Linear integrated cooling fan of traction motor

Abstract

The utility model relates to the technical field of fans, and discloses a traction motor linear integrated cooling fan which comprises an impeller, an air duct, a rotor, a front end cover and a rear end cover. The air duct comprises an inner air duct and an outer air duct; the inner air duct and the outer air duct are integrally formed; the rotor is fixedly arranged in the inner air duct through the front end cover and the rear end cover; the impeller is arranged between the inner air duct and the outer air duct and is connected with the rotor in the inner air duct; the rotor is used for driving the impeller to rotate. According to the traction motor linear integrated cooling fan, through the integrated inner and outer air cylinders, the overall structure is simple, and the strength is high; the motor rotor is arranged in the air duct, the motor rotor and the impeller form a closed-loop system in the air duct, noise and vibration of the fan are effectively reduced, materials are saved, cost is reduced, and the efficient linear integrated cooling fan is obtained.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan technical field especially relates to a traction motor linear integrated cooling fan. BACKGROUND

[0002] The fan runs in the indoor environment of the airport line subway room, requires adapting to the harsh environment of much wind sand, simultaneously requires energy saving, high efficiency, light weight, low noise, convenient maintenance, stable operation and safe and reliable, the fan is installed on the top mounting frame of the subway vehicle, cooling air enters the inner chamber of the cooling system from the mesh cover, impeller does work and pressurizes, and is discharged from the fan air outlet, reaches the cooling effect for linear motor cooling. SUMMARY

[0003] The utility model discloses a traction motor linear integrated cooling fan with low noise and high efficiency, and the specific technical scheme is as follows:

[0004] A traction motor linear integrated cooling fan, comprising an impeller, a wind tube, a rotor, a front end cover and a rear end cover.

[0005] The wind tube comprises an inner wind tube and an outer wind tube, and the inner wind tube and the outer wind tube are integrally formed.

[0006] The rotor is fixedly arranged in the inner wind tube through the front end cover and the rear end cover.

[0007] The impeller is arranged between the inner wind tube and the outer wind tube and connected with the rotor in the inner wind tube, and the rotor is used for driving the impeller to rotate.

[0008] Preferably, the blades of the impeller are multi-wing blades.

[0009] Preferably, the installation angle of the blades is 47°, and the number of the blades is 10.

[0010] Preferably, a wind channel is further arranged between the inner wind tube and the outer wind tube.

[0011] Preferably, the radial gaps between the impeller and the wind tube are uniform.

[0012] Preferably, the wind tube and the impeller are integrally formed by aluminum alloy casting.

[0013] Preferably, the impeller is mounted on the rotor through bolts.

[0014] The technical scheme of the utility model has the following beneficial effects:

[0015] The utility model discloses a traction motor straight line integral type cooling fan, including impeller, air duct, rotor, front end cover and back end cover, the air duct includes inner air duct and outer air duct, the inner air duct and outer air duct are integrally formed, the rotor is fixedly arranged in the inner air duct through the front end cover and back end cover, the impeller is arranged between the inner air duct and outer air duct and is connected with the rotor in the inner air duct, and the rotor is used for driving the impeller rotation.

[0016] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. Below, referring to the drawing, the utility model will be explained in further detail. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings that form part of the utility model are used to provide further understanding of the utility model, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model and do not constitute improper limitation to the utility model. In the drawings:

[0018] Figure 1 It is structure schematic diagram of traction motor straight line integral type cooling fan of the utility model;

[0019] Figure 2 It is structure schematic diagram of traction motor straight line integral type cooling fan of the utility model; Figure 1 It is structure schematic diagram of traction motor straight line integral type cooling fan of the utility model;

[0020] Wherein: 1, impeller, 1.1, blade, 2, air duct, 2.1, inner air duct, 2.2, outer air duct, 3, rotor, 4, front end cover, 5, back end cover. DETAILED DESCRIPTION

[0021] The embodiment of the utility model is explained in detail below in combination with the drawings.

[0022] Reference Figure 1The utility model provides a linear integrated cooling fan of traction motor, including impeller 1, air duct 2, rotor 3, front end cover 4 and rear end cover 5, air duct 2 includes inner air duct 2.1 and outer air duct 2.2, inner air duct 2.1 and outer air duct 2.2 are integrally formed, rotor 3 is fixedly arranged in the inside of inner air duct 2.1 through front end cover 4 and rear end cover 5, impeller 1 is arranged between inner air duct 2.1 and outer air duct 2.2 and is connected with the rotor 3 in the inside of inner air duct 2.1, and rotor 3 is used to drive impeller 1 rotation, linear integrated cooling fan of traction motor is through the integration of inner air duct and outer air duct, and the whole structure is simple and the strength is higher, and the motor rotor is placed in the inside of air duct, and with the impeller in the air duct inside forms a closed loop system, effectively reduces the noise and vibration of fan, and saves material and reduces cost, provides a linear integrated cooling fan of simple structure, stable operation, light weight, high efficiency, low noise, convenient maintenance and the use environment of adapting airport line subway traffic project.

[0023] In the embodiment, the inner air duct, the front end cover, the rear end cover and the rotor jointly form a closed loop power system.

[0024] Reference Figure 2 The blades 1.1 of the impeller 1 are multi-blade blades. The multi-blade structure has the characteristics of stable flow rate and low noise, and the fan efficiency is higher.

[0025] The multi-blade structure has the characteristics of stable flow rate and low noise, the blade installation angle is 47°, and the number of blades is 10. The cooling system of the fan is composed of the impeller and other components outside the inner air duct. The power system and the cooling system jointly compose the linear integrated cooling fan. The inner air duct of this structure not only serves as the shell of the internal power system, but also forms the fan flow channel together with the outer air duct, which can reduce the vibration of the fan and reduce the material cost.

[0026] The inner air duct 2.1 and the outer air duct 2.2 are also provided with an air duct. The air duct is formed at one time when the air duct is processed, which reduces the cost.

[0027] The radial clearance between the impeller 1 and the air duct 2 is uniform. The clearance is preferably 1mm, which can reduce noise and vibration. The layout of the impeller, the air duct and the rotor is reasonable and compact, so that the axial clearance between the air duct and the impeller is uniform. When the fan is at a temperature of 20℃, the rotation speed is 2900rpm, the flow rate is 15m / min, the static pressure is 350Pa, the power is ≤400W, the A-weighted sound power is less than or equal to 75dB(A), the multi-blade axial fan can calculate the A sound level of 30, and according to the standard JB / T 8690-2014, the A sound level of the multi-blade centrifugal fan is ≤35. The A sound level of the multi-blade axial fan is about 5dB lower than that of the similar multi-blade axial fan, the fan noise reduction technology and noise index have reached the international leading level, and the efficiency reaches 36%, which is at a high level among the same type of multi-blade axial fans.

[0028] The wind cylinder 2 and the impeller 1 are integrally formed by aluminum alloy casting. The wind cylinder and the impeller are integrally formed by aluminum alloy casting, high in precision, and capable of effectively reducing vibration and noise.

[0029] The impeller 1 is mounted on the rotor 3 by bolts. The bolts facilitate mounting and dismounting.

[0030] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. Any modification and change made by those skilled in the art within the spirit and principle of the present application shall fall within the scope of the present application.

Claims

1. A linear integrated cooling fan for traction motors, characterized in that, It includes an impeller (1), a blower (2), a rotor (3), a front end cover (4), and a rear end cover (5); The air duct (2) includes an inner air duct (2.1) and an outer air duct (2.2); the inner air duct (2.1) and the outer air duct (2.2) are integrally formed; The rotor (3) is fixedly installed inside the inner air duct (2.1) by the front end cover (4) and the rear end cover (5); The impeller (1) is disposed between the inner air duct (2.1) and the outer air duct (2.2) and is connected to the rotor (3) inside the inner air duct (2.1); the rotor (3) is used to drive the impeller (1) to rotate.

2. The integrated linear cooling fan for traction motors according to claim 1, characterized in that, The blades (1.1) of the impeller (1) are multi-bladed blades (1.1).

3. The integrated linear cooling fan for traction motors according to claim 2, characterized in that, The installation angle of the blade (1.1) is 47°, and the number of blades (1.1) is 10.

4. The integrated linear cooling fan for traction motors according to claim 1, characterized in that, An air duct is also provided between the inner air duct (2.1) and the outer air duct (2.2).

5. The integrated linear cooling fan for traction motors according to claim 1, characterized in that, The radial gap between the impeller (1) and the air duct (2) is uniform.

6. The integrated linear cooling fan for traction motors according to claim 1, characterized in that, The air duct (2) and impeller (1) are integrally formed by aluminum alloy casting.

7. The integrated linear cooling fan for traction motors according to claim 1, characterized in that, The impeller (1) is bolted to the rotor (3).

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