Electric machine
View Patent ↗The electric machine has a casing housing a stator and a rotor and containing a gas, and a dryer for the gas. The dryer is connected to the casing. The dryer includes a separation group, for separating humidity from the gas, a water accumulator, for at least temporally accumulating water discharged from the separation group, at least a detector for the water contained in the water accumulator.
1. An electric machine comprising:
a casing housing a stator, a rotor, and a gas; and
a dryer connected to the casing and operable for drying the gas, the dryer including
a separation group operable for separating humidity from the gas including a heat exchanger and a float valve downstream of the heat exchanger,
a water accumulator operable for at least temporally accumulating water discharged from the separation group, and
at least a detector operable for detecting the water accumulated in the water accumulator.
2. The electric machine according to claim 1 , wherein the water accumulator includes a siphon.
3. The electric machine according to claim 1 , further comprising a closing valve downstream of the water accumulator.
4. The electric machine according to claim 1 , further comprising a gas trap downstream of the water accumulator.
5. The electric machine according to claim 1 , wherein the detector includes an optic, acoustic, mechanical or electric detector.
6. The electric machine according to claim 3 , further comprising a gas trap downstream of the closing valve.
7. The electric machine according to claim 1 , wherein a pressure differential in the casing circulates the gas through the dryer.
8. The electric machine according to claim 1 , wherein downstream of the heat exchanger, the separation group includes a water separator.
9. The electric machine according to claim 1 , wherein an input line of the dryer is connected to a high pressure zone within the casing and an output line of the dryer is connected to a low pressure zone within the casing.
10. The electric machine according to claim 1 , wherein the separation group includes a water line and a venting line connected to the float valve.
11. A dryer for an electric machine comprising:
a separation group operable for separating humidity from a gas including a heat exchanger and a float valve downstream of the heat exchanger;
a water accumulator operable for at least temporally accumulating water discharged from the separation group; and
at least a detector operable for detecting the water accumulated in the water accumulator.
12. The dryer according to claim 11 , wherein the water accumulator includes a siphon.
13. A method for retrofitting an electric machine comprising:
providing the electric machine including a casing housing, a stator, a rotor, and
a dryer connected to the casing;
disconnecting the dryer from the casing;
connecting a new dryer to the casing, wherein the new dryer includes:
a separation group operable for separating humidity from a gas including a heat exchanger and a float valve downstream of the heat exchanger,
a water accumulator operable for at least temporally accumulating water discharged from the separation group, and
at least a detector operable for detecting the water accumulated in the water accumulator.
14. The method according to claim 13 , wherein the water accumulator includes a siphon.