Motor cooling method

Our common motor cooling methods are: natural cooling, forced air cooling, air-air cooling, air-water cooling, water cooling, IC411, IC416, IC816, etc. What is the meaning of its characterization and how to understand it, see the following explanation.

The motor cooling medium content regulations:

· Primary cooling medium: a gas or liquid medium whose temperature is lower than that of a certain part of the motor. It contacts the part of the motor and takes away the heat released by it;

· Secondary cooling medium: A gas or liquid whose temperature is lower than that of the primary cooling medium. The heat released by the primary cooling medium is taken away through the appearance of the motor or the cooler.

The content requirements of the motor cooling method code:

The motor cooling method code is mainly composed of:

· Cooling method mark IC (International Cooling);

· Cooling medium circuit layout code;

· Cooling medium code;

· The code composition of the driving method of the cooling medium.

IC+cooling medium circuit layout code+cooling medium code+cooling medium pushing method code

1. The meaning of the cooling medium circuit layout code:

Code Meaning Remarks

0 The cooling medium directly exchanges heat from the surrounding medium, free circulation

4 The primary cooling medium circulates in the closed circuit in the motor, and transfers heat to the surrounding environment through the surface of the casing. The surface of the casing can be

         So it is smooth or ribbed, and it can also be equipped with a cover to improve the heat transfer effect. The surface of the casing is cooled.

6 The primary cooling medium circulates in the closed circuit and transfers heat to the surrounding environment through the external cooler mounted on the motor

                                                                                                         External cooler (using ambient medium)

8 The primary cooling medium circulates in the closed circuit and transfers heat to the remote medium through the external cooler mounted on the motor

                                                                                                         External cooler (using remote cooling medium)

2. The meaning of the cooling medium code:

Cooling medium feature code

Air A

Hydrogen H

Nitrogen N

Carbon dioxide C

Water W

Oil U

3. How to push the cooling medium:

Characteristic number Meaning Remarks

0 Relying on the temperature difference to promote the movement of the cooling medium, free convection

1 The cooling medium movement is related to the motor speed. Self-circulation

6 The media is driven by an independent drive component installed on the motor. The power required by this component has nothing to do with the speed of the host.

                                                                           External independent component drive

7 Independent electrical or mechanical components installed separately from the motor drive the movement of the cooling medium

                                                                           Separate independent component drive

4. The more commonly used cooling methods are: IC01, IC06, IC411, IC416, IC81W

---IC411, which means internal circulation air cooling, external circulation air cooling, free circulation cooling, often means that the motor installation is the same

Shaft cooling fan;

---IC416, which means internal circulation air cooling, external circulation air cooling, forced air cooling;

---IC81W, which means internal circulation air cooling, external circulation water cooling, which is what we often call air-water cooling.

5. Advantages and disadvantages of IC416 (forced air cooling) cooling method:

Advantages: simple structure, convenient maintenance, stable and reliable operation, small installation size;

Disadvantages: low cooling efficiency, high noise in motor operation;

6. Advantages and disadvantages of IC81W (water cooling) cooling method:

Advantages: high cooling efficiency, low operating noise;

Disadvantages: complex structure, complicated maintenance (need to connect an external deionization circulating waterway), due to the rust of the waterway, causing hidden dangers such as partial blockage, short circuit, leakage and other faults.