Retractable washing device
AssigneePratt & Whitney Canada Corp.
InventorRichard Ivakitch
Life of this patent
Estimating the term…
Abstract
A gas turbine engine having an engine core defining a core flow path delimited by an engine casing, a washing device having a spraying member defining a conduit in fluid communication with a source of washing fluid, the spraying member having a spraying section for outputting the washing fluid from the conduit, the spraying member movable relative to the engine casing from a retracted position in which the spraying section is flush with a surface of the engine casing defining said core flow path, and an expanded position in which the spraying section protrudes beyond the surface of the engine casing into the core flow path
Claims19
A gas turbine engine comprising an engine core defining a core flow path delimited by an engine casing extending annularly around a central axis, a washing device having a spraying member defining a conduit in fluid communication with a source of washing fluid, the spraying member having a spraying section for outputting the washing fluid from the conduit, the spraying member movable relative to the engine casing along a direction having a radial component relative to the central axis from a retracted position in which the spraying section is flush with a surface of the engine casing defining said core flow path, and an expanded position in which the spraying section protrudes beyond the surface of the engine casing into the core flow path.
A washing device for a gas turbine engine, comprising:
- a housing securable to a casing of the gas turbine engine and defining a cavity fluidly connectable to a source of washing fluid;
- a spraying member slidably received within the cavity of the housing and defining a conduit in fluid communication with the cavity for receiving the washing fluid, the spraying member having a spraying section for outputting the washing fluid from the conduit, the spraying member movable from a retracted position in which the spraying section is entirely contained within the cavity and an expanded position in which the spraying section protrudes outside the cavity;
- and a biasing member in engagement with both of the housing and the spraying member, the biasing member exerting a biasing force on the spraying member such that the spraying member is biased in the retracted position when the washing device is not in operation, the biasing force less than a fluid force exerted on the spraying member by a pressure of the washing fluid when the washing device is in operation.
Dependencies are inferred from the claim text.