Pump for supplying cryogenic coolant

A pump for supplying a cryogenic liquid coolant, comprising:

• a housing having an inlet port for introducing a cryogenic liquid coolant, an outlet port for discharging the cryogenic liquid coolant introduced through the inlet port, and a chamber for connecting the inlet port and the outlet port;
• an impeller rotatably retained in the housing for introducing the cryogenic liquid coolant through the inlet port and discharging the same through the outlet port;
• and
• a vent hole formed at an outer surface of the housing for connecting the chamber with an outside of the housing so as to exhaust vapor generated from the cryogenic liquid coolant to the outside of the housing through the chamber.