like Figure 1-3 As shown, a fan structure for an IP23 high-efficiency motor includes a motor shaft 1 and a rotor 4 mounted on the motor shaft 1. The characteristic is that there are two inner fans 2, which are fixed to the motor shaft 1 by a shoulder and a retaining ring 3. The two inner fans 2 are symmetrically mounted at both ends of the rotor 4.

[0021] By separating the fan blades from the rotor 4, the internal fan 2 rotates with the motor shaft 1 to cool the motor shaft 1 and the rotor 4, reducing the casting difficulty of the rotor 4 and improving the heat dissipation effect. This utility model reduces the casting difficulty of the rotor 4 and improves the heat dissipation effect of the motor shaft 1 and the rotor 4 during use by placing an internal fan 2 on the motor shaft 1.

[0022] like Figure 1-3 As shown, the internal fan 2 includes an annular steel plate 201 sleeved on the shoulder of the motor shaft 1, a disc-shaped steel plate 202 fixedly sleeved on the annular steel plate 201, and multiple fan blades 203 mounted on the disc-shaped steel plate 202. In this embodiment, the rotation of the motor shaft 1 drives the annular steel plate 201, the disc-shaped steel plate 202 and the multiple fan blades 203 to rotate, thereby accelerating the airflow around the motor shaft 1 and the rotor 4, dissipating heat from the motor shaft 1 and the rotor 4, resulting in good heat dissipation.

[0023] The disc-shaped steel plate 202 is provided with a plurality of reserved threaded holes 2021, and a balance block 5 is inserted into the reserved threaded holes 2021. In this embodiment, during installation, after the rotor 4 passes through the motor shaft 1 according to the specified size, the inner fans 2 on both sides are heat-fitted onto the motor shaft 1 and fixed by the shaft retaining ring 3 and the shaft shoulder. After the assembly is completed, dynamic balancing is performed, and the balance block 5 is added at the reserved threaded hole 2021 of the inner fan 2 to adjust the balance.

[0024] like Figure 1-3 As shown, there are thirteen reserved threaded holes 2021, and the thirteen reserved threaded holes 2021 are set at equal angles with the axis of the disc-shaped steel plate 202 as the center. In this embodiment, the balance block 5 is installed by installing the thirteen reserved threaded holes 2021 set at equal angles with the axis of the disc-shaped steel plate 202 as the center, so that the internal fan 2 is more stable during rotation.

[0025] The disc-shaped steel plate 202 has thirteen fan blades 203. The reserved threaded holes 2021 are provided between adjacent fan blades 203. The thirteen fan blades 203 are arranged at equal angles with the axis of the disc-shaped steel plate 202 as the center. In this embodiment, by providing thirteen fan blades 203 arranged at equal angles with the axis of the disc-shaped steel plate 202 as the center, the airflow of the internal fan 2 can be more uniform and the heat dissipation effect can be better.

[0026] Two mounting and dismounting threaded holes 2011 are symmetrically arranged on the annular steel plate 201. In this embodiment, since the inner fan 2 is heat-fitted onto the motor shaft 1, the two mounting and dismounting threaded holes 2011 on the annular steel plate 201 facilitate the disassembly of the inner fan 2.

[0027] The end of the annular steel plate 201 is coaxially welded to the disc-shaped steel plate 202, and the fan blade 203 is welded to the disc-shaped steel plate 202. In this embodiment, during manufacturing, the annular steel plate 201, the disc-shaped steel plate 202 and the fan blade 203 are welded, annealed after welding, the weld is ground smooth, and after it is completely cooled, it is machined according to the drawings. After the required dimensions are achieved, the burrs are removed to make it flat and smooth.

[0028] The fan blade 203 is a square steel plate, and the disc-shaped steel plate 202 is welded to one side of the square steel plate. In this embodiment, the square steel plate made of steel is widely available and has low cost.

[0029] The annular steel plate 201 and the motor shaft 1 are in a transition fit; in this embodiment, when the annular steel plate 201 and the motor shaft 1 are in a transition fit, the internal fan 2 is securely installed.

[0030] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A fan structure of an IP23 high-efficiency motor, comprising a motor shaft (1), a rotor (4) mounted on the motor shaft (1), characterized in that: Inner fan (2), the inner fan (2) is fixed on motor shaft (1) by motor shaft (1) shaft shoulder and shaft baffle (3), the inner fan (2) is provided with two, two the inner fan (2) symmetry is installed at both ends of rotor (4).

2. The IP23 high efficiency motor fan construction of claim 1 wherein: The inner fan (2) includes a circular steel plate (201) sleeved on the shaft shoulder of the motor shaft (1), a disc-shaped steel plate (202) fixedly sleeved on the circular steel plate (201), and a plurality of fan blades (203) installed on the disc-shaped steel plate (202).

3. The IP23 high efficiency motor fan construction of claim 2 wherein: A plurality of reserved threaded holes (2021) are arranged on the disc-shaped steel plate (202), and a balance block (5) is inserted into the reserved threaded hole (2021).

4. The IP23 high efficiency motor fan construction of claim 3 wherein: The reserved threaded holes (2021) are provided with thirteen, and the thirteen reserved threaded holes (2021) are arranged at equal angles with the axis of the disc-shaped steel plate (202) as the center.

5. The IP23 high efficiency motor fan construction of claim 4 wherein: The disc-shaped steel plate (202) is provided with thirteen fan blades (203), the reserved threaded holes (2021) are arranged between adjacent fan blades (203), and the thirteen fan blades (203) are arranged at equal angles with the axis of the disc-shaped steel plate (202) as the center.

6. The IP23 high efficiency motor fan construction of claim 2 wherein: The circular steel plate (201) is symmetrically provided with two dismounting threaded holes (2011).

7. The IP23 high efficiency motor fan construction of claim 2 wherein: The end of the circular steel plate (201) is coaxially welded with the disc-shaped steel plate (202), and the fan blades (203) are welded with the disc-shaped steel plate (202).

8. The IP23 high efficiency motor fan construction of claim 2 wherein: The fan blade (203) is a square steel plate, one side of the square steel plate is welded with the disc-shaped steel plate (202).

9. The IP23 high efficiency motor fan construction of claim 2 wherein: The circular steel plate (201) is in transition fit with the motor shaft (1).

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