CN219592233U - Heat radiation structure of low-voltage high-power switch reluctance motor - Google Patents

Abstract

The utility model belongs to the technical field of switch reluctance motor equipment, and particularly relates to a low-voltage high-power switch reluctance motor radiating structure, which comprises an inner fan, a water-cooling shell, a front end cover and a rear end cover, wherein the inner fan is arranged in a motor and fixedly sleeved on a motor shaft of a motor rotor; the water-cooling shell comprises a shell outer sleeve and a shell inner sleeve fixedly sleeved in the shell outer sleeve, a water channel and an air channel are arranged in the shell inner sleeve at intervals, and two ends of the air channel are communicated with a space where the inner fan is located through a through hole formed in the shell inner sleeve. According to the utility model, the air circulation flow in the motor is realized through the inner fan, so that the heat in the motor is not concentrated, and the heat is uniformly distributed; the heat in the air in the ventilating duct is taken away by the water channel by utilizing the ventilating duct and the water channel which are arranged in the inner sleeve of the casing at intervals, and the radiating efficiency is high.

Description

Heat radiation structure of low-voltage high-power switch reluctance motor

Technical Field

The utility model belongs to the technical field of switch reluctance motor equipment, and particularly relates to a low-voltage high-power switch reluctance motor radiating structure.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The switch reluctance motor is a novel speed regulating motor, and the speed regulating system has the advantages of a direct current speed regulating system and an alternating current speed regulating system, and is a latest generation stepless speed regulating system of a relay frequency conversion speed regulating system and a brushless direct current motor speed regulating system. The switch reluctance motor is applied to various industries, the switch reluctance motor commonly used in industry at present is of a closed air cooling structure, because the switch reluctance motor winding is a concentrated winding, the number of conductors in each groove is more, the low-voltage high-power switch reluctance motor has large current, copper wires are seriously heated, the long-term continuous operation is easy to cause shutdown faults, and the long-term motor insulation is damaged, so that the service life of the motor is influenced.

However, in the prior art, the adoption of the closed air cooling structure has the defects that: external air is exchanged with the motor, and when the temperature of the air is higher than that of the hot air in the weather, the heat dissipation efficiency of the switch reluctance motor is low; secondly, the switch reluctance motor is a concentrated winding, the requirements can be met only by better heat dissipation for the low-voltage high-power switch reluctance motor, and the traditional closed air cooling structure dissipates heat of the motor shell through an external air source, so that heat treatment in the motor is not considered.

In view of this, it is necessary to design a heat dissipation structure of a switched reluctance motor with good heat dissipation effect and capable of dredging and dissipating heat in the motor for a low-voltage high-power switched reluctance motor.

Disclosure of Invention

The utility model aims to solve the technical problems that: overcomes the defects of the prior art and provides a low-voltage high-power switch reluctance motor heat dissipation structure.

The utility model solves the problems existing in the prior art by adopting the technical scheme that:

the utility model provides a low-voltage high-power switch reluctance motor radiating structure, which comprises an inner fan fixedly sleeved on a motor shaft of a motor rotor, wherein the inner fan is positioned in a switch reluctance motor shell, and the shell comprises a water-cooling shell, a front end cover and a rear end cover which are fixedly arranged at two ends of the water-cooling shell;

the water-cooling shell comprises a shell outer sleeve and a shell inner sleeve fixedly sleeved in the shell outer sleeve;

an air channel is arranged in the inner sleeve of the casing, and two ends of the air channel are communicated with the space where the inner fan is located through holes formed in the inner sleeve of the casing.

Preferably, a water channel is arranged in the inner sleeve of the shell, the water channel and the ventilation channel are arranged at intervals, the water channel is arranged along the axial direction, and two ends of the water channel are respectively communicated with the water inlet and the water outlet; the water inlet and the water outlet are fixedly arranged on the casing jacket.

Preferably, the water inlet and the water outlet are connected with an external water supply pipeline.

Preferably, two channels connected in parallel are arranged in the inner sleeve of the shell, and the number of the water inlets and the water outlets is two.

Preferably, a closed space is formed between the motor shaft and the front end cover and the rear end cover which are fixedly arranged at the two ends of the water-cooling machine shell.

Preferably, the shell inner sleeve is in thermal fit with the shell outer sleeve.

Preferably, the motor stator core and the winding are fixedly arranged on the inner sleeve of the shell.

Preferably, the inner fan is an axial flow fan.

Compared with the prior art, the utility model has the beneficial effects that:

(1) The internal fan realizes the air circulation flow in the motor, so that the heat in the motor can not be concentrated and the heat distribution is uniform.

(2) Through the air duct and the water channel which are arranged at intervals in the inner sleeve of the casing, heat in the air duct is taken away by the water channel, and the heat dissipation efficiency is high.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

Figure 1 is a schematic diagram of the internal structure of a low-voltage high-power switch reluctance motor with a heat dissipation structure,

FIG. 2 is a schematic diagram of a water-cooled housing of a heat dissipation structure of a low-voltage high-power switch reluctance motor according to the present utility model,

FIG. 3 is a schematic diagram of the heat dissipation structure of the low-voltage high-power switch reluctance motor casing,

fig. 4 is a schematic diagram of a casing jacket of a heat dissipation structure of a low-voltage high-power switch reluctance motor according to the present utility model.

In the figure:

1. front end cover, 2, water-cooling casing, 3, inner fan, 4, rear end cover, 5, motor shaft, 21, casing inner sleeve, 22, casing outer sleeve, 211, air duct, 212, water course.

Detailed Description

The utility model will be further described with reference to the drawings and examples.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments in accordance with the present disclosure. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, are merely relational terms determined for convenience in describing structural relationships of the various components or elements of the present disclosure, and do not denote any one of the components or elements of the present disclosure, and are not to be construed as limiting the present disclosure.

Fig. 1 shows an overall structure diagram of a low-voltage high-power switch reluctance motor heat dissipation structure, which comprises an inner fan 3 fixedly sleeved on a motor shaft 5, wherein the inner fan 3 is positioned in a switch reluctance motor shell, and the inner fan 3 is an axial flow fan. The shell comprises a water-cooling shell 2, and a front end cover 1 and a rear end cover 4 which are fixedly arranged at two ends of the water-cooling shell 2; the water-cooling machine shell 2 is fixedly arranged at the two ends of the water-cooling machine shell 2, and a closed space is formed between the front end cover 1, the rear end cover 4 and the motor shaft 5. Referring to fig. 2 and 4, the water-cooled casing 2 includes a casing outer jacket 22 and a casing inner jacket 21 fixedly sleeved inside the casing outer jacket 22, in this embodiment, the casing inner jacket 21 is in thermal fit with the casing outer jacket 22, i.e. fixedly connected by a thermal sleeve manner, and a stator core and a winding are fixedly arranged on the casing inner jacket 21. Referring to fig. 3, an air duct 211 is provided inside the housing inner case 21, and two ends of the air duct 211 are communicated with a space where the inner fan 3 is located through a through hole formed in the housing inner case 21.

When the motor runs under load, the motor shaft 5 drives the inner fan 3 to rotate together, so that hot air in the motor passes through the rotor from the rear end of the motor to the front end, returns to the rear end through the ventilating duct 211 on the inner casing 3, promotes the internal air to drive heat to circularly flow, and brings heat out through the water channel 212 arranged at intervals with the ventilating duct 211 and the water outlet on the outer casing 22.

The above embodiment promotes the circulation flow of the air inside the motor, drives the flow of the internal heat through the flow of the internal air, is beneficial to preventing the high-temperature area generated inside the motor, such as the winding of the switched reluctance motor from generating heat, and can rapidly dissipate the heat emitted by the winding through the circulation flow of the air.

In some embodiments, in order to better promote the heat dissipation effect, the housing inner sleeve 21 is internally provided with a water channel 212, the water channel 212 is spaced from the air channel 211, two ends of the water channel 212 are respectively communicated with the water inlet and the water outlet, the water channel is axially arranged, and the water inlet and the water outlet of the water channel 212 are separated; the water inlet and the water outlet are fixedly arranged on the casing jacket 22; the water inlet and the water outlet are connected with an external water supply pipeline, and the external water supply pipeline is an external pressure water supply pipeline. The air channel 211 is surrounded by the water channel 212, air reaching the rear end of the motor is cooled and circulates in sequence, the air at the rear end of the motor is always cooled, the heat productivity of the motor winding, the iron core and the like is transferred to the shell, and the heat productivity is carried by the water in the water channel 212, so that the heat balance of the motor is realized, the motor is protected, and the service life of the motor is prolonged.

For further heat dissipation, in some embodiments, two parallel water channels 212 are provided inside the casing inner sleeve 21, and the number of the water inlets and the water outlets is two.

According to the heat dissipation structure of the switch reluctance motor, the air circulation flow in the motor is realized through the inner fan 3, so that the heat in the motor is not concentrated, and the heat is uniformly distributed; the heat in the air channel 211 is taken away by the water channel 212 by the air channel 211 and the water channel 212 which are arranged in the casing inner sleeve 21 at intervals, so that the heat dissipation efficiency is high.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

While the foregoing description of the embodiments of the present utility model has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the utility model, but rather, it is intended to cover all modifications or variations within the scope of the utility model as defined by the claims of the present utility model.

Claims (8)

1. The utility model provides a high-power switch reluctance motor heat radiation structure of low pressure which characterized in that:

the motor comprises an inner fan (3) fixedly sleeved on a motor shaft (5), wherein the inner fan (3) is positioned inside a switch reluctance motor shell, and the shell comprises a water-cooling shell (2), and a front end cover (1) and a rear end cover (4) fixedly installed at two ends of the water-cooling shell (2);

the water-cooling shell (2) comprises a shell outer sleeve (22) and a shell inner sleeve (21) fixedly sleeved in the shell outer sleeve (22);

an air duct (211) is arranged in the casing inner sleeve (21), and two ends of the air duct (211) are communicated with a space where the inner fan (3) is located through a through hole formed in the casing inner sleeve (21).

2. The low voltage high power switched reluctance motor heat dissipation structure according to claim 1, wherein:

a water channel (212) is arranged in the casing inner sleeve (21), the water channel (212) and the ventilation channel (211) are arranged at intervals, the water channel (212) is axially arranged, and two ends of the water channel (212) are respectively communicated with the water inlet and the water outlet; the water inlet and the water outlet are fixedly arranged on the casing jacket (22).

3. The low voltage high power switched reluctance motor heat dissipation structure according to claim 2, wherein:

the water inlet and the water outlet are connected with an external water supply pipeline.

4. The low voltage high power switched reluctance motor heat dissipation structure according to claim 2, wherein:

two parallel water channels (212) are arranged in the casing inner sleeve (21), and the number of the water inlets and the water outlets is two.

5. The low voltage high power switched reluctance motor heat dissipation structure according to claim 1, wherein:

the water-cooling machine shell (2) and the front end cover (1) and the rear end cover (4) which are fixedly arranged at two ends of the water-cooling machine shell (2) form a closed space with the motor shaft (5).

6. The low voltage high power switched reluctance motor heat dissipation structure according to claim 5, wherein:

the shell inner sleeve (21) is in thermal fit with the shell outer sleeve (22).

7. The low voltage high power switched reluctance motor heat dissipation structure according to claim 6, wherein:

the stator core and the winding are fixedly arranged on the shell inner sleeve (21).

8. The low voltage high power switched reluctance motor heat dissipation structure according to claim 1, wherein:

the inner fan (3) is an axial flow fan.