초록 ▼

A cabin pressure control system for an aircraft in which the controller provides control signals to an outflow valve by way of a pneumatic amplifier relay means, has the memory or rate chamber of the controller providing the pneumatic signal to the relay instead of the usual case where the signal co

A cabin pressure control system for an aircraft in which the controller provides control signals to an outflow valve by way of a pneumatic amplifier relay means, has the memory or rate chamber of the controller providing the pneumatic signal to the relay instead of the usual case where the signal comes from the reference pressure chamber. Any one of several forms of relays may be used in this novel system. One form of relay includes a feedback signal from the outflow valve.

대표청구항 ▼

Control apparatus for a fluid pressurized compartment provided with fluid inlet and outlet means in which the outlet means includes an outflow valve means having a chamber controlling the flow of fluid from the pressurized compartment in response to fluid pressure manifested in the chamber in the ou

Control apparatus for a fluid pressurized compartment provided with fluid inlet and outlet means in which the outlet means includes an outflow valve means having a chamber controlling the flow of fluid from the pressurized compartment in response to fluid pressure manifested in the chamber in the outflow valve means, said control apparatus comprising: a. control housing means; b. means providing first and second chambers in said housing means; c. means defining a restricted passageway between said chambers; d. fluid source means coupled to one of said housing chambers; and e. pneumatic signal conduction means coupled between the other of said housing chambers and the chamber in the outflow valve means. The method of controlling the pressure in a fluid pressurized compartment having inlet and outlet passageway means for the supply and exhaust of fluid to and from said compartment by means of throughflow valve means disposed in one of said passageway means, and having a control means for adjusting said valve means to maintain a pressure schedule in said compartment, comprising: a. establishing first and second chambers in said control means with a restricted fluid flow passageway means therebetween; b. coupling sources of fluid to said second chamber with one of said sources at a higher pressure and another of said sources at a lower pressure than that of the fluid in said chamber; c. establishing a head chamber in said flow valve means having movable wall means adapted to move said valve means between fully open and fully closed positions to regulate the flow of fluid into and out of said compartment; d. disposing fluid conduit means between said first chamber and said head chamber; and e. disposing a pneumatic signal means in said conduit means to act on fluid pressure signals from said first chamber of said control means and to provide amplified fluid pressure signals to said head chamber.