Hermetic compressor

Abstract

Disclosed is a hermetic compressor capable of preventing an intake valve from making contact with a piston without reducing compressing efficiency of the compressor. The hermetic compressor includes a cylinder block having a compressing chamber, a piston performing a reciprocation, a cylinder block coupled at an side of the cylinder block so as to close the compressing chamber and an intake valve plate which is provided between the cylinder block and the cylinder head and has an intake valve which controls a flow of a refrigerant introduced into the compressing chamber, wherein a compressing surface of the piston facing the intake valve plate forms a flat surface parallel to the intake valve plate and an anti-contact portion which receives a part of the intake valve is formed on the compressing surface so as to prevent the piston from making contact with the intake valve during the reciprocation of the piston.

1 . A hermetic compressor comprising:
 a cylinder block having a compressing chamber;   a piston performing a reciprocation in the compressing chamber;   a cylinder head which is coupled to one side of the cylinder block so as to close the compressing chamber; and   an intake valve plate having an intake valve which is provided between the cylinder block and the cylinder head so as to control a flow of a refrigerant which is introduced into the compressing chamber,   wherein a compressing surface of the piston facing the intake valve plate forms a flat surface parallel to the intake valve plate, and an anti-contact portion which receives a part of the intake valve is formed on the compressing surface so as to prevent the piston from making contact with the intake valve during the reciprocation of the piston.   
   
   
       2 . The hermetic compressor as claimed in  claim 1 , wherein the anti-contact portion includes a recess having a shape corresponding to a shape of the intake valve. 
   
   
       3 . The hermetic compressor as claimed in  claim 2 , wherein the anti-contact portion has a width larger than a width of the intake valve so that the intake valve passes through the anti-contact portion. 
   
   
       4 . The hermetic compressor as claimed in  claim 2 , wherein the intake valve is formed by cutting the intake valve plate, in which one end of the intake valve serves as a fixing end and the other end of the intake valve serves as a free end. 
   
   
       5 . The hermetic compressor as claimed in  claim 4 , wherein a depth of the anti-contact portion gradually increases from the fixing end to the free end. 
   
   
       6 . The hermetic compressor as claimed in  claim 2 , wherein a volume of the anti-contact portion is set within a predetermined range which does not reduce a compressing efficiency of the hermetic compressor.