PISTON COMPRESSOR Russian patent published in 2007 - IPC F04B39/06 

FIELD: mechanical engineering; compressors.

SUBSTANCE: invention relates to cooled piston compressors operating without lubrication of working space and designed for compressing and transporting of gases. Proposed piston compressor contains cylinder with suction and delivery valves. Cylinder cover and piston are installed in cylinder for reciprocating. Cylinder housing is provided with inner and outer ribs formed by group of plates N, each group consists of plates N₁,N₂,N₃,N₄ and number of plates in each group can be different. Moreover, plates N₁ are made with inner diameter d₁=d_c and outer diameter D₁=D_r, plates N₂ are made with inner diameter d₂=d_c+2hr and outer diameter D₂=Dr-2Hr, plates N₃ are made with inner diameter d₃=d_c and outer diameter D₃=Dr-2Hr, and plates N₄ are made with inner diameter d4=dc+2hr and outer diameter D₄=Dr where N₁,N₂,N₃,N₄ is one of plate groups, d₁ is inner diameter of plate N₁, d₂ is inner diameter of plate N₂, d₃ is inner diameter of plate N₃, d₄ is inner diameter of plate N₄, d_c is inner diameter of cylinder, h_r is height of inner ribs of cylinder, Hr is height of outer ribs of cylinder, D₁ is outer diameter of plate N₁, D₂ is outer diameter of plate N₂, D₄ is outer diameter of plate N₄, Dr is outer diameter of cylinder over height of outer ribs Hr. Lower part of cylinder at distance L can be made without ribs so that d₁=d₂=d₃=d₄=d_c. Coefficient of internal ribbing is increased at small height of ribs owing to reduction of rib-to-rib space, making it possible to increase degree of cooling of compressed gas without considerable increase of dead clearance volume.

EFFECT: improved cooling.

2 cl, 2 dwg