Air-cooling system for vertical rotary electric machines, dedicated ventilation box, and corresponding vertical rotary electric machine
The present invention relates to an air-cooling system for vertical rotary electric machines ( 200 ) comprising a one-piece, modular ventilation box ( 100 ) arranged separately and outside the vertical rotary electric machine ( 200 ) to form an upward-flow cooling circuit therewith, in which the internal space thereof is divided into an intake region ( 101 ) and an exhaust region ( 102 ). The intake region ( 101 ) comprises an air intake ( 111 ), at least one intake screen ( 113 ) and at least one intake opening ( 161 ), and the exhaust region ( 102 ) comprises at least one exhaust opening ( 162 ), at least one exhaust screen ( 153 ) and at least one air outlet ( 151 ). The present invention also relates to a ventilation box ( 100 ) dedicated to cooling, and to a corresponding vertical rotary electric machine ( 200 ).
1 . An air-cooling system for vertical rotary electric machines, the air-cooling system comprising:
a one-piece, modular ventilation box arranged separately and outside a vertical rotary electric machine to form a cooling circuit in an internal space of the modular ventilation box and an internal space of the vertical rotary electric machine,
wherein the internal space of the one-piece, modular ventilation box is divided into an intake region and an exhaust region,
wherein the intake region comprises an air intake, an intake screen and an intake opening,
wherein the exhaust region comprises an exhaust opening, an exhaust screen and an air outlet,
wherein the intake region and the exhaust region are separated by an intermediate wall,
wherein the vertical rotary electric machine includes a rotor and a stator,
wherein the cooling circuit is configured to direct airflow from the intake opening, through the internal space of the vertical rotary electric machine, and towards the exhaust opening, with at least one change of direction within the internal space of the rotary electric machine, and
wherein the airflow that passes through a space between the rotor and the stator is an upward flow.
2 . The system according to claim 1 , wherein the intake screen forms an acute angle (α) with a lower wall of the ventilation box.
3 . The system according to claim 1 , wherein the exhaust screen is adjacent to a distal wall of the ventilation box, and wherein the exhaust screen and the distal wall define an acute angle (β).
4 . The system according to claim 1 , wherein the exhaust region can be coated with a noise-dampening material.
5 . The system according to claim 1 , wherein a sloped upper end of the intake screen defines an intake passage distance with respect to a distal wall of the one-piece, modular ventilation box and an intake passage height with respect to the intermediate wall of the one-piece, modular ventilation box.
6 . The system according to claim 1 , wherein a sloped upper end of the exhaust screen defines an exhaust passage width with respect to a side wall of the one-piece, modular ventilation box and an exhaust passage distance with respect to a distal wall of the one-piece, modular ventilation box.
7 . The system of claim 1 , wherein the ventilation box has an inverted circuit and particle retention and noise-dampening means for a vertical rotary electric machine.
8 . A rotary electric machine comprising the air-cooling system of claim 1 .