High-efficiency energy-saving electric motor with internal shielding ventilation opening

Abstract

The invention relates to a high-efficiency energy-saving electric motor with an internal shielding ventilation opening. Multiple ventilation openings are processed on the rear end cap of the fan end of the electric motor. An internal shielding assembly can be embedded in the ventilation openings. Internal and external fans are coaxially installed inside and outside the rear end cap. The forced air cooling system of the overall electric motor is formed by motor fan covers, the internal and external fans and the rear end cap with the inlet and outlet ventilation openings. Compared with another patent technology named "high-efficiency energy-saving electric motor with forced inner circulation heat radiation", temperature rise of operation at full load is reduced for 10K on the basis that other parameters are unchanged or slightly enhanced.

Description

Technical field:

[0001] The invention relates to a high-efficiency energy-saving motor with an inner shielding vent. Background technique:

[0002] Modern general-purpose AC asynchronous motors, because the heat generated during operation is proportional to the power, in order to effectively dissipate the heat and reduce the overall temperature rise, the motors used in some relatively clean environments often adopt an open structure to solve the heat dissipation problem inside the motor , but the motors used in most occasions are generally not allowed to use open structures. Only the wind teeth stir the air in the space at both ends of the rotor to dissipate heat for the rotor. An external fan is installed at one end of the closed body to dissipate heat for the motor as a whole. Some large enclosed motors also have several ventilation holes processed on the main body of the rotor, relying on the centrifugal exhaust fan connected at one end, through the specially treated spac...

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