Two pump design with coplanar interface surface

A pump apparatus comprising:

• a fluid-exchanging component of a fluid transfer system, the fluid-exchanging component including a first interface surface;
• a second component including a second interface surface;
• and
• the first and second interface surfaces combining to define at least one pump cavity and a planar interface groove supporting a seal ring that extends around the at least one pump cavity to prevent leakage of fluid from the pump cavity;
• the fluid-exchanging component including a pump impeller in the at least one pump cavity and at least one motor driving the at least one pump impeller;
• one or both of the fluid-exchanging component and the second component also defining a fluid inlet to and a fluid outlet from the at least one pump cavity.

A method of connecting two pumps to a fluid transfer system comprising steps of:

• providing a first component in a fluid heat transfer system, the first component including a first planar interface surface;
• and
• providing a second component including a second planar interface surface;
• attaching the second component to the first component with the first and second planar interface surfaces combining to define two pump cavities and define a planar interface groove supporting a seal ring that extends around the two pump cavities to prevent leakage of fluid from the pump cavities;
• providing a pump impeller in each of the two pump cavities and including a motor driving each of the pump impellers;
• and with one or both of the first component and the second component also defining a fluid inlet to and a fluid outlet from each of the pump cavities;
• and
• operating each of the pump impellers to motivate fluid into each of the fluid inlets and out each of the fluid outlets.

A multi-pump apparatus comprising:

• a first component including a first interface surface;
• and
• a pumping component including a second interface surface,
• the first and second interface surfaces combining to define first and second pump cavities and a planar interface groove supporting a continuous-loop seal ring that extends around the first and second pump cavities to prevent leakage of fluid outside of an area defined by the first and second pump cavities;
• the pumping component including first and second pump impellers in the first and second pump cavities, and including first and second motors driving the first and second pump impellers, respectively;
• one or both of the pumping component and the first component also defining a fluid inlet to and a fluid outlet from the first and second pump cavities;
• and
• an on-board control circuit board attached to the pumping component and electrically connected to the first and second motors for controlling independent operation of the first and second motors and hence controlling independent operation of the first and second impellers in the first and second cavities, respectively.