Fan for rotating electrical machine
OwnerJianguang Tang, Peter Yanginventors
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Abstract
A fan for a rotating electrical machine is disclosed. The fan comprises a plurality of fan blades and a flow separator for separating a first airflow entering the fan from a radially outwards part of the rotating electrical machine and second airflow entering the fan from a radially inwards part of the rotating electrical machine. The flow separator extends partway through the fan in a direction of airflow. This may help to improve the efficiency of the fan using a relatively simple construction and without adding to its length.
Claims20
A fan for a rotating electrical machine, the fan comprising:
- a plurality of fan blades;
- and
- a flow separator arranged to separate a first airflow entering the fan from a radially outwards part of the rotating electrical machine and second airflow entering the fan from a radially inwards part of the rotating electrical machine,
- wherein the flow separator extends partway through the fan blades in a direction of airflow.
A rotating electrical machine comprising a stator, a rotor and a fan, the fan comprising:
- a plurality of fan blades;
- and
- a flow separator arranged to separate a first airflow entering the fan from a radially outwards part of the rotating electrical machine and second airflow entering the fan from a radially inwards part of the rotating electrical machine,
- wherein the flow separator extends partway through the fan blades in a direction of airflow.
A method of cooling a rotating electrical machine using a fan, the fan comprising a plurality of fan blades and a flow separator, the method comprising:
- drawing airflow through the machine using the fan;
- and
- separating airflow entering the fan from a radially outwards part of the rotating electrical machine from airflow entering the machine from a radially inwards part of the rotating electrical machine using a flow separator, the flow separator extending partway through the fan blades in a direction of airflow.
Dependencies are inferred from the claim text.