Patent ID: 11965496
Assignee: nan
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  G  Y | IPC F  G

Claim 0:
1. A pump system comprising:
a fluid pump having a single pump input and a single pump output in fluid communication with a fluid flow circuit wherein said fluid flow circuit comprises:
an inlet port;
an input flow channel providing fluid communication from the inlet port to the pump input;
an output flow channel in fluid communication with the pump output;
a bypass flow orifice sized to restrict fluid flow in the output flow channel;
a bypass loop valve, wherein the output flow channel and bypass flow orifice provide a fluid path from the pump output to the bypass loop valve, and the bypass loop valve is disposed downstream from and in direct contact with the bypass flow orifice such that all fluid in direct contact with the bypass loop valve must pass through the bypass flow orifice prior to contacting any portion of the bypass loop valve;
a return channel disposed downstream from the bypass loop valve, wherein the return channel is connected to the input flow channel and forms a fluid pathway between the bypass loop valve and the input flow channel;
an outlet flow orifice;
an outlet branch connected to the output flow channel upstream from the bypass flow orifice to form a fluid passage between the output flow channel and the outlet flow orifice, wherein the outlet flow orifice sized to restrict fluid flow in the outlet branch;
an outlet branch valve, wherein the outlet branch and outlet flow orifice provide a fluid pathway from the pump output to the outlet branch valve, and the outlet branch valve is disposed downstream from and in direct contact with the outlet flow orifice;
an outlet port disposed downstream from the outlet branch valve; and
wherein there is no fluid connection between the bypass valve and any portion of the fluid flow circuit that is downstream of the outlet flow orifice such that the flow of fluid in the fluid flow circuit downstream of the outlet flow orifice is isolated from the flow of fluid in the return channel.