CN211009217U

CN211009217U - Fan of energy storage motor cooling system

Info

Publication number: CN211009217U
Application number: CN201922077366.XU
Authority: CN
Inventors: 卢亮; 曾虎彪; 詹腾; 李剑; 柳涛; 张海涛; 余浩
Original assignee: Hunan Liancheng Special Equipment Co ltd; Hunan Lince Rolling Stock Equipment Co Ltd
Current assignee: Hunan Liancheng Special Equipment Co ltd; Hunan Lince Rolling Stock Equipment Co Ltd
Priority date: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-07-14
Anticipated expiration: 2029-11-27

Abstract

The utility model provides an energy storage motor cooling system fan. The fan comprises a first fan, a second fan and a rack; the first fan and the second fan are arranged on the rack; the fan I comprises a first impeller and a first motor; the first impeller is connected with an output shaft of the motor; the first impeller comprises a reinforcing ring and wide blades which are uniformly distributed along the circumference of the first impeller; the reinforcing ring is connected with each wide blade and used for providing high-flow cooling air; the second fan comprises a second impeller and a second motor; the second impeller is connected with an output shaft of the second motor and used for providing power for the second impeller; the second impeller comprises a long blade and a short blade single piece; the short blade single pieces are uniformly distributed along the circumferential direction of the impeller II; the long blades are uniformly arranged between the short blade single pieces at intervals, and each short blade single piece comprises at least one short blade; to provide a low flow of cooling air. The utility model discloses satisfy the different cooling demands of two motors of energy storage motor, the fan of this application is for conventional fan, and its fan efficiency has promoted 6% -8%.

Description

Fan of energy storage motor cooling system

Technical Field

The utility model relates to a motor cooling technical field, concretely relates to energy storage motor cooling system fan.

Background

With the rapid development of equipment manufacturing technology in China in recent years, higher requirements are put forward on the performance, appearance, reliability and safety of products; the fan of the cooling system of the energy storage motor is taken as a core component for heat dissipation of the cooling system of the energy storage motor, and the effects are gradually improved, the vibration is reduced, the noise is reduced and the weight is lightened. The energy storage motor comprises two motors, and first motor heat dissipation demand is higher, need provide the cooling air of high flow, and second motor heat dissipation requires lowly, and the cooling demand disparity of two fans is great, if use two high flow fans to cool off simultaneously, can cause the energy extravagant, if use low flow fan to cool off simultaneously, then can't satisfy the cooling demand completely. If two independent fans are arranged to cool the energy storage motor, the occupied area is large, noise can generate noise pollution to the working environment when the fans operate, the physical and psychological health of operators is influenced, and the noise (sound pressure level) of the whole fan in the system is not more than 85dB (A).

In summary, there is a need for a fan of a cooling system for an energy storage motor to solve the problems in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an energy storage motor cooling system fan to two different problems of motor cooling demand of solving energy storage motor.

In order to achieve the purpose, the utility model provides a fan of an energy storage motor cooling system, which comprises a first fan, a second fan and a frame; the first fan and the second fan are arranged on the rack;

the first fan comprises a first air inlet duct, a first shell, a first impeller and a first motor; the first air inlet duct is arranged on the first shell; the first impeller is connected with an output shaft of the motor and used for providing power for the first impeller; the first impeller comprises a reinforcing ring and wide blades which are uniformly distributed along the circumference of the first impeller; the reinforcing ring is connected with each wide blade and used for providing high-flow cooling air;

the second fan comprises a second air inlet duct, a second shell, a second impeller and a second motor; the air inlet duct II is arranged on the shell II; the second impeller is connected with an output shaft of the second motor and used for providing power for the second impeller; the impeller two comprises a long blade and a short blade single piece; the short blade single pieces are uniformly distributed along the circumferential direction of the impeller II; the long blades are uniformly arranged between the short blade single pieces at intervals, and each short blade single piece comprises at least one short blade; to provide a low flow of cooling air.

Preferably, the length of the wide blade along the axial direction of the impeller is 0.3-0.5 times of the diameter of the impeller; the axial size of the long blades and the short blades along the second impeller is 0.1-0.3 times of the diameter of the second impeller.

Preferably, the edge of the wide blade close to the outer side of the impeller is serrated, so that the noise of the fan is reduced; the edges of the long blades and the short blades close to the outer side of the second impeller are in a sawtooth shape, so that the noise of the second fan is reduced.

Preferably, the reinforcing ring is welded in the middle of the wide blade to improve the strength of the first impeller.

Preferably, the number of the short blades is twice that of the long blades; the long blade is spoon-shaped and is used for improving the acting effect of the second impeller; the short blade has an arc-shaped section and is used for improving the stability of a secondary flow field of the impeller.

Preferably, a screen plate is arranged on the inner wall of the shell; silencing cotton is arranged in a gap between the screen plate and the first shell and used for reducing noise generated when the first fan works; a screen plate is arranged on the inner wall of the second shell; and silencing cotton is arranged in a gap between the screen plate and the second shell and used for reducing noise generated when the second fan works.

Preferably, the first fan and the second fan are volute type centrifugal fans; the first shell is of a volute structure and is used for guiding airflow to an outlet of the first shell; and the second shell is of a volute structure and is used for guiding airflow to the second shell outlet.

Preferably, the first fan and the second fan are longitudinally installed along the rack so as to reduce the floor area of the device.

Preferably, the first impeller and the second impeller are mounted on the frame through a baffle, a lock washer and a nut so as to form stable connection between the first impeller and the second impeller and the frame.

Preferably, the inlet ends of the first air inlet duct and the second air inlet duct are connected with metal hoses for adjusting the air inlet position of the fan; the first shell is provided with a first flange and is used for connecting an air outlet channel of a fan; and a second flange is arranged on the second shell and is used for connecting an air outlet channel of the second fan.

Use the technical scheme of the utility model, following beneficial effect has:

(1) in the utility model, because the length of the blade along the axial direction of the impeller is in direct proportion to the flow of the fan, the first impeller is uniformly provided with wide blades, so that high-flow cooling air is provided for the first motor of the energy storage motor; through set up along the less long blade of impeller axial dimensions and short blade at impeller two last intervals, provide the cooling air of the stable low flow in flow field to energy storage motor second motor, satisfy the different cooling demands of two motors of energy storage motor, the fan of this application for conventional fan, its fan efficiency has promoted 6% -8%.

(2) In the utility model, on one hand, noise of the fan of the energy storage motor cooling system in the operation process is reduced by arranging the silencing cotton and the screen plate in the first shell and the second shell; on the other hand, the sawtooth-shaped impeller blades are adopted, so that the noise generated by the relative movement of the impeller and the atmosphere in the working process is reduced; the fan of this application is at the working process, has reduced 10 decibels for conventional fan noise, is showing to have reduced the influence that the fan operation produced operational environment, is of value to operating workman's physical and mental health.

(3) The utility model discloses in, through vertically setting up two fans, reduced the area of equipment when satisfying energy storage motor cooling demand.

(4) The utility model discloses in, through installing the beaded finish on impeller one, strengthened the structural strength of impeller one, through set up short blade on impeller two, solve the efflux-wake structure that centrifugal fan blade afterbody produced because of the air current separation, improved the stability in two inside air current flow fields of fan.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:

FIG. 1 is a schematic structural diagram of a fan of a cooling system of an energy storage motor;

FIG. 2 is a side view of a fan of a cooling system of an energy storage motor;

FIG. 3 is a cross-sectional view of the first housing;

FIG. 4 is a cross-sectional view of the second housing;

FIG. 5 is a cross-sectional view of a first impeller;

FIG. 6 is a schematic structural diagram of a first impeller;

FIG. 7 is a cross-sectional view of impeller two;

fig. 8 is a schematic structural view of the second impeller.

The air conditioner comprises a fan I, a fan 11, an air inlet duct I, a fan 12, a shell I, a shell 13, an impeller I, a fan 14, a motor I, a motor 15, a reinforcing ring 16, a wide blade 17, a screen plate 18, silencing cotton 19, a flange I, a flange 2, a fan II, a fan 21, an air inlet duct II, a fan 22, a shell II, a fan 23, an impeller II, a fan 24, a motor II, a fan 25, a long blade 26, a short blade 27, a flange II, a flange 28, a metal hose 29, a short blade single piece 3 and a rack.

Detailed Description

The embodiments of the invention will be described in detail hereinafter with reference to the accompanying drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.

Referring to fig. 1 to 8, a fan of a cooling system of an energy storage motor is applied to cooling of the energy storage motor in the embodiment.

A fan of a cooling system of an energy storage motor comprises a first fan 1, a second fan 2 and a rack 3; referring to fig. 1, the first fan 1 and the second fan 2 are mounted on a frame 3;

referring to fig. 2 and 5, the fan i 1 comprises an air inlet duct i 11, a shell i 12, an impeller i 13 and a motor i 14; the air inlet duct I11 is arranged on the shell I12; the first impeller 13 is arranged inside the first shell 12; the first impeller 13 is connected with an output shaft of the first motor 14 and used for providing power for the first impeller 13; the first impeller 13 comprises a reinforcing ring 15 and wide blades 16 which are uniformly distributed along the circumference of the first impeller 13, and the axial length of the wide blades 16 along the first impeller 13 is 0.3-0.5 times of the diameter of the first impeller 13; the reinforcing ring 15 is connected with each wide blade 16 to provide high-flow cooling air, so as to cool the first motor of the energy storage motor, and the principle is as follows:

according to a fluid continuity equation, a direct ratio relation exists between the width of the gas outlet (namely the axial length of the blade along the impeller) and the gas flow, namely when other conditions are fixed, the larger the axial length of the blade along the impeller, the larger the generated gas flow, and the smaller the axial length of the blade along the impeller, the smaller the generated gas flow, and the specific relation is as follows:

where b represents the width of the flow outlet (i.e. the length of the vanes in the axial direction of the impeller), Q represents the flow rate, D represents the diameter of the impeller, τ represents the flow loss coefficient, c represents the linear speed of the impeller outlet, and c is related to the diameter and speed of rotation of the impeller.

Referring to fig. 2 and 8, the second fan 2 includes a second air inlet duct 21, a second casing 22, a second impeller 23 and a second motor 24; the second air inlet duct 21 is arranged on the second shell 22; the second impeller 23 is installed inside the second shell 22; the second impeller 23 is connected with an output shaft of the second motor 24 and used for providing power for the second impeller 23; the second impeller 23 comprises long blades 25 and short blade single pieces 29; the short blade single pieces 29 are uniformly distributed along the circumferential direction of the second impeller 23; the long blades 25 are arranged between the short blade single pieces 29 at regular intervals, each short blade single piece 29 comprises at least one short blade 26, and in the embodiment, each short blade single piece 29 comprises two short blades 26; the axial dimension of the long blade 25 and the short blade 26 along the second impeller 23 is 0.1-0.3 times of the diameter of the second impeller 23, so that the long blade 25 and the short blade 26 are narrow blades and are used for providing low-flow cooling air with a stable flow field, cooling of the second motor of the energy storage motor is achieved, and the principle is the same as that of the first fan 1.

Referring to fig. 5 and 7, the edge of the wide blade 16 close to the outer side of the first impeller 13 is serrated to reduce the noise of the first fan 1; the edges of the long blades 25 and the short blades 26 close to the outer side of the second impeller 23 are in a sawtooth shape, so that the noise of the second fan 2 is reduced.

Referring to fig. 5 and 6, the reinforcing ring 15 is welded in the middle of the wide blade 16 to improve the strength of the first impeller 13, the thickness and the inner and outer diameters of the reinforcing ring 15 directly affect the overall strength and aerodynamic performance of the impeller, the strength is insufficient when the thickness is too thin, and the flow of air flow is affected by too thick thickness, which causes flow loss. If the outer diameter of the reinforcing ring 15 is too large, the middle groove of the blade is deeper, the strength of the upper part and the lower part of the blade is insufficient, if the outer diameter is too small or the inner diameter is too large, the strength cannot be improved, if the inner diameter is too small, airflow is blocked by the reinforcing ring, the air inlet effect of the impeller is affected, the pneumatic performance of the fan is reduced, and the flow loss is increased, so that the thickness and the inner and outer diameters of the reinforcing ring 15 need to be determined after being optimized through pneumatic performance simulation and structural simulation.

With reference to fig. 8, the number of short blades 26 is twice that of the long blades 25; the length dimension of the short blades 26 along the radial direction of the second impeller 23 is smaller than that of the long blades 25 along the radial direction of the second impeller; the long blade 25 is spoon-shaped and is used for improving the acting effect of the second impeller 23; the section of the short blade 26 is arc-shaped, and the short blade 26 is arranged mainly for solving the jet flow-wake flow structure generated by the tail part of the centrifugal fan blade due to airflow separation. By adding the short blades 26 at the position in the impeller flow channel where boundary layer separation is easy to occur, the generation of boundary layer separation and flow separation can be effectively prevented, the wake flow area at the impeller outlet is damaged and reduced, the internal flow of the impeller is greatly improved, and the stability of the internal flow field of the second impeller 23 is improved. Because the position and length parameters of the short blades 26 have a large influence on the aerodynamic performance and noise of the fan, if the length of the blades is too short, the improvement effect on the airflow flow is not good, and if the length of the blades is too long, although the diversion is obvious, the airflow flow field is easy to generate local sudden change, so that the flow field is deteriorated, and the overall performance of the fan is reduced.

Referring to fig. 3 and 4, a gap between the mesh plate 17 and the casing 1 is provided with silencing cotton 18 for reducing noise generated when the fan 1 works; a screen plate 17 is arranged on the inner wall of the second shell 22; silencing cotton 18 is arranged in a gap between the screen 17 and the second shell 22 and used for reducing noise generated when the second fan 2 works.

Referring to fig. 1, the first fan 1 and the second fan 2 are volute type centrifugal fans, and the first housing 12 is in a volute type structure and is used for guiding airflow to an outlet of the first housing 12; the second housing 22 is of a volute structure and is used for guiding airflow to an outlet of the second housing 22.

Referring to fig. 1, the first fan 1 and the second fan 2 are installed along the longitudinal direction of the frame 3 to reduce the floor area of the device.

The first impeller 13 and the second impeller 23 are mounted on the frame 3 through a baffle, a lock washer and a nut, so that the first impeller 13 and the second impeller 23 are stably connected with the frame 3.

Referring to fig. 1 and 2, the inlet ends of the first air inlet duct 11 and the second air inlet duct 21 are connected with a metal hose 28, and the metal hose 28 is formed by bending stainless steel and is used for adjusting the air inlet position of the fan; the first shell 12 is provided with a first flange 19 for connecting an air outlet channel of the first fan 1 to a first motor of the energy storage motor; and a second flange 27 is arranged on the second shell 22 and used for connecting the second air outlet channel of the second fan 2 to a second motor of the energy storage motor.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fan of a cooling system of an energy storage motor is characterized by comprising a first fan (1), a second fan (2) and a rack (3); the first fan (1) and the second fan (2) are arranged on the rack (3);

the first fan (1) comprises a first air inlet duct (11), a first shell (12), a first impeller (13) and a first motor (14); the first air inlet duct (11) is arranged on the first shell (12); the first impeller (13) is connected with an output shaft of the first motor (14) and used for providing power for the first impeller (13); the impeller I (13) comprises a reinforcing ring (15) and wide blades (16) which are uniformly distributed along the circumference of the impeller I (13); the reinforcing ring (15) is connected with each wide blade (16) to provide high-flow cooling air;

the second fan (2) comprises a second air inlet duct (21), a second shell (22), a second impeller (23) and a second motor (24); the second air inlet duct (21) is arranged on the second shell (22); the second impeller (23) is connected with an output shaft of the second motor (24) and used for providing power for the second impeller (23); the second impeller (23) comprises long blades (25) and short blade single pieces (29); the short blade single pieces (29) are uniformly distributed along the circumferential direction of the second impeller (23); the long blades (25) are uniformly arranged between the short blade single pieces (29) at intervals, and each short blade single piece (29) comprises at least one short blade (26); to provide a low flow of cooling air.

2. The energy storage motor cooling system fan as claimed in claim 1, wherein the axial length of the wide blade (16) along the first impeller (13) is 0.3-0.5 times the diameter of the first impeller (13); the axial size of the long blades (25) and the short blades (26) along the second impeller (23) is 0.1-0.3 times of the diameter of the second impeller (23).

3. The fan for the cooling system of the energy storage motor as recited in claim 2, wherein the edge of the wide blade (16) close to the outer side of the first impeller (13) is serrated to reduce the noise of the first fan (1); the edges of the long blades (25) and the short blades (26) close to the outer side of the second impeller (23) are in a sawtooth shape, so that the noise of the second fan (2) is reduced.

4. The stored energy motor cooling system fan as recited in claim 1, characterized in that the reinforcement ring (15) is welded in the middle of the wide blade (16) to increase the strength of the first impeller (13).

5. An energy storage electric machine cooling system fan according to claim 1, characterized in that the number of short blades (26) is twice the number of long blades (25); the long blade (25) is spoon-shaped and is used for improving the acting effect of the second impeller (23); the section of the short blade (26) is arc-shaped, so that the stability of the flow field of the second impeller (23) is improved.

6. The fan for the cooling system of the energy storage motor as recited in claim 1, wherein a mesh plate (17) is installed on the inner wall of the first shell (12); silencing cotton (18) is arranged in a gap between the screen plate (17) and the shell I (12) and used for reducing noise generated when the fan I (1) works; a screen plate (17) is arranged on the inner wall of the second shell (22); and silencing cotton (18) is arranged in a gap between the screen plate (17) and the second shell (22) and used for reducing noise generated when the second fan (2) works.

7. The energy storage motor cooling system fan as claimed in claim 1, wherein the first fan (1) and the second fan (2) are volute type centrifugal fans; the first shell (12) is of a volute structure and is used for guiding airflow to an outlet of the first shell (12); the second shell (22) is of a volute structure and is used for guiding airflow to an outlet of the second shell (22).

8. The fan of the energy storage motor cooling system according to claim 1, wherein the first fan (1) and the second fan (2) are installed longitudinally along the frame (3) to reduce the floor space of the device.

9. The fan for the cooling system of the energy storage motor is characterized in that the first impeller (13) and the second impeller (23) are mounted on the frame (3) through a baffle plate, a check washer and a nut so as to enable the first impeller (13) and the second impeller (23) to be stably connected with the frame (3).

10. The fan of the energy storage motor cooling system according to claim 1, wherein the inlet ends of the first air inlet duct (11) and the second air inlet duct (21) are connected with a metal hose (28) for adjusting the air inlet position of the fan; the first shell (12) is provided with a first flange (19) for connecting an air outlet channel of the first fan (1); and a second flange (27) is arranged on the second shell (22) and is used for connecting an air outlet channel of the second fan (2).