Brushless coolant pump and cooling system

A liquid pump comprising:

• a housing;
• a stator with plurality of stator windings received in the housing;
• a magnetic rotor received in the stator between the stator windings and with an annular space between the rotor and stator;
• a pumping assembly received in the housing and constructed and arranged to draw fluid therein and to discharge the fluid therefrom under pressure, the rotor being operably connected with the pumping assembly to drive it;
• and
• an electronic control circuit electrically connected to the stator windings and responsive to an electric current to selectively sequentially energize the stator windings and create a rotating magnetic field whereby the rotating magnetic field causes the rotor to rotate and drive the pumping assembly and the fluid discharged under pressure flows through the annular space in direct contact with both the rotor and stator and over the control circuit and in contact therewith.

A liquid pump comprising:

• a housing;
• a stator with a plurality of stator windings received in the housing;
• a magnetic rotor received in the stator between the stator windings;
• a pumping assembly received in the housing and constructed and arranged to draw fluid therein and to discharge the fluid therefrom under pressure, the rotor being operably connected with the pumping assembly to drive it;
• an electronic control circuit electrically to the stator windings and responsive to an electric current to selectively sequentially energize the stator windings and create a rotating magnetic field whereby the rotating magnetic field causes the rotor to rotate and drive the pumping assembly and the rotor, stator and control circuit are each in contact with the fluid in the housing;
• and
• wherein the fluid is dielectric fluid and the control circuit is uncoated and is in direct contact with the dielectric fluid.