Rotary ram-in compressor

Abstract

A rotary ram-in compressor, used for pressurizing a gas into a container, comprising: a stationary casing having at least one inlet passage, and a receiver; at least one conduit for communicating the receiver with the container; a drive shaft supported for rotation in a given direction inside the casing; and a rotor assembly housed inside the casing and including at least one rotary ram-in compressor stage. In operation, gas is rammed through the feeding channels of the rotary ram-in compressor to the compressor's receiver, from which it flows through the conduit to the container, wherein it collects. In preferred embodiments, valve means for controlling the flow of gas through the conduit, and a pressure sensor(s) for detecting the degree of rise in the pressure of gas supplied by the rotary ram-in compressor, are also provided.

1 . A rotary ram-in compressor, used for pressurizing a gas into a container, said rotary ram-in compressor comprising: 
 a stationary casing having at least one inlet passage for admission of the gas, and a receiver;    at least one conduit for communicating the said receiver with the said container;    a drive shaft supported for rotation in a given direction inside the casing by an arrangement of bearings, and extending to a drive receiving end located outside the casing; and    a rotor assembly housed inside the casing and including a first disk secured for rotation with the drive shaft and lying in a first plane transverse to the rotational axis of the drive shaft; a second disk lying in a second plane transverse to the rotational axis of the drive shaft, with the inner surfaces of the two disks defining an annular space in-between; and a plurality of vanes arranged circumferentially within said annular space, each vane attached to both disks defining the annular space, each vane has a leading edge, a trailing edge, a concave surface and a convex surface, with the average angles of inclination of the successive portions of the vane with respect to a plane comprising the midpoint of the vane and perpendicular to a radial plane including the rotational axis of the rotor and the midpoint of the vane decreases preferably gradually from its leading edge towards its trailing edge, within a range from about +18 to about −18 degrees, the opposing parts of the surfaces of each two adjacent vanes along with the opposing parts of the two disks' surfaces confined between the opposing parts of the surfaces of each two adjacent vanes defining a feeding channel between them, each feeding channel has an inlet communicating with the compressor's inlet passage and an outlet communicating with the compressor's receiver.    
   
   
       2 . The rotary ram-in compressor of  claim 1 , wherein the cross sectional area of the inlet of each of the said feeding channels equals the cross sectional area of its outlet  
   
   
       3 . The rotary ram-in compressor of  claim 1 , wherein each of the said feeding channels converges from its inlet towards its outlet  
   
   
       4 . The rotary ram-in compressor of  claim 1 , wherein the said conduit communicating the compressor's receiver with the container is provided with valve means for controlling the flow of gas through the conduit.  
   
   
       5 . The rotary ram-in compressor of  claim 1 , which further comprises at least one pressure sensor for detecting the degree of rise in the pressure of gas supplied by the rotary ram-in compressor.  
   
   
       6 . A rotary ram-in compressor, used for pressurizing a gas into a container, said rotary ram-in compressor comprising: 
 a stationary casing having at least one inlet passage for admission of the gas, and a receiver;    at least one conduit for communicating the said receiver with the said container;    a drive shaft supported for rotation in a given direction inside the casing by an arrangement of bearings, and extending to a drive receiving end located outside the casing; and    a rotor assembly housed inside the casing and functionally divided into at least two successive rotary ram-in compressor stages, each of the rotary ram-in compressor stages includes a first disk secured for rotation with the drive shaft and lying in a first plane transverse to the rotational axis of the drive shaft; a second disk lying in a second plane transverse to the rotational axis of the drive shaft, with the inner surfaces of the two disks defining an annular space in-between; and a plurality of vanes arranged circumferentially within said annular space, each vane attached to both disks defining the annular space, each vane has a leading edge, a trailing edge, a concave surface and a convex surface, with the average angles of inclination of the successive portions of the vane with respect to a plane comprising the midpoint of the vane and perpendicular to a radial plane including the rotational axis of the rotor and the midpoint of the vane decreases preferably gradually from its leading edge towards its trailing edge, within a range from about +18 to about −18 degrees, the opposing parts of the surfaces of each two adjacent vanes along with the opposing parts of the two disks' surfaces confined between the opposing parts of the surfaces of each two adjacent vanes defining a feeding channel between them, each feeding channel has an inlet and an outlet, with the inlets of the feeding channels of the first rotary ram-in compressor stage communicating with the said compressor's inlet passage, and with the outlets of the feeding channels of the last rotary ram-in compressor stage communicating with the said compressor's receiver.    
   
   
       7 . The rotary ram-in compressor of  claim 6 , wherein the cross sectional area of the inlet of each of the said feeding channels equals the cross sectional area of its outlet  
   
   
       8 . The rotary ram-in compressor of  claim 6 , wherein each of the said feeding channels converges from its inlet towards its outlet.  
   
   
       9 . The rotary ram-in compressor of  claim 6 , wherein the said conduit communicating the compressor's receiver with the container is provided with valve means for controlling the flow of gas through the conduit.  
   
   
       10 . The rotary ram-in compressor of  claim 6 , which further comprises at least one pressure sensor for detecting the degree of rise in the pressure of gas supplied by the rotary ram-in compressor.