Sealing structure for compressor

Abstract

A sealing structure for a compressor includes a cylindrical housing in which a compression unit is accommodated (one end of the housing is opened so as to form an opening), a header fixed to the housing to close the opening of the housing, a ring-shaped gland formed on an end face of the one end of the housing, an O-ring installed in the gland to seal between the housing and the header, and a fastening mechanism for fixing the header to the housing. The end face of the housing is separated, by the gland, into an outer face on an outer circumferential side and an inner face on an inner circumferential side. A step is formed between the outer face and the inner face. According to the above structure, sealing characteristics between the housing and the header can be improved.

What is claimed is: 
     
         1 . A sealing structure for a compressor, the structure comprising:
 a cylindrical housing in which a compression unit is accommodated, one end of the housing being opened so as to form an opening;   a header fixed to the housing to close the opening of the housing;   a ring-shaped gland formed on an end face any one of the housing and the header;   an O-ring installed in the gland to seal between the housing and the header; and   a fastening mechanism for fixing the header to the housing, wherein   the end face is separated, by the gland, into an outer face on an outer circumferential side and an inner face on an inner circumferential side, and   a step is formed between the outer face and the inner face.   
     
     
         2 . The sealing structure according to  claim 1 , wherein
 one of the outer face and the inner face on a side of which the fastening mechanism is provided is protruded from a plane of another of the outer face and the inner face so as to form the step.   
     
     
         3 . The sealing structure according to  claim 2 , wherein
 the fastening mechanism is provided on a side of the outer face.   
     
     
         4 . The sealing structure according to  claim 1 , wherein
 a suction port for suctioning refrigerant into an inside of the housing or a discharge port for discharging refrigerant from an inside of the housing is provided nearby the opening, and   the O-ring includes an expanded portion for surrounding the suction port or the discharge port.   
     
     
         5 . The sealing structure according to  claim 2 , wherein
 a suction port for suctioning refrigerant into an inside of the housing or a discharge port for discharging refrigerant from an inside of the housing is provided nearby the opening, and   the O-ring includes an expanded portion for surrounding the suction port or the discharge port.   
     
     
         6 . The sealing structure according to  claim 3 , wherein
 a suction port for suctioning refrigerant into an inside of the housing or a discharge port for discharging refrigerant from an inside of the housing is provided nearby the opening, and   the O-ring includes an expanded portion for surrounding the suction port or the discharge port.