CN202550740U

CN202550740U - Fan-free motor cooling structure

Info

Publication number: CN202550740U
Application number: CN201220164068XU
Authority: CN
Inventors: 毕刘新; 张超; 杨平西; 杨帆; 陈琳; 李姗
Original assignee: 704th Research Institute of CSIC
Current assignee: Shanghai Csic Ship Propulsion Equipment Co Ltd
Priority date: 2012-04-18
Filing date: 2012-04-18
Publication date: 2012-11-21
Anticipated expiration: 2022-04-18

Abstract

The utility model relates to a fan-free motor cooling structure. A plurality of incline axial venting holes are arranged in a rotor, a water jacket is sleeved outside a stator, and an air sleeve is sleeved outside the water jacket. The water jacket is of an annular or S structure and is provided with a water inlet and a water outlet, a cooling sheet is arranged inside the air jacket and is matched and connected with the outer wall of the water jacket, and the inner wall of the water jacket is matched and connected with a motor stator. When a fan-free structure is at high speed, the noise and the vibration are lowered, and the reliability of a mechanical structure is improved, thus the fan-free motor cooling structure is very suitable for the field of high-speed motors; and by using a loop of an air path and matching with the traditional water jacket cooling structure, two times of cooling contact area can be increased, thus the ventilating cooling effect is greatly improved. According to the utility model, a centrifugal force of the rotor during rotating is adopted for replacing pressure of internally circulating air provided by the fan, so that the problems of noise and vibration caused by the fan at high speed are solved; and in addition, an air jacket structure is additionally provided, while an internal air circulating loop is provided, the heat exchange area is increased, and the cooling effect of the motor is improved.

Description

The motor cooling structure of no fan

Technical field

The utility model patent relates to a kind of motor cooling structure, especially a kind of cooling structure that is suitable for the high speed high power density motor.

Background technology

Motor adopts aerofoil fan or centrifugal fan to produce inner blast mostly at present, realizes inner coolant circulation; But when motor was high-speed electric expreess locomotive, the noise of fan, vibration and intensity became the bottleneck of high-speed electric expreess locomotive design.

The tradition settling mode is to adopt outside blower fan that blast is provided, but this will increase extra accessory motor and power supply unit, increase the complexity of system.

Summary of the invention

The utility model is that a kind of motor cooling structure that does not have fan will be provided, and is used in the cooling technology problem that solves high-speed electric expreess locomotive, and this structure has been cancelled traditional fan, and the centrifugal force that utilizes the rotor rotation to produce provides blast, realizes inner wind circulation.

For realizing above-mentioned purpose, the technical scheme of the utility model is: a kind of motor cooling structure that does not have fan, comprise rotor, and stator is characterized in: have the axial ventilation hole of some inclinations in the rotor, the stator outside is with water jacket, and the water jacket outside is with the wind cover.

Water jacket is annular or S type structure, which is provided with entery and delivery port; Wind cover inside is provided with cooling fin, and cooling fin and water-jacket outer wall are connected; Water jacket inwall and motor stator are connected.

The beneficial effect of the utility model is:

The rotor of the utility model has the axial ventilation hole of inclination, when rotor rotates, because the existence of centrifugal force; Can produce blast between two ends of rotor; The circulation of promotion inner air when air is flowed through stator end, can effectively be cooled off the end; Air passes through the wind cover of water jacket outside then, realizes the closed-loop path.Wherein: the wind cover has two effects:

(1) loop that provides inner air to circulate.

(2) can install air/water cooler additional in the wind cover, increase heat exchange area, thereby improve the cooling effect of motor.

Install water jacket additional between stator outside and the wind cover in addition, this water jacket is traditional jacket structure for water, and different is that air/water cooler and water jacket integrated design in the wind cover can shared cooling waters.

The utility model is compared traditional fan structure and jacket structure for water, has the following advantages:

1) compare traditional motor shaft fan, no fan structure has not only reduced noise, vibration when high speed, improved the reliability of mechanical structure simultaneously, therefore is fit to very much the high-speed electric expreess locomotive field;

2) utilize the loop of wind path, cooperate traditional water jacket cooling structure, can increase the cooling contact area of twice, improved the ventilation cooling effect greatly.

Centrifugal force when the utility model adopts the rotor rotation replaces fan that the blast of inner loop is provided, and has solved noise and the vibration problem of descending fan to bring at a high speed; Increase this structure of wind cover in addition, when the inner air circulation circuit is provided, increased heat exchange area, improved the cooling effect of motor.

Description of drawings

Fig. 1 is the structure cutaway view of the utility model;

Fig. 2 is the left cutaway view of Fig. 1.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Like Fig. 1, shown in 2, the high efficiency motor cooling structure of the no fan of the utility model comprises rotor 1, stator 7, water jacket 3, wind cover 5 etc.

Rotor 1 has the axial ventilation hole 2 of inclination, and stator 7 outsides are with water jacket 3, and water jacket is loop configuration or S type structure; Have entery and delivery port 4 on it, water jacket 3 outsides are wind covers 5, both shared walls; Wind overlaps 5 inside and installs cooling fin etc. additional, so that increase area of dissipation.Wind overlaps 5 inside and is provided with cooling fin, and cooling fin and water jacket 3 outer walls are connected; Water jacket 3 inwalls and motor stator are connected.

When rotor 1 rotation, can produce blast at two ends, blast drives hot-air and flows through rotor ventilation hole 2; Through behind the stator end 6 cooling stator ends, get into stator wind cover 5 then, wind overlaps 5 inside and has cooling fin; Cooling fin is fixed on the shared wall; Can the heat of hot blast be passed on the wall through cooling fin, and then pass to the cooling water of water jacket 3 inside, a part of in addition heat spreads out of motor through the outer wall of wind cover 5.

In addition; In order better to increase cooling effect, install water jacket 3 additional between wind cover 5 and the stator 7, water jacket 3 inwalls cooperate with motor stator 7 direct hot jackets; The heat major part of stator core and stator winding is passed to water jacket 3 through stator 7 outer walls through heat conduction, through external refrigeration water heat is taken away then.

Claims

1. motor cooling structure that does not have fan; Comprise rotor (1), stator (7) is characterized in that: the axial ventilation hole (2) that has some inclinations in the said rotor (1); Stator (7) outside is with water jacket (3), and water jacket (3) outside is with wind cover (5).

2. the motor cooling structure of no fan according to claim 1 is characterized in that: said water jacket (3) is annular or S type structure, which is provided with entery and delivery port (4).

3. the motor cooling structure of no fan according to claim 1, it is characterized in that: said wind cover (5) inside is provided with cooling fin, and cooling fin and water jacket (3) outer wall are connected.

4. the motor cooling structure of no fan according to claim 1, it is characterized in that: said water jacket (3) inwall and motor stator (7) are connected.