Electric pump

An electric pump comprising:

• a case;
• a motor that includes a rotor and a stator and is surrounded by the case;
• and
• a partition member that partitions the rotor and the stator,
• wherein
• the case includes an introduction pipe portion for introducing a fluid and a discharge pipe portion for discharging the fluid,
• the rotor is disposed in a space surrounded by the case, the stator, and the partition member and communicating with the introduction pipe portion and the discharge pipe portion,
• the rotor includes a first blade member, a second blade member, and a relay portion,
• an outer diameter of the relay portion is smaller than an outer diameter of at least one of the first and second blade members,
• the relay portion is positioned between the first blade member and the second blade member,
• each of the introduction pipe portion and the discharge pipe portion is located closer to the first blade member than to the second blade member,
• the space is sealed by the case and the partition member except at the introduction pipe portion and the discharge pipe portion, and
• the second blade member is surrounded by the partition member.