When the motor converts energy, there is always a small part of the loss that is converted into heat. It must continuously dissipate the heat through the motor shell and the surrounding medium. This process of dissipating heat is called "cooling".
The motor cooling method code is mainly composed of the cooling method mark (IC), the cooling medium circuit layout code, the cooling medium code and the driving method code of the cooling medium movement.
IC circuit layout code Cooling medium code Pushing method code
The cooling method mark code is the English abbreviation of International Cooling, represented by IC.
The circuit layout code of the cooling medium is represented by characteristic numbers. We mainly use: 0, 4, 6, 8, etc.
Cooling medium circuit layout code
| Characteristic numbers | meaning | Brief description |
| 0 | The cooling medium flows freely into the motor from the surroundings or over the surface of the motor and returns freely. | free circulation |
| 1 | The cooling medium flows into the motor through the inlet pipe from a source other than the medium around the motor, and then flows freely into the surrounding environment. Inlet pipe or inlet tunnel circulation | Inlet pipe or inlet tunnel circulation |
| 2 | The cooling medium flows freely into the motor from the surroundings, and is then sent through the outlet pipe (hole) to a distance away from the medium surrounding the motor. | Outlet pipe (hole) circulation |
| 3 | The cooling medium flows into the motor from a source other than the medium around the motor through the inlet pipe, and then is sent to a distance away from the medium around the motor through the outlet pipe. | Import and export pipeline circulation |
| 4 | The primary cooling medium circulates in a closed circuit and dissipates heat through the casing surface to the surrounding medium. The casing surface can be smooth or ribbed, or it can be shrouded to improve heat transfer. | Chassis surface cooling (using ambient media) |
| 5 | The primary cooling medium circulates in a closed circuit and transfers heat to the surrounding medium through a built-in cooler integrated into the motor. | Built-in surface cooler (with ambient medium) |
| 6 | The primary cooling medium circulates in a closed circuit and transfers heat to the surrounding environment through an external cooler mounted on the motor. | External cooler (using ambient medium) |
| 7 | The primary cooling medium circulates in a closed circuit and transfers heat to the secondary cooling medium, which is not an ambient medium, via a built-in cooler integrated into the motor. | Built-in cooler (without ambient media) |
| 8 | The primary cooling medium circulates in a closed circuit and transfers heat to the remote medium through an external cooler mounted on the motor. | External cooler (using remote medium) |
| 9 | The primary cooling medium circulates in a closed circuit and transfers heat to the secondary cooling medium through a completely independently installed cooler. | Independently installed cooler |
The gas or liquid medium that transfers heat is called cooling medium.
Cooling medium code
| cooling medium | Feature code |
| Air | A |
| hydrogen | H |
| Nitrogen | N |
| carbon dioxide | C |
| water | W |
| Oil | U |
If the cooling medium is air, the letter A describing the cooling medium can be omitted. The cooling medium we use is basically air.
The cooling medium pushing method code is represented by characteristic numbers. We mainly use: 0, 1, 6, 7, etc.
Cooling medium push method
| Characteristic numbers | meaning | Brief description |
| 0 | The movement of the cooling medium depends on the temperature difference, and the role of the rotor fan is ly weak. | free convection |
| 1 | The movement of the cooling medium relies on the fan action of the rotor or a fan mounted directly on the rotor shaft. | Self-looping |
| 2 | The movement of the cooling medium relies on the action of integral components that are not mounted directly on the rotor shaft, such as an internal fan driven by gears or tapes. | Integrated non-independent transmission cycle |
| 3 | The circulation of the cooling medium relies on electric or motorized intermediate parts on the motor. For example, a fan driven by a motor powered by the host's wire end. | Cycle of dependent components mounted on the motor |
| 4 | spare | |
| 5 | The movement of the cooling medium relies on integral components that are independent of the host power. For example, the internal fan is driven by an electric motor. The electric motor and the main unit have different power sources. | Packaged independent component circulation |
| 6 | The media movement is driven by an independent component installed on the motor. The power required by this component has nothing to do with the host speed, such as a backpack fan or fan. | External independent component driver |
| 7 | Independent electrical or mechanical components installed separately from the motor drive the movement of the cooling medium, or rely on the pressure in the cooling medium circulation system to drive the movement of the cooling medium. | Separate independent component driver |
| 8 | The movement of the cooling medium relies on the relative movement of the motor in the cooling medium. | cycle by relative motion |
| 9 | circulated by other components. | |
There are two types of marking of cooling method codes: simplified notation and complete notation. We should give priority to the simplified notation. The characteristics of the simplified notation are: if the cooling medium is air, then A represents the cooling medium code, which can be omitted in the simplified notation; If the cooling medium is water and the pushing mode is 7, then the number 7 can be omitted in the simplified mark.
The more commonly used cooling methods are: IC01, IC06, IC411, IC416, IC611, IC81W, etc.
for example:
The complete notation of IC411 is IC4A1A1
"IC" is the code name of the cooling method.
"4" is the cooling medium circuit layout code (casing surface cooling)
"A" is the cooling medium code (air)
"1" is the primary cooling medium promotion method code (self-circulation)
The second "1" is the secondary cooling medium push method code (self-circulation)
Example description:
Jinyi permanent magnet synchronous motors, explosion-proof permanent magnet synchronous motors, high-efficiency asynchronous motors, etc. ly use the IC411 cooling method, and the IC416 cooling method can also be used.
Most of Jinyi variable frequency asynchronous motors, metallurgical special variable frequency motors, etc. use the IC416 cooling method.
Jinyi servo permanent magnet synchronous motors, servo variable frequency motors, etc., have an IP54 closed structure and ly use the IC416 cooling method. IP23 open structures ly use the IC06 cooling method.
Jinyi water-cooled permanent magnet synchronous motor adopts IC86W cooling method, or IC81W (air-water cooling) cooling method.
Jinyi drive permanent magnet synchronous motor adopts IC416 (with drive fan) cooling method.
Jinyi high-speed permanent magnet synchronous motor adopts IC71W cooling method.
Of course, no matter which motor is used, the cooling method can be "customized" according to customer needs and equipment usage.
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