Patent ID: 9115634
Filing Date: 2015-08-25
Classification: F01P,F04D

Abstract:
1. A fail-safe rotary actuator for a coolant circuit, comprising: a pump for circulating a coolant within the coolant circuit; a rotary-slide housing having a plurality of housing pass-through openings which are fluidly connected to a sub-circuit of the coolant circuit, the sub-circuit having a radiator, an inlet line, and an outlet line, the plurality of housing pass-through openings including 1) an opening that accepts fluid form the inlet line, 2) an opening that accepts fluid from the outlet line, and 3) an opening that delivers fluid to the pump; at least one rotary slide valve having at least one rotary slide pass-through opening and supported in the rotary-slide housing for rotation to enable at least partial coincidence of the housing pass-through openings with the rotary slide pass-through opening; and a thermostat valve adapted to open a flow path running parallel to the rotary slide from the outlet line directly to the pump, when a temperature limit of the coolant in the inlet line is exceeded as detected by an expansion member of said thermostat valve, said expansion member in communication with the coolant in the inlet line by extending into the inlet line.