US 12,228,151 B2
Solenoid driven actuator
Ryan Susca, Windsor, CT (US); Morgan O'Rorke, West Hartford, CT (US); and Todd Haugsjaahabink, Springfield, MA (US)
Assigned to hamilton sundstrand corporation, Charlotte, NC (US)
Filed by Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed on Oct. 13, 2021, as Appl. No. 17/450,800.
Prior Publication US 2023/0111165 A1, Apr. 13, 2023
Int. Cl. F15B 13/04 (2006.01); F15B 13/043 (2006.01); F15B 13/044 (2006.01); F16K 11/07 (2006.01)
CPC F15B 13/0402 (2013.01) [F15B 13/0431 (2013.01); F15B 13/044 (2013.01); F16K 11/07 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A system comprising:
an actuator comprising:
an actuator housing;
a first chamber within the actuator housing fluidically;
a second chamber within the actuator housing;
a cylinder within the housing and between the first chamber and the second chamber; and
a rod attached to the cylinder;
a supply pressure source;
a return pressure source;
a pilot valve comprising:
a pilot valve housing;
a supply port fluidically connected to the supply pressure source;
a return port fluidically connected to the return pressure source;
a first actuator port fluidically connected to the first chamber of the actuator;
a second actuator port fluidically connected to the second chamber of the actuator;
a valve block within the pilot valve housing, wherein the valve block comprises:
a first window fluidically connecting the supply port and the first actuator port when the pilot valve is in a first position;
a second window fluidically connecting the return port and the second actuator port when the pilot valve is in the first position;
a third window fluidically connecting the supply port and the second actuator port when the pilot valve is in a second position; and
a fourth window fluidically connecting the return port and the second actuator port when the pilot valve is in the second position;
a control chamber within the pilot valve housing;
a spring chamber within the pilot valve housing, wherein the valve block is between the control chamber and the spring chamber, and wherein the spring chamber is fluidically connected directly to the return pressure source; and
a spring within the spring chamber;
a selector valve comprising:
a selector valve housing:
a first port;
a second port; and
a third port fluidically connected to the control chamber of the pilot valve;
a primary chamber within the selector valve housing;
a secondary chamber within the selector valve housing;
a selector valve block within the selector valve housing and between the primary chamber and the secondary chamber; and
a second spring within the primary chamber;
a primary solenoid valve comprising:
a first port fluidically connected to the supply pressure source;
a second port fluidically connected to both the first port of the selector valve and to the primary chamber of the selector valve; and
a third port fluidically connected to the return pressure source; and
a secondary solenoid valve, wherein the secondary solenoid valve comprises:
a first port fluidically connected to the supply pressure source;
a second port fluidically connected to both the second port of the selector valve and to the secondary chamber of the selector valve; and
a third port fluidically connected to return pressure source.