Vent segment, ventilating duct using vent segment and motor using ventilating duct

A technology of ventilation grooves and ventilation grooves, which is applied in the field of heat dissipation structure of stator ventilation grooves of large and medium-sized motors. blocking effect
CN102497040AActive Publication Date: 2012-06-13DONGFANG ELECTRIC MACHINERY
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
DONGFANG ELECTRIC MACHINERY
Publication Date
2012-06-13

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Abstract

The invention, which belongs to the large-sized and medium-sized motor heat radiation technology field, discloses a vent segment, a ventilating duct using the vent segment and a motor using the ventilating duct. The vent segment comprises a vent segment main body; fins are arranged on the vent segment main body along a wind direction of a duct; the fins form included angles with the vent segment main body. According to the vent segment, the ventilating duct using the vent segment and the motor using the ventilating duct in the invention, fins are increased; therefore, a heat radiation area between flowing air and an iron core in a stator duct can be effectively increased; turbulence of cooling air flowing in the duct can be improved; and compared with an original ventilating duct structure, the provided ventilating duct structure enables a high heat transfer coefficient of the cooling air at a same flow velocity to be ensured, so that an objective that the temperature rise of a motor stator can be effectively reduced with given losses of the motor stator can be achieved.
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Description

technical field

[0001] The invention relates to a cooling system for large and medium-sized motor stators, in particular to a heat dissipation structure for large and medium-sized motor stator ventilation channels. Background technique

[0002] The stator duct of the hydro-generator is the main part of the heat exchange between the stator (core and coil) and the cooling medium. The ventilation slots on both sides of the duct play an important role in dissipating heat to the air. The quality of its structure is directly related to The effect of generator cooling is good or bad. The contact area of ​​the stator air duct with the cooling air and the flow state of the cooling air are the main factors affecting the cooling capacity of the stator. In this case, the existing conventional finless stator air duct structure is affected by the heat dissipation area and the cooling air flow state The cooling efficiency of the cooling air cannot be effectively improved, so the temperatu...

Claims

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