Patent ID: 9115816
Filing Date: 2015-08-25
Classification: F16K,Y10T

Abstract:
1. A fluid flow bypass apparatus comprising: a housing adapted to be coupled to a structure having a fluid requiring cooling, the housing having inlet and outlet ports, the housing further having first and second passageways in communication with the inlet and outlet ports and a transverse passageway extending between the first and second passageways the first passageway extending from one inlet port to one outlet port and the second passageway extending towards another outlet port from another inlet port; a check valve disposed in the transverse passageway to insure one way flow of fluid through the transverse passageway between the first and second passageways; a valve disposed in one of the first and second passageways; a thermal actuator engageable with the valve to move the valve to a position blocking fluid flow through the one of the first and second passageways until sensing a predetermined fluid temperature; a valve seat disposed in a bore in the transverse passageway; a movable member disposed in the bore; a biasing member engaged with the movable member and acting to normally bias the movable member into engagement with the valve seat; the bore having a diameter substantially the same as an outer diameter of the movable body extending from the valve seat for a first distance defining a first zone for movement of the movable member away from the valve seat without substantial fluid flow through the first zone past the movable member; a second zone extending from the end of the first zone for a second distance defining a modulated flow zone where the movable member is biased away from contact with the valve seat by a volume of fluid flowing through the first zone into the second zone past the movable member, the second zone having an increasing cross-section through the second distance of the second zone.