US 12,345,280 B2
Fluid system with multi-mode transfer valve
Jeffrey R. Rigali, South Windsor, CT (US); Christopher T. Koetsch, East Longmeadow, MA (US); Ryan P. Susca, Windsor, CT (US); David C. Kiely, West Springfield, MA (US); and Michael Voytovich, Madison, CT (US)
Assigned to RTX Corporation, Farmington, CT (US)
Filed by RTX Corporation, Farmington, CT (US)
Filed on Aug. 23, 2023, as Appl. No. 18/237,272.
Prior Publication US 2025/0067284 A1, Feb. 27, 2025
Int. Cl. F15B 13/043 (2006.01); F15B 21/02 (2006.01)
CPC F15B 13/043 (2013.01) [F15B 21/02 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A fluid system, comprising:
a first actuator;
a second actuator; and
a valve system including a first control valve, a second control valve and a transfer valve;
during a first mode of operation, the transfer valve configured to fluidly couple the first control valve to the first actuator and fluidly couple the second control valve to the second actuator, and the transfer valve further configured to fluidly decouple the first control valve from the second actuator and fluidly decouple the second control valve from the first actuator; and
during a second mode of operation, the transfer valve configured to fluidly couple the first control valve to the first actuator and the second actuator, and the transfer valve further configured to fluidly decouple the second control valve from the first actuator and the second actuator;
wherein a first station first passage in the transfer valve has a minimum flow area, and the first station first passage fluidly couples the first control valve to the first actuator during the first mode of operation; and
wherein a second station first passage in the transfer valve has a minimum flow area that is greater than the minimum flow area of the first station first passage, and the second station first passage fluidly couples the first control valve to the first actuator during the second mode of operation.
 
14. An operating method, comprising:
during a first mode, fluidly coupling a first control valve to a first actuator through a transfer valve, and fluidly coupling a second control valve to a second actuator through the transfer valve; and
during a second mode, fluidly coupling the first control valve to the first actuator and the second actuator through the transfer valve, and fluidly decoupling the second control valve from the second actuator;
wherein flow through the transfer valve from the first control valve to the first actuator is restricted during the first mode; and
wherein the flow through the transfer valve from the first control valve to the first actuator is unrestricted during the second mode.