Intake Valve Actuating System, Compressors Starting Method and Its Uses

Abstract

The present invention relates an intake valve actuating system, specially to reciprocating machines, the use of said system in compressors and a compressors starting method, promoting advantages on the compressors starting, minimizing the power needed on said reciprocating machines. Specially, the present invention includes a controlled actuating mean actuating an intake valve, by a coil, while a piston starts its reciprocating movement. The intake valve can be displaced, at the expense of the reciprocating movement of the piston, displacing a relief spring, avoiding overloading the coil. The present invention is situated on field of Mechanical Engineer, more precisely on the area of Flow Machines.

1 . Intake valve actuating system, comprising:
 a. controlled actuating mean;   b. actuating stem associated to the controlled actuating mean,   
       the system characterized by:
 the controlled actuating means project the actuating stem in an opening direction sufficient to promote the opening of the intake valve; 
 the actuating stem, the controlled actuating means, or both comprises displacement absorption means in a relief direction opposite to the projection imposed by the controlled actuating means and comprise actuating stem return in position sufficient to promote the intake valve reopening. 
 
     
     
         2 . Intake valve actuating system according to  claim 1 , characterized by the fact that the controlled actuating means happens applying a controlled electrical current. 
     
     
         3 . Intake valve actuating system according to  claim 1 , characterized by the displacement absorption mean is comprised by at least one of the comprised on the group defined by: elastic mechanical element; electrical current intensity controller; spring-gas; fluid compression; balance by controlled mass; or similar. 
     
     
         4 . Intake valve actuating system according to  claim 1 , characterized by:
 a. the actuating mean being a solenoid having a magnetizable movable plunger housing an actuating stem, the solenoid being capable of displace the movable plunger in an opening direction;   b. the displacement absorption mean being a spring associated to the movable plunger and to the actuating stem, capable of allowing, by means of an elastic deformation, the actuating stem displacement in a direction contrary to the movable plunger displacement, when magnetized.   
     
     
         5 . Method for starting compressors, in which the compressor uses a reciprocating piston for compressing a fluid and comprises an intake valve actuating system as defined in  claim 1 , the method being characterized by comprising the steps of controlled actuating mean actuation for the opening of an intake valve according to the displacement movement of a piston on the compression direction. 
     
     
         6 . Method for starting compressors, according to  claim 5 , characterized by actuating the controlled actuation mean during the compressor starting. 
     
     
         7 . Method for starting compressors, according to  claim 5 , characterized by comprising the steps of:
 a. activates a controlled actuating mean for opening an intake valve;   b. start displacement movement of a piston to the compression direction;   c. absorb the piston displacement movement, when in contact with the intake valve,   the controlled actuating mean being held actuated during all steps (a) to (b).   
     
     
         8 . Method for starting compressors, according to  claim 5 , characterized by the fact that controlled actuating mean is disabled when the compressor reaches pre-defined operation conditions for maintenance of an operation regimen. 
     
     
         9 . Use of the intake valve actuating system, characterized by the system being as defined in  claim 1  and for being used in a compressor. 
     
     
         10 . Use of the intake valve actuating system according to  claim 9 , characterized by the compressor being of hermetic type for feeding cooling cycles.