CN214480140U

CN214480140U - Motor internal cooling structure for impeller reverse installation type fan

Info

Publication number: CN214480140U
Application number: CN202120636258.6U
Authority: CN
Inventors: 唐正宽; 唐坚梁
Original assignee: Zhejiang Ranxing Turbine Technology Co ltd
Current assignee: Zhejiang Ranxing Turbine Technology Co ltd
Priority date: 2021-03-29
Filing date: 2021-03-29
Publication date: 2021-10-22
Anticipated expiration: 2031-03-29

Abstract

The utility model discloses an impeller is anti-dress formula motor inside cooling structure for fan, including motor housing and compressor case, be equipped with rotor and stator among the motor housing, the compressor case sets up the front end department at motor housing, and the compressor case is equipped with the impeller, the utility model provides an impeller is anti-dress in the compressor case, impeller and a rotor side end connection. The method is characterized in that: both ends all are equipped with the end cover around motor housing, and the end cover is equipped with the gas pocket, and motor housing's inner wall department is equipped with the runner, and the runner setting is between motor housing and stator, and the runner sets up along motor housing's axial, and runner and gas hole intercommunication, compressor casing are equipped with the fan air inlet, and the gas pocket on the end cover of fan air inlet and motor housing front end is linked together, and compressor casing is equipped with the fan gas outlet. The utility model discloses can effectively promote heat dispersion and operating efficiency, have simple structure simultaneously, characteristics of dependable performance.

Description

Motor internal cooling structure for impeller reverse installation type fan

Technical Field

The utility model belongs to the technical field of the motor heat dissipation in the fan, concretely relates to impeller is motor internal cooling structure for anti-dress formula fan.

Background

A fan driven by a motor is a common ventilation and air blowing device, the motor is used as a power source of the fan, and the fan is easy to generate heat due to copper loss, iron loss, electromagnetic induction, bearing friction and the like of the motor in the use process. Generally, a fan motor which needs to work for a long time adopts a heat dissipation mode that heat dissipation ribs are arranged on a motor shell, and a fan is additionally arranged at the rear part of the motor to cool the motor shell so as to achieve the purpose of active heat dissipation.

The active heat dissipation cooling structure of the fan motor has the following three disadvantages: (1) the additional cooling fan needs to consume partial electric energy, and the overall operation efficiency of the fan is reduced. (2) The added heat radiation fan can only cool the surface of the motor but can not cool the internal stator, the rotor and other heating components, thereby causing low heat radiation efficiency and high motor temperature. Under the condition of high load, the magnetic steel is easy to demagnetize, the coil is burnt out, the bearing is easy to be blocked and the like. (3) The heat dissipation fan additionally arranged at the tail part of the motor cannot cool the bearing of the output shaft at the front part of the motor, and the front bearing far away from the fan is often a part with the highest temperature in the operation of the motor and also a part with the highest damage probability.

In the prior art, a cooling fan is omitted, and a cooling effect can be achieved, for example, chinese patent application No. 2019.12.25 discloses an invention named as a novel high-speed fan structure (application No. CN201911360307.1), in which an air outlet is arranged at one side of a fan volute, an air inlet is arranged at one side far away from the fan volute, air is fed from the rear end and enters the volute via a large-gap air path, and the air path provides timely and effective cooling for a rotor via the surface of a motor rotor. The fan is used for cooling the air path by depending on a stable mechanical structure, an additional cooling system is not required to be added, and the overall size of the fan is reduced, so that the device is compact in overall layout and easy to install and disassemble. However, in the above fan structure, air can only flow through the gap between the motor rotor and the motor stator, and the gap between the motor rotor and the motor stator is 1-10mm, which results in poor heat dissipation effect of the motor casing and low operation efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an above-mentioned technical problem who exists among the solution prior art provides impeller and turns over dress formula motor internal cooling structure for fan, can effectively promote heat dispersion and operating efficiency, has simple structure, characteristics of dependable performance simultaneously.

In order to solve the technical problem, the utility model discloses a following technical scheme:

impeller is anti-motor inside cooling structure for dress formula fan, including motor housing and compressor case, be equipped with rotor and stator among the motor housing, compressor case sets up the front end department at motor housing, and compressor case is equipped with the impeller, the utility model provides an impeller is anti-dress in compressor case, impeller and a rotor side end connection. The method is characterized in that: both ends all are equipped with the end cover around motor housing, and the end cover is equipped with the gas pocket, and motor housing's inner wall department is equipped with the runner, and the runner setting is between motor housing and stator, and the runner sets up along motor housing's axial, and runner and gas hole intercommunication, compressor casing are equipped with the fan air inlet, and the gas pocket on the end cover of fan air inlet and motor housing front end is linked together, and compressor casing is equipped with the fan gas outlet.

The utility model discloses an impeller of anti-dress in compressor case rotates, and outside air enters into the inside of motor via the gas pocket on the end cover of motor housing rear end, at first cools off the end cover and the bearing of motor housing rear end, and the runner of motor housing flows through again, flows through the gap between stator and the rotor simultaneously, can cool off stator, rotor and motor housing for inside more air current flows the motor, improve stator, rotor and motor housing's radiating effect. Then enters the air inlet of the fan through the air hole on the end cover at the front end of the motor shell and is finally discharged from the air outlet of the fan of the air compressor shell, so that the end cover and the bearing at the front end of the motor shell can be cooled. The utility model discloses original outside air directly gets into the traditional fan structure of air inlet has been changed, but utilize this part to be pull the air that flows by the negative pressure intensity earlier through the motor inside and take away the heat on each part and get into the fan air inlet again to the realization lasts, high-efficient and need not to consume the passive form heat dissipation of extra electric energy for the heat dissipation, can effectively promote heat dispersion and operating efficiency, has simple structure simultaneously, characteristics that the performance is reliable.

Further, the number of the runners is at least two, the runners are circumferentially and uniformly distributed on the outer side of the stator, the area of the runners is properly increased under the condition that the motor shell has enough strength, the air flow quantity is increased, and the heat dissipation effect is improved.

Further, the utility model discloses a preferred 12 of runner number can play fine radiating effect.

Furthermore, the cross-section of runner is the sector ring form, and the motor housing integrated into one piece of the runner and cylinder shape of being convenient for makes for inner wall thickness between two adjacent runners is the same, and the shape and the size of runner all keep the same, avoid motor housing inner wall to appear damaged.

Further, the quantity that sets up of gas pocket is at least two, and gas pocket circumference evenly sets up on the end cover, under the assurance end cover has sufficient intensity condition, suitably increases the area of gas pocket, increases the air current volume, improves the radiating effect.

Furthermore, the number of the air holes is 6, so that a good heat dissipation effect can be achieved.

Further, the cross-section of gas pocket is the sector ring form, and the gas pocket of being convenient for and end cover integrated into one piece make for inner wall thickness between two adjacent gas pockets is the same, and the shape and the size of gas pocket all keep the same, avoid the end cover inner wall to appear the damage.

The utility model discloses owing to adopted above-mentioned technical scheme, following beneficial effect has:

the utility model discloses an impeller of anti-dress in compressor case rotates, outside air enters into the inside of motor via the gas pocket on the end cover of motor housing rear end, at first cool off the end cover and the bearing of motor housing rear end, the runner of motor housing flows through again, the gap between stator and the rotor flows through simultaneously, can cool off the stator, rotor and motor housing, then the gas pocket on the end cover through the motor housing front end gets into the fan air inlet, discharge from the fan gas outlet of compressor case at last, can cool off the end cover and the bearing of motor housing front end. The utility model discloses original outside air directly gets into the traditional fan structure of air inlet has been changed, but utilize this part to be pull the air that flows by the negative pressure intensity earlier through the motor inside and take away the heat on each part and get into the fan air inlet again to the realization lasts, high-efficient and need not to consume the passive form heat dissipation of extra electric energy for the heat dissipation, can effectively promote heat dispersion and operating efficiency, has simple structure simultaneously, characteristics that the performance is reliable.

Drawings

The present invention will be further explained with reference to the accompanying drawings:

fig. 1 is a schematic structural view of an internal cooling structure of a motor for an impeller reverse-installation type fan according to the present invention;

fig. 2 is a schematic structural diagram of a motor housing according to the present invention;

FIG. 3 is a schematic view of the structure in the direction A of FIG. 2;

fig. 4 is a schematic structural diagram of the middle end cap of the present invention.

In the figure, 1-motor housing; 2-end cap; 3-a rotor; 4-a stator; 5-a flow channel; 6-a bearing; 7-a fan air inlet; 8-a compressor housing; 9-an impeller; 10-air outlet of the fan; 11-air holes.

Detailed Description

As shown in fig. 1 to 4, for the utility model discloses motor internal cooling structure for impeller reverse installation formula fan, including motor housing 1 and compressor case 8, be equipped with rotor 3 and stator 4 in the motor housing 1, there is the gap between rotor 4 and the stator 3. Compressor case 8 sets up the front end department at motor housing 1, and compressor case 8 is equipped with impeller 9, the utility model provides an impeller 9 is turned over and is adorned in compressor case 8, impeller 9 and 3 side end connection of rotor. A bearing 6 is arranged in the motor shell 1, and the rotor 3 is arranged on the bearing 6.

The front end and the rear end of the motor shell 1 are respectively provided with an end cover 2, the end covers 2 are provided with air holes 11, negative pressure lower than the atmospheric pressure can be generated at the air holes 11 on the end covers 2 at the rear end of the motor shell 1 under the rotation of the impeller 9, and external air is drawn by the negative pressure and then enters the motor. The inner wall of the motor shell 1 is provided with a flow channel 5, the flow channel 5 is used for cooling the inside of the motor, and therefore the flow channel 5 can also be called an inner cooling flow channel, the flow channel 5 is arranged between the motor shell 1 and the stator 4, the flow channel 5 is arranged along the axial direction of the motor shell 1, the flow channel 5 is communicated with an air hole 11, the air compressor shell 8 is provided with a fan air inlet 7, the fan air inlet 7 is communicated with the air hole 11 on the end cover 2 at the front end of the motor shell 1, and the air compressor shell 8 is provided with a fan air outlet 10.

The quantity that sets up of runner 5 is at least two, and 5 circumference evenly distributed of runner are in the outside department of stator 4, under the enough intensity circumstances of guaranteeing that motor housing 1 has, suitably increase runner 5's area, increase the air flow volume, improve the radiating effect. The utility model discloses a runner 5's number preferred is 12, can play fine radiating effect. The cross-section of runner 5 is the flabellum form, and the motor housing 1 integrated into one piece of the runner 5 and the cylindrical shape of being convenient for makes for inner wall thickness between two adjacent runners 5 is the same, and the shape and the size of runner 5 all keep the same, avoids motor housing 1 inner wall to appear damaged.

The quantity of setting up of gas pocket 11 is at least two, and gas pocket 11 circumference evenly sets up on end cover 2, under the assurance end cover 2 has sufficient intensity condition, suitably increases the area of gas pocket 11, increases the air current volume of flowing, improves the radiating effect. The number of the air holes 11 is 6, so that a good heat dissipation effect can be achieved. The cross-section of gas pocket 11 is the sector ring form, is convenient for gas pocket 11 and end cover 2 integrated into one piece manufacturing for inner wall thickness between two adjacent gas pockets 11 is the same, and the shape and the size of gas pocket 11 all keep the same, avoids end cover 2 inner wall to appear the damage.

The utility model discloses a turn over the impeller 9 of dress in compressor case 8 and rotate, outside air enters into the inside of motor via gas pocket 11 on the end cover 2 of motor housing 1 rear end, at first cool off the end cover 2 and the bearing 6 of motor housing 1 rear end, flow through the runner 5 of motor housing 1 again, flow through the gap between stator 4 and the rotor 3 simultaneously, can cool off stator 4, rotor 3 and motor housing 1, then gas pocket 11 on the end cover 2 through motor housing 1 front end gets into fan air inlet 7, discharge from fan gas outlet 10 of compressor case 8 at last, can cool off the end cover 2 and the bearing 6 of motor housing 1 front end. The utility model discloses original outside air directly gets into the traditional fan structure of air inlet has been changed, but utilize this part to be drawn the air that flows by the negative pressure and pass through the motor earlier and get into fan air inlet 7 again after taking away the heat on each part to the realization lasts, high-efficient and need not to consume the passive form heat dissipation of extra electric energy for the heat dissipation, can effectively promote heat dispersion and operating efficiency, has simple structure simultaneously, characteristics that the performance is reliable.

The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made on the basis of the present invention to solve the same technical problems and achieve the same technical effects are all covered by the protection scope of the present invention.

Claims

1. Inside cooling structure of motor for impeller anti-dress formula fan includes:

the motor comprises a motor shell, a stator and a rotor, wherein the motor shell is internally provided with the rotor and the stator;

the compressor shell is arranged at the front end of the motor shell and is provided with an impeller;

the method is characterized in that:

the motor casing all is equipped with the end cover in both ends around, the end cover is equipped with the gas pocket, motor casing's inner wall department is equipped with the runner, the runner sets up motor casing with between the stator, the runner along motor casing's axial setting, the runner with the gas pocket is linked together, compressor casing is equipped with the fan air inlet, the fan air inlet with motor casing front end on the end cover the gas pocket is linked together, compressor casing is equipped with the fan gas outlet.

2. The internal cooling structure of the motor for the impeller reverse-installation type fan according to claim 1, characterized in that: the number of the flow channels is at least two, and the flow channels are evenly distributed on the outer side of the stator in the circumferential direction.

3. The internal cooling structure of the motor for the impeller reverse-installation type fan according to claim 2, characterized in that: the number of the flow passages is 12.

4. The internal cooling structure of the motor for the impeller reverse-installation type fan according to claim 2, characterized in that: the cross section of the flow channel is in a sector ring shape.

5. The internal cooling structure of the motor for the impeller reverse-installation type fan according to claim 1, characterized in that: the number of the air holes is at least two, and the air holes are circumferentially and uniformly arranged on the end cover.

6. The structure of claim 5, wherein the cooling structure inside the motor for the impeller-reverse type fan comprises: the number of the air holes is 6.

7. The structure of claim 5, wherein the cooling structure inside the motor for the impeller-reverse type fan comprises: the section of the air hole is in the shape of a sector ring.