Compressor inlet valve
AssigneeJoy Manufacturing Company
InventorWilliam R. Seitz
Life of this patent
Estimating the term…
Abstract
A compressor having an inlet valve which includes a valve housing and a control tube having a portion adapted to be in communication with a source of fluid. A piston is normally spring biased away from a valve element which is adapted to be alternately placed in sealing contact with a valve seat and withdrawn from such contact. The piston and valve element are movably mounted on the exterior of the control tube. Orifices in the control tube are adapted to control movement of the piston against the bias of the spring and also to provide a modulating influence as well as additional pressure balancing characteristics. The valve is also adapted to function as a bypass valve, a check valve and a blowdown function.
Claims30
A compressor inlet valve comprising
- a valve housing,
- a control tube disposed at least partially within said housing and having a first portion adapted to be in communication with a source of fluid,
- valve element means disposed within said housing and mounted on said control tube for relative movement thereon,
- valve seat means disposed within said housing for cooperating with said valve element in opening and closing said valve,
- piston means disposed within said housing mounted on said control tube for relative movement thereon,
- said piston means being interposed between said control tube first portion and said valve element,
- main spring means for biasing said piston generally toward said control tube first portion, and
- first orifice means formed in said control tube adjacent to said piston, whereby at least a portion of the fluid introduced into said control tube first portion will emerge through said first orifice means and urge said piston to move against the bias of said main spring means in order to move said valve element to a closed position.
A compressor comprising
- a compression chamber,
- inlet means for receiving fluid to be compressed,
- outlet means for discharging compressed fluid from said compressor,
- an inlet valve operatively associated with said inlet means,
- a valve housing,
- a control tube disposed at least partially within said valve housing and having a first portion in communication with a source of fluid,
- valve element means disposed within said valve housing and mounted on said control tube for relative movement thereon,
- valve seat means disposed within said housing for cooperating with said valve element means in opening and closing said valve,
- piston means disposed within said housing mounted on said control tube for relative movement thereon,
- said piston means being interposed between said control tube first portion and said valve element,
- main spring means for biasing said piston towards said control tube first portion,
- first orifice means formed in said control tube adjacent to said piston, whereby at least part of the fluid introduced into said control tube first portion will emerge through said first orifice means and move said piston against the bias of said main spring means to urge said valve element to a closed position, and
- conduit means for introducing a portion of said compressed fluid into said control tube first portion.
Dependencies are inferred from the claim text.